’88’ Makes Sizewell Debut
The title of this post, is the same as that of a news snippet in the June 2020 Edition of Modern Railways.
There is a picture of the electro-diesel Class 88 locomotive moving a nuclear flask from Sizewell on the closed Aldeburgh branch line to Crewe.
Note that is about 27-28 miles from the electrification at Ipswich East Suffolk Junction and the siding close to the power station, where flasks are loaded.
This is a classic use of an electric locomotive, that has a Last Mile-capability using an on-board diesel engine.
Many ports in the UK, like these examples are a few miles from the electrified network.
- Felixstowe – 16 miles
- Liverpool – 5 miles
- London Gateway – 4 miles
- Southampton – 2 miles
How many trains could be hauled to and from these and other ports using a Class 88 locomotive or their similar, but more powerful sibling; the Class 93 locomotive?
Conclusion
I suspect there are a number of routes that could be handled by electro-diesel locomotives.
I would like to see a serious analysis of all duties performed by diesel locomotives, like for example; Classes 66, 67, 68 and 70 locomotives, to see how many could be performed by suitably-sized electro-diesel locomotives.
If there is a gap in the market, then a rolling stock leasing company, should fill it!
Just like Beacon Rail Leasing and Clayton Equipment appear to have done with a diesel shunter, which I wrote about in UK Diesel-Battery Hybrid Locomotive Lease Fleet Ordered.
As Beacon Rail Leasing seem to be heavily involved in the leasing of electro-diesel locomotives, perhaps, they’re working on it?
GWR and DfT’s Commitment To The Night Riviera
The May 2020 Edition of Modern Railways has an article, which is entitled West Of England Improvements In GWR Deal.
Under a heading of Sleeper Planning, this is said about plans for the Night Riviera.
Whilst GWR is already developing plans for the short term future of the ‘Night Riviera’ sleeper service, including the provision of additional capacity at times of high demand using Mk. 3 vehicles withdrawn from the Caledonian Sleeper fleet, it is understood the company has been asked to develop a long-term plan for the replacement of the current Mk. 3 fleet of coaches, constructed between 1981 and 1984, as well as the Class 57/6 locomotives, which were rebuilt in 2002-03 from Class 47 locomotives constructed in the early 1960s.
This must show commitment from both GWR and the Department for Transport, that the Night Riviera has a future.
These are a few of my thoughts on the future of the service.
The Coaches
I would suspect that GWR will opt for the same Mark 5 coaches, built by CAF, as are used on the Caledonian Sleeper.
I took these pictures on a trip from Euston to Glasgow.
The coaches don’t seem to have any problems and appear to be performing well.
The facilities are comprehensive and include full en-suite plumbing, a selection of beds including doubles and a lounge car. There are also berths for disabled passengers.
The Locomotives
The Class 57 locomotives have a power output around 2 MW and I would suspect a similar-sized locomotive would be used.
Possible locomotives could include.
- Class 67 – Used by Chiltern on passenger services – 2.4 kW
- Class 68 – Used by Chiltern, TransPennine Express and others on passenger services – 2.8 MW
- Class 88 – A dual-mode locomotive might be powerful enough on diesel – 700 kW
I wouldn’t be surprised to see Stadler come up with a customised version of their Euro Dual dual-mode locomotives.
My First Ride In A Nova 3 Train
Nova 3 is the name that TransPennine Express have given to their new fleet of Mark 5A coaches hauled by Class 68 locomotives.
The first few pictures were taken, when I saw a Nova 3 at Manchester Victoria station and the ither during and after a ride between Manchester Victoria and Leeds stations.
These are a few of my thoughts.
Comfort, Noise And Vibration
It was certainly good and up there with the best.
Tables For Four
There were quite a few tables, but not everyone got one.
Ride And Performance
There was nothing wrong with the ride, but we were only doing 75 mph across the Pennines.
Next time, I’m in the North, I’ll take one of these trains up the East Coast Main Line to Scarborough or Redcar to feel them at a faster speed.
Conclusion
I wouldn’t object to having these coaches with a Class 88 electric locomotive running between London and Nowich via Ipswich.
A Chaotic Morning Peak Across The Pennines
I had intended to ride in one of TransPennine Express’s new trains that are formed of a rake of Mark 5A coaches hauled by a Class 68 locomotive.
As they run between Liverpool Lime Street and Scarbough, I thought it best to buy a return ticket between Manchester Victoria and Leeds.
Problem Number 1 – Northern’s Ticket Machine
Northern’s new ticket machines are fine when they work, but for some reason they wouldn’t respond to my fingers.
I find this with some touch screens, which are mainly in Sweden or IKEA in the UK.
So I bought a ticket from the ticket office intending to catch the next Scarborough train.
This had also happened the day before at Leeds.
Problem Number 2 – The Scarborough Train Didn’t Arrive
As the Scarborough train didn’t arrive, I gave up and took the Newcastle train towards Leeds.
Problem Number 3 – Overcrowding At Huddersfield
I took this picture of the crowds at Huddersfield.
My phone was telling me that the Scarborough train was behind my Newcastle train, so I decided to change at Huddersfield.
But I made a mistake and got on a very crowded train, that was going to Hull via Leeds.
I had to stand to Leeds, but at least I got a roomy and safe standing space.
Problem Number 4 – Class 185 Trains
.The Class 185 trains are just three-cars and totally inadequate for the route.
The trains were ordered in 2003 and were delivered in 2006-2007.
If you read the section entitled Overcrowding And Passenger Feedback, in the Wikipedia entry for the trains., you’ll see from the early days, these trains did not have enough capacity for the route.
I blame the Treasury under Gordon Brown, who specified the trains and as with Class 700 trains, which were also specified by the Treasury, there are serious shortcomings.
Considering that among other routes at this time, the London and Norwich route was being run by eight car trains, what in heaven were they thinking about.
But it was only the North of England! And not London or Scotland!
Problem Number 5 – Crowded Leeds Station
Leeds station was crowded as ever, but it wasn’t helped by an escalator being broken down.
I had hoped, that I would have enough time to go to Harrogate, but I felt as it was all so slow, that it was best to go back to Manchester Victoria station, grab something to eat and then go on to Liverpool Lime Street station, which was my intended destination.
Problem Number 6 – Ticket Machine At Leeds Station
I needed a Single from Leeds to Liverpool Lime Street and try as I might, I couldn’t find it on the machine, so I resorted to the Ticket Office again.
Problem Number 7 – Train Failure At Manchester Victoria Station
The train from Leeds to Manchester Victoria was another Class 185 train and I did get a seat.
But where was the new five-car rake of Mark 5A coaches and a Class 68 locomotive?
I did successfully split my journey at Manchester Victoria station, but there seemed to be problems, so I thought I’d go on immediately to Liverpool and arrive in the city with an hour to spare for my meeting.
As if things could be so simple!
A Class 185 train had failed in the platform and it was nearly an hour, before I got away to Liverpool in a train, that arrived in the bay platform 2, which to get to the West, had to come out of the station and reverse. I suspect TransPennine Express were using a driver in both cabs or driving it from the Liverpool-facing cab at all time.
Problem Number 8 – Late Arrival Into Liverpool Lime Street
I arrived in Liverpool about fifteen minutes late for my meeting, with the rain chucking it down, after it being dry in Manchester.
The weather in itself must be unusual!
My Observations
I was having a text conversation with a friend in London and these were my observations to him, with a few other points added by hindsight.
1. Northern’s Ticket Machines
These need reeducation and the dry-finger problem that I suffer with the screens must be fixed.
2. Northern’s Ticket Offices
Northern needs to open more ticket office windows.
3. Where Is The London-Style Contactless Ticketing?
London has proven, that contactless ticketing based on bank cards increases passenger numbers and revenue and has a high level of passenger satisfaction.
\The area of the North between Liverpool and Blackpool in the West and Leeds and Sheffield in the East is in terms of passenger numbers smaller than London’s contactless ticketing area.
I think there are two reasons, why it doesn’t exist now or in the near future.
- The trains are not big enough to cope with the increased traffic.
- It will result in a reduction of ticket offices and their staff and those in charge are frightened of the RMT.
So visitors like me have to suffer an inadequate ticketing system because of timid management.
4. Buying Tickets In The North In The Future
In future, when I go to the North, I’ll plan my journey in detail and buy my tickets from the intelligent and extremely customer-friendly ticket machines in Dalston Junction station.
It’s strange that both Northern and the London Overground are run by Arriva. How can one get it so right and the other so wrong?
Perhaps it’s because the London Overground only deals with one organisation; Transport for London and Northern deals with a myriad rabble of councillors, MPs, pressure groups, all fighting their own corners.
5. All Trains Must Be At Least Six Cars
More capacity is needed and as there is a lack of train paths across the Pennines, because of lack of investment in the tracks for decades, starting with that enemy of the train; Harold Wilson.The simplest way to increase to increase capacity is to make all trains at least six cars.
But I would go father than that.
- Trains running across the Pennines should all be identical.
- Capable of at least 100 mph.
- Capable of 125 mph, when the route includes the West or East Coast Main Lines.
- Fast acceleration away from stops.
- Identical door configuration with wide double doors on all trains.
- Level access between train and platform.
- Short dwell times in stopping stations.
Identical trains improve timekeeping and give a better service to passengers.
If you look at the Paddington and Oxford service it is now run virtually exclusively using Class 800 or 802 trains. I feel as an occasional passenger that it has improved dramatically, in terms of capacity, comfort and reliability for passengers.
6. What Idiot Decided To Buy Three Different Fleets For TransPennine Express?
The sister company of TransPennine Express is Great Western Railway.
Great Western Railway’s main line services are run by two fleets of trains.
- Hitachi Class 800 and Class 802 trains for long distance services.
- Class 387 trains for electric commuter services.
As some of the Class 387 trains are being converted for Heathrow Express and Crossrail are taking over London and Reading services, I can see a time, when all fast services that go to and from Paddington through Reading will be run by the Hitachi trains.
Consider.
- West of Heathrow, the fast lines are reserved for the 125 mph Hitachi trains.
- The 110 mph Class 387 trains to and from Heathrow, don’t get in the way of the faster Hitachi trains.
- Applying digital signalling to increase paths on the fast lines is easier with identical trains.
- Driver training and rostering must be simpler.
It’s not perfect, but it’s an arrangement that can be made to work well.
If a unified fleet is so good, why did TransPennine Express buy three separate fleets?
Class 802 Trains
Nineteen Class 802 trains will be used for these services.
- Liverpool Lime Street to Edinburgh Waverley via Newcastle (from December 2019)
- Liverpool Lime Street to Newcastle (until December 2019)
- Manchester Airport to Newcastle
This seems to be a sensible and obvious choice.
- A five-car Class 802 train has eighty percent more seats than a three-car Class 185 train.
- A five-car Class 802 train is shorter than a pair of Class 185 trains.
- The trains are 125 mph trains, that can be upgraded to 140 mph with digital in-cab signalling.
- FirstGroup must have a large amount of experience of running Class 802 trains.
- Class 802 trains have an automatic split and join facility.
- East Coast Trains, Hull Trains and LNER will be running similar Hitachi trains on the East Coast Main Line.
In addition the fleet is future-proofed in two important ways.
- If the TransPennine route is ever electrified, their diesel engines can be removed.
- Extra cars can be added to Class 802 trains to increase capacity
Using Class 802 trains is an excellent choice.
Class 68 Locomotive And Mark 5A Coaches
Twelve rakes of four Mark 5A coaches between a Class 68 locomotive and a driving van trailer, will run these routes.
- Liverpool Lime Street to Scarborough via Manchester Victoria.
- Manchester Airport to Redcar Central (In 2019).
I wonder why these services aren’t going to be run by another twelve Class 802 trains.
Consider.
- Pollution would be reduced and the air improved in the electrified Liverpool Lime Street, Manchester Airport and Manchester Airport stations, if TransPennine used Class 802 trains on all services from the station.
- Drivers on the routes across the Pennines would more often be driving the same trains.
- The Class 802 trains are in service on the East Coast Main Line, which must make timekeeping better.
- The Class 802 trains can be upgraded to work at 140 mph on the East Coast Main Line.
It’s rather strange!
Class 397 Trains
Twelve Class 397 trains will be replacing ten Class 350 trains.
- The extra two trains are to provide a Liverpool and Glasgow service.
- The Class 397 trains have an extra car over the Class 350 trains.
- The seating capacity of both trains is 296.
- The Class 397 trains are 125 mph trains, which can mix it with Virgin’s Pendelinos.
- The Class 350 trains are only 110 mph trains, which must get in the way of the Pendelionos.
- I suspect that the Class 397 trains can be upgraded to 140 mph in the future.
The Class 350 trains needed to be increased and replaced with a 125 mph train.
But why aren’t they being replaced with more Class 802 trains?
- The Class 802 train is already in service.
- The Class 802 train has 326 seats as against the 296 of the Class 397 train.
- TransPennineExpress are already buying nineteen Class 802 trains.
- If required, an all-electric version could be ordered.
- West Coast Rail plan to run Hitachi trains on the West Coast Main Line.
It’s rather a puzzle, why TransPennine Express has ordered Class 397 trains, as everything suggests that Class 802 trains could run West Coast services.
All Three Fleets Use The Castlefield Corridor
Believe it or not, but TransPennine Express plan to run these services through the Castlefield Corridor.
- Manchester Airport and Glasgow/Edinburgh – Class 397 trains.
- Manchester Airport and Newcastle – Class 802 trains
- Manchester Airport to Redcar Central – Mark 5A coaches.
Three routes and three different trains!
Was this timetable chosen to confuse staff and passengers?
Possible Reasons For Three Fleets
The only valid reason is that the Hitachi trains can’t work in Scotland.
But it is more likely to do with production schedules at Hitachi or that the fleets were bought by accountants, with very little brain!
I did notice this statement in the Wikipedia entry for the Class 397 trains.
An option for up to 22 extra units was available to TransPennine Express, but it was not exercised.
As 22 trains is close to the nineteen Class 802 trains that were ordered, were TransPennine Express trying to buy a totally-CAF fleet?
7. Track Speed Should Be Improved
Track speeds are slow compared to say the the Great Eastern Main Line,
Improving the track to allow faster speeds may be one of the best decisions to take.
8. There Should Be Better Platform Access At Manchester Victoria And Leeds Stations
These two stations don’t have the best access to the platforms..
They should be improved with more escalators, so that passengers changing trains don’t miss their connections.
Conclusion
Money needs to be spent to remove some of the chaos and constipation in the North.
I
Puzzled By New Fleets For TransPennine Express
TransPennine Express (TPE) are replacing all their trains, but their choice of three different new fleets puzzles me.
The new fleets and their routes are as follows.
Nova1
This is a fleet of nineteen five-car bi-mode Class 802 trains.
According to Wikipedia, they will work the following routes, with probably a frequency of one tph
Liverpool Lime Street and Edinburgh via Newcastle, which I estimate will take 4:15 hours
Manchester Airport and Newcastle, which takes around 2:45 hours
These two services would probably need nine for the Edinburgh service and six for the Manchester Airport service.
This means that there are four extra trains.
If there is a spare or one in maintenance, that means that two trains are available to boost capacity on busy services if needed, by running a ten-car train.
I doubt that ten-car services to Manchester Airport could be run through the Castlefield Corridor due to the inadequate stations, but Liverpool and Edinburgh might be a route for longer trains.
I have some observations on Nova1.
- The trains are 125 mph trains, that can be upgraded to 140 mph with in-cab signalling.
- The trains will share the East Coast Main Line with LNER’s Azumas, which are other members of te same family of Hitachi trains.
The trains have been authorised to start running services.
Nova2
This is a fleet of twelve electric Class 397 trains.
According to Wikipedia, they will work the following routes,
- Manchester Airport and Glasgow Central, which takes around 3:30 hours.
- Manchester Airport and Edinburgh, which takes around 3:15 hours.
- New route – Liverpool Lime Street and Glasgow Central, which could take around 3:30 hours.
Currently, the two existing routes run at a frequency of one train per two hours, which would probably need at least seven trains.
This probably means that there will be four trains left for the service between Liverpool and Glasgow, if it assumed there is one train spare or in maintenance.
As a round trip between the two cities, would probably take eight hours, it looks like the frequency will be one train per two hours.
This would give the following services, all with a frequency of one train per two hours.
- Manchester Airport and Glasgow Central via Manchester Piccadilly
- Manchester Airport and Edinburgh via Manchester Piccadilly
- Liverpool Lime Street and Glasgow Central
Passengers wanting to go between Liverpool Lime Street and Edinburgh should keep reading.
I have some observations on Nova2.
- They are 125 mph trains that are replacing the 110 mph Class 350 trains.
- In the next few years, these 125 mph trains will be sharing the West Coast Main Line with faster trains like Class 390 trains and the trains of High Speed Two, both of which should be capable of 140 mph, when running using in-cab signalling.
- I would assume that the trains can be similarly upgraded, otherwise they will have to be replaced.
- There was an option for more trains, but I suspect the success of Class 802 trains on the Great Western Railway led to it not being taken up.,
The trains should come into service later this year.
Nova3
This is a fleet of five-car rakes of Mark 5A coaches, hauled by a Class 68 diesel locomotive.
There are fourteen locomotives and driving van trailers, with enough coaches for thirteen rakes.
I would suspect that TPE are aiming to have twelve trains available for service.
According to Wikipedia, they will work the following routes, which both have a frequency of one train per hour (tph)
- Liverpool Lime Street and Scarborough via Manchester Victoria, which takes around 2:45 hours.
- Manchester Airport and Middlesbrough, which takes around 2:45 hours.
So with turnround at both ends, I suspect that a six hour round trip is possible. So to provide the two hourly services across the Pennines, TPE will need six trains for each route.
This explains a fleet size of twelve operational trains.
I have two observations on Nova3.
- They are diesel-powered and will be running at times on electrified lines. But I suspect the diesel Class 68 locomotive could be replaced in the future with an electro-diesel Class 88 locomotive.
- Questions have been raised about the speed of exit and entry from the coaches through single end doors of the coaches.
- They have an operating speed of only 100 mph, but opportunities for higher speeds on the routes are limited to perhaps thirty to forty miles on the East Coast Main Line.
At least they should be in service within a couple of months.
Why Didn’t TPE Order A Unified Fleet?
To summarise TPE have ordered the following trains.
- Nova1 – Nineteen Class 802 trains
- Nova2 – Twelve Class 397 trains.
- Nova3 – Thirteen trains consisting of four coaches topped and tailed by a a Class 68 locomotive and driving van trailer.
All forty-four trains are five cars.
Surely, it would have been easier for TPE to have a fleet, where all the trains were the same.
I suspect that all routes can be run using Class 802 trains, so it as not as if there are any special requirements for the trains.
So why didn’t TPE order a fleet of Class 802 trains?
I can only think of these reasons.
- Hitachi couldn’t supply the required number of trains in the appropriate time-scale.
- ,CAF made an offer that TPE couldn’t refuse.
It should also be born in mind that Great Western Railway and Hull Trains, which like TPE are First Group companies, went down the Class 802 route.
The Future
There are various issues, that will arise in the future.
Nova2 And West Coast Main Line Operating Speed
The new Nova trains are running on TPE’s Northern and Scottish routes and as I indicated earlier, the Nova2 trains might not be fast enough in a few years time for the West Coast Main Line, which will have Class 390 trains running at 140 mph using in-cab signalling.
High Speed Two will surely make this incompatibility worse, unless CAF can upgrade the Nova2 trains for 140 mph running.
Replacing the Nova2 trains with Class 802 trains, which are being built for 140 mph running, would solve the problem.
Nova3 And Class 68 Locomotives
There are powerful reasons to replace diesel locomotives on the UK’s railways, with noise, pollution and carbon emissions at the top of the list.
As Northern Powerhouse Rail is created, there will be more electrification between Manchester and York, adding to the pressure to change the traction.
- There could be a change of locomotives to Class 88 or Class 93 locomotives, which would run using the overhead electrification, where it exists.
- The trains could be changed to Class 802 trains.
The Class 68 locomotive is increasingly looking like an interim solution. At least, it’s a less polluting locomotive, than the dreaded and ubiquitous Class 66 locomotive.
Class 185 Replacement
TPE will still have a fleet of diesel three-car Class 185 trains.
- They are running on routes between Manchester and Hull and Cleethorpes via Huddersfield, Leeds and Sheffield.
- These are best described as just-about-adequate trains and are one of The Treasury’s boob-buys.
- As Northern Powerhouse Rail is created, they will be increasingly running under wires.
- Could it be likely that more capacity will be needed on routes run by these trains?
- The capacity of a Class 185 train is 169 seats, as opposed to the 342 seats of a five-car Class 802 train.
I think it could be very likely that instead of running pairs of Class 185 trains, TPE will replace them with five-car Class 802 trains.
Conclusion
I very much feel, that over the next few years, TPE’s fleet will change further in the direction of a one-unified fleet!
Could A Modular Family Of Freight Locomotives Be Created?
In Thoughts On A Battery/Electric Replacement For A Class 66 Locomotive, I looked at the possibility of creating a battery/electric locomotive with the performance of a Class 66 locomotive.
- I felt that the locomotive would need to be able to provide 2,500 kW for two hours on battery, to bridge the gaps in the UK electrification.
- This would need a 5,000 kWh battery which would weigh about fifty tonnes.
- It would be able to use both 25 KVAC overhead and 750 VDC third-rail electrification.
- It would have a power of 4,000 kW, when working on electrification.
- Ideally, the locomotive would have a 110 mph operating speed.
It would be a tough ask to design a battery/electric locomotive with this specification.
The Stadler Class 88 Locomotive
Suppose I start with a Stadler Class 88 locomotive.
- It is a Bo-Bo locomotive with a weight of 86.1 tonnes and an axle loading of 21.5 tonnes.
- It has a rating on electricity of 4,000 kW.
- It is a genuine 100 mph locomotive when working from 25 KVAC overhead electrification.
- The locomotive has regenerative braking, when working using electrification.
- It would appear the weight of the diesel engine is around seven tonnes
- The closely-related Class 68 locomotive has a 5,600 litre fuel tank and full of diesel would weight nearly five tonnes.
In Thoughts On A Battery Electric Class 88 Locomotive On TransPennine Routes, I said this about replacing the diesel-engine with a battery.
Supposing the seven tonne diesel engine of the Class 88 locomotive were to be replaced by a battery of a similar total weight.
Traction batteries seem to have an energy/weight ratio of about 0.1kWh/Kg, which is increasing with time, as battery technology improves.
A crude estimate based on this energy/weight ratio would mean that at least a 700 kWh battery could be fitted into a Class 88 train and not make the locomotive any heavier. Given that lots of equipment like the alternator and the fuel tank would not be needed, I suspect that a 1,000 kWh battery could be fitted into a Class 88 locomotive, provided it just wasn’t too big.
This would be a 4,000 kWh electric locomotive with perhaps a twenty minute running time at a Class 66 rating on battery power.
The Stadler Class 68 Locomotive
The Stadler Class 68 locomotive shares a lot of components with the Class 88 locomotive.
- It is a Bo-Bo locomotive with a weight of 85 tonnes and an axle loading of 21.2 tonnes.
- It has a rating on diesel of 2,800 kW.
- It is a genuine 100 mph locomotive.
- The locomotive has regenerative braking to a rheostat.
- It has a 5,600 litre fuel tank and full of diesel would weight nearly five tonnes.
They are a locomotive with a growing reputation.
A Double Bo-Bo Locomotive
My devious engineering mind, thinks about what sort of locomotive would be created if a Class 68 and a Class-88-based battery/electric locomotive were integrated together.
- It would be a double Bo-Bo locomotive with an axle loading of 21.5 tonnes.
- It has a rating on electricity of 4,000 kW.
- It has a rating on diesel of 2,800 kW.
- Battery power can be used to boost the power on diesel as in the Stadler Class 93 locomotive.
- It would be nice to see regenerative braking to the batteries.
Effectively, it would be a diesel and a battery/electric locomotive working together.
This picture shows a Class 90 electric locomotive and a Class 66 diesel locomotive pulling a heavy freight train at Shenfield.
If this can be done with a diesel and an electric locomotive, surely a company like Stadler have the expertise to create a double locomotive, where one half is a diesel locomotive and the other is a battery/electric locomotive.
A Control Engineer’s Dream
I am a life-expired Control Engineer, but I can still see the possibilities of creating an sdvanced control system to use the optimal power strategy, that blends electric, battery and diesel power, depending on what is available.
I feel that at most times, the locomotive could have a power of up to 4,000 kW.
The Ultimate Family Of Locomotives
I have used a diesel Class 68 and a Class 88-based battery/electric locomotive,, to create this example locomotive.
In the ultimate family, each half would be able to work independently.
In time, other members of the family would be created.
A hydrogen-powered locomotive is surely a possibility.
The Control System on the master locomotive, would determine what locomotives were coupled together and allocate power accordingly.
Conclusion
I have used Stadler’s locomotives to create this example locomotive.
I suspect they are working on concepts to create more powerful environmentally-friendly locomotives.
As are probably, all the other locomotive manufacturers.
Someone will revolutionise haulage of heavy freight trains and we’ll all benefit.
Thoughts On A Battery Electric Class 88 Locomotive On TransPennine Routes
In Issue 864 of Rail Magazine, there is an article, which is entitled Johnson Targets A Bi-Mode Future.
As someone, who has examined the mathematics of battery-powered trains for several years, I wonder if the Age of the Hybrid Battery/Electric Locomotive is closer than we think.
A Battery/Electric Class 88 Locomotive
After reading Dual Mode Delight (RM Issue 863), it would appear that a Class 88 locomotive is a powerful and reliable locomotive.
- It is a Bo-Bo locomotive with a weight of 86.1 tonnes and an axle load of 21.5 tonnes.
- It has a rating on electricity of 4,000 kW.
- It is a genuine 100 mph locomotive when working from 25 KVAC overhead electrification.
- The locomotive has regenerative braking, when working using electrification.
- It would appear the weight of the diesel engine is around seven tonnes
- The closely-related Class 68 locomotive has a 5,600 litre fuel tank and full of diesel would weight nearly five tonnes.
It is worth looking at the kinetic energy of a Class 88 locomotive hauling five forty-three tonne CAF Mark 5A coaches containing a full load of 340 passengers, who each weigh 90 Kg with baggage, bikes and buggies. This gives a total weight would be 331.7 tonnes.
The kinetic energy of the train would be as follows for various speeds.
- 90 mph – 75 kWh
- 100 mph – 92 kWh
- 110 mph – 111 kWh
- 125 mph – 144 kWh
The increase in energy is because kinetic energy is proportional to the square of the speed.
Supposing the seven tonne diesel engine of the Class 88 locomotive were to be replaced by a battery of a similar total weight.
Traction batteries seem to have an energy/weight ratio of about 0.1kWh/Kg, which is increasing with time, as battery technology improves.
A crude estimate based on this energy/weight ratio would mean that at least a 700 kWh battery could be fitted into a Class 88 train and not make the locomotive any heavier. Given that lots of equipment like the alternator and the fuel tank would not be needed, I suspect that a 1,000 kWh battery could be fitted into a Class 88 locomotive, provided it just wasn’t too big.
A short length of electrification could be installed at terminal stations without electrification to charge the batteries during turnround.
This size of battery would be more than large enough to handle the braking energy of the train from full speed, so would improve the energy efficiency of the train on both electrified and non-electrified lines.
It would also contain more than enough energy to accelerate the train to line speeds that are typical of non-electrified routes.
TransPennine Express will soon run similar rakes of coaches hauled by Class 68 diesel locomotives between Liverpool and Manchester Airport and the North East.
The following sections of the Northern TransPennine route, are not electrified.
- Stalybridge and Leeds – 35 miles taking 46 minutes
- Leeds and Colton Junction – 20 miles taking 18 minutes
- Northallerton and Middlesbrough – 21 miles taking 29 minutes
- York and Scarborough – 42 miles taking 56 minutes
When running on these sections without electrification, consider the following.
- The train consists of modern coaches, which must be energy efficient.
- The train would enter the sections with a full battery, that had been charged using the 25 KVAC electrification on part of the route.
- Scarborough and possibly Middlesbrough stations, would have means to charge the battery.
- The train would enter the sections as close to line speed as possible, after accelerating using electrification.
- Regenerative braking would help conserve energy at any planned or unplanned stops.
- The driver will be assisted by a modern in-cab signaling and a very capable Driver Assistance System.
- Stadler and Direct Rail Services must have extensive theoretical and measured data of the performance of Class 88 locomotives and the related Class 68 locomotive, when they are hauling trains across the Pennines, which will enable extensive mathematical models to be built of the route.
For these reasons and especially the last about mathematical modelling, I believe that Stadler could create a battery/electric locomotive based on the Class 88 locomotive, that would be able to bridge the electrification gaps on battery power and haul a five-coach train on the Northern routes across the Pennines.
A Quick Look At The Mathematics
As I said earlier, the weight of a Class 88 locomotive and five Mark 5A coaches, full of passengers is 331.7 tonnes.
There would appear to be little weight difference between a diesel Class 68 locomotive and an electro-diesel Class 88 locomotive, so in this rough exercise, I will assume the train weight is the same.
The current Class 185 trains, that run across the Pennines have the following characteristics.
- Three-cars
- A weight of 168.5 tonnes.
- A passenger capacity of 169.
- Installed power of 560 kW in each coach, which means there is 1560 kW in total.
If each passengers weighs 90 Kg, with all their extras, a full train will weigh 183.7 tonnes.
So a full train has a power-weight ratio of nine kW/tonne, which must be sufficient to maintain the timetable across the Pennines.
The diesel Class 68 locomotive, which will be hauling trains on the route in the New Year, has an installed power of 2,800 kW, which gives a power/weight ratio of 8.4 kW/tonne.
I would be interested to know, if a Class 88 locomotive running in diesel mode with a power output of only 700 kW, could take one of the new trains across the Pennines. I suspect Stadler and/or DRS know the answer to this question.
But it would be a power/weight ratio of only 2.1 kW/tonne!
The challenging route is between Stalybridge and Leeds via Huddersfield, where the Pennines has to be crossed. I’m pretty certain, that all the other sections lack the gradients of the section between Stalybridge and Leeds.
So would a Class 88 locomotive with a 1,000 kWh battery be able to cross the Pennines with a full train?
Theoretically, up and down routes are good for battery/electric trains with regenerative braking, as energy used going uphill can be recovered on the other side.
The thirty-five miles between Stalybridge and Leeds take forty-six minutes, so for how long on this journey will the locomotive be applying full power? Perhaps for twenty minutes. If the locomotive applied an average of 2,000 kW for twenty minutes or a third of an hour, that would be 667 kWh.
With an electric multiple unit like an Aventra, where most if not all axles are driven and they can also contribute to regenerative braking, reasonably high rates of braking energy can be recycled.
But what proportion can be recycled, when the locomotive is doing all the regenerative braking. Any braking done by disc brakes on the coaches will result in lost energy.
As an aside, I wouldn’t be surprised to find out that train manufacturers simulate train braking in order to develop braking systems, that turn less energy into wasted heat.
I’d also love to see a simulation using Stadler’s real data of a Class 88 locomotive with batteries attempting to cross the Pennines, with a rake of Mark 5A coaches!
- What size of battery will be needed?
- Can this battery be fitted in the locomotive?
- Would distributing the batteries along the train increase performance?
- Would short lengths of electrification on the route, increase performance?
I was doing problems of similar complexity to attempt to design efficient chemical plants nearly fifty years ago. We had our successes, but not as great as we hoped. But we certainly eliminated several blind alleys.
My figures don’t show conclusively, that a Class 88 locomotive with a 1,000 kWh battery instead of a diesel engine and all the related gubbings, would be able to perform services across the Pennines.
But.
- Battery technology is improving at a fast pace.
- Train manufacturers are finding surprising ways to use batteries to improve performance.
- I don’t have access to Stadler’s real performance figures of their diesel locomotives.
- Finding a way to make it work, has a very high cost benefit.
Who knows what will happen?
125 Mph Running
The Class 88 locomotive, has a similar power output to the 125 mph Class 91 locomotive of the InterCity 225 and I believe that the locomotive might have enough power, when running on 25 KVAC overhead wires to be able to haul the train at 125 mph on the East Coast Main Line.
Conclusion
I believe that it is possible to create a battery/electric version of the Class 88 locomotive, that should be able to take a rake of five Mark 5A coaches across the Pennines.
Timings across the Pennines would benefit substantially, without any new infrastructure, other than that already planned and the charging system at Scarborough.
Five Mark 4 Coaches, A Driving Van Trailer And A Stadler UKLight Locomotive
In writing Would Electrically-Driven Trains Benefit From Batteries To Handle Regenerative Braking?, I started to analyse the mathetics and possibilities of a train with the following formation.
- Five Mark 4 Coaches, from an InterCity 225.
- A Driving Van Trailer (DVT)
- A variant of a Stadler UKlight locomotive, like a Class 68 or Class 88 locomotive.
The sub-section got too large and important so I decided to write it as a separate post.
I like the Class 68 locomotive, as it looks professional and seems to do all asked of it.
So what would be the kinetic energy of a formation of five Mark 4 coaches, between a DVT and a Class 68 Locomotive?
- The five Mark 4 coaches would weigh 209 tonnes.
- The Class 68 locomotive weighs 85 tonnes.
- The DVT weighs 42.7 tonnes
- I will assume that a five cars will seat around 300 passengers.
- The passengers weigh 27 tonnes, if you assume each weighs 90 Kg, with baggage, bikes and buggies.
- The train weight is 363.7 tonnes.
At 100 mph, which is the maximum speed of the Class 68 locomotive, the Omni Kinetic Energy Calculator gives the kinetic energy of the train as 100 kWh.
I doubt there’s the space to squeeze a 100 kWh of battery into a Class 68 locomotive to handle the regenerative braking of the locomotive, but I do believe that a locomotive can be built with the following specification.
- Enough diesel power to pull perhaps five or six Mark 4 coaches and a DVT at 125 mph.
- Ability to use both 25 KVAC and 750 VDC electrification.
- Battery to handle regenerative braking.
- As the Class 88 electro-diesel locomotive, which is around the same weight as a Class 68 locomotive, I suspect the proposed locomotive would be a bit heavier at perhaps 95 tonnes.
This train would have a kinetic energy of 160 kWh at 125 mph.
Consider.
- If the locomotive could have a 200 kWh battery, it could harvest all the regenerative braking energy.
- Accelerating the train to cruising speed uses most energy.
- Running at a constant high speed, would conserve the kinetic energy in the train.
- Stadler, who manufacture the Class 68 and 88 locomotives are going to supply a diesel/electric/battery version of the Class 755 train, for the South Wales Metro. In What Is The Battery Size On A Tri-Mode Stadler Flirt?, I estimated the battery size is about 120 kWh.
- The Class 68 and 88 locomotives are members of Stadler’s Eurolight family, which are designed for a 125 mph capability with passenger trains.
- I don’t believe the UK is the only country looking for an efficient locomotive to haul short rakes of coaches at 125 mph, on partially-electrified lines.
It should also be noted, that to pull heavy freight trains, the Class 88 locomotive has a 700 kW Caterpillar C27 diesel that weighs over six tonnes, whereas 200 kWh of battery, would weigh about two tonnes. I believe that a smaller diesel engine might allow space for a large enough battery and still be able to sustain the 125 mph cruise.
Stadler have the technology and I wonder, if they can produce a locomotive to fill the market niche!
In HS2 To Kick Off Sheffield Wiring, I reported on the news that the Northern section of the Midland Main Line between Clay Cross and Sheffield will be electrified.
This would greatly improve the performance of diesel/electric/battery hybrid trains between London and Sheffield.
- Between London and Kettering, the trains would be electrically-powered.
- Between Kettering and Clay Cross, they would use a mixture of diesel and battery operation.
- Between Clay Cross and Sheffield, the trains would be electrically-powered.
Note.
- Going North, trains would pass Kettering with a full battery.
- Going South, trains would pass Clay Cross with a full battery.
- Regenerative braking at stops between Kettering and Clay Cross would help recharge the batteries.
- The diesel engine would be sized to keep the train cruising at 125 mph on the gentle Midland Main Line and back up the acceleration needed after stops.
It would be a faster and very electrically-efficient journey, with a large reduction in the use of diesel power.
The locomotive would also have other uses in the UK.
- TransPennine services, where they could surely replace the Class 68 locomotives, that will haul Mark 5A coaches between Liverpool and Scarborough and Manchester Airport and Middlesborough.
- Between London and Holyhead
- Waterloo to Exeter via Basingstoke and Salisbury.
- Marylebone to Birmingham via the Chiltern Main Line, if the two ends were to be electrified.
- Services on the East West Rail Link.
- Between Norwich and Liverpool
- CrossCountry services.
Note.
- Services could use a rake of Mark 4 coaches and a DVT or a rake of new Mark 5A coaches.
- If more electrification is installed, the trains would not need to be changed, but would just become more efficient.
- The competition would be Bombardier’s proposed 125 mph bi-mode Aventra with batteries, that I wrote about in Bombardier Bi-Mode Aventra To Feature Battery Power.
And that is just the UK!
Conclusion
Using the Mark 4 coaches or new Mark 5A coaches with a new 125 mph diesel/electric/battery hybrid Stadler UKLight locomotive could create an efficient tri-mode train for the UK rail network.
The concept would have lots of worldwide applications in countries that like the UK, are only partially electrified.
TPE Earmarks Top-And-Tail ’68s’ For Passenger Services
The title of this post is the same as that of an article in Issue 851 of Rail Magazine.
The article describes how TransPennine Express are going to use four Class 68 locomotives and four-carriage rakes of Mark 3 coaches to provide passenger services between Liverpool Lime Street and Scarborough.
From the 20th of May, services will leave Liverpool at 0556, 0656, 1156, 1256, 1756 and 1856 and Scarborough at 0846, 0946, 1446, 1546, 2050 and 2149.
TPE Pledges Capacity Boost With Class 68/Mk 5A Sets
The title of this post is the same as that of an article in Issue 851 of Rail Magazine.
It adds a few extra details to those, that I wrote about in Nova 3 On The Test Track.
This information is revealed.
The Route
The TransPennine Express fleet will run on the Liverpool Lime Street-Manchester Airport-Scarborough/Middlesbrough Routes, replacing three car Class 185 trains.
Train Length
Each Mark 5A car has a length of 22.2 or 22.37 metres.
Adding on the Class 68 locomotive gives a train length of 131.84 metres.
This compares with a train length for the Class 185 train of 71.276 metres.
It means that two Class 185 trains working together, which is current practice, are longer than the new fleet.
This must limit platform and depot modifications.
The Capacity
The number of seats on the two trains are as follows.
- Class 185 train – 15 First Class – 165 Second Class
- Class 68/Mk 5A sets – 30 First Class – 261 Second Class
This gives twice as many seats in First Class and nearly sixty percent more in second.
Both trains seem to have around sixty seats in each car.
Technical Characteristics
The Rail Magazine article gives several technical characteristics.
- Each coach has two passenger doors, except the First Class coach which has one.
- There is Selective Door Opening controlled by GPS.
- Door controls are in the Driver Trailer and Class 68 cans, which the driver controls.
- Two door control panels are in every vehicle for usde by the conductor.
- Wheel Slip Protection is fitted.
- Automatic passenger counting is provided.
- Wi-fi is fitted.
The trains have a high specification.
