Airo - Amfleet I replacement Siemens Inter City Trainsets (ICT)

[west point]

4200hp is the Chargers power in diesel mode but as of now the electric versions HP is unknown.

It is somewhat more complicated than that. First specifications.

Fuel type Diesel Fuel capacity SC-44/SCB-40: 1,800 US gal (6,800 L; 1,500 imp gal) ALC-42/SCV-42: 2,200 US gal (8,300 L; 1,800 imp gal) Prime mover Cummins QSK95 RPM range 600–1,800 Engine type 45° V16, four stroke cycle Aspiration Turbocharger Displacement 95 liters (5,800 cu in)[3] Traction motors Siemens 3-phase AC induction motors; 978 hp (729 kW) each Head end power 660 or 1,000 kW; 3φ, 60 Hz, 480 V AC Cylinders 16 Cylinder size 5.9375 liters (362.33 cu in) Transmission AC–DC–AC Loco brake Dynamic, regenerative, electropneumatic Train brakes Electropneumatic Safety systems Positive train control: ACSES II, I-ETMS

hidePerformance figures Maximum speed 125 mph (200 km/h) Power output SCB-40: 4,000 hp (3,000 kW) ALC-42/SCV-42: 4,200 hp (3,100 kW) SC-44: 4,400 hp (3,300 kW) Tractive effort Starting: 290 kN (65,000 lbf) Continuous: 275 kN (62,000 lbf) Factor of adh. 4.07 (24.57%)

So in E mode almost 8000HP tractive effort for an ICT if same tractions motors in APV. 978 x 8 = 7824HP; In diesel mode you have the QSK rating and subtract the variable HEP draw = HP available to traction motors. Now to complicate it further tractive effort cannot be more than adhesion factors which can be less than available HP mostly at speeds below 12 MPH but can be higher with slippery rail.

 

[Touchdowntom9]

It is somewhat more complicated than that. First specifications.

Fuel type Diesel Fuel capacity SC-44/SCB-40: 1,800 US gal (6,800 L; 1,500 imp gal) ALC-42/SCV-42: 2,200 US gal (8,300 L; 1,800 imp gal) Prime mover Cummins QSK95 RPM range 600–1,800 Engine type 45° V16, four stroke cycle Aspiration Turbocharger Displacement 95 liters (5,800 cu in)[3] Traction motors Siemens 3-phase AC induction motors; 978 hp (729 kW) each Head end power 660 or 1,000 kW; 3φ, 60 Hz, 480 V AC Cylinders 16 Cylinder size 5.9375 liters (362.33 cu in) Transmission AC–DC–AC Loco brake Dynamic, regenerative, electropneumatic Train brakes Electropneumatic Safety systems Positive train control: ACSES II, I-ETMS

hidePerformance figures Maximum speed 125 mph (200 km/h) Power output SCB-40: 4,000 hp (3,000 kW) ALC-42/SCV-42: 4,200 hp (3,100 kW) SC-44: 4,400 hp (3,300 kW) Tractive effort Starting: 290 kN (65,000 lbf) Continuous: 275 kN (62,000 lbf) Factor of adh. 4.07 (24.57%)

So in E mode almost 8000HP tractive effort for an ICT if same tractions motors in APV. 978 x 8 = 7824HP; In diesel mode you have the QSK rating and subtract the variable HEP draw = HP available to traction motors. Now to complicate it further tractive effort cannot be more than adhesion factors which can be less than available HP mostly at speeds below 12 MPH but can be higher with slippery rail.

This assumes 4 motors in the APV and 4 in the Loco, correct?

 

[Touchdowntom9]

NJTransit runs 8 MLVs using a single ALP45DP, so it is not as if the train will not move if it has only 4200HP. But it won't be very nippy. I also do not think they will ever go to a ten car set since its usefulness with full utilization may be somewhat limited. It is better to run two 6-8 car trains than one ten car train, unless you are in deamnd situation like in India, in which case 10 cars is a little less than half of what you need in a consist



My suspicion is that the electric gear will be sized to supply the power that 4 trucks can handle, so the HP could be double that of the diesel mode. But we will know for sure only when they choose to let us know.

Wouldn’t it be pretty easy for the Airos to still use the APV motors while in desiel territory under the prime mover? Sure you now would have 4200 HP split across up to 8 motors instead of 4, but doesn’t that help improve tractive effort and acceleration? I would think the required equipment is already in place since it’s equipped to work that way in electric territory

 

[jis]

It is quite possible that a bulk of the Airo order will actually be manufactured in this new Siemens facility...

Siemens Mobility Breaks Ground on $220MM N.C. Train Manufacturing Facility Expansion - Railway Age

Siemens Mobility on Aug. 23 broke ground on its $220 million advanced manufacturing and rail services facility in Lexington, N.C., which the company says will “create more than 500 new jobs and be of one of the city’s largest employers.”

www.railwayage.com

 

[Mailliw]

This article has some new interior mockups.

Amtrak divulges fresh details about Airo passenger experience - Runway Girl

Ask anyone who has ridden Amtrak in the Northeast about their passenger experience on board, and they’ll almost certainly say something along the lines of 'comfortable and basic'. But change is afoot. First announced back in 2021 and recently expanded to include additional railroad cars in...

runwaygirlnetwork.com

 

[Steve4031]

That’s an improvement over the venture cars. Hopefully the location of the usb-c plugs will be easier to reach.

 

[blueman271]

This article has some new interior mockups.

Amtrak divulges fresh details about Airo passenger experience - Runway Girl

Ask anyone who has ridden Amtrak in the Northeast about their passenger experience on board, and they’ll almost certainly say something along the lines of 'comfortable and basic'. But change is afoot. First announced back in 2021 and recently expanded to include additional railroad cars in...

runwaygirlnetwork.com

These are going to be really nice when they finally enter service in 2030.

 

[TC_NYC]

Finally improving the Business Class experience. Glad they're improving them compared to the Amfleets.

 

[Septa9739]

I wonder which "version" was ordered?

I happened upon the answer to the 10 options question by accident today. It was 8-8car sets for the NEC and 2-6 car battery sets for the Empire Service. It was hinted at in the 2022-2027 plan. That brings the projected size of the Airo fleet to 562 cars, about the current size of Amfleet 1 and 2 combined.

 

[AmtrakGuy365]

Well, to be fair, Siemens is good at fixing problems. No matter what, they try and perfect their products. About 99% of the time, they succeed.