Why do the US general truck manufacturers cut off the offered power at 605 hp?

[💗Blaaashyyy💗]

And don't offer trucks with engines like Scania or Volvo with 750 hp etc? I'm not talking about specialist trucks here, because both in Europe and in USA specialist trucks are done by different companies, but it's not totally uncomon that a company or owner operator to have a around 700 hp truck from either Scania or Volvo in Europe, and both companies are more than happy to offer you such a truck. Why don't US companies offer such engines in general?

[Priest~Of~Auril]

Shhhhhh Murica Trucks are stronk!

[hackintoshchap]

They probably feel that 600HP with torque is fine.

FYI, Volvo in Europe is rumoured to be testing a 850HP tractor unit at present. Seen a UK truck magazine photo of the badge and text saying that its still under wraps.

[Lord-Knight Fandragon]

850HP truck, damn, thing is practically a sports car at that point.

Maybe US trucks top out at 605 cuz companies always put governors on thier trucks, so 750hp is a waste, since they cant use it anyway.

[hackintoshchap]

I don't know how they would get a diesel engine like this around Emissions regulations though - It could be a Hybrid model or using non fossil fuel.

https://www.volvogroup.com/en/future-of-transportation/innovation/electromobility/hydrogen-fuel-cells/fuel-cell-joint-venture.html

This isn't the original source I saw, but a similar one with the same image:
https://www.instagram.com/p/CeLqEqNsf9r/?utm_source=dlvr.it&utm_medium=twitter

[💗Blaaashyyy💗]

Originally posted by Lord-Knight Fandragon:

850HP truck, damn, thing is practically a sports car at that point.

Maybe US trucks top out at 605 cuz companies always put governors on thier trucks, so 750hp is a waste, since they cant use it anyway.

What are you talking about? EU trucks are even more limited in speed than US ones. We're talking mostly torque here. US trucks in general, are currently limited at 2000lbft. While EU trucks can reach as high as over 2620lbft / 3550 nm, or probably even more with 770 hp Scania engines.

[💗Blaaashyyy💗]

Oh yea, Scania's 770 HP engine has 3700 Nm, which means 2730 lbft. Thanks to all that they can gain their maximum speed faster and climb way more effective than regular 450/500 engines with much lower torque. Same would be true for US trucks. There are plenty of places where better climbing abilities would be surely welcomed by truckers.

[Actionjackson]

The truck speed limit in the US is way higher than in EU, so in average they are probably still quicker on a long trip since they have higher average speed.
A short and slow climb does not cost a lot of time if you can blast with 70 or more mph the rest of the time.
In EU all you ever get is 80kmh.

[MirkoC407]

Technical limit for trucks in Europe is 90 km/h. It is also maximum permitted speed in several countries, e.g. Spain and France.

[💗Blaaashyyy💗]

Originally posted by Actionjackson:

The truck speed limit in the US is way higher than in EU, so in average they are probably still quicker on a long trip since they have higher average speed.
A short and slow climb does not cost a lot of time if you can blast with 70 or more mph the rest of the time.
In EU all you ever get is 80kmh.

You realise that US is not flat? There are many places in the west when you have to climb most of the time. 750 hp trucks aren't suuuuper popular in Europe either, but if you need and want one, you can get it. Still doesn't explain why US manufacturers don't offer higher HP engines.

[Qrazy]

Originally posted by Blash:

. Still doesn't explain why US manufacturers don't offer higher HP engines.

Money would be my guess

[The.Duck]

Quick lesson: Horsepower doesnt move the truck down the road, torque does.

[💗Blaaashyyy💗]

Originally posted by The.Duck:

Quick lesson: Horsepower doesnt move the truck down the road, torque does.

Quick lesson: US trucks in general, are currently limited at 2000lbft. While EU trucks can reach as high as over 2620lbft / 3550 nm, or probably even more with 770 hp Scania engines. Oh yea, Scania's 770 HP engine has 3700 Nm, which means 2730 lbft.

[RynoHawk]

Originally posted by Qrazy:

Originally posted by Blash:

. Still doesn't explain why US manufacturers don't offer higher HP engines.

Money would be my guess

Money and emissions standards would be my guess.

[wolfedg]

Originally posted by RynoHawk:

Originally posted by Qrazy:

Money would be my guess

Money and emissions standards would be my guess.

Money, Emissions and California.

[💗Blaaashyyy💗]

Now that you bring it up, I DID hear that Caterpillar stopped offering their engine for semi trucks, exactly because they either couldn't meet the emissions restrictions, or couldn't be bothered with trying.

But then again, I hardly believe that emissions restrictions are higher for Europe than USA. Anyone has data on emissions on, lets say, Cummins X15 Performance 605 vs Scania's DC16 107 730 Euro 6 V8?