Scott Kenny
ACCESS: USAP
- Joined
- 15 May 2023
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That is a failure of the current rules system.There is no “400kw diesel-electric generator” that is EPA certified for on highway use.
Also, what is the actual difference between the emissions of a stationary generator and an equal-power road-going diesel? I'm talking grams of CO2 per unit power, not the fact that US EPA insists on grams CO2 per mile.
Because it's an engine that I could find a current weight for that makes a fairly typical road-going diesel power. Else we're talking something in the 600-800hp power class.Caterpillar left the highway diesel market back in 2008, so I can’t imagine why the weight of the C13 is relevant?
Potentially valid, but hydraulic motors don't like freeway speeds.Moreover, hooking up a diesel to a generator results in much greater weight and power losses than mechanical transmission. This is precisely why small diesel shunter locomotives are often diesel hydraulic while the larger mainline locomotives are diesel electric. Diesel electric drive doesn’t scale down very well. It certainly doesn’t scale down to Class 8 trucks.
Wrong, the current e-axles are LIGHTER than a mechanical differential.Class 8 trucks, aside from Tatras, invariably use live axles which makes a differential mounted electric motor a problem in terms of unsprung weight, making an electric Class 8 truck much harder on the road surface than a direct drive diesel with the same maximum weight.