“Advanced diesel engines of today” they are talking about are the tiny car engines that have been smoking the gas guzzlers in performance in cars that weigh next to nothing.
Diesel fuel has more energy per gallon than gasoline so a gas fueled engine of the same design cannot out perform its diesel powered counterpart. Give me a diesel engine with the same type of research and technology that went into this gas burner and you will have the winner.
Diesel is where the POWER is! No mention of ft-lbs of torque required to move a multi-ton load across the contenent.
The army developed a variable compression dual fuel engine for trucks and it was a mechanical disaster.
Actually, I would go with “the promised fuel economy is at roughly the lower bounds of diesel fuel economy” as a criticism.
No surprise since a 14:1 compression ratio, the upper limit of the varialble compression scheme described, is also about the lower limit of diesel compression ratios.
This should translate into a peak efficiency somewhere around 14-16 HP per gallon of fuel burned per hour given that gasoline engines seem to top out around 13 HP per gallon per hour, with 10 or 11 being more typical.
Diesels by comparison, with compression ratios running to about 20:1 in a few engines, can make up 20 HP per gallon per hour.
I’m not making light of peak efficiency of up to 14-16 HP per gallon per hour from gas, mind you.
“No mention of ft-lbs of torque required to move a multi-ton load across the contenent.”
Are you referring to truck or train?
Diesel is power, and if I am not mistaken, a barrel of crude cannot be turned into a barrel of gasoline without massive waste. There’s a role for gasoline and diesel and even the electrics and cng. No one size fits all.