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boonhet@sopuli.xyz 3 weeks agoDiesels get modified to run CNG all the time where I’m from, but I’m not entirely sure how much extra modification they require. LPG conversations on gasoline engines are much simpler, but the diesel CNG conversions exist too - just not for passenger cars generally.
I assume that have to lower the compression ratio somehow and that’s why they cost so much more than the gasoline to LPG conversions
RedEyeFlightControl@lemmy.world 3 weeks ago
Diesels that run CNG/Prop run it WITH the Diesel as an additive/power boost/starter aid. It is not a replacement fuel.
Propane/CNG injection is done through the intake manifold, not the injectors/fuel system. A diesel cannot and will not run solely on sparkable fuel.
boonhet@sopuli.xyz 3 weeks ago
Ah, I was not aware. I always did wonder how they did it on converted equipment, as the factory-built CNG buses here have something like a 13.6 compression ratio not 19ish like the diesels that get converted.
Kind of misleading then that the company doing the conversions doesn’t mention it.