Quote:
Originally Posted by diesel_john View Post
but the air fuel ratio on the diesel can be as high as 200 to 1. so at light loads i am pumping a lot of extra air for no reason.
what i want to do is reduce the effective displacement at light loads.
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Diesels don't really pump air, they move it. A diesel engine takes air at ~14.5pisa and evacuates it at ~14.5psia. A gasoline engine does pump air because it takes it from anywhere from ~4 to ~14.5 (best case WOT) and evacuates it at ~14.5 pisa.