Gas engines in school buses coming back?
Just thought I' d post something a lil different. Got local school budget info and just like everything else in NYS, bigger budget. One item that caught my attention tho is bus purchases. Seems tha...
Forum Discussion
Sport45 wrote:
19” of vacuum is about 1/3 of an atmosphere. So a 8.8 liter engine idling is only drawing about 3 liters of air every 2 revolutions. I wouldn’t expect these engines to consume much more fuel at idle than the old carbureted big blocks. They will, of course, take more fuel to idle than a diesel but only because diesels can operate at a much higher air/fuel ratio than gas engines.
In cold climate, that may even be a plus, as a big block gas can generate enough heat without a Wabasto.
More importantly, the lower operating costs of a gas may out-weigh any fuel savings of a diesel. The extra 3 mpg becomes negligible after a $10k pump / injector / fuel lines repair, or $5k emissions job...
