Direct Injection Gas Engines
With the trend to direct injection gas engines what happens going down a hill on compression. Diesel engines without intake butterflies have little hold back on compression, so I assume that gassers w...
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Your assumption is wrong. Direct injection gas engines still have air flow throttled, so will have a butterfly valve or equivalent on the air intake, and some kind of air flow sensor. This is not something new, M-B was running D-I gasoline racing engines in at least as early as the 1950s, and they were throttled too.
Direct injection of a spark ignition engine does not turn it into a Diesel-cycle compression ignition engine. As diesels go to direct injection, losing the benefit of injection into the narrowly defined combustion environment of a pre-combustion chamber, we may find they need air flow management as well.
Direct injection of a spark ignition engine does not turn it into a Diesel-cycle compression ignition engine. As diesels go to direct injection, losing the benefit of injection into the narrowly defined combustion environment of a pre-combustion chamber, we may find they need air flow management as well.
