3 ms·
The huge stride in efficiency recently has been made possible by direct injection. Engines no longer have to work hard to pull intake air through a mostly close
by voodooranger 9y ago
The huge stride in efficiency recently has been made possible by direct injection. Engines no longer have to work hard to pull intake air through a mostly closed butterfly valve. Attributing this advancement to govt regulation is preposterous. Just as regardless of whether govt had mandated faster processors, industry would have created them anyway.
- oppositelock 9y agoDirect injected engines still have throttle butterfly valves, or something complex like VANOS to simulate one with valvetrains. Air and fuel must mix at a correct ratio, if you're requiring little power, you need little air and little fuel. Lots of air and low fuel gets you detonation.