Quote:
Originally Posted by silverhawk_184
But since, with the more dense air, more fuel is required to maintain the ratio, there should be a way to prevent this.
|
Yes but it still takes the same ammount of fuel and air to produce the same power and travel the same distance. You simply open the throttle plate less to burn the same amount of air and fuel. The net effect is no change in FE. Colder air also allows the engine to run its vest optimized spark timing for any given octane fuel. The only negative effect in cold weather comes from the longer engine warm up time, not denser air.