Simon TR4a
Jedi Knight
Offline
For as long as I can remember I have believed that a lean mixture will cause an engine to run hot, and vaguely thought this was because it had to work harder to make the same power. This, I believed, is why a lean engine will sometimes run on when the ignition is turned off.
Circle Track publishes another magazine called "Engine Masters", which foolishly I have read, causing myself confusion!
They say a lean mixture burns more slowly, exposing the hot gases to the cooling cylinder walls for longer, and therefore running cooler, (and because of the slower burn requiring more spark advance.) Seems reasonable.
I also assume that a rich mixture also burns slower than an ideal mixture, so doeds the same thing, and also has a cooling effect on the piston crowns.
Can anyone add to my understanding, please?
Thanks, Simon.
Circle Track publishes another magazine called "Engine Masters", which foolishly I have read, causing myself confusion!
They say a lean mixture burns more slowly, exposing the hot gases to the cooling cylinder walls for longer, and therefore running cooler, (and because of the slower burn requiring more spark advance.) Seems reasonable.
I also assume that a rich mixture also burns slower than an ideal mixture, so doeds the same thing, and also has a cooling effect on the piston crowns.
Can anyone add to my understanding, please?
Thanks, Simon.