Knocking?????????
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Posted by: matin ® 05/23/2006, 14:29:51 Author Profile eMail author Edit

Does knocking is more common in engines running on rich or lean air fuel mixtures,I read in an article that says that it is very common when running on lean mixtures why is that secondly why engines running at lean mixtures tend to run at high exhaust temperatures. For gas engines that usually run on lean mixtures exhaust temperatures ted to go up as the mixture becomes leaner and fuel being in the form of gas mixes completely with air causing the flash point(ignition temp) to up.

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Re: Knocking?????????
Re: Knocking????????? -- matin	Post Reply	Top of thread	Forum

Posted by: colormecrazy ® 05/25/2006, 00:42:57 Author Profile eMail author Edit

Ted Martin, yes, knocking occurs. most common engines run on rich or lean air fuel mixtures.(but,not as well as intended).i read in an article(i forget where i read it) that says that it is very common, when running overly advanced timing(retard timing to reduce knocking). secondly, yes, engines running at more oxygen mixtures tend to run at high exhaust temporatures (more oxygen=more heat). yes, for gas engines that usually run (apposed to don't usually run), lean mixtures cause exhaust temporatures to go up, Ted, as the mixtures become leaner(more air less fuel). fuel, being in the form of gas (because it was a gas engine), mixes with air. ignition causes the flash point to up the temporature(in an explosion called combustion). hope the facts will help. GOOD LUCK COLORMECRAZY Modified by colormecrazy at Thu, May 25, 2006, 00:44:53

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