engine idling
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From: Midwest. Aiming about mid-chest
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Re: engine idling
Without a lengthy technical explanation.......it's designed that way.
Almost all gas engines are designed and programmed to idle faster while cold because a cold engine is very inefficient and difficult to run (requires a lot of extra fuel and air) and it runs unstable at a low rpm cold.....and fast idle speeds up warmup a little bit.
Almost all gas engines are designed and programmed to idle faster while cold because a cold engine is very inefficient and difficult to run (requires a lot of extra fuel and air) and it runs unstable at a low rpm cold.....and fast idle speeds up warmup a little bit.
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From: Montreal
Rep Power: 118 Re: engine idling
but why we need to warm up the engine? the motor vehicle in quebec, say it is not important to run the engine more than 30sec and i think it make sense also because if we start engine and leave it in park or drive, both way pistons are working, engine is runing,
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Rep Power: 308 Re: engine idling
Without a lengthy technical explanation.......it's designed that way.
Almost all gas engines are designed and programmed to idle faster while cold because a cold engine is very inefficient and difficult to run (requires a lot of extra fuel and air) and it runs unstable at a low rpm cold.....and fast idle speeds up warmup a little bit.
Almost all gas engines are designed and programmed to idle faster while cold because a cold engine is very inefficient and difficult to run (requires a lot of extra fuel and air) and it runs unstable at a low rpm cold.....and fast idle speeds up warmup a little bit.
If there was NOT a reason for high idle when cold... then why do ALL manufactures autos do the same exact same thing ?
If you think a good mechanic is expensive, try hiring a bad one
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From: Midwest. Aiming about mid-chest
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From: Montreal
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i am not saying they are crazy or they just add it for pleasure, they spend million of dollars before making any model i am sure so there must be goods reasons, and this is what i want to know.
thanks
If you think a good mechanic is expensive, try hiring a bad one
Joined: Dec 2011
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From: Midwest. Aiming about mid-chest
Rep Power: 518 Re: engine idling
An unloaded slow running cold engine doesn't run with much stability and gasoline doesn't vaporize quickly in a cold engine.
Very easy to stall it with sudden load changes if the RPM is too low.
Very easy to stall it with sudden load changes if the RPM is too low.
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