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Old 11-08-2012, 05:07 PM
robertobaggio20 robertobaggio20 is offline
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Join Date: Oct 2009
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Mein Auto: car
Quote:
Originally Posted by robertobaggio20 View Post
The car runs at higher rpms at idle when cold, to heat itself up faster.
Quote:
Originally Posted by _Ethrty-Andy_ View Post
Not true, but what i think you are meaning is that the trans shifts later when cold. However, before posting anything like this, you need to
This is incorrect, at least for the M50 engine. When cold, the car's idle is around 250-300 rpms higher and the gear shift points are also later (for automatics). These two features are there to generate more heat and to heat up the engine faster.

An engine takes anywhere fro 6-10 minutes to reach operating temperature from cold, depending on whether you're idling or driving throughout. Optimal temperatures ensure that the most efficient combustion is taking place and thus the least amount of fuel is wasted (there may be other reasons as well), according to the engine's design.



rgds,
Roberto

Last edited by robertobaggio20; 11-08-2012 at 05:25 PM.
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