[SpamCop-Social] Re: Car stuff!
borgholio at storymind.com
Thu Sep 8 16:53:25 EDT 2005
> Pete Stephenson <pete+usenet at heypete.com> wrote in news:pete+usenet-
> 7AB2F6.15375508092005 at news.cesmail.net:
>>>glow plugs? eh wot? must be a diesel thing!
>>Yup. In gasoline-powered cars, the fuel/air mixture is ignited by the
>>sparkplug. In a diesel, the air is compressed to very high pressures
>>(22:1), which heat it up. The fuel is then injected, and ignites on
>>contact with the hot air. When the engine is cold, sometimes the starter
>>motor cannot deliver enough compression to heat the air. The glow plugs
>>are small heaters in each cylinder which warm the air up to an
>>appropriate temperature. Usually it takes about 3-4 seconds for the
>>plugs to heat up to the right temperature, after which the "wait" light
>>turns off, and one can start the engine normally.
> ooooooh, I seeeeee. I wonder how long it takes in really cold places (like
> Maine in winter!). I seem to recall seeing 'winter diesel' on sale in
> England too, I assume they must change the fuel somehow to cope with the
> cold weather.
For my very first car, I test-drove a couple diesels. The glow plugs on an
80's VW Rabbit took about 6 seconds or so even in SoCal. I know they can
take much longer in cold weather.
More information about the SpamCop-Social