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Re: Glowplugs in diesel tractors...
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Posted by Ron on May 30, 2004 at 03:08:08 from (69.179.2.158):
In Reply to: Glowplugs in diesel tractors... posted by Jeremy Cope on May 29, 2004 at 23:38:55:
The entire operating principle of a diesel engine is that when you compress a gas, you heat it. In a diesel, the gas (air) is mixed with fuel and due to the high compression ratio (14:1 - 30:1) so much heat is put into the cylinder the air/fuel mixture self-ignites. As far as starting goes, many old diesel engines had no starting aid. In warm weather, with lots of heat in the air, they started fairly easily. In cold weather, getting them started caused a lot of new cuss words to be invented. Later, things like ether squirted into the intake manifold (dangerous but effective) and intake air preheaters (think the heating element in a toaster) were used. Then came glow plugs. Ask your relatives and I'm sure they will tell you that getting a diesel started, especially in cold weather, is dependent on four things: 1) The starting system must be perfect... batteries, cables, starter. 2) The injector pump and injectors must be perfect. 3) Injector pump timing must be right on the money. 4) You must be using the right fuel and it must be free of water. I've learned that in a very cold climate, block heaters and synthetic oil are very helpful.
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