Diesel propane question.
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Post Fiend
Joined: Jan 2003
Posts: 8,600
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From: Iowa
Diesel propane question.
First off, I'm not a "diesel guy". The closest I've come to a diesel is a 3 cylinder NA Kubota tractor. But I have a question that's been bugging me for a while now, so I'll ask:
How does propane injection work in diesels? I'd think it would combust before TDC, and reduce power. But obviously it works good since a lot of people use it. Someone explain the theory of this stuff and how it doesn't destruct your engine.
Just curious.
How does propane injection work in diesels? I'd think it would combust before TDC, and reduce power. But obviously it works good since a lot of people use it. Someone explain the theory of this stuff and how it doesn't destruct your engine.
Just curious.
Senior User
Joined: Jun 2003
Posts: 452
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From: SC
I will try. This is what I learned when I did my homework before installing propane on my truck. This is just the gist of it. The propane has to have a spark to ignite, so it will not burn until the compression stroke is ignited. The Propane acts as a catalyst and bonds to the propane giving you a complete burn of the fuel in the cylinder. This is where you get your mileage increase and also a good shot of HP. somewhat, if you will, like nitrous on a gas motor. I know nitrous is not flammable, but propane is, it kind of like works the same. If you see a diesel blowing black smoke, that is just wasted unburnt fuel. The Propane helps burn all of that.
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