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Old 06-19-2009, 11:28 AM   #15 (permalink)
tasdrouille
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Diesel direct injection combustion is pretty complicated, and I don't understand it fully. The fuel starts to burn up as it exits the injector nozzle after a short ignition delay. So there's tiny burning fuel droplets swirling in the piston's bowl. When you add propane, which is injected upstream in the intake, you get an additional homogeneous mixture adding a whole new dimension to the combustion.
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