Thanks for the clarification. Mike
> Mike wrote: > >> All, >> Here is a basic rundown......forklift tank to regulator set >> at one psi, electric shutoff valve opens only when engine is >> running, micro switch on throttle linkage opens second valve >> to allow propane to go to homemade nozzle(copper tubing with >> the end crimped and holes drilled on one side along it's >> length so the gas mixes with the incoming air) only at half >> throttle or more. The idea isn't to add more fuel but to add >> a tiny bit of propane to help the diesel burn. > >> I can't think >> of a better term than catalyst.......works just like NOS in a >> gasser. > > NOS (N2O) is a convenient way to add oxygen for the fuel to burn. > > Propane has no oxygen with it, so for it to burn there must be > available oxygen from the air. Instead, the propane helps > spread the flame front evenly. > > > from http://www.mrsharkey.com/lpg.htm > > Introducing LPG gas into the combustion air intake of a > diesel engine acts as an accelerant, promoting the even > burning of the diesel fuel, and more complete combustion, > resulting in more power being produced. Many web pages > and forum posts will call LPG a "catalyst" but this is > not correct, as LPG creates no change in the molecular > makeup of either the air or the diesel fuel. > > Propane by itself will not self-ignite inside a > diesel-fuel compression-ignition engine. During the > compression stroke, the air/LPG mixture is compressed and > the temperature is raised to about 400°C, not enough to > ignite the LPG, which has an ignition temperature of > about 500°C. When the diesel fuel is atomized into the > cylinder under high pressure, it immediately self-ignites > (diesel ignites at about 385°C.), and causes the LPG to > burn as well. Since the LPG is in mixture with the air, > the flame front from the diesel spreads more quickly, and > more completely, including igniting the air/fuel mixture > which is in contact with the cylinder walls, which are > cool in comparison to the super-heated air inside the > combustion chamber. Much of the cleaner burning of the > fuel is attributed to this ignition against the "cooler" > components of the engine, and accounts for raising the > percentage of combustion from a typical 75% for a > well-tuned diesel engine running on pure diesel fuel > alone, to 85-90% with the addition of LPG. Obviously, > this more complete combustion also gives a nice boost in > power, with an accompanying increase in fuel economy and > reduction of pollutants. > > > -- Philip > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
