propane injection system

Topics: Internal combustion engine, Diesel engine, Turbocharger Pages: 15 (5147 words) Published: January 26, 2014

INTRODUCTION

Diesel Performance Products introduces the Powershot 2000® propane injection system for turbo diesel owners who are looking for more power for towing increased mileage and throttle responsiveness out of their vehicles. With its innovative and patented design and method of propane delivery, this system is unique to other systems on the market and has overcome many of the drawbacks encountered with earlier designed injection systems. The Powershot is an infinitely variable-stage vapor injection system. It is controlled, activated and proportionate to the boost pressure of the engine. The Powershot comes on slow and steady and as the boost increases, so does the flow of propane. More boost=more propane=more power! It is fully adjustable and can be customized for your specific application in minutes for towing, performance or mileage gains. The easy-to-install Powershot system will safely and substantially increase horsepower (up to 100hp) and torque (up to 250 ft lbs). This unit is a must for towing and all- around performance increases. Modest mileage gains are an extra bonus. The system installs in about two hours and requires no permanent modifications to the vehicle or engine. The quality of the components is obvious: Custom LP regulators /Parker fittings, safety features such as custom auto/off rocker switches located inside the cab, and an automotive LP fuel lock-off solenoid valve located at the tank. All of the regulating is done at the tank eliminating the need for under hood installations and further enhancing safety concerns. The custom regulator maintains a constant tank pressure regardless of outside temperatures and delivers consistent, usable power at all boost levels.

Propane Fumigation

     Lately, I've been getting quite a lot of e-mail from folks who are interested in the LPG Fumigation system that I have installed on the Pusher, so it makes some sense to have a page dedicated to that subject, with at least as much as I know about it, and some links to other resources. What it is...and why:

     Simply stated, Propane (LPG) Fumigation is the introduction of gaseous propane into the air intake of a diesel engine for the purposes of attaining more power, economy, or both. The parallel is often made between fumigation and using Nitrous Oxide on gasoline vehicles to achieve a power increase. Basically, this analogy is correct, although the properly implemented use of LPG on a diesel engine will actually result in a better-running engine without the possible damaging effects that N2O has on gas motors.      Exhaust emissions are reduced as a result, with lower quantities of unburned hydrocarbons and fewer particulates (smoke). LPG fumigation will even clean up the odor of diesel fuel in the exhaust, making the smell from the tailpipe of an engine utilizing it much less objectionable. How it works:

     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. 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...

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