F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
327/119, 341/25
F02P 19/02 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1284195
Abstract of the Disclosure Glow Plug Alternator Control The present invention pertains to a control system for igniting devices used in an internal combustion engine. In order to ignite alcohol fuel in a diesel engine, the fuel must be heated before or during compression. Glow plugs conveniently provide heat, but have a short life in such continuous applications. Glow plugs must be accurately controlled to prevent overheating, which leads to open-circuiting. Individual constant voltage controls attempt to provide this function, but are only moderately successful. They are costly and complex, and provide only moderate protection from overheating. Since glow plug resistance correlates to glow plug temperature, resistance control provides better protection against glow plug overheating. Therefore, an apparatus monitors the resistance of a single glow plug, and controls the resistance of each glow plug to a preselected resistance value. This preselected resistance value represents a glow plug temperature, that provides satisfactory fuel combustion combined with improved glow plug life. The principal use of the apparatus of the present invention is with internal combustion engines using alternate fuels.
552990
Jeffries James R.
Verheyen Michael Robert
Caterpillar Inc.
Kirby Eades Gale Baker
LandOfFree
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