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HIGH ENERGY DENSITY INDUCTIVE COILS FOR APPROXIMATELY 300 MA SPARK CURRENT AND 150 MJ SPARK ENERGY FOR LEAN BURN ENGINES
HIGH ENERGY DENSITY INDUCTIVE COILS FOR APPROXIMATELY 300 MA SPARK CURRENT AND 150 MJ SPARK ENERGY FOR LEAN BURN ENGINES
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机译:高能量密度感应线圈,适用于稀燃发动机的约300 MA火花电流和150 MJ火花能量
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摘要
A high energy density and high efficiency inductive ignition coil for IC engine achieved by the use of biasing magnets (14/15) located at the end (16/17) of an open-E laminated core to raise the coil energy to five times typical, i.e. of approximately 150 mj and to double the coil efficiency including novel use of coil winding structure (12/13/20/21) with a primary winding turns (Np) of between 70 and 86 and primary inductance Lp of between 700 uH and 1,100 uH, and a low turns ratio (Nt) of 53 to 67 allowing for a short, efficient, cylindrical coil, with secondary turns (Ns) of 4,000 to 5,000 turns with current of approximately 330 ma which is predominantly in the high glow and low arc discharge mode, with a special ratio R defined as Np/Nt and equal to between 1.15 to 1.45, and the coil being small and light enough to be directly mounted on the spark plugs or near the plugs in a region of high squish flow in an engine.
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