Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1988-11-18
1990-03-13
Argenbright, Tony M.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123179BG, 123596, F02P 308
Patent
active
049075624
ABSTRACT:
The invention relates to a method for achieving elevated charging of an ignition capacitor in a capacitive type ignition system for internal combustion engines. When starting a cold engine or when starting the engine under other conditions in which the battery capacity is low, activation of the engine starting motor will result in a drop in voltage in the electric system serving both the starting motor and the ignition system. The voltage drop in the electrical system will vary sinusoidally synchronously with the crankshaft rotation, owing to the fact that the starting motor will momentarily subject the electrical system to higher loads when the pistons are located adjacent their top-dead-center position L in the compression stroke. The method solves this problem, by delaying the re-charging of the capacitor until a position is reached in which the voltage drop in the electrical system has its lowest value.
REFERENCES:
patent: 4541390 (1985-09-01), Steinbrenner et al.
patent: 4683859 (1987-08-01), Tamura et al.
patent: 4785789 (1988-11-01), Johansson et al.
Johansson Hans
Nytomt Jan
Argenbright Tony M.
Saab-Scania Aktiebolag
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