Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-04-10
1982-10-05
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
123485, 307246, 307268, 307494, 320 1, H03K 402, H03K 412
Patent
active
RE0310514
ABSTRACT:
In fuel injection ignition systems, it is necessary to provide control of the open time of the fuel injector valves which varies with the engine speed. However, for efficient operation with a minimum of pollution, the relationship of valve open time to engine speed is not a simple relationship, and factors other than engine speed are involved. It has been found that the open time should change with engine speed by steps not directly related to engine speed. This can be accomplished by providing a waveform which varies with time across a capacitor by a regulator system which controls both increase and decrease of the voltage across the capacitor. This voltage waveform, which varies with time and is independent of engine speed, can then be combined with a ramp voltage initiated at a particular point of rotation of the engine at the time the injector valves are opened. The valves can then be turned off when the combined voltage has the desired relation to a voltage produced by manifold pressure to provide the required open time for the injector valves.
REFERENCES:
patent: 2920217 (1960-01-01), House
patent: 3430073 (1969-02-01), Leonard
patent: 3559098 (1971-01-01), Chandos
patent: 3643180 (1972-02-01), Shimamuya
Davis William F.
Frederiksen Thomas M.
Shumway Howard G.
Jones, Jr. Maurice J.
Motorola Inc.
Zazworsky John
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