Controlling device for the start of injection in an internal com

Details Controlling device for the start of injection in an internal com Controlling device for the start of injection in an internal com

1982-09-13

1986-05-20

Miller, Carl Stuart

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123500, 123198D, 123501, F02M 3900

Patent

active

045893918

ABSTRACT:
A device is proposed for controlling the injection start to a set-point value dependent on operating parameters, in which the period of time between the appearance of an injection start signal and a reference marking (for instance, a top-dead-center signal) is counted out and the result of counting is compared with the set-point value. To avoid malfunctioning, the triggering of the counting process is possible in only one, predetermined crankshaft angle range. Various values are provided for the counting-out frequency. In the exemplary embodiment they are within the range between 50 and 200 kHz. In case of failure, a control of injection onset is effected, and as needed, a limitation of the fuel quantity as well--for instance to 70% of the respectively determined quantity.

REFERENCES:
patent: 4355621 (1982-10-01), Yasuhara
patent: 4370961 (1983-01-01), Brown
patent: 4378775 (1983-04-01), Straubel
patent: 4395905 (1983-08-01), Fujimori

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