Internal-combustion engines – Charge forming device – With fuel pump
Patent
1992-05-21
1993-12-07
Miller, Carl S.
Internal-combustion engines
Charge forming device
With fuel pump
123506, F02M 3900
Patent
active
052675467
ABSTRACT:
A method and apparatus for controlling the flow of fuel for a gasoline or diesel gasoline engine controls a solenoid valve for actuating the fuel pump. A pump piston is driven by the camshaft and, in turn, pressurizes the fuel for delivery to the individual cylinders. Based on the operation of the solenoid valve, the beginning of the injection of fuel and the end of the injection of fuel are established Based upon spaced angular markings on the camshaft, a control unit determines the trigger signals for actuating the solenoid valve. To calculate the trigger signals, the markings on the camshaft are counted and interpolated therebetween over time. The interpolation is based on the instantaneous rotational speed N of the camshaft, which is sensed immediately before performing the interpolation.
REFERENCES:
patent: 4395987 (1983-08-01), Kobayashi
patent: 4495915 (1985-01-01), Shinoda
patent: 4503820 (1985-03-01), Nakagawa
patent: 4546749 (1985-10-01), Igashira
patent: 4642793 (1987-02-01), Miyaki
patent: 4653454 (1987-03-01), Konishi
patent: 4782803 (1988-10-01), Kikuchi
patent: 4884549 (1989-12-01), Kelly
Graf Herbert
Karle Anton
Lauvin Pierre
Rodriguez-Amaya Nestor
Schmitt Alfred
Miller Carl S.
Robert & Bosch GmbH
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