Internal-combustion engines – Charge forming device – With fuel pump
Patent
1991-06-24
1992-04-21
Cross, E. Rollins
Internal-combustion engines
Charge forming device
With fuel pump
123419, 123436, 123414, F02D 4126, F02P 514
Patent
active
051057883
ABSTRACT:
A fuel injection system, in which the injection quantity and the start of injection are controlled with solenoid valves, in view of engine-specific data and various parameters. Rotational-speed pulses are measured at the camshaft and/or at the crankshaft. Trigger times, which establish the start of injection and the injection quantity, are calculated on the basis of the rotational-speed pulses and a start-of-injection reference mark. Based upon an instantaneous rotational speed before the metering-in stage, an estimated value is determined, and based upon an instantaneous rotational speed during the metering-in stage, a control value is determined. The estimated value is compared to the control value and, if need be, the estimated value is adjusted.
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Cross E. Rollins
Moulis Thomas N.
Robert & Bosch GmbH
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