Electronic engine control interface

Details Electronic engine control interface Electronic engine control interface

1992-01-23

1994-03-22

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

36443111, F02D 4122

Patent

active

052954714

ABSTRACT:
An electronic fuel injection system in which an electronic engine control module connected to engine-position-responsive sensors generates a cylinder identification waveform which is synchronized with a fuel demand control waveform. The two waveforms are transmitted to an electronic driver module which distributes high-level actuating signals to the individual fuel injectors based on the two waveforms received from the engine control module. To assure the reliability of the communication link connecting the two modules, synchronized signal excursions on the two waveforms are displaced in time one from another by a preset delay interval. At the driver module, the delay interval between corresponding excursions on the two received waveforms is measured and, if the measured interval deviates substantially from the preset interval as transmitted, the generation of actuating pulses is inhibited to prevent potentially dangerous engine surging. Waveform generation and measurement is accomplished the microcontroller used to implement the engine control and driver modules.

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patent: 4825373 (1989-04-01), Nakamura et al.
patent: 4941445 (1990-07-01), Deutsch

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