Analog to digital converter for electronic engine control system

Details Analog to digital converter for electronic engine control system Analog to digital converter for electronic engine control system

1978-02-27

1981-04-28

Gruber, Felix D.

Communications: electrical

Audible indication

Percussion-type sound producer

123198DB, 340347AD, 364431, 371 14, 371 20, H03K 1320, G06F 1130, F02B 7708

Patent

active

042648980

ABSTRACT:
A method and apparatus for controlling the various functions of an internal combustion engine using a program-controlled microprocessor having a memory preprogrammed with various control laws and associated control schedules receives information concerning one or more engine operating parameters such as manifold absolute pressure, throttle position, engine coolant temperature, air temperature, and engine speed or period and the like. These parameters are measured and then supplied to input circuits for signal conditioning and conversion to digital words usable by the microprocessor. The microprocessor system computes a command word indicative of a computer-commanded engine control operation and output circuitry responds to predetermined computer-generated commands and to the computed digital command words for converting them to corresponding pulse-width control signals for controlling such engine operations as fuel-injection, ignition timing, proportional and/or on-off EGR control, and the like.

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patent: 3688221 (1972-08-01), Fruhalf
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patent: 4094274 (1978-06-01), Harada et al.
patent: 4099495 (1978-07-01), Kiencke et al.
patent: 4119070 (1978-10-01), Asano
patent: 4150654 (1979-04-01), Heitzman et al.

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