Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1978-02-27
1981-03-17
Gruber, Felix D.
Communications: electrical
Audible indication
Percussion-type sound producer
340347CC, 364431, H03K 1320, H03K 1302
Patent
active
042570344
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. The microprocessor-based control system 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 sensed or measured and the analog sensor output signals are supplied to input circuits for signal conditioning and conversion into digital words usable by the microprocessor system. The microprocessor system computes a digital word commanding a particular computer-commanded engine control operation and output circuitry responds to particular 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, or the like.
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patent: 3493961 (1970-02-01), Hansen
patent: 3612975 (1971-10-01), Keefe
patent: 3613112 (1971-10-01), Kanter
patent: 3665305 (1972-05-01), Petrohilos
patent: 3685048 (1972-08-01), Pincus
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patent: 3725905 (1973-04-01), Tunzi
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patent: 3961325 (1976-06-01), Kendall et al.
patent: 4118698 (1978-10-01), Becker
Gruber Felix D.
Haas, Jr. Gaylord P.
The Bendix Corporation
Wells Russel C.
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