Electronic engine control system with emergency operation mode

Details Electronic engine control system with emergency operation mode Electronic engine control system with emergency operation mode

1982-02-03

1985-07-23

Gruber, Felix D.

Boots, shoes, and leggings

123479, 371 66, F02P 1106, F02P 502, G01R 19165

Patent

active

045311900

ABSTRACT:
To permit continued operation of a vehicle in spite of malfunction of an electronic ignition computer system, or any other electronic control module in an automotive vehicle, a transducer (10) provides an output to a trigger stage which has its output connected a digitally operating microprocessor (17) and to a bypass or transfer switch (21). The output from the microprocessor is connected to an analog and operating output stage (19, 20) to be controlled by the digital system of the microprocessor (17). Upon sensing of low operating voltage (U) as determined, for example, by a threshold switch (22), or of starting condition the switch (21) is closed, bypassing or interrupting connection to the microprocessor, and directly connecting signals from the transducer output stage to the input of the ignition circuit to permit operation under emergency conditions. The analog portion of the system is a single integrated module, separate from the digitally operating microprocessor (17) for ease of error diagnosis, maintenance and repair. This is particularly important with digitally operating control systems (17) which are subject to malfunction under low voltage conditions or upon occurrence of stray or distrubance signals in the network, for example under starting conditions.

REFERENCES:
patent: 4099495 (1978-07-01), Kiencke et al.
patent: 4174688 (1979-11-01), Honig et al.
patent: 4201163 (1980-05-01), Hattori et al.
patent: 4210111 (1980-07-01), Hattori et al.
patent: 4236214 (1980-11-01), Sasayama
patent: 4244050 (1981-01-01), Weber et al.
patent: 4245315 (1981-01-01), Barman et al.
patent: 4255789 (1981-03-01), Hartford et al.
patent: 4287565 (1981-09-01), Haubner et al.
patent: 4370962 (1983-02-01), Hosaka
patent: 4386427 (1983-05-01), Hosaka
patent: 4414949 (1983-11-01), Honig et al.

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