Internal combustion engine control system for use with turbo-cha

Details Internal combustion engine control system for use with turbo-cha Internal combustion engine control system for use with turbo-cha

1981-06-05

1983-06-28

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123480, 123417, 60605, G05B 1502, F02D 500, F02B 310, F02D 2104

Patent

active

043899943

ABSTRACT:
To permit operation of engines, particularly turbo-charged engines, at the maximum power level just short of causing engine knocking, and preventing engine knocking, temperatures in the engine are sensed and, if an excessive temperature signal is detected, for example excessive engine temperature, exhaust gas temperature, turbo-charged air, or turbo charger temperature, a fuel supply system, for example a fuel injection system, is controlled to enrich the mixture, for example by multiplying the fuel injection time by a factor as commanded by an additional control stage (26, 27, 30) which stores in a memory, such as a ROM (27), engine operating characteristic curves. In addition, spark retardation by a retarding angle (.alpha.1) can be commanded, the spark retardation in combination with enriching of the fuel-air mixture being less than without such enrichment, thus permitting operation of the engine at appropriate power and efficiency level without noticeably increasing fuel consumption in the course of continued operation of the engine.

REFERENCES:
patent: 3049805 (1962-08-01), Drayer
patent: 4147467 (1979-04-01), Leicht et al.
patent: 4242728 (1980-12-01), Hartford
patent: 4244023 (1981-01-01), Johnson
patent: 4249382 (1981-02-01), Evans et al.
patent: 4250858 (1981-02-01), Jeenicke et al.
patent: 4267569 (1981-05-01), Baumann et al.
patent: 4309759 (1982-01-01), Tokuda et al.
patent: 4310888 (1982-01-01), Furuhashi et al.

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