Method and apparatus for controlling an internal combustion engi

Details Method and apparatus for controlling an internal combustion engi Method and apparatus for controlling an internal combustion engi

1976-02-19

1977-12-27

Feinberg, Samuel

Internal-combustion engines

Noncompression

123117D, F02B 304

Patent

active

040648460

ABSTRACT:
A control apparatus for an internal combustion engine performs cyclic modulations of an operational parameter of the engine, for example by periodic leaning out of the fuel-air mixture to some of the engine's cylinders. The resulting changes in angular acceleration of the crankshaft are sensed by an electro-inductive transducer and the elapsed time between successive pulses so generated is measured. Depending on whether the change in acceleration is positive or negative, the circuit generates an appropriate control signal which may be used to steer a final control element which moves the center of modulation, i.e., the operational point of the engine, toward an optimum value of, for example, the fuel-air ratio.

REFERENCES:
patent: 3430616 (1969-03-01), Glockler et al.
patent: 3757750 (1973-09-01), Ohtani
patent: 3900013 (1975-08-01), Vignozzi et al.
patent: 3991726 (1976-11-01), Kawai et al.

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