Method and apparatus for controlling the operation of an interna

Details Method and apparatus for controlling the operation of an interna Method and apparatus for controlling the operation of an interna

1977-07-07

1979-07-17

Cox, Ronald B.

Internal-combustion engines

Noncompression

123119R, F02B 300

Patent

active

041611624

ABSTRACT:
An electronic control circuit for operating an internal combustion engine near its lean running limit includes means for measuring the scattering bandwidth of the cyclic fluctuations of the combustion chamber pressure. This measurement is made indirectly by measuring the angular speed a rotating engine member, e.g., the crankshaft, and by forming and storing an appropriate analog signal. Circuitry is provided which supplies a nominal value of the scattering bandwidth which is compared electrically with the measured actual value. An appropriately processed difference signal is fed to a fuel injection controller which changes the fuel-air mixture to the desired ratio.

REFERENCES:
patent: 2655036 (1953-10-01), Chapman
patent: 3508254 (1970-04-01), Ross
patent: 3583225 (1971-06-01), Wing
patent: 3789816 (1974-02-01), Taplin
patent: 3800599 (1974-04-01), Goran
patent: 3872846 (1975-03-01), Taplin
patent: 3901086 (1975-08-01), Griffiths

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