Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1979-09-04
1981-06-30
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel injection system
F02M 4100
Patent
active
042756944
ABSTRACT:
An electronic controlled fuel injection system for use in an internal combustion engine is disclosed which comprises a Karman's vortex flow sensor for measuring the flow of air supplied to the engine to provide an intake air flow indicative signal, a flow deriving circuit responsive to throttle opening and engine speed measurements for deriving an intake air flow measurement to provide an intake air flow indicative signal, a control circuit for providing an injection pulse signal in synchronism with rotation of the engine, the injection pulse signal having its pulse width determined in accordance with the intake air flow measurement, and a signal selector responsive to engine operating condition for passing the intake air flow indicative signal from the Karman's vortex flow sensor to the control circuit when the engine is under low load conditions and for passing the intake air flow indicative signal from the flow deriving circuit to the control circuit when the engine is under high load conditions.
REFERENCES:
patent: 3956928 (1976-05-01), Barrera
patent: 4121549 (1978-10-01), Martin et al.
patent: 4155332 (1979-05-01), Yaegashi et al.
patent: 4167158 (1979-09-01), Martin et al.
Myhre Charles J.
Nelli R. A.
Nissan Motor Company Limited
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