Fuel supply control system for an internal combustion engine

Details Fuel supply control system for an internal combustion engine Fuel supply control system for an internal combustion engine

1984-08-15

1986-02-25

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123559, 123585, F02B 2900, F02M 5100

Patent

active

045721394

ABSTRACT:
An internal combustion engine has a combustion chamber and an air passage leading to the combustion chamber for conducting air to the combustion chamber. A throttle valve is disposed in the air passage for adjusting the rate of air flow into the combustion chamber. A compressor is disposed in the air passage at a point upstream of the throttle valve for compressing the air. A flow meter is disposed in the air passage at a point upstream of the compressor for sensing the rate of air flow through the air passage. Fuel is injected into the air passage at a point downstream of the throttle valve. The rate of fuel injection normally has a preset relationship with the sensed air flow rate. When the throttle valve is closed, the fuel injection rate is limited to no more than a predetermined level regardless of the preset relationship between the fuel injection rate and the sensed air flow rate. In the case of periodic fuel injection at a frequency proportional to engine speed, the amount of fuel injected during each fuel injection stroke may be limited to a predetermined level when the throttle valve is closed.

REFERENCES:
patent: 4445336 (1984-05-01), Inoue
patent: 4450814 (1984-05-01), Sawamoto et al.
patent: 4470394 (1984-09-01), Tadokoro et al.
patent: 4471742 (1984-09-01), Kishi
patent: 4473052 (1984-09-01), Kamiyama et al.
patent: 4492203 (1985-01-01), Yutaka
patent: 4498443 (1985-02-01), Hasegawa et al.
patent: 4512315 (1985-04-01), Tomisawa
patent: 4523570 (1985-01-01), Suzuki et al.

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