Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1980-12-11
1982-05-04
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123493, 123492, F02M 5100
Patent
active
043276822
ABSTRACT:
A fuel supply system for an internal combustion engine which includes sensors that signal the condition of engine braking (negative output torque) and which shut off fuel during such a condition. According to the invention, there is provided a special circuit which recognizes the termination of the fuel shut-off phase during engine braking and which causes excess fuel to be admitted to the engine just after the resumption of fuel supply after engine braking. The excess fuel is supplied in order to overcome fuel starvation due to condensation of fuel on induction tube walls which had cooled off during overrunning. The special fuel boost circuit receives information related to the air temperature and the air flow rate in the induction tube and uses it to adjust the time constant of a multivibrator which controls the amount of fuel added.
REFERENCES:
patent: 2868182 (1959-01-01), Cornelius
patent: 2879756 (1959-03-01), Cornelius
patent: 3690305 (1972-09-01), Shimada et al.
patent: 3703162 (1972-11-01), Dono
patent: 3742920 (1973-07-01), Black
patent: 3835825 (1974-09-01), Baxendale et al.
patent: 4094274 (1978-06-01), Harada et al.
Greigg Edwin E.
Nelli Raymond A.
Nippondenso Co. Ltd.
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