Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-08-06
1977-06-14
Cline, William R.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123139R, F02M 3900
Patent
active
040290700
ABSTRACT:
A fuel supply system for use with an internal combustion engine of the type in which the air intake quantity is substantially in proportion to the engine speed and the opening degree of a throttle valve and the fuel to be mixed with the air is injected through a fuel injection nozzle, said fuel supply system comprising pump means which discharges the fuel in proportion to the engine speed, and a fuel shunt device for supplying a part of the fuel supplied from said pump means to said fuel injection nozzle while recirculating the remaining fuel to said pump means, said fuel shunt device having first valve means for automatically controlling the area of the opening of a passage hydraulically connecting said fuel shunt device to said fuel injection nozzle in proportion of the discharge rate of said pump means, and second valve means for automatically controlling the area of the opening of a return line hydraulically connecting said fuel shunt device to said pump means in inverse proportion to the opening degree of said throttle valve, whereby the air-fuel mixture with a substantially constant air-fuel ratio independently of the speed and load of the engine may be charged into the engine.
REFERENCES:
patent: 2502679 (1950-04-01), Stanly
patent: 2869528 (1959-01-01), Tuschel
patent: 3739762 (1973-06-01), Jackson
patent: 3826234 (1974-07-01), Cinguegrani
Cline William R.
Kabushiki Kaisha Toyota Chuo Kenkyusho
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