Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1978-11-17
1980-10-14
Lazarus, Ira S.
Internal-combustion engines
Charge forming device
Fuel injection system
123455, 123DIG2, 123456, F02M 3900
Patent
active
042275016
ABSTRACT:
A fuel injection apparatus is proposed for mixture-compressing, externally ignited internal combustion engines which provides continuous injection into the intake manifold. An air flow rate member and an arbitrarily actuatable throttle valve are disposed in sequence within the intake manifold, the air flow rate member being moved against a return force in accordance with the quantity of air flowing therethrough and thereby adjusts the movable member of a metering and distribution valve assembly disposed within the fuel supply line for the purpose of apportioning a quantity of fuel which is proportional to the air quantity. The control slide of the metering valve is actuated by means of a spring which moves in a direction to open the metering valve when the engine is being turned off. Branching off from each fuel injection line there is a scavenging line which is controllable by means of a filling valve provided with a movable valve member which opens a connection from the scavenging line to the fuel tank via a throttle point when the engine is turned off. When the engine is started, the movable valve member is displaced, with a delay, against a return force in the closing direction of the filling valve by means of the pressure of the fuel being supplied, so that the connection of the scavenging lines to the fuel tank is interrupted. Thus when the engine is started, all the fuel lines in the apparatus quickly fill with fuel, and smooth starting of the internal combustion engine takes place.
REFERENCES:
patent: 2323525 (1943-07-01), Ebel et al.
patent: 3974809 (1976-08-01), Stumpp et al.
patent: 4079717 (1978-03-01), Shirose
Jaggle Gunther
Knapp Heinrich
Greigg Edwin E.
Lazarus Ira S.
Moy Magdalen
Robert & Bosch GmbH
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