Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1979-07-20
1981-11-17
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel injection system
123319, 123337, 123376, 123318, 123389, 123391, 123311, 261 65, F02M 908
Patent
active
043005063
ABSTRACT:
A fuel supply system for supplying fuel and for satisfactorily preparing the fuel-air mixture fed to a mixture-compressing, spark-ignited internal combustion engine which comprises an arbitrarily operable throttle element arranged in the air intake manifold wherein fuel can be supplied upstream of this throttle element. The throttle element is mounted on a rocking lever connected to a bearing shaft arranged outside of the air flow at the air intake manifold and is displaceable in the opening direction during full load and at higher speeds against the force of a compensating spring until the throttle element comes into contact, with a full-load stop, with the rocking lever. During full load and at low speeds, the compensating spring displaces the throttle element in the closing direction so that a rather large pressure drop occurs at the throttle element so that an improved conditioning of the injected fuel is obtained. A resilient member, engaging via a compensating lever on the bearing shaft, serves to compensate for the opening moment effective at the throttle element due to the air pressure drop. The resilient member is under the effect, on the one hand, of the air pressure in the air intake manifold section downstream of the throttle element and, on the other hand, of the atmospheric pressure or the air pressure upstream of the throttle element with a resetting spring effective on the throttle element.
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Knapp Heinrich
Rehmann Wolfgang
Greigg Edwin E.
Myhre Charles J.
Nelli R. A.
Robert & Bosch GmbH
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