Internal-combustion engine having at least two intake valves per

Details Internal-combustion engine having at least two intake valves per Internal-combustion engine having at least two intake valves per

1987-09-30

1988-08-23

Cross, E. Rollins

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

Air or combustible mixture entering the combustion chamber...

123472, 123493, F02B 1500

Patent

active

047652977

ABSTRACT:
An arrangement for an internal-combustion engine having at least two intake valves for achieving a more abundant course of the torque in the partial-load operation and a high output in the full-load operation, is equipped with separate intake pipes that are dimensioned differently with respect to their length and/or their diameter and separately lead to the intake valves. The shorter intake pipe is closable by a flap. Each intake pipe is equipped with a separate fuel injection valve. A total fuel quantity that is determined by an injection control computer, during the opening and closing of the flap, corresponding to the flow conditions that change in the intake pipes, is apportioned to the two intake pipes via the injection valves. As a result, in addition to the favorable operating behavior of the internal-combustion engine, in the whole torque and load range, an optimal apportioning and formation of the mixture is achieved, even during the opening and closing of the flap.

REFERENCES:
patent: 4548175 (1985-10-01), Kawai et al.
patent: 4614174 (1986-09-01), Tanigawa et al.
patent: 4641620 (1987-02-01), Yoshimura et al.

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