Intake duct

Details Intake duct Intake duct

1990-11-30

1992-08-18

Cross, E. Rollins

Internal-combustion engines

Valve

Valve head cooperates with manifold

123 52M, 123308, 123432, F02B 2700, F02B 2902

Patent

active

051389886

ABSTRACT:
An intake duct in a cylinder head of an internal-combustion engine has a defined flow profile by which the flow rate of the gas flow is accelerated continuously, specifically up to a first intake duct segment of the intake duct which, as viewed in the flow direction, is situated in front of the valve stem. Subsequently, in a second intake duct segment, the flow rate of the gas flow is reduced continuously, whereby a lower approach flow rate of the valve is achieved. This results in an optimized volumetric efficiency which has a favorable influence on the performance and consumption of the internal-combustion engine.

REFERENCES:
patent: 2958313 (1960-11-01), Kincaid
patent: 3270733 (1966-09-01), Steidler
patent: 4174686 (1979-11-01), Shimizu et al.
patent: 4359997 (1982-11-01), Lyssy
patent: 4550699 (1985-11-01), Okumura et al.
patent: 4702207 (1987-10-01), Hatumura et al.
patent: 5050566 (1991-09-01), Distelrath et al.
Information of the Institute for Combustion Engines and Thermodynamics, vol. 31b, Illustrated Part, 1982, two pages Suzuke GSX 250 E.
DE-FZ, MTZ, 45 (1984) 10, pp. 415, 416, 417, Illustration 2.

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