Intake port

Details Intake port Intake port

2005-02-01

2005-02-01

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Intake manifold

C123S308000

Reexamination Certificate

active

06848408

ABSTRACT:
The volumetric efficiency and power of internal combustion engines is improved with an intake port having an intake nozzle, a venturi, and a surge chamber. The venturi is located almost halfway upstream the intake port between the intake valves and the intake plenum enabling the venturi throat diameter to be exceptionally small for providing an exceptionally high ram velocity and an exceptionally long and in turn high efficiency diffuser flowing into the surge chamber. The intake port includes an exceptionally large surge chamber volume for blow down of the intake air into the working cylinder of the engine.

REFERENCES:
patent: 4271795 (1981-06-01), Nakagawa et al.
patent: 4742804 (1988-05-01), Suzuki et al.
patent: 4852526 (1989-08-01), Brown
patent: 5119794 (1992-06-01), Kushida et al.
patent: 5255649 (1993-10-01), Isaka
Spoon Sports catalog, p. 14: Spoon Co., Ltd. 1-25-12 Shimotakaido Suginami_Ku Tokyo, Japan.
Blaxill, Hugh, et al.; A Parametric Approach to Spark-Ignition Engine Inlet-Port Design, SAE Technical paper no. 1999-01-0555.
Endres, H. et al.; Influence of Swirl and Tumble on Economy and Emissions, SAE paper No. 920516, Feb. 1992.

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