Intake device of multi-cylinder engine

Details Intake device of multi-cylinder engine Intake device of multi-cylinder engine

2006-12-19

2006-12-19

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Intake manifold

For engine having radiating cylinders

C123S054400

Reexamination Certificate

active

07150256

ABSTRACT:
Air is aspirated by cylinders of cylinder rows (11, 12) via branch pipes (23,24) from two intake collectors (21,22) of a V type multi-cylinder internal combustion engine. An auxiliary chamber (31, 32) is formed using the space between adjacent branch pipes (23,24). A communication port (25, 26) to the intake collector (21,22) of the auxiliary chamber (31,32) is formed between the openings (23A,24A) to the intake collector (21,22) of two adjacent branch pipes (23,24). Since the effective volume of the intake collector (21,22) increases due to the auxiliary chamber (31,32), residual resonance in the intake collector (21, 22) decreases. The auxiliary chamber (31,32) increases an intake inertia effect by increasing the flow rate of the branch pipes (23,24) in the second half of the intake stroke relative to the flow rate in the first half of the intake stroke. Engine volume efficiency is thereby improved using a limited space.

REFERENCES:
patent: 61-049160 (1986-03-01), None
patent: 08061069 (1996-03-01), None

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