Vacuum generator in combustion engine

Details Vacuum generator in combustion engine Vacuum generator in combustion engine

2005-10-04

2005-10-04

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S585000, C123S587000

Reexamination Certificate

active

06951199

ABSTRACT:
A vacuum generator is provided wherein the intake vacuum of a combustion engine is led to a negative pressure device such as a vacuum booster of a brake booster device through a check valve. An idling air passage is connected to a suction pipe of the combustion engine to bypass a throttle valve arranged in the suction pipe. An ejector is arranged in the idling air passage at the downstream of an idle speed control valve in serial relation to the same, and the intake for idling is performed through the ejector. As the intake air flow passing through the idling air passage increases, the intake negative pressure which is generated at a vacuum takeout port of the ejector is further increased in absolute value, whereby the negative pressure device has a negative pressure which is further increased in absolute value.

REFERENCES:
patent: 4510904 (1985-04-01), Casey
patent: 4783962 (1988-11-01), Grein
patent: 4899708 (1990-02-01), Jung
patent: 5950595 (1999-09-01), Yoshioka et al.
patent: 6321716 (2001-11-01), Mashiki et al.
patent: 6694948 (2004-02-01), Glugla et al.
patent: 0 724 996 (1996-08-01), None
patent: 2002-371885 (2002-12-01), None

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