Exhaust gas check valve

Details Exhaust gas check valve Exhaust gas check valve

2011-04-05

2011-04-05

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S568180

Reexamination Certificate

active

07918217

ABSTRACT:
Exhaust gas check valve with a movable valve element held by a plurality of return springs, an exhaust gas through-opening closable by the valve element, and a stop element delimiting the stroke of the valve element; in order to improve the service life of the check valve, damping means are provided in the check valve for bringing about a comparatively gentle breaking of the valve element when at the end of its stroke it approaches that position in which the check valve is fully open, the damping means comprising spring elements holding the stop element, and/or a gas space which, when the check valve is open, is defined and at least almost closed by the valve element and the stop element.

REFERENCES:
patent: 2008/0190404 (2008-08-01), Weisz
patent: 198 30 230 (1999-10-01), None
patent: 199 53 198 (2001-05-01), None
patent: 10 2005 020 482 (2006-11-01), None

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