Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1993-06-25
1994-09-20
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
F02M 2506
Patent
active
053479734
ABSTRACT:
A vacuum relief valve for use with internal combustion engines is provided. The valve is connected to the breathing tubes of an engine on one side and to the air induction system of the engine on the opposite side. Under certain conditions during engine operation, the induction system has a tendency to reduce the pressure within the crankcase creating a partial vacuum. The vacuum relief valve is interposed between the induction system and the crankcase and control or limits the amount of partial vacuum thus created to a maximum of seven inches of vacuum or less. This is accomplished by providing means for limiting the size of a passageway through the valve and thereby limit the amount of suction that can be communicated by the induction system to the crankcase. In one embodiment, a spring biased piston is used to control the size of the passageway. Other valving mechanisms are also contemplated. An auxiliary pathway to atmosphere is also incorporated into the valve so that the breather tubes can be vented when the passageway through the valve is partially or fully closed.
REFERENCES:
patent: 2362558 (1944-11-01), Janzich
patent: 3359960 (1967-12-01), Pittsley
patent: 3678910 (1972-07-01), Marlett
patent: 3709204 (1973-01-01), Noponen
patent: 3766898 (1973-10-01), McMullen
patent: 4245592 (1981-01-01), Atkins
patent: 4667647 (1987-05-01), Ohtaka et al.
patent: 4724807 (1988-02-01), Walker
patent: 4768493 (1988-09-01), Ohtaka et al.
patent: 4856487 (1989-08-01), Furuya
patent: 4904657 (1990-03-01), Betterton et al.
patent: 5140957 (1992-08-01), Walker
Argenbright Tony M.
Macy M.
Walker Design Inc.
LandOfFree
Vacuum relief valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum relief valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum relief valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2428880