Check valve for engine fuel delivery systems

Details Check valve for engine fuel delivery systems Check valve for engine fuel delivery systems

1989-05-30

1990-10-23

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

123467, 137542, F02M 3900

Patent

active

049643916

ABSTRACT:
In a fuel delivery system that includes a pump for supplying fuel under pressure from a supply to an internal combustion engine, a check valve is positioned between the pump and the engine for preventing back-flow of fuel from the engine to the pump. The valve has a flow passage with a central axis and a valve seat orientated away from the pump. A valve element is positioned within the passage for axial motion against a coil spring as a function of fuel pressure from the pump. The coil spring is captured in compression between the valve element and a guide positioned downstream of the valve element within the flow passage. A stem that extends axially from the valve element is slidably disposed in a central bore in the guide. An orifice couples the bore to the fluid flow passage. The guide and valve stem thereby not only restrain lateral motion of the valve element within the passage, but also form a piston/cylinder construction that cooperates with the orifice to dampen axial motion of the valve element. Thus, axial and lateral motions of the valve element are stabilized, greatly reducing the vibrational signature of the pump and check valve system, and reducing pressure pulses delivered from the pump to the engine.

REFERENCES:
patent: 620936 (1899-03-01), Kunzer
patent: 2524951 (1950-10-01), Ashton
patent: 2593522 (1952-04-01), Barnes
patent: 2845945 (1958-08-01), Mancusi
patent: 2909192 (1959-10-01), Dobrick
patent: 2964029 (1960-12-01), Tirloni
patent: 2973008 (1961-02-01), Klose
patent: 3742926 (1973-07-01), Kemp
patent: 4336824 (1982-06-01), Steneman
patent: 4665881 (1987-05-01), Wade
patent: 4757795 (1988-07-01), Kelly

Affiliated with

Also associated with

Rating

Check valve for engine fuel delivery systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve for engine fuel delivery systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve for engine fuel delivery systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-759727