Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1997-03-07
1999-02-23
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
123509, 13711527, F02M 3704
Patent
active
058733493
ABSTRACT:
For a fuel injected combustion engine a fuel pressure regulator having a rapidly and accurately regulated output pressure over a wide range of flow rates by bypassing and returning to a fuel tank a portion of the input fuel from a fuel pump through a bypass valve actuated by a flexible diaphragm. The diaphragm is responsive to the pressure of the input fuel on one side of the diaphragm and a vacuum on the other side of the diaphragm having a magnitude which is varied as a function of the flow rate of the fuel bypassed through the valve and returned to the fuel tank. Preferably, this vacuum is produced by a venturi or orifice through which the bypass fuel flows. Applying this vacuum to the diaphragm opposes the bias of a spring acting on the diaphragm and provides an output fuel pressure to the engine over a wide range of flow rates which is essentially constant relative to the atmosphere or, if desired, an output fuel pressure having a positive slope which increases with increasing flow rate of the output fuel supplied to the engine.
REFERENCES:
patent: 5028167 (1991-07-01), Brandt
patent: 5285759 (1994-02-01), Terada
patent: 5435344 (1995-07-01), Robinson
patent: 5509444 (1996-04-01), Robinson
patent: 5647328 (1997-07-01), Fournier
patent: 5655504 (1997-08-01), Iwai
Oberheide G. Clarke
Tuckey Charles H.
Miller Carl S.
Walbro Corporation
LandOfFree
Fuel pressure regulator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel pressure regulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel pressure regulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-298927