Membrane fuel pump for a membrane carburetor

Details Membrane fuel pump for a membrane carburetor Membrane fuel pump for a membrane carburetor

1993-02-05

1993-11-09

Cross, E. Rollins

Internal-combustion engines

Charge forming device

With fuel pump

123 73C, 417380, 417395, F02B 3304, F04B 4302, F02M 1704

Patent

active

052593525

ABSTRACT:
The invention is directed to a membrane fuel pump for a membrane carburetor of an internal combustion engine. The carburetor has a pressure controller and the engine has a crankcase wherein pressure fluctuates during the operation thereof. The membrane fuel pump includes a pump membrane mounted in a housing which partitions a space of the housing into a pump chamber for receiving fuel from a fuel supply connection and a drive chamber. The drive chamber is charged with the pressure of the crankcase. A pressure connection connects the pump chamber to the pressure controller of the membrane carburetor. A bypass channel connects the pressure connection to the fuel supply connection and a valve is interposed between the pressure connection and the bypass channel. This valve is responsive to the pressure present in the pressure connection for switching the valve between a first position wherein the bypass channel is open to the pressure connection and a second position wherein the bypass channel is closed to the pressure connection.

REFERENCES:
patent: 4430048 (1984-02-01), Fritsch
patent: 4473340 (1984-09-01), Walsworth
patent: 4813391 (1989-03-01), Geyer et al.
patent: 4928390 (1990-05-01), Gassen et al.
patent: 4932370 (1990-06-01), Schierling et al.
patent: 4976246 (1990-12-01), Schierling et al.

Affiliated with

Also associated with

Rating

Membrane fuel pump for a membrane carburetor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Membrane fuel pump for a membrane carburetor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membrane fuel pump for a membrane carburetor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1136199