Fuel supply control system for engine

Internal-combustion engines – Charge forming device – With fuel pump

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C123S516000, C417S395000

Reexamination Certificate

active

06973922

ABSTRACT:
A composite control valve is constructed by a valve housing, first and second diaphragms mounted to the valve housing and disposed to be opposed to each other, a negative pressure working chamber defined between the first and second diaphragms to communicate with a negative pressure generating section in an engine, a first control valve adapted to be opened and closed by advancing and returning of the first diaphragm, and a second control valve adapted to be opened and closed by advancing and returning of the second diaphragm. The first control valve is incorporated into an air vent system for a fuel tank, and the second control valve is incorporated into a fuel passage system extending from the fuel tank to a fuel supply section in the engine. Thus, upon stoppage of the operation of the engine, not only the fuel passage system but also the air vent system leading to the upper space in the fuel tank are blocked simultaneously, thereby preventing release of an evaporated fuel generated in the fuel tank to the atmosphere.

REFERENCES:
patent: 2447266 (1948-08-01), Beardsley, Jr.
patent: 3698368 (1972-10-01), Yamamoto
patent: 3765802 (1973-10-01), Leitermann et al.
patent: 4093403 (1978-06-01), Schrimpf et al.
patent: 4153025 (1979-05-01), Thornburgh
patent: 4203401 (1980-05-01), Kingsley et al.
patent: 4228777 (1980-10-01), Haase
patent: 5584278 (1996-12-01), Satoh et al.
patent: 6158972 (2000-12-01), Ruth
patent: 6347614 (2002-02-01), Evers et al.
patent: 2 264 190 (1975-10-01), None
patent: 62-93145 (1987-06-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Fuel supply control system for engine 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 supply control system for engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel supply control system for engine will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3505892

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.