U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Liquified petroleum gas fuel supply system

Patent 5291869 Issued on March 8, 1994. Estimated Expiration Date: Icon_subject May 28, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1860063

1966223

2264914

2286658

2886014

3398895

3451627

Two phase nozzle cooling system
Patent #: 3945353
Issued on: 03/23/1976
Inventor: Dreisin

Alternative liquid fuel injection system and method
Patent #: 4421087
Issued on: 12/20/1983
Inventor: Schuurman

Method for supplying an internal combustion engine with fuel and a fuel supply system for performing the method
Patent #: 4489700
Issued on: 12/25/1984
Inventor: van der Weide

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Inventor

Application

No. 069199 filed on 05/28/1993

US Classes:

123/527, Gaseous fuel and air mixer123/41.31, With cooling of additional parts or materials123/541Fuel only

Examiners

Primary: Miller, Carl S.

Attorney, Agent or Firm

Foreign Patent References

  • WO81/00282 WO. 02/13/1981
  • WO92/08886 WO. 05/13/1992
  • WO92/08888 WO. 05/13/1992

International Classes

F02B 043/00
F02M 015/00

Abstract

A fuel supply system for providing liquified petroleum gas ("LPG") fuel in a liquid state to intake manifold of internal combustion engine, including a fuel supply assembly and a fuel injecting mechanism. Fuel supply assembly includes a fuel rail assembly containing both supply and return channels. Fuel injecting mechanism is in fluid communication with supply and return channels of fuel rail assembly. Injected LPG is maintained liquid through refrigeration both along fuel rail assembly and within fuel injecting mechanism. Return fuel in both fuel rail assembly and fuel injecting mechanism is used to effectively cool supply fuel to a liquid state prior to injection into intake manifold of engine.

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