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

Fuel injection apparatus for vehicles

Patent 5237981 Issued on August 24, 1993. Estimated Expiration Date: Icon_subject February 21, 2012. 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

525459

Direct liquid injection of liquid petroleum gas
Patent #: 4430978
Issued on: 02/14/1984
Inventor: Lewis ,   et al.

Gaseous hydrocarbon fuel storage system and power plant for vehicles
Patent #: 4523548
Issued on: 06/18/1985
Inventor: Engel ,   et al.

Air/fuel induction system for a multi-cylinder internal combustion engine
Patent #: 4545345
Issued on: 10/08/1985
Inventor: Pagdin ,   et al.

Regulation for a gas engine
Patent #: 4843558
Issued on: 06/27/1989
Inventor: Bergmann ,   et al.

Gas injection system
Patent #: 5025758
Issued on: 06/25/1991
Inventor: Djurdjevic

Liquid butane fuel injection for internal combustion engines
Patent #: 5033444
Issued on: 07/23/1991
Inventor: Kaufman, et al.

Fuel injector Patent #: 5076244
Issued on: 12/31/1991
Inventor: Donaldson

Inventors

Assignee

Application

No. 839959 filed on 02/21/1992

US Classes:

123/527, Gaseous fuel and air mixer220/686Exterior circumferential clamping band

Examiners

Primary: Wolfe, Willis R.
Assistant: Solis, Erick

Attorney, Agent or Firm

Foreign Patent References

  • 0005407 JP 01/12/1980
  • 0252860 JP 11/12/1986
  • 0259275 JP 10/12/1990

International Classes

F02M 021/04
F02B 043/00

Abstract

A fuel injection apparatus for a vehicle includes a throttle body having an air flow passage extending therethrough with a throttle plate mounted in the passage. At least one fuel injector is mounted below the throttle plate and above the intake manifold of the engine for cyclically injecting fuel into the air flow passage extending between the throttle body and the inlet of the intake manifold. A full time, closed loop feedback control system monitors exhaust gas content and adjusts the fuel flow based on the measured air/fuel ratio. A tank storing gaseous fuel at a high pressure is connected to the fuel injector via fluid flow conduits. An annular recess is formed on at least one location on the side wall of the tank. Annular shoulders are disposed on opposite sides of the recess and extend outward above the side wall of the tank. A mounting bracket is mounted in the recess surrounding the tank and is attachable to the vehicle to mount the tank to the vehicle. A fuel fill door sensor closes the fuel delivery path during refueling.

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