FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINES

• US 3,695,245 A
• Filed: 11/23/1970
• Issued: 10/03/1972
• Est. Priority Date: 11/22/1969
• Status: Expired due to Term

• Current Assignee: Takashi Ishida
• Original Assignee: Takashi Ishida
• Inventors: Ishida, Takashi
• Primary Examiner(s): Goodridge, Laurence M.
• Assistant Examiner(s): Cox, Ronald B.
• Application Number:
  US05/091,618
• Time in Patent Office: 680 Days
• Field of Search: 123/119R,14MC,261,36A,261FL,DIG.69
• US Class Current: 123/444
• CPC Class Codes: F15C 1/002 for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like) control of internal-combustion piston engines F02D; of turbines F01D, F02C; of fans F04D27/00; speedometers G01P

Abstract

A fuel supply system for internal combustion engines comprising an engine rpm function control circuit for controlling fuel flow in conformity with the rpm of the engine, a manifold boosted pressure function control circuit for controlling fuel flow in conformity with the boosted pressure in the manifold, a summing impact modulator for causing fuel controlled by said two circuits to be injected, and a transverse impact modulator for supplying air in amounts such that proper proportions of air and fuel can be obtained in conformity with the boosted pressure.

Claims

1. A fuel supply system for internal combustion engines comprising an engine rpm function control circuit for controlling fuel flow in conformity with the rpm of the engine, a manifold boosted pressure function control circuit for controlling fuel flow in conformity with the boosted pressure in the manifold, a summing impact modulator for causing fuel controlled by said two circuits to be injected, and a transverse impact modulator for supplying air in amounts such that proper proportions of air and fuel can be obtained in conformity with the boosted pressure.

2. A fuel supply system as defined in claim 1 in which said engine rpm function control circuit comprises a governor responding to the rpm of the engine, a pneumatic pressure control valve, a trigger mechanism, one shot circuit, and trigger means.

3. A fuel supply system as defined in claim 1 in which said manifold boosted pressure function control circuit comprises a pneumatic pressure control valve and a fuel flow control valve connected in series with each other.

4. A fuel supply system as defined in claim 1 in which said summing impact modulator has two injection ports and a drain.

5. A fuel supply system for an internal combustion engine having a crankshaft and an intake manifold with a pressure detection aperture, comprising:

an engine rpm function control circuit including a governor responsive to the engine crankshaft, an air pressure control valve responsive to the governor, and a one-shot circuit responsive to air pressure from the air pressure control valve;

a manifold boosted pressure function control circuit including an air pressure control valve responsive to pressure from the detection aperture in the intake manifold, and a fuel flow control valve connected in series with said pressure control valve;

a boosted pressure detection circuit including a proportioning element connected to a line bypassed from the boosted pressure detection circuit and a transverse impact modulator connected to the output side of said proportioning element; and

a summing impact modulator injection element including a fuel injection port and a fuel-air injection port for connecting an output of the one-shot circuit and the boosted pressure detection circuit.