Fuel injection controlling method for an internal combustion engine

Patent · Tue Feb 09 04:00:00 EST 1988

OSTI ID:5331566

Atago, T; Nagano, M; Sakamoto, M

A fuel injection controlling method for an internal combustion engine is described comprising the steps of: controlling a duration of opening of a fuel injector valve in accordance with a prestored control program based on various engine operational parameters including air intake volume, the number of revolutions, and the temperature of the engine; measuring the air intake volume of the engine; generating a throttle-closed position signal using an idle switch for indicating a closed state of a throttle valve adapted to control the intake air amount; generating a basic fuel injector valve opening pulse for causing a fuel injector to inject fuel during the operation of the engine; and generating an increment fuel injector valve opening pulse for injecting a fuel increment independent of the basic fuel injector valve opening pulse during acceleration of the engine, wherein the increment fuel injector valve opening pulse has an opening duration which is dependent upon predetermined operating conditions of the engine detected from variations in the air intake volume per unit time and the value of the throttle-closed position signal which occur prior to acceleration.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4723524
• OSTI ID: 5331566
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AIR FLOW
COMPUTER CODES
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PULSES
VALVES