Fuel injection timing control system for internal combustion engine and control method therefor

Patent · Tue Jan 07 04:00:00 EST 1986

OSTI ID:6068927

Ito, T

This patent describes a fuel injection control system for a multi-cylinder fuel injection internal combustion engine having an intake and exhaust port for each cylinder and a fuel injection valve located adjacent to the intake port and directed towards the intake port, and an intake and exhaust valve for opening and closing the intake and exhaust ports of each cylinder, and a crank shaft. The control system consists of: a first means for detecting engine load and for producing a signal indicative of the engine load; a second means for detecting angular position of crank shaft and for producing a second signal each time the shaft passes a predetermined angular position; a third means for operating intake and exhaust valves in synchronism with crank shaft angular position with a valve overlap period during which both valves are open; a fourth means for determining fuel injection amount based on the first signal and for producing a control signal for controlling fuel injection valves of each cylinder to inject the fuel injection amount, and to determine timing of the control signal based on second signal to effect fuel injection during valve overlap period, or before based on engine load (first signal).

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4562817
• OSTI ID: 6068927
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
CONTROL SYSTEMS
CYLINDERS
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
POSITIONING
SIGNALS
TIME MEASUREMENT
VALVES