Electronically-controlled system for supplying fuel into cylinder

Patent · Tue Jun 24 04:00:00 EDT 1986

OSTI ID:5461975

Oosuga, M; Nishimura, Y; Oyama, Y

An electronically-controlled cylinder fuel supply system is described for an engine comprising: combustion chambers each of which is provided with a fuel injector and an ignition plug; a suction air path for supplying air into each of the combustion chambers; an exhaust path for discharging an exhaust gas from each of the combustion chambers; sensor means for sensing an operating condition of the engine; first means for determining the amount of fuel to be injected and the time of ignition for discharge of the ignition plug for each combustion chamber on the basis of sensed signals from the sensor means; means for causing the fuel injector of each combustion chamber to inject the amount of fuel determined by the first means directly into the associated combustion chamber within the period of time from initiation of the intake stroke of the combustion chamber to the time of the ignition as determined by the first means for the respective combustion chamber; and second means for determining an air quantity to be drawn into the suction air path on the basis of the sensed signals from the sensor means; wherein the injector comprises a fuel holding portion provided at a fuel injection end of the injector for temporarily holding injected fuel therein and a vibration means for vibrating the fuel holding portion such that the fuel held in the fuel holding portion is atomized and scattered in the combustion chamber in the atomized state.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4596220
• OSTI ID: 5461975
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
ATOMIZATION
COMBUSTION CHAMBERS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
CYLINDERS
ENGINES
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MECHANICAL VIBRATIONS
SIGNALS
TIME MEASUREMENT
WASTES