Fuel injection device for engine with supercharger and method fo

Details Fuel injection device for engine with supercharger and method fo Fuel injection device for engine with supercharger and method fo

1998-04-15

1999-12-07

Kwon, John

Internal-combustion engines

Engine speed regulator

Idle speed control

123305, 12333916, F02M 300

Patent

active

059965525

ABSTRACT:
In an engine, which has a supercharger and which rotates a generator running at high-idle speed, the rotational speed of the supercharger is accelerated in advance before performing a fuel supply so as to prevent a sudden reduction in the rotational speed due to a suddenly increased load during starting and operating time. A fuel injection device (1), which injects a specified quantity of fuel into an engine cylinder at a specified fuel injection timing and discharges exhaust gas at a specified temperature when the engine is running at unloaded high-idle speed, includes an actuator (14) connected to an injector (13) for controlling fuel injection, a load sensor such as an engine speed sensor (41), and a controller (44) which signals the actuator to cause the actual fuel injection timing to be behind the specified fuel injection timing, hence increasing the exhaust gas temperature at the high-idle-running to be higher than the specified exhaust gas temperature. When the high-idle speed at the time of loading becomes lower than a specified threshold or the loading becomes more than a specified threshold, the controller signals the actuator to cause the actual fuel injection timing to be equal to or ahead of the specified fuel injection timing and to maximize the fuel injection.

REFERENCES:
patent: 4721083 (1988-01-01), Hosaka
patent: 5730105 (1998-03-01), McGinnity
patent: 5735241 (1998-04-01), Matsuura
patent: 5749334 (1998-05-01), Oda et al.
patent: 5797367 (1998-08-01), Iida et al.
patent: 5878711 (1999-03-01), Kamura et al.
patent: 5878713 (1999-03-01), Kadota

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