Idling speed control system of an internal combustion engine

Patent · Tue Sep 16 00:00:00 EDT 1986

OSTI ID:5285270

Miyazaki, M; Ishii, M; Kako, H; Nakamura, N; Kakinuma, H

This patent describes an idling speed control system of an internal combustion engine comprising: a valve device which controls the amount of intake air for the engine; an actuator which includes an electric motor for variably controlling the opening of the value device; rotation speed detector means for detecting the rotation speed of the engine; idling condition detector means for detecting the idling condition of the engine; feedback control means responsive to the detected output of the idling condition detector means for generating feedback control pulses to intermittently drive the electric motor so that the detected rotation speed of the engine under the idling condition may converge into a target idling rotation speed; and control means responsive to the output of detector means that detects an abnormally low rotation speed of the engine detected by the rotation speed detector means for generating control pulses that do not overlap the feedback control pulses to drive the electric motor in a predetermined direction.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4611560
• OSTI ID: 5285270
• Resource Relation: Patent File Date: Filed date 07 Apr 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
CONTROL SYSTEMS
SPEED REGULATORS
ACTUATORS
AIR FLOW
ELECTRIC MOTORS
FEEDBACK
FUEL-AIR RATIO
PULSES
ROTATION
VALVES
VELOCITY
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
MOTION
MOTORS
330100* - Internal Combustion Engines