Idle speed control apparatus for internal combustion engine

Patent · Tue Jan 27 00:00:00 EST 1987

OSTI ID:7050527

Kamei, E; Namba, H

This patent describes an apparatus for controlling an internal combustion engine equipped with one or more fuel injection valves, comprising: (a) a throttle actuator for adjusting opening degree of a throttle valve disposed in an intake pipe of the engine; (b) engine speed detecting means for producing a first signal indicative of the rotational speed of the engine; (c) intake air quantity detecting means for producing a second signal indicative of the intake air quantity sucked by the engine; and (d) an electronic control means responsive to the first and second signals for producing and supplying fuel injection valve drive signals to the fuel injection valves and for producing and supplying throttle actuator drive signal to the throttle actuator. The electronic control means has a target idle speed setting unit, the electronic control means also having: (i) a target intake air quantity setting unit for determining a target intake air quantity corresponding to minimum fuel amount with which the rotational speed of the engine can be maintained at the target idle speed; (ii) an integral-added optimal regulator for determining feedback amounts respectively in connection with the amount of fuel to be injected and the opening degree of the throttle valve in receipt of the target idle speed.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4638778
• OSTI ID: 7050527
• Resource Relation: Patent File Date: Filed date 19 Feb 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
CONTROL SYSTEMS
SPEED REGULATORS
ACTUATORS
AIR FLOW
ELECTRONIC EQUIPMENT
FEEDBACK
FUEL INJECTION SYSTEMS
FUEL-AIR RATIO
INTAKE STRUCTURES
ROTATION
SIGNALS
VALVES
VELOCITY
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
MECHANICAL STRUCTURES
MOTION
330100* - Internal Combustion Engines