Method and apparatus for controlling the solenoid current of a solenoid valve which controls the amount of suction of air in an internal combustion engine

Patent · Tue Sep 20 00:00:00 EDT 1988

OSTI ID:6487620

Kiuchi, T; Sakurai, H

This patent describes an apparatus for controlling the solenoid current of a solenoid valve which controls suction air in an internal combustion engine. The apparatus consists of: (a) engine rotational speed detector means for detecting engine rotational speed; (b) aimed idle speed setting means for generating a signal corresponding to a predetermined idling speed; (c) first calculating means coupled to the engine rotational speed detector means and the aimed idle speed setting means for calculating a feedback control term (Ifb(n)) as a function of an integration term (Iai), a proportion term (Ip), and a differentiation term (Id); (d) first determining and storing means coupled to the first calculating means, for determining an integration term (Iai(n)) of the the feedback control term (Ifb(n)) and for determining a determined value (Ixref) in accordance therewith; (e) changeover means coupled to the first calculating means and the first determining and storing means for selecting the output of one of the first calculating means or the first determining and storing means; (f) first signal generating means coupled to the changeover means for generating a solenoid current control value (Icmd) as a function of the output of the changeover means.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4771749
• OSTI ID: 6487620
• Resource Relation: Patent File Date: Filed date 20 Oct 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FUEL SYSTEMS
VALVES
INTERNAL COMBUSTION ENGINES
COMPUTERIZED CONTROL SYSTEMS
AIR FLOW
FEEDBACK
FUEL-AIR RATIO
OPERATION
PULSE GENERATORS
SIGNAL CONDITIONERS
SOLENOIDS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUNCTION GENERATORS
GAS FLOW
HEAT ENGINES
PULSE CIRCUITS
330100* - Internal Combustion Engines
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)