Throttle valve control system for an internal combustion engine

Patent · Tue Jan 24 04:00:00 EST 1989

OSTI ID:6268886

Ishikawa, Y; Yamaguchi, K

A throttle valve control system is described for controlling the opening of a throttle valve disposed in an air induction system of an internal combustion engine when the throttle valve is in a position other than its idle position, comprising: engine speed detection means for detecting the rotational speed of the internal combustion engine; pressure detection means for detecting the actual pressure in an intake pipe of the air induction system, downstream of the throttle valve; setting means for setting a target pressure in the intake pipe to attain a minimum fuel consumption rate of the internal combustion engine in accordance with the rotational speed detected by the engine speed detection means; and drive means for driving the throttle valve in a direction and by an amount selected to reduce the actual pressure in the intake pipe when the actual pressure in the intake pipe detected by the pressure detection means is higher than the target pressure set by the target pressure setting means and to increase the actual pressure in the intake pipe when the actual pressure detected by the pressure detection means is lower than the target pressure set by the target pressure setting means.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4799467
• OSTI ID: 6268886
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
ANGULAR VELOCITY
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERING
METERS
OPERATION
PRESSURE MEASUREMENT
VALVES
VELOCITY