Automatic control apparatus for engine throttle valve

Patent · Tue Apr 05 04:00:00 EDT 1988

OSTI ID:5004966

Ejiri, Y; Ito, T

An automatic control apparatus for an engine throttle valve is described, consisting of a throttle valve and a motor for driving the throttle valve. The improvement comprises means for opening the throttle valve forcedly from a full-close position at the time of engine shutdown so as not to allow a tar component in the fuel for driving the engine to stick on the throttle valve at an outer peripheral portion. The situation on whether or not the engine is shut down is detected according to rotations of an engine output shaft, thereby driving the means for opening the valve forcedly.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4735179
• OSTI ID: 5004966
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ANGULAR VELOCITY
AUTOMATION
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ELECTRIC MOTORS
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MOTORS
OPERATION
VALVES
VELOCITY