Apparatus for throttle valve control

Patent · Tue Feb 10 04:00:00 EST 1987

OSTI ID:6778656

Murakami, T

An apparatus is described for use with an internal combustion engine having an accelerator pedal and a throttle valve situated within an induction passage for controlling movement of the throttle valve in response to a change in the position of the accelerator pedal, comprising: the induction passage having an auxiliary passage bypassing the throttle valve; a control valve movable within the auxiliary passage for controlling air flow through the auxiliary passage; a signal source for generating an electrical signal indicative of the position of the accelerator pedal; a control circuit operable to determine a value corresponding to a setting of the position of the throttle valve in response to the accelerator pedal position indicative signal; a throttle actuator connected to the control circuit for moving the throttle valve to the determined setting; and the control circuit including means for forcing the throttle actuator to close the throttle valve and moving the control valve to a predetermined open position to permit air flow through the auxiliary passage when a failure occurs in the operation of the control circuit.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4641622
• OSTI ID: 6778656
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACCELERATION
ACTUATORS
AIR FLOW
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
FAILURES
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
POSITIONING
SIGNALS
SPEED REGULATORS
VALVES