Electronic throttle control device

Details Electronic throttle control device Electronic throttle control device

2006-10-17

2006-10-17

Huynh, Hai (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S361000, C123S336000, C701S103000, C701S115000

Reexamination Certificate

active

07121258

ABSTRACT:
Intake throttle valves21ato21ddisposed on the intake pipes15ato15dfor each cylinder of a multi-cylinder engine10are provided with motors20ato20dfor controlling valve opening of the intake throttle valves. The microprocessor31controls throttle valve opening in response to a degree of stepping on an accelerator pedal42in cooperation with a program memory32A. The control of valve opening by each motor is sequentially subject to time division processing in the exhaust stroke of each cylinder, and a current valve opening is stored and held by a feedback control circuit section39, 69B,69C in the other strokes, thereby the control burden on the microprocessor being reduced.

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