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Patent Searching and Data


Title:
DEVICE FOR CONTROLLING THROTTLE VALVE
Document Type and Number:
WIPO Patent Application WO/2003/014554
Kind Code:
A1
Abstract:
A device for controlling a throttle valve the cost of which is lowered by dispensing with a position sensor of the throttle valve, which is excellent in durability, and reliability and which is reduced in its control delay. The control device comprises an air flow−rate sensor (1) for measuring the flow rate of the air flowing through the intake pipe of an engine, a motor (33) for driving a throttle valve (2) arranged in the intake pipe, and an ECU (15) for controlling the drive of the motor. The ECU (15) feedback−controls the output of the air flow−rate sensor to reduce the difference between the output of the air flow sensor (1) and the air flow−rate rate required for the engine.

Inventors:
Hoshino, Masatoshi (Hitachi Ltd, Hitachi Research Laboratory, 1-1, Ohmikacho 7-chom, Hitachi-shi Ibaraki, 319-1292, JP)
Oosuga, Minoru (Hitachi, Ltd Hitachi Research Laboratory, 1-1, Ohmikacho 7-chom, Hitachi-shi Ibaraki, 319-1292, JP)
Application Number:
PCT/JP2001/006811
Publication Date:
February 20, 2003
Filing Date:
August 08, 2001
Export Citation:
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Assignee:
HITACHI, LTD. (6 Kanda Surugadai 4-chome, Chiyoda-ku, Tokyo, 101-8010, JP)
Hoshino, Masatoshi (Hitachi Ltd, Hitachi Research Laboratory, 1-1, Ohmikacho 7-chom, Hitachi-shi Ibaraki, 319-1292, JP)
Oosuga, Minoru (Hitachi, Ltd Hitachi Research Laboratory, 1-1, Ohmikacho 7-chom, Hitachi-shi Ibaraki, 319-1292, JP)
International Classes:
F02D35/00; F02D41/00; F02D41/18; F02D11/10; (IPC1-7): F02D41/14; F02D9/02
Foreign References:
JP2001164975A
JP2001082182A
JP2000130229A
Attorney, Agent or Firm:
Kasuga, Yuzuru (7F. Kyodo Building-Shinkodenmacho, 1-3 Nihonbashi-Kodenmach, Chuo-ku Tokyo, 103-0001, JP)
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