Title:
【発明の名称】内燃機関用電子制御式スロットルバルブ
Document Type and Number:
Japanese Patent JP2690977
Kind Code:
B2
Abstract:
An electronically controlled type throttle valve for an internal combustion engine is arranged within a suction passage of the engine. An opening degree of the throttle valve is controlled in response to a running condition of the engine to be controlled or an amount of depression of an accelerator pedal, thereby controlling an amount of suction air. The throttle valve comprises a stationary section and a movable section. The stationary section is fixedly arranged within a suction passage in concentric relation thereto, and is composed of a tubular member whose one end is closed. A gas flow passage is defined between a peripheral wall of the stationary section and the suction passage. The peripheral wall is formed with at least one pair of openings. The movable section is fitted in the stationary section in concentric relation thereto for sliding movement relative to the stationary section. The movable section has a peripheral wall provided with openings corresponding respectively to the openings formed in the peripheral wall of the stationary section. A motor is arranged to impart rotative driving force to the movable section. The suction passage is controlled in area by a rotational position of the movable section relative to the stationary section, thereby controlling the amount of suction air.
Inventors:
Minowa Toshimichi
Yoshiyama Oyama
Yoshiyama Oyama
Application Number:
JP29002388A
Publication Date:
December 17, 1997
Filing Date:
November 18, 1988
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F01L5/04; F01L7/02; F02D9/16; F02D11/10; F02D35/00; F02D41/18; F16K5/06; F02B1/04; (IPC1-7): F02D9/16; F01L5/04; F01L7/02; F02D11/10; F16K5/06
Domestic Patent References:
| JP59144891A |
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)