Title:
【発明の名称】アイドル回転速度制御用制御弁の制御装置
Document Type and Number:
Japanese Patent JPH0623546
Kind Code:
B2
Abstract:
An idle speed control valve is provided in a bypass path of an intake system and has its opening controlled by control pulse signals. The idle speed control valve is designed to increase the opening in proportion to the increase or decrease of the duty ratio of the control pulse signal and completely close the opening at 0% or 100% of the duty ratio. According to this invention, to completely close the idle speed control valve, instead of sending the control pulse signal of 0% or 100% of duty ratio to the idle speed control valve, the transmission of the control pulse signal is interrupted or the idle speed control valve is driven by continuous direct current.
Inventors:
ITO YOSHASU
SUEMATSU TOSHIO
TAKEDA JUJI
ANZAI KATSUSHI
YOSHIDA MATSUHISA
SUEMATSU TOSHIO
TAKEDA JUJI
ANZAI KATSUSHI
YOSHIDA MATSUHISA
Application Number:
JP4220083A
Publication Date:
March 30, 1994
Filing Date:
March 16, 1983
Export Citation:
Assignee:
TOYOTA JIDOSHA KK
NIPPON DENSO KK
NIPPON DENSO KK
International Classes:
F02D41/16; F02B33/44; F02B37/18; F02D31/00; F02D33/00; F02D41/00; F02D41/08; F02M3/07; F02M51/02; (IPC1-7): F02D41/08
Domestic Patent References:
| JP5634936A | ||||
| JP52142182A | ||||
| JP5536988U |
Attorney, Agent or Firm:
Tadahiko Ito (2 outside)
Next Patent: 内燃機関の空燃比制御方法