Title:
IDLING SPEED CONTROLLER OF INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE CONTROLLER AND INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2004/088111
Kind Code:
A1
Abstract:
An idle speed controller of an internal combustion engine comprising an intake passage (8) for sucking air being fed to the combustion chamber of the internal combustion engine (1), a throttle valve (11) disposed in the intake passage (8) and controlling the volume of intake air, an auxiliary intake passage (12) allowing communication between the intake passage on the upstream side of the throttle valve (11) and the intake passage on the downstream side, and an opening/closing control valve (13) disposed in the auxiliary intake passage (12) and controlling the volume of idle intake air. Stabilized idle operation is ensured by providing a means S1 for detecting the intake pressure of the intake passage (8), a fuel supply means for controlling fuel supply to the combustion chamber at least based on the intake pressure, and a control means (15) for synchronizing a drive reference position where the control valve (13) is driven to be opened/closed with the intake pressure detection timing of the intake pressure detecting means S1.
Inventors:
Mine, Yasutaka c/o Yamaha Hatsudoki Kabushiki (Kaisha 2500, Shinga, Iwata-shi Shizuoka, 438-8501, JP)
Application Number:
PCT/JP2004/004429
Publication Date:
October 14, 2004
Filing Date:
March 29, 2004
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA (2500, Shingai Iwata-shi, Shizuoka, 438-8501, JP)
Mine, Yasutaka c/o Yamaha Hatsudoki Kabushiki (Kaisha 2500, Shinga, Iwata-shi Shizuoka, 438-8501, JP)
Mine, Yasutaka c/o Yamaha Hatsudoki Kabushiki (Kaisha 2500, Shinga, Iwata-shi Shizuoka, 438-8501, JP)
International Classes:
F02D31/00; F02D41/32; (IPC1-7): F02D41/08
Attorney, Agent or Firm:
Naito, Teruo (Shin-ei Patent Office, 12th Floor ARK Mori Building, 12-32, Akasaka 1-chom, Minato-ku Tokyo, 107-6012, JP)