Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ENGINE CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2003/046372
Kind Code:
A1
Abstract:
Unstable idling immediately after engine start is stabilized. At the time of idling according to cooling water temperature, the difference between the target engine rpm and the actual engine rpm is integrated, and a value obtained by multiplying the engine rpm difference integration value by a gain is used as an ignition timing change quantity for a change to the leading angle side or lagging angle side. Immediately after engine start, a relatively large initial gain is used to achieve a quick increase in the engine rpm. When the engine rpm approaches the target engine rpm, a normal gain, which is smaller than that, is used&semi however, for a change in setting to the same side as the leading angle side or lagging angle side, a smaller leading angle side gain or lagging angle side gain is used to inhibit the setting of a change to the ignition timing on the same side. At the time of throttle off, a quick reduction in the engine rpm is achieved as ignition timing corresponding to cooling water temperature.

Inventors:
SAWADA YUUICHIROU (JP)
HASEGAWA HITOSHI (JP)
TAKAHASHI MICHIYASU (JP)
Application Number:
PCT/JP2002/012603
Publication Date:
June 05, 2003
Filing Date:
December 02, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YAMAHA MOTOR CO LTD (JP)
SAWADA YUUICHIROU (JP)
HASEGAWA HITOSHI (JP)
TAKAHASHI MICHIYASU (JP)
International Classes:
F02D31/00; F02D41/06; F02D41/08; F02D41/18; F02P5/15; F02P9/00; (IPC1-7): F02P5/15
Foreign References:
JP2000170582A2000-06-20
JPH1136960A1999-02-09
JPH04353267A1992-12-08
JPH0363741U1991-06-21
JPH0510192A1993-01-19
JPH07224706A1995-08-22
JPH02161153A1990-06-21
JPS6194291U1986-06-18
JPH0734952A1995-02-03
JPS59136546A1984-08-06
JPH09228885A1997-09-02
JP2000265894A2000-09-26
Other References:
See also references of EP 1450039A4
None
Attorney, Agent or Firm:
Mori, Tetsuya (Yusen Iwamotocho Bldg. 8th Floor 3-3, Iwamoto-cho 2-chom, Chiyoda-ku Tokyo, JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: MOTOR VEHICLE ELECTRIC STARTER EQUIPPED COMPRISING A STARTING MOTOR WITH IMPROVED SPLINES

Next Patent: HIGH-FREQUENCY IGNITION FOR AN INTERNAL COMBUSTION ENGINE