Title:
多気筒エンジン
Document Type and Number:
Japanese Patent JP5007825
Kind Code:
B2
Abstract:
In some cylinder deactivation modes (e.g. virtual V-four operation mode in which two cylinders of a V-six engine are deactivated), ignition/combustion may take place in operating cylinders at uneven intervals. In this case, the output torque varies between the immediately subsequent operating cylinders after the deactivated cylinders in the firing order and the other operating cylinders. A multicylinder engine includes an ignition timing adjustment unit. When the ignition takes place in the operating cylinders at uneven intervals during cylinder deactivation, the ignition timing adjustment unit adjusts ignition timing in each of the operating cylinders to smooth the output torque of the operating cylinders.
Inventors:
Tomohiro Shinagawa
Yohei Hosokawa
Yohei Hosokawa
Application Number:
JP2008077900A
Publication Date:
August 22, 2012
Filing Date:
March 25, 2008
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02P5/15; F02D17/02; F02D41/02; F02D41/04; F02D43/00; F02D45/00
Domestic Patent References:
| JP2001041084A | ||||
| JP2007015653A | ||||
| JP2007162606A | ||||
| JP2006249998A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
Seiichi Tanabe
Seiichi Tanabe