Title:
LEAN-BURN ENGINE
Document Type and Number:
WIPO Patent Application WO/2016/120926
Kind Code:
A1
Abstract:
In a lean-burn engine equipped with a turbocharger, a responsiveness of a supercharging pressure in a lean region is enhanced by control of a valve timing of an exhaust valve while a combustion state is restrained from varying. A variable valve mechanism that can change an opening timing of the exhaust valve while keeping a closing timing of the exhaust valve constant, is included in the lean-burn engine. When a target operation point is located in the lean region, and when an actual supercharging pressure is lower than a target supercharging pressure, supercharging pressure increasing control that advances the opening timing while keeping the closing timing constant is executed by operating the variable valve mechanism.
Inventors:
HOTTA SHINTARO (JP)
Application Number:
PCT/JP2015/005872
Publication Date:
August 04, 2016
Filing Date:
November 26, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
International Classes:
F02D41/30; F01L13/00; F01N3/20; F02D13/02; F02D41/00; F02D41/10
Domestic Patent References:
| WO2005035958A1 | 2005-04-21 |
Foreign References:
| JP2004183510A | 2004-07-02 | |||
| EP2366879A2 | 2011-09-21 | |||
| EP1856393A1 | 2007-11-21 | |||
| EP2397675A2 | 2011-12-21 | |||
| DE102008057930A1 | 2010-05-20 | |||
| JP2004183510A | 2004-07-02 | |||
| JP2000345889A | 2000-12-12 |
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (Takahashi & Partners Konwa Bldg. 7F, 12-22 Tsukiji 1-chome, Chuo-k, Tokyo 45, JP)
Download PDF: