Title:
MULTIFUEL INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2007/148563
Kind Code:
A1
Abstract:
Provided is a multifuel internal combustion engine for improving an engine performance, a fuel consumption performance and an emission performance at a heavy-load running time, in a well-balanced manner. The various-fuel internal combustion engine comprises fuel characteristic detecting means for detecting an ignitability index (Pc) and a volatility index (Pv), which are indexed on the fuel ignitabilities and volatilities of at least two kinds of fuels (F1 and F2) of different natures in a combustion chamber (CC). Further comprised is combustion mode setting means for setting the combustion mode to a stoichiometric compression spontaneous-ignition diffusion-combustion mode, when the ignitability index (Pc) and the volatility index (Pv) are at or higher than an ignitability decision reference value (Pc1) and a volatility decision reference value (Pv1), at which the ignitability index (Pc) and the volatility index (Pv) satisfy such excellent ignitability and volatility, respectively, as are suited for a stoichiometric compression spontaneous-ignition diffusion-combustion mode, and when the running condition is a heavy load. Still further comprised is combustion control executing means for running the engine in the combustion mode set by the combustion mode setting means.
Inventors:
ITO YASUSHI (JP)
TANNO SHIRO (JP)
TANNO SHIRO (JP)
Application Number:
PCT/JP2007/061817
Publication Date:
December 27, 2007
Filing Date:
June 12, 2007
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
ITO YASUSHI (JP)
TANNO SHIRO (JP)
ITO YASUSHI (JP)
TANNO SHIRO (JP)
International Classes:
F02D19/08; F02B1/12; F02B11/00; F02B15/00; F02B23/10; F02D41/02; F02D41/04; F02D45/00
Foreign References:
| JP2004245126A | 2004-09-02 | |||
| JPH0968061A | 1997-03-11 | |||
| JP2001254660A | 2001-09-21 | |||
| JP2002038981A | 2002-02-06 | |||
| JP2006233839A | 2006-09-07 | |||
| JP2004245126A | 2004-09-02 | |||
| JPH0968061A | 1997-03-11 |
Attorney, Agent or Firm:
SAKAI, Hiroaki (Kasumigaseki Building 2-5,Kasumigaseki 3-chome, Chiyoda-ku, Tokyo 19, JP)
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