SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE

Title:

SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2011/067865

Kind Code:

A1

Abstract:

A spark ignition type internal combustion engine includes a plurality of cylinders, in some of which combustion can be halted. The spark ignition type internal combustion engine further includes a variable compression ratio mechanism (A) capable of changing a mechanical compression ratio and a variable valve timing mechanism (B) capable of controlling the closing timing of an intake valve (7). When some of the cylinders are deactivated or when the number of deactivated cylinders is increased, the closing timing of the intake valve (7) is shifted in the direction approaching an intake bottom dead center, and the mechanical compression ratio of a cylinder in operation is reduced. By thus deactivating some of a plurality of cylinders, it is possible to obtain a high thermal efficiency even in a low engine load region.

Inventors:

HISAMINATO NAOTO (JP)
KAMIYAMA EIICHI (JP)
TATENO MANABU (JP)

Application Number:

PCT/JP2009/070717

Publication Date:

June 09, 2011

Filing Date:

December 04, 2009

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TOYOTA MOTOR CO LTD (JP)
HISAMINATO NAOTO (JP)
KAMIYAMA EIICHI (JP)
TATENO MANABU (JP)

International Classes:

F02D17/02; F02D13/02; F02D15/04

Foreign References:

JP2006009601A	2006-01-12
JP2009114963A	2009-05-28
JP2009114965A	2009-05-28
JP2007303423A	2007-11-22
JPS6285142A	1987-04-18
JPS56122735A	1981-09-26
JP2002256950A	2002-09-11
JP2002349304A	2002-12-04
JP2005127216A	2005-05-19

Other References: