INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2008/108234

A1

Provided is an internal combustion engine (10) including a plurality of cylinders and having an intake passage equipped with an intake control valve which can be used for an impulse supercharge. The cylinders (16) are individually equipped with intake passages (P11, P12, P13 and P14), which are formed to equalize the intake charging efficiencies substantially among the cylinders and which have passage lengths contributing to the generations of column vibrations. These intake passages (P11, P12, P13 and P14) are individually or commonly equipped with an intake control valve (56) for an impulse supercharge. The intake control valve (56) is opened/closed at such a timing as corresponds to the passage lengths (L11, L12, L13 and L14) of the individual intake passages (P11, P12, P13 and P14). Specifically, the passage lengths (L11, L12, L13 and L14) of the intake passages (P11, P12, P13 and P14) are lengths from the intake valve positions of the individual cylinders (16) to the downstream end portion of a surge tank (22).

JPH0745809

INDUSTRIAL APPLICABILITY: Engine intake device

ITO YASUSHI (JP)
KATSUMATA SHOUJI (JP)
YOEDA KEIJI (JP)
NISHIDA HIDEYUKI (JP)
TANNO SHIRO (JP)

PCT/JP2008/053341

September 12, 2008

February 20, 2008

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TOYOTA MOTOR CO LTD (JP)
ITO YASUSHI (JP)
KATSUMATA SHOUJI (JP)
YOEDA KEIJI (JP)
NISHIDA HIDEYUKI (JP)
TANNO SHIRO (JP)

F02B29/08; F02B27/00; F02D9/02; F02D41/02

JPH05187238A	1993-07-27
JPS63263220A	1988-10-31
JPH07139360A	1995-05-30
JPH09250350A	1997-09-22
JPH0726539A	1995-01-27
JP2002180894A	2002-06-26
JP2000248946A	2000-09-12
JP2006283639A	2006-10-19
JP2005180182A	2005-07-07

TANI, Yoshikazu et al. (Akasaka 2-chomeMinato-ku, Tokyo 52, JP)

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