MILLER CYCLE ENGINE - MITSUBISHI HEAVY IND LTD

Title:

MILLER CYCLE ENGINE

Document Type and Number:

WIPO Patent Application WO/2011/046041

Kind Code:

A1

Abstract:

Disclosed is a Miller cycle engine wherein the heat efficiency is improved by increasing the supply air pressure and the reliability of the mechanical strength and thermal load of the engine body is maintained by maintaining the in-cylinder maximum pressure. Specifically disclosed is a Miller cycle engine characterized by being provided with a supply air valve varying means (36) which controls the valve opening/closing time of the supply air valve (14), a stream turbine (28) which serves as a supply air pressure adding device for additionally increasing only the supply air pressure with respect to supercharging by a supercharger (20) or increasing the supply air pressure more than the exhaust air pressure, and a valve closing time control means (34) which advances the valve closing time of the supply air valve (14) further as the supply air pressure added by the steam turbine (28) is higher to thereby maintain approximately the same in-cylinder maximum pressure as the in-cylinder maximum pressure before the addition.

Inventors:

ISHIDA MICHIYASU (JP)
ODA KENJIRO (JP)
NAMEKAWA SHOUJI (JP)

Application Number:

PCT/JP2010/067423

Publication Date:

April 21, 2011

Filing Date:

October 05, 2010

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
ISHIDA MICHIYASU (JP)
ODA KENJIRO (JP)
NAMEKAWA SHOUJI (JP)

International Classes:

F02D13/02; F01K23/06; F01K23/10; F01N5/02; F02B37/00; F02D15/00; F02D23/00; F02G5/00; F02G5/02

Foreign References:

JPS60122533U	1985-08-19
JP2007239566A	2007-09-20
JP2004183511A	2004-07-02
JPH0233413A	1990-02-02
JP2007518019A	2007-07-05
JP2003314315A	2003-11-06
JP2008025551A	2008-02-07
JPH07305606A	1995-11-21
JP2000220480A	2000-08-08

Other References: