AUXILIARY CHAMBER TYPE GAS ENGINE AND OPERATION CONTROL METHOD THEREOF

Japanese Patent JP2014163293

A

PROBLEM TO BE SOLVED: To provide an auxiliary chamber type gas engine and an operation control method thereof capable of improving a flame propagation combustion efficiency and low emission even in a lean mixture.SOLUTION: In the auxiliary chamber type gas engine, a laser spark plug is provided in an auxiliary chamber. In the compression stroke, a lean premixed mixture in a main combustion chamber is allowed to flow into the auxiliary chamber via an injection hole. At this time, an excess air factor λ', of an air-fuel mixture in the auxiliary chamber and the main combustion chamber is to be 2.0 which is equal to or less than a stoichiometric air-fuel ratio. The volume of the auxiliary chamber is to be 12 cc which is calculated based on the excess air factor λ'(2.0). The lean mixture is thereby fired with the laser spark plug, allowing smooth torch combustion and flame propagation combustion to be performed into a stable combustion.

YUNOKI AKIHIRO
ISHIGURO TATSUO
HOTTA KAZURO
ODA YUJI

JP2013035200A

September 08, 2014

February 25, 2013

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MITSUBISHI HEAVY IND LTD

F02B19/16; F02B19/10; F02B19/12; F02B43/10; F02M21/02; F02P13/00; F02P23/04

JP2010261407A	2010-11-18
JPH0633769A	1994-02-08
JP2011185237A	2011-09-22
JP2005240712A	2005-09-08
JP2009203952A	2009-09-10
JP2003278548A	2003-10-02
JP2009221936A	2009-10-01
JP2010261407A	2010-11-18
JPH0633769A	1994-02-08
JP2011185237A	2011-09-22
JP2005240712A	2005-09-08
JP2009203952A	2009-09-10

WO2011054610A1

2011-05-12

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