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Title:
AUXILIARY-COMBUSTION-CHAMBER TYPE SPARK-IGNITION GAS-ENGINE
Document Type and Number:
Japanese Patent JP2012172657
Kind Code:
A
Abstract:

To simply achieve more stable combustion using other parameters without detecting a pressure within an auxiliary combustion chamber.

A main-combustion-chamber gas-pressure adjustment valve 48a is provided for a main-combustion-chamber gas-supply branch pipe 28a supplying a fuel gas g to a main combustion chamber 68, and an auxiliary-combustion-chamber gas-pressure adjustment valve 48b is provided for an auxiliary-combustion-chamber gas-supply branch pipe 28b supplying fuel gas g to an auxiliary combustion chamber 72. A controller 50 controls a ratio ΔPp/ΔPm of a differential pressure ΔPp between an auxiliary-combustion-chamber fuel-gas pressure Pp and an air supply pressure Ps to a differential pressure ΔPm between a main-combustion-chamber fuel-gas pressure Pm and the air supply pressure Ps to control an auxiliary-combustion-chamber excess air ratio λ to a theoretical air/fuel ratio. This achieves stable combustion in the main-combustion-chamber 68.


Inventors:
ISHIDA MICHIYASU
NAMEKAWA SHOJI
OSAKI RYUSUKE
WATANABE SOTA
NAGASAWA JO
Application Number:
JP2011038638A
Publication Date:
September 10, 2012
Filing Date:
February 24, 2011
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F02D19/02; F02B19/10; F02B43/04; F02M21/02
Domestic Patent References:
JPH1047095A1998-02-17
JP2002317664A2002-10-31
JPH0914057A1997-01-14
Attorney, Agent or Firm:
Patent business corporation Takahashi Matsumoto & Partners



 
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