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Title:
PILOT OIL SUPPLY TIMING ADJUSTING METHOD AND PILOT OIL SUPPLY TIMING ADJUSTING DEVICE FOR PILOT IGNITION GAS ENGINE
Document Type and Number:
Japanese Patent JP2005315177
Kind Code:
A
Abstract:

To operate an engine with high thermal efficiency, by injecting engine ignition pilot oil into a combustion chamber at proper timing, responding to change in fuel gas composition containing inert gas.

A pilot oil supply timing adjusting device comprises: a gas sensor 4 measuring the fuel gas component to be supplied in the combustion chamber; a fuel gas composition determining part 5 calculating inert gas concentration in the combustion gas from the measurement result; a data storing part 6 for setting the pilot oil supply timing, which stores data on a relation between the preset inert gas concentration and the pilot oil supply timing; a pilot oil supply timing setting part 7 collating the inert gas concentration in the fuel gas, calculated by the fuel gas composition determining part 5 with the data on the relation stored in the data storing part 6 to set the pilot oil supply timing with respect to the concentration; and a pilot oil supply timing adjusting part 9 adjusting pilot oil injection timing of a pilot fuel injection valve, based on pilot injection timing set by the pilot oil supply timing setting part 7.


Inventors:
GOTO SATORU
NISHI EIBUN
KURODA SUMIO
Application Number:
JP2004000134351
Publication Date:
November 10, 2005
Filing Date:
April 28, 2004
Export Citation:
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Assignee:
NIIGATA POWER SYSTEMS CO LTD
SUMITOMO METAL IND
International Classes:
F02M21/02; F02D19/02; F02D19/10; F02D41/02; F02D41/38; F02D41/40; F02D43/00; F02D45/00; (IPC1-7): F02D19/10; F02D19/02; F02D41/02; F02D41/38; F02D41/40; F02D43/00; F02D45/00; F02M21/02
Domestic Patent References:
JPH11324750A1999-11-26
JPH10148143A1998-06-02
JPS60112641U1985-07-30
JP2001020784A2001-01-23
Attorney, Agent or Firm:
Masatake Shiga
Takahashi Nobuo
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Murayama Yasuhiko