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Title:
FUEL INJECTION DEVICE OF IN-CYLINDER DIRECT INJECTION CNG ENGINE
Document Type and Number:
Japanese Patent JP2005098146
Kind Code:
A
Abstract:

To provide a fuel injection device of an in-cylinder direct injection CNG engine, compatible for both improvement in WOT output of an engine and stratified lean combustion in a partial load, by expanding its dynamic range, without changing a physical constitution of an injector to a large shape.

This fuel injection device of the in-cylinder direct injection CNG engine 10 has the injector 23 for injecting CNG fuel into a cylinder, and an ECU 27 for determining whether or not an engine operation condition is a stratified lean combustion area and a predetermined small quantity fuel injection area. The injector 23 is composed of a high injection rate injector having a heater 24 for heating the fuel flowing in a fuel passge, and is constituted so as to heat the fuel by the heater 24, when the ECU 27 determines the engine operation condition as the stratified lean combustion area and the predetermined small quantity fuel injection area.


Inventors:
TSUKASAKI YUKIHIRO
YASUDA AKIO
TANIGUCHI SATOSHI
TSURUYA KAZUJI
SAIKAI RIYOUJI
Application Number:
JP2003330381A
Publication Date:
April 14, 2005
Filing Date:
September 22, 2003
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F02M21/02; F02D41/08; F02M31/125; F02M53/00; F02M53/04; (IPC1-7): F02D41/08; F02M21/02; F02M31/125; F02M53/00; F02M53/04