To keep an exhaust gas temperature constant by stably burning a fuel gas even in starting and in operation at a low load in a lean burn gas engine.
In a method for feeding the fuel gas and air in the lean burn gas engine E, the fuel gas fed from a fuel main tube 7 thereto through a fuel tube 11 having a gas pressure regulator 18 is mixed with air by a carburetor 12. The air-fuel mixture is led into the air intake port of a supercharger 5 through a pipeline 9 having a throttle valve 8, compressed by the supercharger 5, and fed to the cylinder 2 of the gas engine E. Also, when the gas engine E is under intermediate and high loads, the fuel gas fed from the fuel main tube 7 thereto through a fuel branch tube 7a is mixed with the air compressed by the supercharger 5 and fed from an air supply tube 4 thereto through an air supply branch tube 4a, and the air-fuel mixture is fed to the cylinder 2.
COPYRIGHT: (C)2005,JPO&NCIPI
Sadao Nakayama
Satoru Goto
| JP3275970A |
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama