Gas engine

• Main Author: HAGIWARA RYOUICHI
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2011
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

Provided is a gas engine wherein NOx concentration in exhaust gas can be maintained properly regardless of fuel gas composition. A gas engine (101) comprises a fuel gas supply regulation valve (45) for regulating fuel gas supply, an engine speed sensor (71) for detecting engine speed, an engine torque sensor (72) for detecting engine load, and a controller (50) for calculating a proper fuel gas supply and regulating the fuel gas supply regulation means to ensure the proper fuel gas supply thus calculated, wherein the controller (50), calculates the temperature difference of a combustion chamber in the combustion stroke of one combustion cycle by recognizing at least the engine speed and engine load and calculates the NOx concentration in exhaust gas based on the temperature difference, calculates a proper fuel gas supply based on the NOx concentration and regulates the fuel gas supply regulation valve (45) to ensure the proper fuel gas supply.