A gas engine has a first fuel feed system, a second fuel feed system and a third fuel feed system. The gas engine is operated by introducing combustion air into a combustion chamber of the engine. In a first mode of operation of the engine, gaseous fuel is added to the combustion air via the first f
A gas engine has a first fuel feed system, a second fuel feed system and a third fuel feed system. The gas engine is operated by introducing combustion air into a combustion chamber of the engine. In a first mode of operation of the engine, gaseous fuel is added to the combustion air via the first fuel feed system and ignition fuel is injected into the mixture of gaseous fuel and combustion air via the second fuel feed system. In a second mode of operation of the engine, gaseous fuel is added to the combustion air via the first fuel feed system and ignition fuel is injected into the mixture of gaseous fuel and combustion air via the third fuel feed system.
대표청구항▼
The invention claimed is: 1. A method of operating a gas engine comprising introducing combustion air into a combustion chamber of the engine and, in a first mode of operation of the engine, adding gaseous fuel to the combustion air outside the combustion chamber via a first fuel feed system and in
The invention claimed is: 1. A method of operating a gas engine comprising introducing combustion air into a combustion chamber of the engine and, in a first mode of operation of the engine, adding gaseous fuel to the combustion air outside the combustion chamber via a first fuel feed system and injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air via a second fuel feed system, in a second mode of operation of the engine, shutting down the second feed system, adding gaseous fuel to the combustion air outside the combustion chamber via the first fuel feed system and injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air via a third fuel feed system, and controlling the third fuel feed system so that it injects less than 20% of the total fuel amount supplied to the engine, and supplying fuel to both the second and third fuel feed systems from a common tank, whereby the third fuel feed system provides a backup of the second fuel feed system. 2. A method according to claim 1, wherein the second fuel feed system comprises an injector nozzle for injecting the ignition fuel into the combustion chamber of the engine and the first mode of operation includes dosing the injection fuel using an electrical control connected with each injector nozzle from a common rail. 3. A method according to claim 1, wherein the third fuel feed system comprises an injector nozzle for injecting the ignition fuel into the combustion chamber of the engine and the second mode of operation comprises dosing the fuel under hydromechanical control by means of an injector pump connected to the injector nozzle. 4. A method according to claim 1, wherein the second mode of operation comprises adjusting the engine output by controlling supply of gaseous fuel via the first fuel feed system. 5. A method according to claim 1, comprising acquiring measurement values of operating variables of the second fuel feed system, comparing the measurement values to preset values, and transferring operation of the engine to the second mode in the event that the measurement values differ from the preset values by an amount that exceeds a predetermined level. 6. A method according to claim 5, wherein the step of acquiring measurement values includes acquiring measurement values of pressure of fuel supplied by the first fuel feed system. 7. A method according to claim 5, wherein the first fuel feed system is a common rail system and the method comprises measuring pressure of fuel in the common rail. 8. A gas engine comprising: an air induction means for introducing combustion air into a combustion chamber of the engine, a first fuel feed system for adding gaseous fuel to the combustion air outside the combustion chamber, a second fuel feed system for injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air, a third fuel feed system for injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air, a fuel tank connected to supply fuel to both the second fuel feed system and the third fuel feed system, and an engine control unit for controlling the second and third fuel feed systems such that in a first mode of operation of the engine, the second fuel feed system is shut down, the first fuel feed system adds gaseous fuel to the combustion air and the second fuel feed system injects liquid ignition fuel into the mixture of gaseous fuel and combustion air, and in a second mode of operation of the engine, the first fuel feed system adds gaseous fuel to the combustion air and the third fuel feed system injects liquid ignition fuel into the mixture of gaseous fuel and combustion air, and the third fuel feed system is controlled so that it injects less than 20% of the total fuel amount supplied to the engine, whereby the third fuel feed system provides a backup of the second fuel feed system. 9. A gas engine according to claim 8, wherein the second fuel feed system is a common rail system including a common rail, an injector nozzle for injecting fuel from the common rail into the combustion chamber, and an electrical control unit for controlling the injector nozzle. 10. A gas engine according to claim 8, wherein the third fuel system is a hydromechanical system including an injector nozzle for injecting fuel into the combustion chamber, an injector pump connected to the injector nozzle, and an actuator means coupled to the pump for controlling the pump. 11. A gas engine according to claim 8, comprising a means for acquiring measurement values of an operating variable of the second fuel feed system and supplying the measurement values to the engine control unit when operating in the first mode of operation, and wherein the engine control unit compares the measurement values to preset values and transfers operation to the second mode of operation in the event that the measurement values differ from the preset values by an amount that exceeds a predetermined level. 12. A gas engine according to claim 11, wherein the means for acquiring measurement values comprises a means for acquiring values of fuel pressure. 13. A gas engine according to claim 11, wherein the second fuel feed system is a common rail system and the means for acquiring measurement values includes means for acquiring values of pressure of fuel in the common rail. 14. A gas engine according to claim 8, wherein the air induction means comprises a feed channel for supplying combustion air to the combustion chamber and the first fuel feed system comprises a fuel feed valve connected to the feed channel for adding the gaseous fuel to the combustion air in the feed channel. 15. A method according to claim 1, comprising introducing combustion air into the combustion chamber of the engine by way of a feed channel and adding gaseous fuel to the combustion air via a fuel feed valve connected to the feed channel, and injecting ignition fuel into the mixture of gaseous fuel and combustion air in the combustion chamber. 16. A method of operating a gas engine comprising: introducing combustion air into a combustion chamber of the engine and adding gaseous fuel to the combustion air outside the combustion chamber via a gaseous-fuel feed system, injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air via a common rail liquid-fuel feed system, in the event of malfunction of the common rail liquid-fuel feed system, shutting down the common rail liquid-fuel feed system, injecting liquid ignition fuel into the mixture of gaseous fuel and combustion air via a hydromechanical liquid-fuel injection system, and controlling the hydromechanical liquid-fuel injection system so that it injects less than 20% of the total fuel amount supplied to the engine, and supplying fuel to both the common rail liquid-fuel feed system and the hydromechanical liquid-fuel feed system from a common tank, whereby the hydromechanical liquid-fuel feed system provides a backup of the common rail liquid-fuel feed system. 17. A method according to claim 16, wherein the common rail liquid-fuel feed system injects liquid injection fuel into the combustion chamber. 18. A method according to claim 16, wherein the hydromechanical liquid-fuel feed system includes an injector nozzle for injecting liquid fuel into the combustion chamber and an injection pump for supplying liquid fuel to the injector nozzle. 19. A method according to claim 18, wherein the gas engine has multiple combustion chambers and the hydromechanical liquid-fuel feed system comprises multiple injector nozzles, for injecting liquid fuel into the combustion chambers respectively, and multiple injection pumps, for supplying liquid fuel to the injector nozzles respectively, and, in the event of malfunction of the common rail liquid-fuel feed system, the hydromechanical liquid-fuel feed system injects liquid ignition fuel into the combustion chambers respectively.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Ohyama Yoshishige (Katsuta JPX) Nishimura Yutaka (Katsuta JPX) Sato Yoshio (Hitachi JPX) Nishihara Motohisa (Katsuta JPX) Azuhata Shigeru (Hitachi JPX) Ito Kazuyuki (Katsuta JPX), Control apparatus for and control method of gas turbine.
Beck Niels J. (Bonita CA) Barkhimer Robert L. (Poway CA) Johnson William P. (Valley Center CA), Electronic fuel injection system for internal combustion engines having a common intake port for each pair of cylinders.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.