Method and an arrangement in connection with a turbocharged piston engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-033/44
F02B-047/02
F02M-025/00
출원번호
US-0916336
(2006-05-11)
등록번호
US-8109093
(2012-02-07)
우선권정보
FI-20055275 (2005-06-02)
국제출원번호
PCT/FI2006/050188
(2006-05-11)
§371/§102 date
20080108
(20080108)
국제공개번호
WO2006/128961
(2006-12-07)
발명자
/ 주소
Hallbäck, Björn
Takala, Piia
출원인 / 주소
Wärtsilä Finland Oy
대리인 / 주소
Chernoff, Vilhauer, McClung & Stenzel
인용정보
피인용 횟수 :
3인용 특허 :
28
초록▼
The invention relates to a method and an arrangement in connection with a piston engine provided with a turbocompressor. In the method, combustion air from the engine is pressurized by the compressor of the turbocompressor, pressurized combustion air is humidified, fuel is combusted in the cylinder
The invention relates to a method and an arrangement in connection with a piston engine provided with a turbocompressor. In the method, combustion air from the engine is pressurized by the compressor of the turbocompressor, pressurized combustion air is humidified, fuel is combusted in the cylinder of the engine by means of combustion air and the exhaust gases generated during the combustion are conveyed by means of combustion air to the turbine of the turbocompressor. A partial flow is separated from the pressurized combustion air flow, conveyed past the engine and combined with the exhaust gas flow going to the turbine.
대표청구항▼
1. A method of operating a turbocompressor-piston engine to prevent surge condition having a compressor on an inlet channel and a turbine on an exhaust channel, a bypass channel, a heat exchanger being downstream of the compressor and upstream of a charge air receiver, injection nozzles injecting wa
1. A method of operating a turbocompressor-piston engine to prevent surge condition having a compressor on an inlet channel and a turbine on an exhaust channel, a bypass channel, a heat exchanger being downstream of the compressor and upstream of a charge air receiver, injection nozzles injecting water droplets or mist at a location upstream of the heat exchanger and downstream of the bypass channel branching off the inlet channel at a compressor outlet, the method comprising steps of: a. pressurizing air with the compressor of the turbocompressor,b. separating the pressurized air from the compressor into a main flow and a partial flow, a volume of the partial flow being 5-10% of the total air flow passing through the compressor, wherein the partial flow branches off from the pressurized air flow only in the event that the load of the engine is 50-85% of a maximum load of the engine,c. humidifying the main flow of pressurized air by injecting the water droplets or mist,d. heating the main flow of pressurized and humidified air,e. conveying the main flow of pressurized, humidified and heated air to the engine,f. combusting fuel in a cylinder of the engine with the pressurized, humidified and heated air,g. conveying a flow of exhaust gases generated during the combustion directly to an inlet of the turbine of the turbocompressor, andh. conveying the partial flow bypassing the engine and combining the partial flow with the flow of exhaust gases to the turbine. 2. A method of operating a turbocompressor-piston engine to prevent surge condition having a compressor on an inlet channel and a turbine on an exhaust channel, a bypass channel having a control valve, a heat exchanger being downstream of the compressor and upstream of a charge air receiver, injection nozzles injecting water droplets or mist at a location upstream of the heat exchanger and downstream of the bypass channel branching off the inlet channel at a compressor outlet, the method comprising steps of: a. pressurizing air with the compressor of the turbocompressor,b. separating the pressurized air from the compressor into a main flow and a partial flow, a volume of the partial flow being 5-10% of the total air flow passing through the compressor, wherein the partial flow branches off from the pressurized air flow only in the event that the load of the engine is 50-85% of a maximum load of the engine;c. humidifying the main flow of pressurized air by injecting the water droplets or mist,d. heating the main flow of pressurized and humidified air,e. conveying the main flow of pressurized, humidified and heated air to the engine,f. combusting fuel in a cylinder of the engine with the pressurized, humidified and heated air, andg. conveying a flow of exhaust gases generated during the combustion directly to an inlet of the turbine of the turbocompressor, andh. adjusting the control valve to maintain a pressure of the partial flow of pressurized air at a pressure lower than that at the inlet of the engine. 3. A method according to claim 2, wherein the step of conveying the partial flow of pressurized air bypassing the engine combines with the flow of exhaust gases to the turbine.
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이 특허에 인용된 특허 (28)
Moraal Paul Eduard,DEX ; Carberry Brendan Patrick,DEX, Automotive engine with controlled exhaust temperature and oxygen concentration.
Melchior Jean F. (Neuilly-sur-Seine FRX), Methods of supercharging a diesel engine, in supercharged diesel engines, and in supercharging units for diesel engines.
O\Neill Jeff S. (Columbus IN) Schisler H. Edmund (Columbus IN) Kubo Isoroku (Columbus IN), Pollution control apparatus and method for a turbodiesel motor-generator set.
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