Multistage supercharging system for a reciprocating engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-033/44
출원번호
US-0299629
(1999-04-27)
우선권정보
JP-0121312 (1998-04-30)
발명자
/ 주소
Kamo Keisuke,JPX
Murata Iwao,JPX
Itonaga Tatsuya,JPX
Yagawa Akira,JPX
Kurihara Masaru,JPX
출원인 / 주소
Fuji Jukogyo Kabushiki Kaisha, JPX
대리인 / 주소
Smith Gambrell & Russell, LLP
인용정보
피인용 횟수 :
51인용 특허 :
0
초록▼
A multistage supercharging system for a reciprocating engine, which is suitable for use in an aircraft capable of flying at high altitude, includes plural stage turbochargers connected in series to each other. A control unit controls operation of these turbochargers. The turbocharger at each stage i
A multistage supercharging system for a reciprocating engine, which is suitable for use in an aircraft capable of flying at high altitude, includes plural stage turbochargers connected in series to each other. A control unit controls operation of these turbochargers. The turbocharger at each stage includes a turbine side bypass passage bypassing the turbine, a compressor side bypass passage bypassing the compressor, a wastegate valve for controlling the flow rate of exhaust flowing through the turbine side bypass passage, a bleed valve for controlling the flow rate of intake air flowing through the compressor side bypass passage, and a pressure sensor disposed at the downstream side of the compressor. The control unit receives a signal from the pressure sensor, and controls the respective valves to selectively operate the turbochargers.
대표청구항▼
[ What is claimed is:] [1.] A multistage supercharging system for a reciprocating engine, comprising:a high pressure turbocharger stage for introducing intake air to the engine and for receiving exhaust from the engine, the high pressure turbocharger stage including:a high pressure stage turbine rot
[ What is claimed is:] [1.] A multistage supercharging system for a reciprocating engine, comprising:a high pressure turbocharger stage for introducing intake air to the engine and for receiving exhaust from the engine, the high pressure turbocharger stage including:a high pressure stage turbine rotated by exhaust from the engine and a high pressure stage compressor driven by said high pressure stage turbine for boosting intake air introduced to the engine,a high pressure stage turbine side bypass passage connecting an upstream side of said high pressure stage turbine with a downstream side of said high pressure stage turbine for allowing said exhaust to bypass said high pressure stage turbine,a high pressure stage compressor side bypass passage connecting a downstream side of said high pressure stage compressor with an upstream side of said high pressure stage compressor for returning compressed intake air to said high pressure stage compressor,a high pressure stage wastegate valve provided in said high pressure stage turbine side bypass passage for controlling an exhaust flow rate in said high pressure stage turbine side bypass passage,a high pressure stage bleed valve provided in said high pressure stage compressor side bypass passage for controlling an intake air flow rate in said high pressure stage compressor side bypass passage,a high pressure stage pressure sensor for measuring intake air pressure downstream of said high pressure stage compressor, andhigh pressure stage valve operating means for operating said high pressure stage wastegate valve and said high pressure stage bleed valve;an intermediate pressure turbocharger stage for introducing intake air to the high pressure turbocharger stage and for receiving exhaust from the high pressure turbocharger stage, the intermediate pressure turbocharger stage including:an intermediate pressure stage turbine rotated by exhaust from said high pressure stage turbine and an intermediate pressure stage compressor driven by said intermediate pressure stage turbine for boosting intake air introduced to said high pressure stage compressor,an intermediate pressure stage turbine side bypass passage connecting an upstream side of said intermediate pressure stage turbine with a downstream side of said intermediate pressure stage turbine for allowing said exhaust to bypass said intermediate pressure stage turbine,an intermediate pressure stage compressor side bypass passage connecting a downstream side of said intermediate pressure stage compressor with an upstream side of said intermediate pressure stage compressor for returning compressed intake air to said intermediate pressure stage compressor,an intermediate pressure stage wastegate valve provided in said intermediate pressure stage turbine side bypass passage for controlling an exhaust flow rate in said intermediate pressure stage turbine side bypass passage,an intermediate pressure stage bleed valve provided in said intermediate pressure stage compressor side bypass passage for controlling an intake air flow rate in said intermediate pressure stage compressor side bypass passage,an intermediate pressure stage pressure sensor for measuring intake air pressure downstream of said intermediate pressure stage compressor, andintermediate pressure stage valve operating means for operating said intermediate pressure stage wastegate valve and said intermediate pressure stage bleed valve;a low pressure turbocharger stage for introducing intake air to the intermediate pressure turbocharger stage and for receiving exhaust from the intermediate pressure turbocharger stage, the low pressure turbocharger stage including:a low pressure stage turbine rotated by exhaust from said intermediate pressure stage turbine and a low pressure stage compressor driven by said low pressure stage turbine for boosting intake air introduced to said intermediate pressure stage compressor,a low pressure stage turbine side bypass passage connecting an upstream side of said low pressure stage turbine with a downstream side of said low pressure stage turbine for allowing said exhaust to bypass said low pressure stage turbine,a low pressure stage compressor side bypass passage connecting a downstream side of said low pressure stage compressor with an upstream side of said low pressure stage compressor for returning compressed intake air to said low pressure stage compressor,a low pressure stage wastegate valve provided in said low pressure stage turbine side bypass passage for controlling an exhaust flow rate in said low pressure stage turbine side bypass passage,a low pressure stage bleed valve provided in said low pressure stage compressor side bypass passage for controlling an intake air flow rate in said low pressure stage compressor side bypass passage,a low pressure stage pressure sensor for measuring intake air pressure downstream of said low pressure stage compressor, andlow pressure stage valve operating means for operating said low pressure stage wastegate valve and said low pressure stage bleed valve; andcontrol means for independently controlling the high pressure stage valve operating means, the intermediate pressure stage valve operating means, and the low pressure stage valve operating means based on respective pressure values obtained from the high pressure stage pressure sensor, the intermediate pressure stage pressure sensor, and the low pressure stage pressure sensor.
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