Airflow system for engine with series turbochargers
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-033/44
F02B-037/00
출원번호
US-0143799
(2002-05-14)
발명자
/ 주소
Pierpont, David Andrew
출원인 / 주소
Caterpillar Inc
대리인 / 주소
Finnegan, Henderson, Farabow, Garrett & Dunner
인용정보
피인용 횟수 :
5인용 특허 :
9
초록▼
An airflow system for an engine includes a first turbine coupled with a first compressor and a second turbine coupled with a second compressor. The first turbine receives exhaust from the engine, and the first compressor supplies compressed air to the engine. The second compressor compresses air fro
An airflow system for an engine includes a first turbine coupled with a first compressor and a second turbine coupled with a second compressor. The first turbine receives exhaust from the engine, and the first compressor supplies compressed air to the engine. The second compressor compresses air from atmosphere. A first conduit fluidly couples the first and second turbines, and a second conduit fluidly couples the first and second compressors. A wastegate valve is fluidly coupled with the exhaust manifold and movable between a first position in which exhaust fluid is allowed to bypass the first turbine and a second position in which fluid is restricted from bypassing. The airflow system includes a third conduit fluidly coupling the second compressor and the wastegate valve. The wastegate valve moves to the first position when compressed air in the third conduit has at least a predetermined pressure.
대표청구항▼
An airflow system for an engine includes a first turbine coupled with a first compressor and a second turbine coupled with a second compressor. The first turbine receives exhaust from the engine, and the first compressor supplies compressed air to the engine. The second compressor compresses air fro
An airflow system for an engine includes a first turbine coupled with a first compressor and a second turbine coupled with a second compressor. The first turbine receives exhaust from the engine, and the first compressor supplies compressed air to the engine. The second compressor compresses air from atmosphere. A first conduit fluidly couples the first and second turbines, and a second conduit fluidly couples the first and second compressors. A wastegate valve is fluidly coupled with the exhaust manifold and movable between a first position in which exhaust fluid is allowed to bypass the first turbine and a second position in which fluid is restricted from bypassing. The airflow system includes a third conduit fluidly coupling the second compressor and the wastegate valve. The wastegate valve moves to the first position when compressed air in the third conduit has at least a predetermined pressure. amount of time, no errors requiring the encoder to transmit at least one macroblock that is encoded independent of any other macroblocks occur. 17. A method, according to claim 10, further comprising: associating each macroblock with a temporal reference number; and providing a table that maps each temporal reference number with one of a particular one of the reference buffers and a value indicating that a macroblock corresponding to a temporal reference number is not being stored. 18. A method of receiving video data from an encoder, comprising: a decoder receiving into a plurality of reference buffers a plurality of macroblocks that are coded relative to a plurality of reference buffers corresponding to the plurality of macroblocks; the decoder determining if there is an error with respect to a particular macroblock; and in response to an error with respect to a particular macroblock, the decoder indicating a selected one of the reference buffers associated with the particular macroblock is in error. 19. A method, according to claim 18, further comprising: following indicating an error in a selected one of the reference buffers, the decoder receiving a macroblock coded relative to a second one of the reference buffers. 20. A method, according to claim 18, further comprising: following indicating an error in the selected reference buffer, and in response to all reference buffers of the decoder having errors associated therewith, the decoder requesting at least one macroblock that is encoded independent of any other macroblocks. 21. A method, according to claim 20, further comprising: following requesting at least one macroblock that is encoded independent of any other macroblocks, the decoder resetting a timer; and the decoder forgoing requesting another macroblock that is encoded independent of any other macroblocks until the timer has exceeded a predetermined threshold. 22. An apparatus that transmits video data to a decoder, comprising: a plurality of reference buffers that store a plurality of macroblocks; a reference processor unit, coupled to said plurality of reference buffers, that provides at an output at least one motion compensation vector and a motion compensated image of a macroblock provided thereto; a difference unit, coupled to an input video signal and to said output of said reference processor unit, to provide a difference between the input video signal and said output of said reference processor unit at an output; and a coding controller that controls transmission of video data to provide each macroblock as one of: a macroblock that is encoded independent of any other macroblocks and a macroblock coded relative to said output provided by said difference unit; wherein, in response to an error for a macroblock corresponding to a first one of said reference buffers, said coding controller causes said reference processor unit to use a second one of said reference buffers for error recovery if there is no error associated with said second reference buffer. 23. An apparatus, according to claim 22, wherein, in response to all of the reference buffers having errors associated therewith, said coding controller causing transmission of at least one macroblock that is encoded independent of
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이 특허에 인용된 특허 (9)
Oleksiewicz Radek A., Altitude compensating wastegate control system for a turbocharger.
Deckard Mitchel R. ; Frohberg David L. ; Houtz Phillip J. ; Kocian Charles J. ; Lantz Kevin A. ; Maddock James B. ; Uhland Gregg W., Apparatus and method for utilizing a learned wastegate control signal for controlling turbocharger operation.
Lewis ; Jr. Spencer C. ; Rauznitz Peter ; Pyclik Mark W. ; Mohos Joseph F. ; Bryan W. Barry, System and method for controlling a turbocharger to maximize performance of an internal combustion engine.
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