|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F02B-037/16 F02B-037/14 F02B-037/04 F02B-039/10 F02D-041/00 F02B-037/12 F02B-039/16|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 9|
Methods and systems are provided for turbocharger speed control in an engine system having multiple staged charge boosting devices. In one example, compressed air is provided by a turbocharger compressor until a turbocharger speed reaches a limit. Thereafter, a compressor of a downstream supercharger is operated to share the load.
1. A method for a boosted piston engine, comprising: bypassing a second compressor and providing a flow of compressed air to the piston engine via a first compressor, wherein the first compressor is staged downstream of the second compressor along an air intake passage; andin response to a shaft speed of the first compressor being at or above a threshold, accelerating the second compressor. 2. The method of claim 1, further comprising, accelerating the second compressor until the shaft speed of the first compressor is below the threshold, and then decele...