[특허]Method and system for boost pressure control

Ford Global Technologies, LLC

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

안녕하세요!
ScienceON 챗봇입니다.
궁금한 것은 저에게 물어봐주세요.

특허 상세정보

MyON담기

내보내기

Method and system for boost pressure control

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02B-037/04 F02D-041/10 F02D-011/10 F02B-037/12 F02B-037/14 F02B-037/16 F02B-037/18 F02B-039/10 F02D-041/00 F02B-039/16
출원번호	US-0160880 (2016-05-20)
등록번호	US-10024226 (2018-07-17)
발명자 / 주소	Xiao, Baitao Ossareh, Hamid-Reza Banker, Adam Nathan
출원인 / 주소	Ford Global Technologies, LLC
대리인 / 주소	Voutyras, Julia
인용정보	피인용 횟수 : 0 인용 특허 : 12

초록

Methods and systems are provided for controlling boost pressure in a staged engine system comprising a turbocharger and an upstream electric supercharger. In one example, a method may include coordinating the operation of the electric supercharger and an electric supercharger bypass valve and to open the electric supercharger bypass valve to reduce the extent and duration of electric supercharger overboost.

대표
청구항
▼

1. A method for a boosted engine, comprising: while a downstream compressor spins up, accelerating an upstream compressor with a bypass valve, coupled in a bypass across the upstream compressor, closed to provide a flow of compressed air to a piston engine; andin response to a boost pressure overshoot, opening the bypass valve. 2. The method of claim 1, wherein the downstream compressor is larger than the upstream compressor. 3. The method of claim 1, wherein opening the bypass valve includes transiently opening the bypass valve from a fully closed position, each of a degree of opening of the bypass valve and a duration of opening of the bypass valve based on the boost pressure overshoot, the boost pressure overshoot occurring downstream of the downstream compressor, the boost pressure overshoot including actual boost pressure exceeding a desired boost pressure, the method further comprising maintaining an intake throttle open. 4. The method of claim 3, wherein one or more of the degree of opening of the bypass valve and the duration of opening of the bypass valve is increased as the actual boost pressure exceeds the desired boost pressure, the bypass valve closed when the actual boost pressure is at the desired boost pressure. 5. The method of claim 3, wherein the upstream compressor is accelerated via an electric motor and the downstream compressor is driven by an exhaust turbine, and wherein accelerating the upstream compressor includes operating the electric motor at a motor speed based on the desired boost pressure. 6. The method of claim 5, further comprising, in response to the boost pressure overshoot while flowing compressed air via the upstream compressor, decelerating the upstream compressor by reducing the motor speed of the electric motor. 7. The method of claim 5, further comprising, in response to a rotation speed of the exhaust turbine being higher than a threshold speed, decelerating the upstream compressor, opening the bypass valve, and flowing compressed air to the piston engine via the downstream compressor while bypassing the upstream compressor. 8. The method of claim 7, further comprising, in response to a boost pressure overshoot while flowing compressed air via the downstream compressor, accelerating the upstream compressor with the bypass valve closed to limit airflow into the downstream compressor. 9. The method of claim 8, further comprising, in response to the boost pressure overshoot while flowing compressed air via the downstream compressor, increasing an opening of one or more of a wastegate valve and a compressor recirculation valve coupled in a bypass across the downstream compressor, and, in response to the boost pressure overshoot while flowing compressed air via the upstream compressor, maintaining each of the wastegate valve and the compressor recirculation valve closed. 10. The method of claim 9, wherein the wastegate valve is actuated with a higher than default gain tuning while flowing compressed air via the upstream compressor, and with the default gain tuning while flowing compressed air via the downstream compressor. 11. An engine method, comprising: during a first boost pressure overshoot condition, increasing opening of a bypass valve coupled in a bypass across a first, upstream compressor; andduring a second boost pressure overshoot condition, increasing opening of a wastegate valve coupled in a bypass across an exhaust turbine, the turbine driving a second, downstream compressor, wherein during both the first and second conditions, the boost pressure overshoot is downstream of the second compressor. 12. The method of claim 11, wherein during the first boost pressure overshoot condition, a flow of compressed air is provided to an engine via the first compressor with the second compressor disabled, the first compressor driven by an electric motor, and wherein during the second boost pressure overshoot condition, the flow of compressed air is provided to the engine via the second compressor while bypassing the first compressor, the second compressor driven by the exhaust turbine. 13. The method of claim 12, wherein during the first boost pressure overshoot condition, a turbine speed is below a threshold speed, and airflow through the second compressor is below a threshold flowrate, and wherein during the second boost pressure overshoot condition, the turbine speed is above the threshold speed, and the airflow through the second compressor is above the threshold flowrate. 14. The method of claim 12, further comprising maintaining a position of the wastegate valve during the first boost pressure overshoot condition, maintaining a position of the bypass valve during the second boost pressure overshoot condition, and maintaining an opening of an intake throttle during both the first and second boost pressure overshoot conditions. 15. The method of claim 14, wherein each of the first and second boost pressure overshoot conditions includes a boost error between actual boost pressure and desired boost pressure, wherein during the first boost pressure overshoot condition, a position of the bypass valve is based on the desired boost pressure, and each of a degree and a duration of the increasing the opening of the bypass valve is based on the boost error, and wherein during the second condition, the position of the wastegate valve is based on the desired boost pressure, and a degree of increasing the opening of the wastegate valve is based on the boost error. 16. The method of claim 15, further comprising reducing a speed of the electric motor during the first boost pressure overshoot condition from a first motor speed based on the desired boost pressure to a second motor speed based on the boost error. 17. The method of claim 14, wherein increasing the opening of the bypass valve during the first boost pressure overshoot condition includes increasing the opening of the bypass valve until the boost error is reduced and then closing the bypass valve while continuing to accelerate the first compressor. 18. An engine system, comprising: an engine having an intake;a first intake compressor driven by an electric motor, the motor powered by a battery;a second intake compressor driven by an exhaust turbine, the second compressor positioned downstream of the first compressor along the intake;a bypass including a bypass valve coupled across the first compressor;a wastegate including a wastegate valve coupled across the exhaust turbine; anda controller with computer readable instructions stored on non-transitory memory for: in response to an operator pedal tip-in, flowing compressed air to the engine by operating the first compressor and each of the bypass valve and the wastegate valve closed until a turbine speed is higher than a threshold turbine speed; andin response to a boost pressure overshoot while operating the first compressor, intermittently opening the bypass valve while maintaining the wastegate valve closed. 19. The system of claim 18, wherein the controller includes further instructions for: flowing compressed air to the engine by operating the second compressor while bypassing the first compressor with the bypass valve closed and the wastegate valve partially open after the turbine speed is higher than the threshold turbine speed; andin response to a boost pressure overshoot while operating the second compressor, intermittently increasing an opening of the wastegate valve while maintaining the bypass valve closed. 20. The system of claim 19, wherein the controller includes further instructions for actuating the wastegate valve with a higher than default tuning when the bypass valve is not degraded, and, in response to an indication of bypass valve degradation, actuating the wastegate valve with the default tuning.

이 특허에 인용된 특허 (12)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

특허 상세정보

Method and system for boost pressure control

초록

대표
청구항
▼

이 특허에 인용된 특허 (12)

IPC 상위 출원인

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

특허 상세정보

Method and system for boost pressure control

초록

대표청구항 ▼

이 특허에 인용된 특허 (12)

IPC 상위 출원인

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

대표
청구항
▼