KR100963666B1 - 캠 샤프트를 가진 대형 2행정 디젤엔진용 가변 밸브 타이밍 - Google Patents
캠 샤프트를 가진 대형 2행정 디젤엔진용 가변 밸브 타이밍 Download PDFInfo
- Publication number
- KR100963666B1 KR100963666B1 KR1020080025941A KR20080025941A KR100963666B1 KR 100963666 B1 KR100963666 B1 KR 100963666B1 KR 1020080025941 A KR1020080025941 A KR 1020080025941A KR 20080025941 A KR20080025941 A KR 20080025941A KR 100963666 B1 KR100963666 B1 KR 100963666B1
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic
- exhaust valve
- valve
- volume
- control chamber
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims (10)
- 각각 적어도 한 개의 배기밸브를 가진 복수개의 실린더들;각 실린더와 관련된 적어도 한 개의 배기밸브의 작동을 위한 캠들을 구비한 적어도 한 개의 캠 샤프트;상기 캠 샤프트 상의 각 캠에 의해 구동되는 유압 피스톤 펌프들;배기밸브당 배치되며 상기 배기밸브를 열림 방향으로 움직이기 위한 유압 액츄에이터;배기밸브당 배치되며 유압 피스톤 펌프들과 유압 액츄에이터들을 연결하기 위한 유압도관; 및배기밸브당 배치되며 배기밸브를 닫힘 방향으로 움직이게 하기 위한 탄성부재;를 구비하는 크로스헤드 타입의 대형 2행정 디젤엔진으로서,상기 유압도관은, 유압도관으로부터 유압 유체를 선택적으로 흡수하거나 유압도관으로 유압 유체를 선택적으로 되돌리는 가변 볼륨의 유압 유체를 포함하는 체적제어장치에 연결되고,상기 체적제어장치는 유압도관에 연결된 체적제어챔버를 형성하는 제어 피스톤을 구비하며,상기 제어 피스톤은 복귀성으로 바이어싱되고(resiliently biased),상기 제어피스톤은 체적제어챔버의 반대측에 있는 제1제어챔버, 및 체적제어챔버의 반대측에 있고 제1유압 축적기에 연결된 제2제어챔버를 형성하며,상기 제1제어챔버는 유압 밸브의 일 위치에서 유압 밸브를 통해 상기 제2제어챔버에 연결되고,상기 제1제어챔버는 유압 밸브의 다른 위치에서 상기 유압 밸브를 통해 제2유압 축적기에 연결된 것을 특징으로 하는 디젤엔진.
- 제1항에 있어서,상기 체적제어장치는 상기 유압 도관 내의 압력이 배기밸브를 열기 위해 필요한 압력보다 낮은 사전설정값을 초과할 때 상기 유압 도관으로부터 사전설정된 체적의 유압 유체를 흡수하도록 구성되며, 제어장치 내의 완충(full)은 유압밸브가 상기 일 위치에 있는 때에 배기 밸브의 열림을 지연시키는 상태인 것을 특징으로 하는 디젤엔진.
- 제1항 또는 제2항에 있어서,상기 체적제어장치는, 상기 유압 도관 내의 압력이 배기밸브를 열린 위치에 유지하기 위해 필요한 압력에 대응하고 또한 유압밸브가 상기 다른 위치에 있는 때에 상기 유압 도관으로부터 사전설정된 체적의 유압 유체를 흡수함에 의하여 배기밸브의 닫힘을 앞당기도록 구성된 것을 특징으로 하는 디젤엔진.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2008-00046447 | 2008-02-27 | ||
JP2008046447A JP4592770B2 (ja) | 2008-02-27 | 2008-02-27 | カムシャフトを備える大型2サイクルディーゼルエンジンの可変バルブタイミング |
Publications (2)
Publication Number | Publication Date |
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KR20090092667A KR20090092667A (ko) | 2009-09-01 |
KR100963666B1 true KR100963666B1 (ko) | 2010-06-15 |
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KR1020080025941A KR100963666B1 (ko) | 2008-02-27 | 2008-03-20 | 캠 샤프트를 가진 대형 2행정 디젤엔진용 가변 밸브 타이밍 |
Country Status (3)
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JP (1) | JP4592770B2 (ko) |
KR (1) | KR100963666B1 (ko) |
CN (1) | CN101519985B (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DK177695B1 (en) * | 2012-11-16 | 2014-03-17 | Man Diesel & Turbo Deutschland | A large slow running turbocharged two-stoke uniflow internal combustion engine with crosshead and a cam driven exhaust valve actuation system |
EP3219970A1 (de) * | 2016-03-17 | 2017-09-20 | Winterthur Gas & Diesel AG | Zylinder für einen längsgespülten zweitakt-grossdieselmotor sowie grossdieselmotor |
SE1951201A1 (en) * | 2019-10-23 | 2021-02-23 | Scania Cv Ab | Four-Stroke Internal Combustion Engine and Method of Controlling Timings of an Exhaust Camshaft and an Intake Camshaft |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06288210A (ja) * | 1993-03-31 | 1994-10-11 | Mitsubishi Heavy Ind Ltd | 大形2サイクルエンジンの排気弁油圧駆動装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6210409A (ja) * | 1985-07-05 | 1987-01-19 | Mitsubishi Heavy Ind Ltd | 内燃機関 |
DK170121B1 (da) * | 1993-06-04 | 1995-05-29 | Man B & W Diesel Gmbh | Gliderventil og stor totakts forbrændingsmotor |
JP2008527239A (ja) * | 2005-02-02 | 2008-07-24 | エムエーエヌ・ディーゼル・エーエス | 油圧作動排気ガス弁を備えた大型2サイクルディーゼルエンジン |
WO2006108438A1 (en) * | 2005-04-14 | 2006-10-19 | Man B & W Diesel A/S | Exhaust valve assembly for a large two-stroke diesel engine |
KR101099675B1 (ko) * | 2006-04-12 | 2011-12-28 | 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 | 크로스 헤드 유형의 대형 유니 플로우 2행정 디젤 엔진 |
JP2008038669A (ja) * | 2006-08-02 | 2008-02-21 | Toyota Motor Corp | 内燃機関のバルブタイミング制御装置 |
-
2008
- 2008-02-27 JP JP2008046447A patent/JP4592770B2/ja active Active
- 2008-03-20 KR KR1020080025941A patent/KR100963666B1/ko active IP Right Grant
- 2008-03-21 CN CN2008100845110A patent/CN101519985B/zh active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06288210A (ja) * | 1993-03-31 | 1994-10-11 | Mitsubishi Heavy Ind Ltd | 大形2サイクルエンジンの排気弁油圧駆動装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4592770B2 (ja) | 2010-12-08 |
CN101519985A (zh) | 2009-09-02 |
CN101519985B (zh) | 2011-09-21 |
JP2009203865A (ja) | 2009-09-10 |
KR20090092667A (ko) | 2009-09-01 |
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