CA3034548A1 - Variable valve tappet - Google Patents
Variable valve tappet Download PDFInfo
- Publication number
- CA3034548A1 CA3034548A1 CA3034548A CA3034548A CA3034548A1 CA 3034548 A1 CA3034548 A1 CA 3034548A1 CA 3034548 A CA3034548 A CA 3034548A CA 3034548 A CA3034548 A CA 3034548A CA 3034548 A1 CA3034548 A1 CA 3034548A1
- Authority
- CA
- Canada
- Prior art keywords
- tappet
- base
- push rod
- holder
- valve push
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- 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
- F01L1/12—Transmitting gear between valve drive and valve
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/245—Hydraulic tappets
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/245—Hydraulic tappets
- F01L1/25—Hydraulic tappets between cam and valve stem
-
- 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
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0031—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of tappet or pushrod length
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A variable valve tappet, comprising a tappet base (9) and a holder (12). The tappet base (9) is of a cylinder structure having a T-shaped hollow cylindrical groove provided on an upper portion thereof, and a tappet sleeve (14) being of a hollow cylinder structure is fit over the tappet base (9). The tappet further comprises a valve push rod base (16) being of a cylinder structure. An additional lift cavity (20) is formed between the lower surface of the valve push rod base (16) and the tappet base (9). The holder (12) is of a hollow cylindrical structure. The upper surface of the valve push rod base (16) extends outwards along the outer edge of the cylinder to match the inner surface of the holder (12), so that an oil storage cavity (17) is formed between the upper surface of the valve push rod base (16) and the inner surface of the holder (12). An oil pumping cavity (11) is formed among the outer surface of the holder (12), the inner surface of the tappet sleeve (14), and the tappet base (9). A tappet spring (19) is provided in the oil pumping cavity (11) outside the valve push rod base (16). The tappet sleeve (14) is provided with an oil inlet (8) connected to an oil supply system, and an oil return port (22) connected to an oil return system. The upper surface of the valve push rod base (16) is connected to a valve push rod (15). A cam (1) is provided directly below the tappet base (9). The variable valve tappet can achieve valve timing and lift control in operating situations where an engine have different speeds, and features low costs, high applicability, and high stability.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610841364.1 | 2016-09-22 | ||
CN201610841364.1A CN106285811B (en) | 2016-09-22 | 2016-09-22 | A kind of changeable air valve tappet |
PCT/CN2016/102665 WO2018053892A1 (en) | 2016-09-22 | 2016-10-20 | Variable valve tappet |
Publications (2)
Publication Number | Publication Date |
---|---|
CA3034548A1 true CA3034548A1 (en) | 2018-03-29 |
CA3034548C CA3034548C (en) | 2019-06-04 |
Family
ID=57712651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA3034548A Expired - Fee Related CA3034548C (en) | 2016-09-22 | 2016-10-20 | Variable valve tappet |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN106285811B (en) |
CA (1) | CA3034548C (en) |
GB (1) | GB2568621B (en) |
WO (1) | WO2018053892A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116201620B (en) * | 2023-01-31 | 2024-05-17 | 重庆长安汽车股份有限公司 | Hydraulic tappet, engine and vehicle |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB566959A (en) * | 1944-06-16 | 1945-01-22 | Thomas Hindle | Improvements in tappet mechanism for actuating poppet or like valves for internal combustion and other engines |
GB627281A (en) * | 1947-09-18 | 1949-08-04 | Bernard Michael Francis Samuel | Improvements in or relating to hydraulic tappets |
JPS54121314A (en) * | 1978-03-13 | 1979-09-20 | Toyota Motor Corp | Valve lift varying mechanism for internal combustion engine |
JPS54155309A (en) * | 1978-05-27 | 1979-12-07 | Nissan Motor Co Ltd | Valve moving system for internal combustion engine |
JPS59147806A (en) * | 1983-02-10 | 1984-08-24 | Isuzu Motors Ltd | Valve opening and closing control device in internal-combustion engine |
DE3742831A1 (en) * | 1987-12-17 | 1989-07-13 | Kloeckner Humboldt Deutz Ag | TWO-POINT SPRAY ADJUSTER |
DE19804323A1 (en) * | 1998-02-04 | 1999-08-05 | Schaeffler Waelzlager Ohg | Motor vehicle gas change valve tappet switching |
US6357406B1 (en) * | 2000-11-22 | 2002-03-19 | Borgwarner Inc. | Variable valve actuation system |
KR100534833B1 (en) * | 2004-03-26 | 2005-12-08 | 현대자동차주식회사 | A variable valve lift apparatus of engine in automobile |
FI124107B (en) * | 2006-06-30 | 2014-03-14 | Wärtsilä Finland Oy | Piston Engine Gas Exchange Valve Control Arrangement and Method for Controlling a Piston Engine Gas Exchange Valve |
CN201588701U (en) * | 2009-12-11 | 2010-09-22 | 吴爽 | Stepless variable valve lifting mechanism |
CN103742216A (en) * | 2014-01-24 | 2014-04-23 | 赵迎生 | Lift-variable hydraulic tappet |
CN104454070B (en) * | 2014-10-27 | 2017-03-01 | 中北大学 | A kind of electric-controlled hydraulic governor motion of the valve stroke continuous variable based on camshaft |
CN104481625A (en) * | 2014-11-13 | 2015-04-01 | 浙江师范大学 | Variable valve timing system |
CN104564206A (en) * | 2015-01-23 | 2015-04-29 | 吉林大学 | Cam-driven hydraulic fully variably valve mechanism of internal combustion engine |
CN206071662U (en) * | 2016-09-22 | 2017-04-05 | 西华大学 | A kind of changeable air valve tappet |
-
2016
- 2016-09-22 CN CN201610841364.1A patent/CN106285811B/en active Active
- 2016-10-20 GB GB1903051.9A patent/GB2568621B/en not_active Expired - Fee Related
- 2016-10-20 CA CA3034548A patent/CA3034548C/en not_active Expired - Fee Related
- 2016-10-20 WO PCT/CN2016/102665 patent/WO2018053892A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN106285811A (en) | 2017-01-04 |
CN106285811B (en) | 2018-10-19 |
CA3034548C (en) | 2019-06-04 |
GB2568621B (en) | 2019-10-09 |
GB2568621A (en) | 2019-05-22 |
GB201903051D0 (en) | 2019-04-24 |
WO2018053892A1 (en) | 2018-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |
Effective date: 20190221 |
|
MKLA | Lapsed |
Effective date: 20211020 |