GB909707A - Improvements in or relating to hydraulic devices for taking up axial play in valve gears, notably of internal combustion engines - Google Patents
Improvements in or relating to hydraulic devices for taking up axial play in valve gears, notably of internal combustion enginesInfo
- Publication number
- GB909707A GB909707A GB3609/59A GB360959A GB909707A GB 909707 A GB909707 A GB 909707A GB 3609/59 A GB3609/59 A GB 3609/59A GB 360959 A GB360959 A GB 360959A GB 909707 A GB909707 A GB 909707A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pressure
- bore
- valve
- chamber
- 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.)
- Expired
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
- F01L1/20—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
- F01L1/2422—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means or a hydraulic adjusting device located between the push rod and rocker arm
-
- 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
- F01L2309/00—Self-contained lash adjusters
Abstract
909,707. Valve gear. REGIE NATIONAL DES USINES RENAULT. Feb. 2, 1959 [Feb. 5, 1958], No. 3609/59. Class 7(6) In a hydraulic clearance take-up device a tappet 1, Fig. 1, or rocker body, has a bore 1c and a piston 2a forming two chambers 9, 10, which are filled with fluid and sealed by a packing 7, 8, slidably mounted in the bore and surrounding the piston rod 2b, chamber 10 communicates with chamber 9 through a passage 2d in the piston, having a non-return valve 3, and pressure means acts on the fluid so as to force the piston rod out of the bore. During valve lift cam pressure on face 1a causes increase of pressure in chamber 9 to seat the valve 3 and pressure fluid passes through a small annular clearance between piston 2a and bore 1c to cause a slow reduction in length. On the return stroke spring 6 applies pressure to the packing 7, 8 to take up the axial clearance. In another embodiment the spring may be replaced by a source of pressure fluid, e.g. engine oil. In a modification, the piston 2, Fig. 4, is carried directly in a rocker arm 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR757545 | 1958-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB909707A true GB909707A (en) | 1962-10-31 |
Family
ID=8705670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3609/59A Expired GB909707A (en) | 1958-02-05 | 1959-02-02 | Improvements in or relating to hydraulic devices for taking up axial play in valve gears, notably of internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB909707A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052704A1 (en) * | 1980-11-21 | 1982-06-02 | RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A | A self adjusting hydraulic tappet for heat engines |
| WO2002061240A3 (en) * | 2001-02-02 | 2002-09-26 | Mahle Ventiltrieb Gmbh | Hydraulic control device |
| EP2196636A1 (en) * | 2007-10-03 | 2010-06-16 | Toyota Jidosha Kabushiki Kaisha | Sealed lash adjuster and seal structure between first and second parts |
| JP2010209711A (en) * | 2009-03-07 | 2010-09-24 | Toyota Motor Corp | Sealed lash adjuster |
| JP2012132472A (en) * | 2012-04-12 | 2012-07-12 | Toyota Motor Corp | Seal structure between first component and second component |
| IT201600083173A1 (en) * | 2016-08-05 | 2018-02-05 | Gnutti Carlo Spa | HYDRAULIC PUNTER. |
| CN113931712A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | Rocker arm assembly with variable valve lift |
-
1959
- 1959-02-02 GB GB3609/59A patent/GB909707A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052704A1 (en) * | 1980-11-21 | 1982-06-02 | RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A | A self adjusting hydraulic tappet for heat engines |
| WO2002061240A3 (en) * | 2001-02-02 | 2002-09-26 | Mahle Ventiltrieb Gmbh | Hydraulic control device |
| EP2196636A1 (en) * | 2007-10-03 | 2010-06-16 | Toyota Jidosha Kabushiki Kaisha | Sealed lash adjuster and seal structure between first and second parts |
| EP2196636A4 (en) * | 2007-10-03 | 2012-03-07 | Toyota Motor Co Ltd | Sealed lash adjuster and seal structure between first and second parts |
| US8261710B2 (en) | 2007-10-03 | 2012-09-11 | Toyota Jidosha Kabushiki Kaisha | Sealed lash adjuster and seal structure between first and second parts |
| JP2010209711A (en) * | 2009-03-07 | 2010-09-24 | Toyota Motor Corp | Sealed lash adjuster |
| JP2012132472A (en) * | 2012-04-12 | 2012-07-12 | Toyota Motor Corp | Seal structure between first component and second component |
| IT201600083173A1 (en) * | 2016-08-05 | 2018-02-05 | Gnutti Carlo Spa | HYDRAULIC PUNTER. |
| WO2018025149A1 (en) * | 2016-08-05 | 2018-02-08 | Gnutti Carlo S.P.A. | Hydraulic tappet |
| CN109790764A (en) * | 2016-08-05 | 2019-05-21 | 优特卡洛股份公司 | Hydraulic tappet |
| CN113931712A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | Rocker arm assembly with variable valve lift |
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