US5503121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil supply for a valve actuation device
Assignee: INA Waelzlager Schaeffler OHG
•
Filing: 1995-03-17
•
Granted: 1996-04-02
•
Expires: 2015-03-17
Abstract
Abstract A device for the simultaneous actuation of two gas exchange valves (10) of an internal combustion engine by a camshaft (11) rotatably supported in a camshaft bearing (15,16), said device comprising a bridge (3) which, with the interposition of hydraulic valve clearance compensation elements (7), is in contact with valve shaft ends (9) of the gas exchange valves (10), and a guide rail (2) on which the bridge (3) is guided for longitudinal displacement by a linear bearing (5), said guide rail (2) comprising a first oil duct (18) which opens into the linear bearing (5) and a second oil duct (22) implemented in the bridge (3), which connects the valve clearance compensation elements (7) to the linear bearing (5), and the oil passes phase-wise from the first oil duct (18) into the second oil duct (22), characterized in that a third oil duct (21) branches from the first oil duct (18) and opens into the camshaft bearing (15,16).
Inventors
- 👤 Walter Speil
- 👤 Arndt Ihlemann
- 👤 Johann Kecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:16
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; F01L1/143; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/25; F01L1/26; F01M; F01M9/00; F01M9/10; F01M9/102; F01M9/104; F01L2305/00; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A device for the simultaneous actuation of two gas exchange valves (10) of an internal combustion engine by a camshaft (11) rotatably supported in a camshaft bearing (15,16), said device comprising a bridge (3) which, with the interposition of hydraulic valve clearance compensation elements (7), is in contact with valve shaft ends (9) of the gas exchange valves (10), and a guide rail (2) on which the bridge (3) is guided for longitudinal displacement by a linear bearing (5), said guide rail (2) comprising a first oil duct (18) which opens into the linear bearing (5) and a second oil duct (22) implemented in the bridge (3), which connects the valve clearance compensation elements (7) to the linear bearing (5), and the oil passes phase-wise from the first oil duct (18) into the second oil duct (22), characterized in that a third oil duct (21) branches from the first oil duct (18) and opens into the camshaft bearing (15,16).
Claim 2
Independent Claim
159 words
A device for the simultaneous actuation of two gas exchange valves (10) of an internal combustion engine by a camshaft (11) rotatably supported in a camshaft bearing (15,16), said device comprising a bridge (3) which, with the interposition of hydraulic valve clearance compensation elements (7), is in contact with valve shaft ends (9) of the gas exchange valves (10), and a guide rail (2) on which the bridge (3) is guided for longitudinal displacement by a linear bearing (5), said guide rail (2) comprising a first oil duct (18) which opens into the linear bearing (5) and a second oil duct (22) implemented in the bridge (3), which connects the valve clearance compensation elements (7) to the linear bearing (5), and the oil passes phase-wise from the first oil duct (18) into the second oil duct (22), characterized in that a third oil duct (21) branches from the first oil duct (18) and opens into the camshaft bearing (15,16).
Claim 3
Dependent Claim
54 words
A device of claim 1 wherein the guide rail (2) and the camshaft bearing (15,16) are connected by an engine element (14) on which is implemented a bearing cap piece (15) or a bearing block (16) of the camshaft bearing (15,16), and the third oil duct (21) is formed in the engine element (14).
Claim 4
Dependent Claim
27 words
A device of claim 1 wherein a fourth oil duct (27) connects the camshaft bearing (15,16) with a bore (28) provided for a cylinder head screw (29).
Claim 5
Dependent Claim
37 words
A device of claim 3 wherein the fourth oil duct (27) which opens into a bearing block (16) formed on the cylinder head (1) for the divided camshaft bearing (15,16) is made in the cylinder head (1).
Claim 6
Dependent Claim
51 words
A device of claim 4 wherein several bores (28) disposed in a row for cylinder head screws (29) are provided in each of which opens one of the fourth oil ducts (27), and the bores (28) are interconnected via a gallery bore (30) from which oil flows into the bores (28).
Claim 7
Dependent Claim
52 words
A device of claim 3 wherein several guide rails (2) disposed in a row are provided whose first oil ducts (18) open into a gallery bore (33) arranged transversely to the guide rails (2) in the cylinder head (1), from which gallery bore (33) oil flows into the first oil ducts (18).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-02 | 1999-10-02 | 2000-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-02 | 2003-10-02 | 2004-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-02 | 2007-10-02 | 2008-04-02 | $7700.00 | Window Closed / Lapsed |