Patent US4805566A successfully refreshed from Google Patents.
US4805566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for influencing the control times of valves
Assignee: Dr Ing HCF Porsche AG
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Filing: 1987-11-05
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Granted: 1989-02-21
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Expires: 2007-11-05
Abstract
Abstract A cam control connection arrangement is disclosed for influencing the control times of inlet valves of an internal combustion engine. The internal combustion engine comprises two parallel camshafts that per cylinder actuate two inlet valves and two outlet valves. The camshaft for the outlet valves, with the insertion of the cam control connection arrangement, drives the other camshaft by means of which the inlet valves are actuated.
Inventors
- 👤 Herbert Ampferer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:04
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A cam control connection arrangement for influencing the control times of valves of an internal combustion engine, comprising two devices that are arranged coaxially with respect to one another and are equipped with machine elements for transmitting rotating motions, one device being radially adjustable with respect to the other device and interacting with camshaft actuating engine valves, wherein the cam control connection arrangement is disposed between two camshafts located above the valves in a cylinder head, and is connected by means of the machine elements of the devices with corresponding machine elements of the camshafts.
Claim 2
Dependent Claim
95 words
A cam control connection arrangement for influencing the control times of valves of an internal combustion engine, comprising two devices that are arranged coaxially with respect to one another and are equipped with machine elements for transmitting rotating motions, one device being radially adjustable with respect to the other device and interacting with camshaft actuating engine valves, wherein the cam control connection arrangement is disposed between two camshafts located above the valves in a cylinder head, and is connected by means of the machine elements of the devices with corresponding machine elements of the camshafts.
Claim 3
Dependent Claim
23 words
An arrangement according to claim 1, wherein the machine elements of the devices and of the camshafts interact by means of continuous elements.
Claim 4
Dependent Claim
26 words
An arrangement according to claim 2, wherein the central longitudinal axis A--A of the devices is located on a central longitudinal plane B--B between the camshafts.
Claim 5
Dependent Claim
14 words
An arrangement according to claim 2, wherein the two continuous elements are identical parts.
Claim 6
Dependent Claim
30 words
An arrangement according to claim 2, wherein the central longitudinal axis A--A of the devices is offset (distance D) relative to a joint central transverse plane C--C of the camshaft.
Claim 7
Dependent Claim
36 words
An arrangement according to claim 5, wherein the central axis A--A of the devices is located closer to the cylinder of the internal combustion engine than is the joint central transverse plane C--C of the camshafts.
Claim 8
Dependent Claim
30 words
An arrangement according to claim 1, wherein bearing journal ends that extend coaxially to the devices are provided, said bearing journal ends being held in bearings of the cylinder head.
Claim 9
Dependent Claim
28 words
An arrangement according to claim 7, wherein each bearing has a bearing seat and a cap piece that is fastened at said bearing seat by means of screws.
Claim 10
Dependent Claim
24 words
An arrangement according to claim 7, wherein oil ducts are provided in the bearing or the bearing journal end for supplying hydraulic control oil.
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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |