Internal-combustion engine with hydraulic device for rotation angle adjustment of a camshaft relative to a crankshaft
US6945205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2004 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2303/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal-combustion engine with a hydraulic device (1) for rotation angle adjustment of a camshaft (2) relative to a crankshaft is provided and includes a rotor with an impeller form (7), which is rotationally fixed via a central fastener (6) to the camshaft, and a stator (4), which rotates synchronously with a drive wheel (3) driven by the crankshaft, wherein on both sides of the impeller blades of the rotor, there are pressure chambers, which are each limited by radial walls of the stator (4) and can be filled with and emptied of hydraulic fluid via a hydraulic system, wherein the hydraulic fluid is guided, on one hand, via an annular gap (13) between rotor (7) and the central fastener (6) and, on the other hand, through generally axial and radial channels into the pressure chambers. Through the use of a rotor (7) with a groove (10) running in the circumferential direction and a ring shaped intermediate element (9) adapted to the device, the internal-combustion engine can be equipped with a device (1) for adjusting the rotation angle, for which the number and/or arrangement of the axial channels for supplying hydraulic fluid do not agree with those of the camshaft of the inter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.