Longitudinally adjustable connecting rod with mass-optimized control slide
US11525392B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 8, 2019 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Oct 8, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/524
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A longitudinally adjustable connecting rod with a hydraulic control device for effecting a change in the effective length of the connecting rod is provided. The hydraulic control device comprises a hydraulic control valve which comprises a hydraulically actuatable control slide that is preloaded by way of a control slide spring, and two outlet valves which can be actuated by the control slide by way of two control contours arranged at a distance from one another. The control slide comprises a low-pressure section with a low-pressure piston for hydraulically actuating the control slide. For optimizing the control slide for such a longitudinally adjustable connecting rod, the two control contours are arranged together in a high-pressure section of the control slide which is arranged on one side of the low-pressure section and separated therefrom by way of a sealing section disposed therebetween. The control contours each comprise a closure region with control cams and an opening region adjoining the control cams. The closure region has a smaller cross-section than the opening region. The mass of the section of the control slide disposed between the two closure regions corresponds at …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.