Hydropneumatic oleopneumatic vehicle suspension element
US4629169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Dec 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/1125
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oleopneumatic vehicle suspension element in particular for a heavy vehicle, comprising a piston (29) movable in a cylinder (28), a gas accumulator (26), a shock absorber (36) immersed in oil (37) filling the volume between the piston (29) and a diaphragm (27). According to the invention, the suspension element comprises a caloduct (50) connecting the shock absorber (36) to a cold source formed by a free surface (42) of the housing (33) of the suspension element (25), the caloduct (50) containing a fluid which evaporates in contact with the shock absorber (36) heated by the oil, then travels to the cold source (42) where it is condensed and returns thereafter to the shock absorber (36) where it again evaporates. This cooling device enables the temperature of the oil to be limited to the maximum acceptable value and maintains the ground clearance of the vehicle constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.