Hydraulic engine mount with self-pumping air bladder
US4828234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic mount assembly includes a pair of mounting members connected to each other through a hollow elastomeric body. The body is closed by a resilient diaphragm so as to form a cavity for hydraulic damping fluid. A partition or plate is provided to divide the fluid filled cavity into two distinct chambers and the partition may include a decoupler. A primary chamber is formed between the partition and the interior wall of the hollow body. An expandable pneumatic bladder is mounted within the primary chamber. A secondary chamber is formed between the partition and the interior wall of the diaphragm. A pumping chamber is formed by the diaphragm and a sealed base plate. Hydraulic fluid passes through the orifice track between the two chambers providing the damping action. As the fluid enters the secondary chamber, the diaphragm expands. Expansion/contraction of the diaphragm within the sealed pumping chamber creates a supply of positive/negative pressure air. A control circuit governs flow of air between the pump and the pneumatic bladder, thereby selectively modulating the overall damping and dynamic rate characteristics in response to sensed vehicle operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.