Noise isolation for a fuel system
US4590964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1985 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Apr 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86348
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An electric motor driven fuel pump is mounted in a fuel tank with noise isolators to decouple the fuel pump and the fuel lines from the fuel tank and the vehicle body structure. The fuel discharge line is isolated from the pump discharge passage by an elastomeric connector, and both the fuel discharge and fuel return lines are isolated from the fuel tank by resilient elastomeric grommets. A reaction mass is connected to the discharge line and the return line and isolated from the fuel tank. The reaction mass provides a significant change in the mechanical impedance of the system and thereby absorbs a majority of the fuel pump vibratory energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.