Fuel-vapor leakage detector
US9638145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0872
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A housing receiving a switching valve, a pressure sensor, and a pump includes a tubular portion having an inner wall provided with a support portion into which an attachment portion is inserted. The pump includes a pump portion and a motor portion which are connected to the attachment portion. The support portion receives an elastic member abutting on the attachment portion. The elastic member prevents a vibration generated due to an operation of the pump from being transmitted to the tubular portion. Since the pump is supported by a cover through a pressure detection pipe including a pressure detection passage and is supported by the tubular portion through the elastic member and the support portion, the pump prevents from vibrating by its weight. Therefore, a noise radiated out of the housing due to the vibration transmitted from the pump to the housing can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.