Fuel pump assembly having reduced vapor discharge noise
US5662455A · kind A · utility
7Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/669
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pump assembly having a vapor by-pass port communicating a pump chamber with the interior of a fuel tank, which comprises a vapor introducing passage for introducing the vapor-mixed fuel discharged through the vapor by-pass port, a vapor discharge port communicating with the midway of the vapor introducing passage and opening to the interior of the fuel tank, and a bag-like closed space formed on a rear half portion of the vapor introducing passage. The vapor discharge noise is effectively reduced with the construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.