Protection device for limiting pump cavitation in common rail system
US10378500B2 · kind B2 · utility
0Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2016 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pressurized fuel system for an engine includes a fuel pump in a pump protection device structured to drain pressurized fuel from a common rail to provide fuel flow through the fuel pump that limits cavitation. The device includes a valve mechanism having a first valve and a second valve that are movable to an open position and a closed position respectively, in response to valve opening and valve closing rail pressures. The active pressure range of the device may be a medium pressure range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.