Pump unit and method of operating the same
US10451047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | May 8, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D15/0072
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present application relates to a pump unit for a fuel injection system. The pump unit has a low pressure fuel supply line and a high pressure fuel outlet. A pumping chamber having a plunger is operable to perform a pumping cycle comprising a pumping stroke and a filling stroke. The pump unit also includes an inlet valve having an inlet valve member movable between an open position for permitting the supply of fuel to the pumping chamber from the low pressure fuel supply line and a closed position for inhibiting the supply of fuel from the pumping chamber to the low pressure supply line. An outlet valve is provided in the high pressure fuel outlet. The pump unit also includes a means for latching the inlet valve member in its open position. The present application also relates to a method of operating a pump unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.