Fuel supply apparatus of internal combustion engine and control device of fuel supply apparatus
US8511284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Apr 20, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel supply apparatus of an internal combustion engine is provided which can discharge air bubbles or air from within fuel supply paths while increasing pressure within a common rail up to a predetermined pressure level before a start of the internal combustion engine, can reduce a period of time of cranking from when an ignition switch is switched on and which can reduce noise that occurs when the air bubbles or air are being discharged.The fuel supply apparatus is provided with a flow rate control valve that adjusts a flow rate of fuel supplied to the common rail and a pressure control valve that reduces the pressure within the common rail. The fuel supply apparatus is further provided with: a pre-start drive control portion that performs a pre-start drive of an electromagnetic low pressure pump before the start of the internal combustion engine; a flow rate control valve control portion that maintains the flow rate control valve in an open state while the pre-start drive is being performed; and a pressure control valve control portion that maintains the pressure control valve in a closed state and performs a control that opens the pressure control valve at least once for a sho…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.