Fuel supply system
US6234151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 29, 2000 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Feb 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a fuel supply system for diesel engines, which comprises PA1 a fluidic series connection of a fuel pump (5) sucking out of a tank (1), of a fuel filter (7) and of a high-pressure pump (9), PA1 a parallel connection, located downstream of the high-pressure outlet (14) of the high-pressure pump (9), of a plurality of injectors (16) or injection nozzles and of an electrically controllable high-pressure regulating valve (17) with a return line (20), said parallel connection being capable of being fed by the high-pressure pump with a fuel stream under a pressure which is variable, as required, by the activation of the high-pressure regulating valve, PA1 at least one return line (18) for recirculating a fuel excess from the high-pressure regulating valve and/or the injectors into the tank (1), and PA1 at least one cooler (19, 21) arranged in a return line, according to the invention a first return line (18) is located downstream of the injectors (16) and a second return line (20) downstream of the high-pressure regulating valve (17), and at least the second return line (20) is connected to a cooler (21) which is connected on the outlet side to the connection between the fuel pump (5) …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.