Fuel supply device of internal combusion

Abstract

A internal combustion engine fuel supply device includes a low-pressure region, a pump unit with a high-pressure pump, such that the fuel may be conveyed from the low-pressure region to the high-pressure region, a pressure storage system with high pressure perdurably is arranged between the pump unit and a injector, the pressure storage system is connected with the pump unit through a high pressure fuel pipeline with high pressure perdurably, and is connected with the injector through the high pressure fuel pipeline being in high pressure sometimes depending on injection beat, and the leakagegenerated in the high pressure fuel pipeline and / or in a connection region of the high pressure fuel pipeline with the pump unit, the pressure storage system and / or the injector, is exported through a leakage system. A leakage detection screw mechanism plays function together with the high pressure fuel pipeline with high pressure perdurably and the high pressure fuel pipeline being in high pressure sometimes, that is the leakage generated in the high pressure fuel pipeline and / or in a connection region of the high pressure fuel pipeline is guided by the leakage detection screw mechanism, such that a position where the leakage occurs is determined without disassembly of the high pressure fuel pipeline under a condition of non pressure or non build-up of a pressure.

Description

technical field [0001] The invention relates to a fuel supply device for an internal combustion engine, that is, a common rail fuel supply device. Background technique [0002] DE 101 57 135 B4 discloses an internal combustion engine, namely a marine diesel internal combustion engine operating on heavy oil, which has a plurality of cylinders, wherein each cylinder is assigned an injector of a common rail fuel supply. Fuel can be injected into each cylinder of the internal combustion engine via these injectors. The common-rail fuel supply according to DE 101 57 135 B4 comprises a pump arrangement with a plurality of high-pressure pumps in order to convey fuel from the low-pressure region of the common-rail fuel supply into its high-pressure region, wherein in the high-pressure region between the pump arrangement and Between the injectors there is a pressure accumulator system permanently under high pressure. A pressure accumulator system which is permanently under high pres...

AI Technical Summary

Problems solved by technology

Therefore although it is possible in principle to deduce that there is a leak in the fuel supply equipment, it is impossible or very costly to pinpoint the exact location of the leak or detect the source of the leak

Images