Fuel supply system

Abstract

The invention relates to a fuel supply system and particularly provides a common-rail fuel supply system applied to the internal combustion engine of a marine diesel engine, which comprises a low-pressure area. The low-pressure area is provided with a pumping device for pumping the fuel from the low-pressure area to a high-pressure area. Inside the high-pressure area between the pumping device and an ejector applied to a cylinder, an accumulation system is permanently arranged. The accumulation system comprises an accumulation unit coupled through a high-pressure pipeline. The accumulation system is connected with the pumping device through at least one high-pressure pipeline permanently arranged in a high-pressure condition. The accumulation system is connected with the ejector through an ejection loop by means of a high-pressure pipeline occasionally arranged in a high-pressure condition. A pressure limiting valve and a purge valve are interacted with one accumulation unit of the accumulation system. Meanwhile, the accumulation unit, in interaction with the pressure limiting valve and the purge valve, is provided with a valve block. The valve block directly acts on the accumulation unit and is used for accommodating the pressure limiting valve and the purge valve.

Description

technical field [0001] The invention relates to a fuel supply system for an internal combustion engine according to the preamble of claim 1 . The invention also relates to the assembly of a pressure accumulator unit, a pressure limiting valve and a flushing valve of such a fuel supply system. Background technique [0002] figure 1 The basic configuration of a common rail fuel supply system for an internal combustion engine known in the prior art is shown. Said construction is known from DE10157135B4. therefore, figure 1 The common rail fuel supply system comprises at least one injector 1 each for each cylinder of the internal combustion engine. Fuel can be injected into the individual cylinders of the internal combustion engine via the injector 1 . The common rail fuel supply system also includes a pumping device 3 comprising at least one low-pressure pump 5, at least one high-pressure pump 2 and a high-pressure pump accumulator unit 8 to deliver fuel from the low-press...

AI Technical Summary

Problems solved by technology

[0004] The piping connection of the pressure limiting valve 13 and the flushing valve 14 to the pressure accumulator unit 9 via the high pressure lines 15 , 16 is disadvantageous because additional sealing points are created due to this

In addition, the piping connection of the above-mentioned components of the fuel supply system results in a structurally complex fuel supply system requiring a lot of installation space

Access to individual components of the fuel supply system is more difficult due to pipe connections

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