초록

The main advantages of this arrangement are the relief of the fuel pump, the heating of the fuel filter which commences near the starting time and particularly thorough cleaning of the fuel stream through the high-pressure pump due to circulation via the filter.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fuel supply system for diesel engines, comprisinga fluidic series connection of a fuel pump (5) sucking out of a tank (1), a fuel filter (7) and a high-pressure pump (9),a parallel connection, located downstream of the high-pressure outlet (14) of the high-pressure pu

[ What is claimed is:] [1.]1. A fuel supply system for diesel engines, comprisinga fluidic series connection of a fuel pump (5) sucking out of a tank (1), a fuel filter (7) and a high-pressure pump (9),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,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),at least one cooler (19, 21) arranged in a return line, rein 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 wherein at least the second return line (20) is connected to a cooler (21) which is connected on its outlet side to the connection between the fuel pump (5) and the high-pressure pump (9).