System zur Kraftstoffhochdruckerzeugung für ein in Brennkraftmaschinen eingesetztes Kraftstoffeinspritzsystem

摘要

The invention relates to a system for high-pressure production for a fuel injection system fitted in internal combustion engines. Fuel taken in from a tank (1) via a low-pressure pump (3) is supplied by way of a low-pressure pipe (12) and at least one valve (40) to a high-pressure pump (20), and a portion of the fuel flow is diverted into the return pipe (13) at or upstream of the high-pressure pump (20) from the low-pressure pipe (12). In the low-pressure pipe (12) an electrically-controlled flow regulator valve (40) is fitted between the low-pressure pump (3) and the high-pressure pump (20). The valve (40) divides the fuel flow delivered. One part is conveyed to the high-pressure pump (20) and the remainder is released into the return pipe (13). The flow regulator valve (40) requires a small amount of space, only has a few connections and is easy to handle.