PRESSURE CONTROL VALVE STRUCTURE AND SET LOAD ADJUSTING METHOD IN THE PRESSURE CONTROL VALVE

摘要

PURPOSE:To provide a small low cost pressure control valve structure and a set load adjusting method by which a set load can be adjusted simply and the number of parts can be reduced in a pressure adjusting valve applied to a fuel injection device of an internal combustion engine. CONSTITUTION:There are provided a pressure control valve structure by which a negative pressure introducing port member 35 having a seat surface of a control spring 37 is inserted/fixed by passing penetratingly through a cover 34 and a set load adjusting method by which a set load of the control spring 37 is adjusted by dislocating the negative pressure introducing port member 35 after respective parts are inlet and the negative pressure introducing port member 35 is fixed to the cover 34 after it is adjusted.