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1. (WO2018197327) PROPORTIONAL SPOOL VALVE FOR ADJUSTING THE DISPLACED VOLUME OF A DISPLACEMENT PUMP, ASSEMBLY METHOD AND SYSTEM

Pub. No.:    WO/2018/197327    International Application No.:    PCT/EP2018/060019
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 20 01:59:59 CEST 2018
IPC: F16K 31/06
F16K 27/04
Applicants: ETO MAGNETIC GMBH
Inventors: FEINDLER, Michael
NIEWEGLOWSKI, Marcin
Title: PROPORTIONAL SPOOL VALVE FOR ADJUSTING THE DISPLACED VOLUME OF A DISPLACEMENT PUMP, ASSEMBLY METHOD AND SYSTEM
Abstract:
The invention relates to a proportional spool valve (1) for adjusting a displaced volume of a displacement pump, in particular of an oil pump in a motor vehicle, comprising a valve housing (2) and a valve spool (3) which is slidably mounted along an adjustment axis (V) in the valve housing (2), which valve spool can slide against the spring force of a valve spring (6) supported on a spring holder (7) which is axially fixed relative to the valve housing (2) by energizing an electrical coil arrangement (10), wherein both the preferably single-piece spring holder (7) and the valve housing (2) are made from plastic and the spring holder (7) is welded to the valve housing (2) to form an integral welded connection (9).