Patent ID: 9394891
Filing Date: 2016-07-19
CPC Classification: F04B,F04C

Claim Text:
1. A variable displacement lubricant pump configured to be coupled to and driven by an internal combustion engine for pumping a pressurized lubricant to the internal combustion engine, the variable displacement lubricant pump comprising: a control ring configured to be shiftable; a pump rotor comprising vanes configured to be radially slidable and to rotate in the control ring; a pump outlet port; a pressure control system configured to control a discharge pressure of the pressurized lubricant, the pressure control system comprising: a preload control arrangement configured to control a preload of the control spring, the preload control arrangement comprising: a preload cylinder outlet; a lubricant tank; and a preload control discharge conduit, wherein, the preload cylinder outlet is connected to the lubricant tank via the preload control discharge conduit, and the preload control valve is arranged so as to be in line with the preload control discharge conduit.