VARIABLE DISPLACEMENT LUBRICANT PUMP

摘要

Variable displacement lubricant pump (10) for an internal combustion engine provided with a housing (12) and a shiftable and basically circular control ring (14) inside the housing (12). A seal (16) is sealing a control chamber (20, 22) which is defined by the housing (12) and the control ring (14). With the control chamber (20, 22) the position of the control ring (14) is controlled. The control ring (14) pivots at a pivot axis (26) so that the control ring (14) is shifted between a low and a high pump chamber volume position. The seal (16) is provided with a stiff bar (17) and an elastomeric stripe (18) fixed to the stiff bar (17), whereby the stiff bar (17) is sliding at an inner surface of the housing (12) and whereby the elastomeric stripe (17) is attached to the outer surface of the control ring (14).