Importance

Loading Importance Indicators...

Abstract

The present invention is a solenoid-actuated fluid valve of the ball poppet type particularly suitable for use as a fuel injector actuator/timer, for which use the valve must be capable of withstanding high operating speeds and high fluid pressures for a very high cycle life, without substantial internal tolerance variation. According to the invention, the free front end of the solenoid-operated valve actuator pin has a concavity therein which distributes impact loads between the pin and the ball poppet which it engages over an extended line or area contact so as to minimize deformation of the pin and thereby minimize solenoid tolerance variation in the axial direction. Fluid captured between the ball and concavity provides squish-damping as the pin approaches the ball so as to further reduce impact deformation of the pin end. Engagement of the ball in the pin end concavity also tends to hold the ball in axial alignment with its valve seat so as to minimize eccentric wear of the valve seat.

Loading the Abstract Image...

First Claim