Patent ID: 9689776
Date: 2017-06-27
CPC Classifications: G01M

Claim:
1. An apparatus, comprising: a piston bore, wherein said piston bore exhibits a longitudinal axis; a piston, including a piston head and a piston shaft, wherein said piston is axially displace-able within said piston bore along said longitudinal axis, wherein said piston bore and a first surface of said piston head form a first working volume and displacement of said piston alters said first working volume; a first plurality of injectors coupled to said first working volume and a first common rail, wherein said first plurality of injectors are configured to inject a hydraulic fluid from said common rail into said first working volume; said first common rail configured to store said hydraulic fluid at an elevated pressure of 1,000 bar or greater; a pump coupled to said first common rail configured to maintain said hydraulic fluid in said common rail at said elevated pressure; and a flow path between said first working volume and a reservoir for said hydraulic fluid.