| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cold-formed plunger blank for reducing the time and amount of material required to assemble a hydraulic lash adjuster. <P>SOLUTION: The cold-formed flat top plunger blank is provided for use in the hydraulic lash adjuster. An end wall at a first end of the plunger body defines a flat top surface that is cold-formed to final dimensions or net shape. The flat top surface at the first end of the plunger body is configured to engage a flat surface within the mating bore of an engine cylinder head. By configuring the plunger body to have a flat top surface that engages a flat surface disposed within the mating bore of the engine cylinder head, the force applied to the engine block by the lash adjuster is distributed more evenly, minimizing wear. The external flat top plunger is a unitary component cold-formed to near net shape, including cold-forming to final dimensions the flat top surface and a counterbore. <P>COPYRIGHT: (C)2012,JPO&INPIT |
