Patent ID: 6439186
Filing Date: 2002-08-27
Classification: F01L

Abstract:
A hydraulically actuated valve lifter, said lifter comprising:a body having a first oil flow passageway through a wall thereof and accessing a first internal cavity defined within said lifter body; a valve lifter plunger contained for reciprocal movement within said first internal cavity, said plunger including walls and having a second oil flow passageway extending through said plunger walls into a second internal cavity defined within said plunger, a constricted oil flow passageway defined between an external surface of said lifter plunger and an internal surface of said lifter body, said constricted passageway connecting between said first oil flow passageway and said second oil flow passageway, and, an oil deflector insert contained within said second internal cavity, said oil deflector including an upper portion sealingly engaged to inner surfaces of said plunger to direct oil within said plunger towards an upper end of said plunger, said upper portion further including an oil supply hole for enabling oil to pass into a lower portion of said plunger and into a lower portion of said second internal cavity.