Abstract: A hydraulic valve lifter for use in an internal combustion engine, comprises an inverted cup-like body, an inverted cup-like plunger housed within the body, a high pressure chamber defined between the body and the plunger, and an oil passage through which an oil is fed to the high pressure chamber. At least one oil discharge hole is defined in the plunger and extends from the oil passage to open to a valve stem so as to lubricate between the valve stem and a valve guide.
Type:
Grant
Filed:
July 24, 1990
Date of Patent:
April 9, 1991
Assignee:
Otai Tekko Kabushiki Kaisha and Koyo Seiko Co., Ltd.