Hydraulic valve lifter mechanism for internal combustion engine

Details Hydraulic valve lifter mechanism for internal combustion engine Hydraulic valve lifter mechanism for internal combustion engine

1978-09-20

1980-08-26

Lazarus, Ronald H.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9016, 123 9057, F01L 134, F01L 124

Patent

active

042189950

ABSTRACT:
A hollow cylinder is slidably received in a bore formed through an engine block with its closed end in contact with a lobed cam mounted on a camshaft, and a piston connected to a push rod is received in an end portion of the bore. A plunger disposed in the bore partly intrudes into the cylinder so as to define a first oil pressure chamber in the cylinder and a second oil pressure chamber between the plunger and the piston. When oil pressure applied to the first chamber is decreased as the engine speed lowers, the plunger moves toward the first chamber to allow the second chamber to communicate with an oil-reserving chamber through a hole. The amount of valve lift in a medium oil pressure range depends on the degree of closing of this hole by the plunger which is moved together with the cylinder by the rotating cam.

REFERENCES:
patent: 2393793 (1946-01-01), Meth
patent: 2484109 (1949-10-01), Meinecke
patent: 3385274 (1968-05-01), Shunta et al.
patent: 3439661 (1969-04-01), Weiler
patent: 3490423 (1970-01-01), Shunta et al.
patent: 3518976 (1970-07-01), Thuesen
patent: 3742921 (1973-07-01), Rendine
patent: 3817228 (1974-06-01), Bywater
patent: 4020806 (1977-05-01), Aoyama et al.
patent: 4153016 (1979-05-01), Hausknecht

Affiliated with

Also associated with

Rating

Hydraulic valve lifter mechanism for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic valve lifter mechanism for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic valve lifter mechanism for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1301525