Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1998-05-08
1999-05-18
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Tappet
2988803, 2988843, 72414, F01L1/14
Patent
active
059041234
ABSTRACT:
A mechanical valve tappet for timing the valves of an internal combustion engine comprising a cup-shaped housing (1), consisting of a hollow cylindrical wall (2) closed at one end by a bottom (3) which is exteriorly contacted by a control cam (6), while on the inner surface of the bottom (3), there is arranged an elevation (4) which cooperates with the end of a valve stem of a gas exchange valve (5) and while the other dimensions of the valve tappet remain unchanged, the elevation is made in each case with a different axial extent whereby the valve clearance can be adjusted without the adjusting elements hitherto required by the prior art by inserting the entire cup-shaped housing (1) having the appropriate elevation (4) into the cylinder head.
REFERENCES:
patent: 4829950 (1989-05-01), Kanamaru et al.
patent: 5537744 (1996-07-01), Hirose
patent: 5706772 (1998-01-01), Hara
patent: 5724734 (1998-03-01), Hirose et al.
JP 6-17609 A., Patent Abstracts of Japan, M-1596, Apr. 25, 1994, vol. 18, No. 224.
J 08042310 A., Patent Abstracts of Japan, Haruki, Direct Acting Valve . . . Engine Feb. 13, 1996.
Ammon Reinhard
Kamm Robert
Ina Walzlager Schaeffler OHG
Lo Weilun
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