Valve train for internal combustion engine

Details Valve train for internal combustion engine Valve train for internal combustion engine

1996-10-16

1997-10-07

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123 904, 123 9042, 123 9048, F01L 114, F01L 118

Patent

active

056736606

ABSTRACT:
A valve train for internal combustion engines utilizing an inverted bucket tappet with a pivot structure operatively disposed between the tappet and the end of the valve stem allowing the valves to be angulated with respect to each other and to the axis of the cylinder in both the transversal and the horizontal planes of the engine. Accordingly on a multi-valve engine, the valves extend radially from the associated combustion chamber to open and increase space in the center of the cylinder head for spark plugs, injectors, or pre-combustion chambers and so that the combustion chamber can be designed with a hemispherical surface, with tangentially disposed valve heads. The construction allows the use of large valves in conjunction with stronger, better-cooled valve seats and bridges. The tappets can be actuated conventionally by direct-acting overhead camshafts or by rocker arms and "T" bridges.

REFERENCES:
patent: 5080057 (1992-01-01), Batzill et al.
patent: 5159906 (1992-11-01), Fontichiaro et al.
patent: 5347964 (1994-09-01), Reguiero
patent: 5392744 (1995-02-01), Regueiro
patent: 5535710 (1996-07-01), Zoschke et al.
"Automotive Handbook", 2nd Edition.COPYRGT. Robert Bosch GmbH, pp. 318-319. Sep. 1986.
Philip H. Smith, "Valve Mechanisms for High-Speed Engines: Their Design and Development", pp. 64-69.
"Automotive Engineering", Jan. 1995, pp. 23-25.
"MTU Mgazine", Jul.-Aug. 1993 edition, Die Neuen Vierventil-Dieselmotoren von Mercedes-Benz, p. 329.

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