Title:
FOUR-CYCLE INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2648688
Kind Code:
B2
Abstract:
PURPOSE: To provide a variable valve timing mechanism of a four-cycle internal combustion engine, which is excellent in high speed performance, and high in mecanical reliability.
CONSTITUTION: Two low speed rocker arms 4 and one high speed rocker arm 7 are set up in two intake and exhaust valves 19, 19. In addition, a connecting and separating shaft 16, having these three rocker arms 4 and 7 interlocked and separately operated, is built in the inner part of a rocker arm shaft 9. Moreover, two connectors 10, 11 are pierced through to ward a center shaft 26 of these shafts 9 and 16 from each surface of these rocker arms. Then, the connecting and separating shafts 16 is slid in the rocker arm shaft 19, through which each on-off timing of these two inlet and exhaust valves 19 is selected to two steps for low or high speed owing to an interaction between two-type slits 17, 18 set up on a surface of the shaft 16 and the connectors 10, 11.
Inventors:
HIKITA TAKASHI
Application Number:
JP3391892A
Publication Date:
September 03, 1997
Filing Date:
January 01, 1992
Export Citation:
Assignee:
HIKITA TAKASHI
International Classes:
F01L1/12; F01L13/00; (IPC1-7): F01L13/00; F01L1/12
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