Title:
VARIABLE VALVE TIMING LIFT DEVICE FOR FOUR CYCLE ENGINE
Document Type and Number:
Japanese Patent JP3200999
Kind Code:
B2
Abstract:
PURPOSE: To change over a push plate and push pieces by oil pressure according to the number of revolution, and make them abut on intake/exhaust valves so as to change lift and a timing by providing cams for intermediate/low speed and high speed, and also providing an intermediate/low speed slider provided with the push plate, and a high speed slider provided with the push pieces.
CONSTITUTION: An intermediate/low speed cam 20 and high speed cams 21, 22 are provided on a cam shaft 23, and also an intermediate/low speed slider 24 provided with a push plate 25 and high speed sliders 26 enclosing push pieces 28 are provided. Oil in a high pressure oil chamber 56 is discharged by action of a switch valve at the time of intermediate/low speed rotation of an engine, and the push pieces 28 retreat so as to operate intake/exhaust valves 11, 12 through the slider 24 by the intermediate/low speed cam 20. The push pieces 28 abut on a lift plate 42 by oil pressure in the high pressure oil chamber 56 by action of the switch valve at the time of high speed rotation so as to operate the intake/exhaust valves 11, 12 through the slider 26 by the high speed cams 21, 22.
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Inventors:
Yonosuke Yokogi
Application Number:
JP23851992A
Publication Date:
August 20, 2001
Filing Date:
September 07, 1992
Export Citation:
Assignee:
Suzuki Motor Corporation
International Classes:
F01L1/26; F01L13/00; F02D13/02; (IPC1-7): F01L13/00; F01L1/26
Domestic Patent References:
| JP494405A | ||||
| JP240905U |
Attorney, Agent or Firm:
Hisano Hatano (1 person outside)