Title:
STEPLESS GEAR CHANGE DEVICE
Document Type and Number:
Japanese Patent JP2018150964
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a stepless gear change device which can make a vehicle travel at a high speed without using a large-capacity hydraulic pump motor.SOLUTION: A stepless gear change device comprises: a variable capacity type first hydraulic pump motor which is rotationally driven by a drive source; a fixed capacity type hydraulic motor which constitutes a closed circuit together with the first hydraulic pump motor, and is rotationally driven by pressure oil sent from the first hydraulic pump motor; a variable capacity type second hydraulic pump motor which is connected to an oil passage for connecting the first hydraulic pump motor and the hydraulic motor, and connected to the hydraulic motor; and a changeover valve which is arranged in a portion between the hydraulic motor in the oil passage and the second hydraulic pump motor, and can switch a direction of a flow of the pressure oil.SELECTED DRAWING: Figure 1
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Inventors:
TAKAHASHI YUSUKE
YAMAMOTO YASUSHI
YAMAMOTO YASUSHI
Application Number:
JP2017046004A
Publication Date:
September 27, 2018
Filing Date:
March 10, 2017
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F16H61/40; B60K17/10; F16H39/02
Domestic Patent References:
| JP2007315405A | 2007-12-06 | |||
| JPH04131568A | 1992-05-06 | |||
| JP2015052321A | 2015-03-19 | |||
| JPH10131846A | 1998-05-19 |
Attorney, Agent or Firm:
Koichi Washida