Title:
DRIVE SYSTEM USING HYDRAULIC CIRCUIT
Document Type and Number:
Japanese Patent JP2019035489
Kind Code:
A
Abstract:
To provide a drive system capable of suppressing an influence of co-rotating torque, in a drive system controlling to switch a wet multiple disc clutch disposed in a multi-stage manner.SOLUTION: A drive system using a hydraulic circuit includes three-way switch valves 16, 26, and 36 which has a high-pressure extra pressure (extra pressure 1) path, a low-pressure extra pressure (extra pressure 2) path, and clutch fitting pressure path, and switch the pressure of hydraulic oil to be supplied to a first to third clutches 12, 22, and 32 by selecting any one of paths; and a control means 52 which supplies a working fluid of fitting pressure to any one of the plurality of clutches, supplies a working fluid of the extra pressure 1 to a clutch having a transmission mechanism on a one-step lower side than the clutch to which the working fluid of the fitting pressure is supplied, and outputs a switch signal for switching a path supplying a working fluid of the extra pressure 2 to other clutches.SELECTED DRAWING: Figure 1
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Inventors:
KANEKO YUICHIRO
Application Number:
JP2017158661A
Publication Date:
March 07, 2019
Filing Date:
August 21, 2017
Export Citation:
Assignee:
HITACHI NICO TRANS CO LTD
International Classes:
F16H61/00; B63J3/02
Attorney, Agent or Firm:
Yuichi Murakami
Hiroshi Seki
Hiroshi Seki