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Title:
HYDRAULIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2015083863
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic transmission.SOLUTION: A hydraulic transmission includes: a variable displacement pump; and a variable displacement motor. At least either the variable displacement pump or the variable displacement motor includes a cylinder having a valve that is controllable in each cycle of a cylinder working volume so as to determine a working-fluid displacement volume of the cylinder. The transmission includes a controller that determines the displacement volume of the pump and the motor. The controller controls the displacement volume of the pump and/or the motor so as to prevent the pump and/or the motor from generating vibration at a frequency matching a resonant frequency of part of a machine that is part of the hydraulic transmission or that is mechanically connected to the hydraulic transmission, and generated by a pattern of a working/non-working cycle of the cylinder working volume, in light of a rotational velocity of a rotary shaft of the pump and/or the motor.

Inventors:
OHIRA TAKEO
ICHINOSE HIDEKAZU
NIALL CALDWELL
Application Number:
JP2013227386A
Publication Date:
April 30, 2015
Filing Date:
October 31, 2013
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
ARTEMIS INTELLIGENT POWER LTD
International Classes:
F16H61/4183; F03C1/053; F04B1/04
Domestic Patent References:
JP2012523515A2012-10-04
JP2013155694A2013-08-15
JP2013509518A2013-03-14
Foreign References:
WO2013114437A12013-08-08
WO2013005259A22013-01-10
US20130195704A12013-08-01
Attorney, Agent or Firm:
Seishin ip patent business corporation