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Patent Searching and Data


Title:
HYDRAULIC DRIVE DEVICE FOR CARGO VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/092505
Kind Code:
A1
Abstract:
According to the present invention, a command rotational speed deceleration that is the deceleration of a command rotational speed that is set by a command rotational speed setting unit is greater than an actual rotational speed deceleration that is the deceleration of the actual rotational speed of an electric motor as caused by control output from a motor driver. Because the actual rotational speed deceleration is lower than the command rotational speed deceleration, the actual rotational speed can be reduced gradually, which makes it possible for the reduction of a cylinder flow rate to be suppressed gradually in conjunction with the reduction of the actual rotational speed. Because the command rotational speed deceleration is higher than the actual rotational speed deceleration, the command rotational speed can be reduced quickly, which makes it possible for the actual rotational speed to reach the command rotational speed quickly and for the actual rotational speed to be kept from increasing, which in turn makes it possible for the cylinder flow rate to be kept from increasing.

Inventors:
UEDA Yuki (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
Application Number:
JP2017/037952
Publication Date:
May 24, 2018
Filing Date:
October 20, 2017
Export Citation:
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Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI (2-1 Toyoda-cho, kariya-shi Aichi, 71, 〒4488671, JP)
International Classes:
F15B11/04; B66F9/22
Foreign References:
JPS49120351A1974-11-18
JP2013133196A2013-07-08
Attorney, Agent or Firm:
ITO Masaki (Inc. 4-15, Hirokoji, Kariya-sh, Aichi 44, 〒4480844, JP)
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