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Patent Searching and Data


Title:
WORK MACHINE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/209172
Kind Code:
A1
Abstract:
A hydrostatic transmission (HST) circuit (10) has a hydraulic pump (2) that converts the driving force of an engine (4) to hydraulic energy, and a hydraulic motor (3) that converts the hydraulic energy converted by the hydraulic pump (2) to driving energy. A pressure sensor (11a, 11b) detects the oil pressure inside the HST circuit (10). A variable charge pump (1) refills the HST circuit (10) with oil. A controller (6) controls the capacity of the variable charge pump (1) on the basis of the oil pressure inside the HST circuit (10) detected by the pressure sensor (11a, 11b).

Inventors:
NAKAJIMA AKIRA (JP)
KAMIKAWA SHINOBU (JP)
Application Number:
PCT/JP2020/015188
Publication Date:
October 15, 2020
Filing Date:
April 02, 2020
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F9/22
Foreign References:
JPH11280637A1999-10-15
JP2016035321A2016-03-17
JP2006336673A2006-12-14
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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