Patent ID: 9382693
Filing Date: 2016-07-05
CPC Classification: E02F,F15B,F16K,G05D,Y10T

Claim Text:
1. A work vehicle comprising: a work implement; a switching valve which switches a supply direction of a first hydraulic fluid which is supplied to the work implement; an operation member for operating the work implement; a pilot pressure control valve which controls pressure of a second hydraulic fluid which drives the switching valve according to an operation amount of the operation member; an electromagnetic proportional valve which is installed between the switching valve and the pilot pressure control valve; an upstream pilot flow path which connects the pilot pressure control valve and the electromagnetic proportional valve; a pressure sensor which detects pressure of the second hydraulic fluid inside the upstream pilot flow path; and a control section which selects at least one current value characteristic from among a plurality of current value characteristics on the basis of the pressure which is detected by the pressure sensor, each of the current value characteristics expressing a different correspondence relationship between a current value of a current which is output to the electromagnetic proportional valve and the pressure of the second hydraulic fluid which is output from the electromagnetic proportional valve, the control section setting the current value of the current which is output to the electromagnetic proportional valve on the basis of the at least one current value characteristic which is selected.