Patent ID: 11898328
Assignee: KOMATSU LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F  B | IPC E  F

Claim 8:
9. A control method for a work vehicle, comprising:
calculating a speed ratio indicating a ratio between a rotation speed of an input shaft connected to an engine and a rotation speed of an output shaft connected to a traveling device;
outputting a clutch command for engaging a specified clutch among a plurality of clutches of a clutch mechanism, transmitting power input to the input shaft to the output shaft, based on the speed ratio; and
outputting a capacity command for changing at least one of a capacity of a first hydraulic pump motor and a capacity of a second hydraulic pump motor based on correlation data indicating a relationship between the speed ratio and the capacity of the first hydraulic pump motor and the capacity of the second hydraulic pump motor,
wherein the correlation data is set so that both the capacity of the first hydraulic pump motor and the capacity of the second hydraulic pump motor are changed with a change in the speed ratio in a predetermined speed ratio range between a first speed ratio and a second speed ratio higher than the first speed ratio.