Patent ID: 11904858
Assignee: LS MTRON LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 0:
1. A method of controlling a driving speed of an agricultural work vehicle, comprising:
confirming set gear shift information for a driving device included in an agricultural work vehicle, wherein the set gear shift information comprises:
a set number of revolutions for revolution per minute (RPM) of an engine included in the drive device; and
a set speed for a driving speed for the agricultural work vehicle;

confirming a gear shift mode for controlling the engine and a transmission which is also included in the driving device; device, wherein the gear shift mode is any one of:
a revolution number designation mode, where the RPM of the engine becomes the same as the set number of revolutions;
a speed designation mode, where the driving speed of the agricultural work vehicle becomes the same as the set speed; and
a manual mode where a driver controls the driving device through a manual operation;

when the gear shift mode is the revolution number designation mode:
confirming the set number of revolutions for RPM of the engine from the set gear shift information,
setting the set number of revolutions as a target number of revolutions, and
acquiring gear shift information for shifting gears to the target number of revolutions; and

controlling the driving device using the gear shift information acquired according to the gear shift mode;
wherein acquiring of the gear shift information for shifting the gears to the target number of revolutions includes:
setting the set number of revolutions as the target number of revolutions and deriving candidate gear shift information for shifting the gears to the target number of revolutions;
when a plurality of pieces of candidate gear shift information are derived, among a plurality of candidate speeds included in the pieces of candidate gear shift information, determining a given candidate speed of the plurality of candidate speeds having a smallest difference from the set speed as a target speed; and
determining candidate gear shift information including the target speed as the gear shift information.