Back to results
US 2021/0396308 A1Published application
Control apparatus for transmission of agricultural work vehicle and control method for transmission of agricultural work vehicle
AssigneeLs Mtron Ltd.
InventorsJi Hun YU, Jin Woong LEE, Ok Shik SHIN, Bong Jin CHO
Life of this patent
Estimating the term…
Abstract
The present invention relates to a control apparatus and a control method for a transmission of an agricultural work vehicle, the control apparatus comprising: a forward/backward clutch of a forward/backward shifting unit that performs forward/backward shifting with respect to drive generated by an engine; and a drive clutch of a drive shifting unit that performs drive shifting with respect to the drive generated by the engine
Claims15
A transmission control method of an agricultural work vehicle including a front-rear clutch of a front-rear shifting part that performs front-rear shifting with respect to driving generated from an engine and a traveling clutch of a travel shifting part that performs travel shifting with respect to the driving generated by the engine, the method comprising:
- identifying an operation state of an operation unit including a shuttle lever for front-rear shifting control, a traveling operation mechanism for traveling control, and a clutch operation mechanism for release control of a main clutch among the front-rear clutch and the traveling clutch in a state in which the agricultural work vehicle, the engine of which is started, is stopped;
- in a stopped state of the agricultural work vehicle, the engine of which is started, controlling the transmission in a traveling standby mode in which the agricultural work vehicle is maintained in the stopped state depending on a result obtained by identifying the operation state of the operation unit;
- identifying an operation state of the traveling operation mechanism in the traveling standby mode;
- and
- controlling the transmission in a traveling mode in which the agricultural work vehicle travels when it is identified in the traveling standby mode that the traveling operation mechanism is in a traveling operation state in which the agricultural work vehicle travels,
- wherein the identifying of the operation state of the operation unit includes identifying whether the shuttle lever is in a front-rear operation state in which the agricultural work vehicle moves forward or rearward or in a neutral operation state in which the agricultural work vehicle does not move forward or rearward, identifying whether the traveling operation mechanism is in the traveling operation state or in a traveling release state in which the agricultural work vehicle does not travel, and identifying whether the clutch operation mechanism is in a release operation state in which the main clutch is to be released or in a fastening operation state in which the main clutch is to be fastened,
- the controlling of the transmission in the traveling standby mode includes switching the transmission to the traveling standby mode while maintaining releasing of the main clutch when it is identified that the shuttle lever is in the front-rear operation state, the traveling operation mechanism is in the traveling release state, and the clutch operation mechanism is in the fastening operation state,
- the identifying of the operation state of the traveling operation mechanism in the traveling standby mode includes identifying whether the traveling operation mechanism is in the traveling operation state or the traveling release state in the traveling standby mode, and
- the controlling of the transmission in the traveling mode includes:
- controlling the transmission in a normal traveling mode in which the agricultural work vehicle travels according to a degree of operation of an acceleration operation mechanism when it is identified that the acceleration operation mechanism of the traveling operation mechanism is in an acceleration operation state in which the agricultural work vehicle is accelerated;
- and
- controlling the transmission in an idling travel mode in which the agricultural work vehicle travels in a state in which the engine is in an idle state when it is identified that the acceleration operation mechanism is in an acceleration release state in which the agricultural work vehicle is not accelerated.
9 more elements
A transmission control device for an agricultural work vehicle including a front-rear clutch of a front-rear shifting part that performs front-rear shifting with respect to driving generated from an engine and a traveling clutch of a travel shifting part that performs travel shifting with respect to the driving generated by the engine, the device comprising:
- a reception module that receives operation information of a shuttle lever, operation information of a traveling operation mechanism, and operation information of a clutch operation mechanism from an operation unit including the shuttle lever for front-rear shifting control, the traveling operation mechanism for traveling control, and the clutch operation mechanism for release control of a main clutch among the front-rear clutch and the traveling clutch;
- an identification module that identifies, on the basis of the operation information of the shuttle lever, whether the shuttle lever is in a front-rear operation state in which the agricultural work vehicle moves forward or rearward or a neutral operation state in which the agricultural work vehicle does not move forward or rearward, identifies, on the basis of the operation information of the traveling operation mechanism, whether the traveling operation mechanism is in a traveling operation state in which the agricultural work vehicle travels or a traveling release state in which the agricultural work vehicle does not travel, and identifies, on the basis of the operation information of the clutch operation mechanism, whether the clutch operation mechanism is in a release operation state in which the main clutch is to be unfastened or a fastening operation state in which the main clutch is to be fastened;
- and
- a control module that controls, according to a result of the identification by the identification module, the transmission in any one of a traveling standby mode in which a traveling standby mode in which the agricultural work vehicle, the engine of which is started, is maintained in a stopped state, a normal traveling mode in which the agricultural work vehicle travels to correspond to operation of an acceleration operation mechanism of the traveling operation mechanism, and an idling travel mode in which the agricultural work vehicle travels in a state in which the engine is in an idle state,
- wherein the control module controls the transmission in the traveling standby mode when it is identified that the shuttle lever is in the front-rear operation state, the traveling operation mechanism is in the traveling release state, and the clutch operation mechanism is in a state in which the agricultural work vehicle, the engine of which is started, is stopped in the fastening operation state.
2 more elements
Dependencies are inferred from the claim text.