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
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Abstract
A control apparatus and a control method for a transmission of an agricultural work vehicle are provided, the control apparatus including: 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.
Claims14
A method of controlling a transmission in 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 by 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 agricultural work vehicle having an operation unit including:
- a shuttle lever that is positionable by a human operator to be in one of a front-rear operation state or a neutral operation state,
- a traveling operation mechanism that is positionable by the human operator to be in one of a traveling operation state or a traveling release state, and
- a clutch operation mechanism that is positionable by the human operator to be in one of a release operation state or a fastening operation state, the method comprising:
- while the engine is running and the vehicle is not moving:
- identifying whether the shuttle lever is in the front-rear operation state in which the transmission is configured to apply the driving generated by the engine to move the agricultural work vehicle forward or rearward or in the neutral operation state in which the transmission is configured to not apply the driving generated by the engine to move the agricultural work vehicle,
- identifying whether the traveling operation mechanism is in the traveling operation state or in the traveling release state in which the agricultural work vehicle does not travel, and identifying whether the clutch operation mechanism is in:
- the release operation state in which a main clutch is to be placed in a released state for not transmitting the driving;
- or
- in the fastening operation state in which the main clutch is to be placed in a fastened, state for transmitting the driving, wherein the main clutch is a given one of the front-rear clutch and the traveling clutch;
- in response to identifying that 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:
- switching the transmission to a traveling standby mode in which the main clutch is maintained in the released state despite the shuttle lever being in the front-rear operation state and the clutch operation mechanism being in the fastening operation state, wherein a different one of the front-rear clutch and the traveling clutch than the given one is in the fastened state in the traveling standby mode.
A device for controlling a transmission in 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 by 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:
- an operation unit including:
- a shuttle lever for front-rear shifting control, positionable by a human operator to be in a front-rear operation state or a neutral operation state,
- a traveling operation mechanism for traveling control, positionable by the human operator to be in a traveling operation state or a traveling release state, and
- a clutch operation mechanism for release control of a main clutch, wherein the clutch operation mechanism is positionable by the human operator to be in a release operation state or a fastening operation state, wherein the main clutch is any one of the front-rear clutch and the traveling clutch;
- wherein the vehicle is configured, when the engine is running and based on respective states of the shuttle lever, the traveling operation mechanism, and the clutch operation mechanism to operate in one of:
- a traveling standby mode in which the agricultural work vehicle is maintained in a stopped state,
- a normal traveling mode in which the agricultural work vehicle travels to correspond to operation 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 transmission is switched to the traveling standby mode when 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 while the engine is running and the vehicle is not moving, and
- in the traveling standby mode, a remaining clutch other than the main clutch among the front-rear clutch and the traveling clutch is switched to or maintained in a fastened state for transmitting the driving and the main clutch is in a released state for not transmitting the driving despite the shuttle lever being in the front-rear operation state and the clutch operation mechanism being in the fastening operation state.
Dependencies are inferred from the claim text.