Transmission control system
AssigneeHonda Motor Co., Ltd.
InventorNaoki SAKAMOTO
Life of this patent
Estimating the term…
Abstract
A transmission control system can include a main transmission. The transmission control system can also include a sub transmission that has two forward transmission gears mechanically shiftable in response to a shift operation. The transmission control system can further include a controller that shifts the transmission gears of the main transmission by activating a shift control motor, and control the clutches configured to enable and disable transmission of a rotational driving force of an engine. When one forward transmission gear of the sub transmission is shifted to the other forward transmission gear in response to the shift operation, the controller can relax engagement of the clutch if an engine speed exceeds a clutch release speed.
Claims12
A transmission control system, comprising:
- a main transmission to which a rotational driving force of an engine is transmitted via a clutch, the main transmission having a plurality of transmission gears;
- a sub transmission having at least two forward transmission gears mechanically shiftable in response to a shift operation;
- and
- a controller configured to shift the transmission gears of the main transmission by activating an actuator, the controller also configured to control the clutch configured to enable and disable transmission of the rotational driving force of the engine, wherein
- when one of the forward transmission gears of the sub transmission is shifted to another one of the forward transmission gears in response to the shift operation, the controller is configured to relax engagement of the clutch if an engine speed exceeds a clutch release speed.
A transmission control system, comprising:
- a main transmission means for transmitting rotational driving force of an engine means via a clutch means, the main transmission means having a plurality of transmission gears;
- a sub transmission means for performing gear shifting having at least two forward transmission gears mechanically shiftable in response to a shift operation;
- and
- a controller means for controlling shifting of the transmission gears of the main transmission means by activating an actuator means, the controller means configured to control the clutch means configured to enable and disable transmission of the rotational driving force of the engine means,
- wherein when one of the forward transmission gears of the sub transmission means is shifted to another one of the forward transmission gears in response to the shift operation, the controller means is configured to relax engagement of the clutch means if an engine speed exceeds a clutch release speed.
A method of controlling a transmission control system, the method comprising:
- transmitting rotational driving force of an engine via a clutch to a main transmission, the main transmission having a plurality of transmission gears;
- performing gear shifting with a sub transmission having at least two forward transmission gears mechanically shiftable in response to a shift operation;
- controlling shifting of the transmission gears of the main transmission with a controller by activating an actuator, the controller also configured to control the clutch configured to enable and disable transmission of the rotational driving force of the engine,
- wherein when one of the forward transmission gears of the sub transmission is shifted to another one of the forward transmission gears in response to the shift operation, the controller is configured to relax engagement of the clutch if an engine speed exceeds a clutch release speed.
Dependencies are inferred from the claim text.