Control apparatus for transmission mechanism, transmission, vehicle provided therewith, method of controlling the transmission mechanism, and method of estimating heat value of electric motor in the transmission mechanism
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorKazutoshi Ishioka
Life of this patent
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Abstract
A motorcycle has a transmission including a transmission mechanism and an electronic control unit (ECU). The transmission mechanism includes a crankshaft as an input shaft, a driven shaft as an output shaft and an electric motor. The electric motor changes continuously the transmission ratio between the crankshaft and the driven shaft. The ECU estimates the heat value of the motor from a rate of change in the transmission ratio. When the estimate heat value reaches or exceeds a specified value the electric motor is restricted or stopped.
Claims19
A control apparatus for a transmission mechanism, the transmission mechanism comprising an electric motor for changing a transmission ratio between input and output shafts,
- wherein the control apparatus estimates a heat value of the electric motor from a rate of change in the transmission ratio.
A transmission comprising:
- a transmission mechanism comprising an electric motor for changing a transmission ratio between input and output shafts, and
- a control section for estimating a heat value of the electric motor based on the rate of change in the transmission ratio.
A control method for a transmission mechanism comprising an electric motor for changing a transmission ratio between input and output shafts, the control method comprising:
- estimating a heat value of the electric motor based on a rate of change in the transmission ratio.
A method of estimating a heat value of an electric motor in a transmission mechanism comprising an electric motor for changing a transmission ratio between input and output shafts, the method comprising:
- estimating the heat value of the electric motor based on a rate of change in the transmission ratio.
Dependencies are inferred from the claim text.