About 201 results
Showing the first 200 results.
https://drivepatents.com/patents/979769 · 15 Jan 2014
In a diagnostic device and a diagnostic method for a motor unit of an electric vehicle, an oil degradation/others detection unit (37) is provided which is configured to detect at least any one detection item of a contamination degree, a degradation degree,...
https://drivepatents.com/patents/979764 · 15 Jan 2014
An object of the present invention is to provide a structure that does not require a knuckle on the vehicle body side while improving the rotational accuracy of an input shaft of a speed reduction unit, increasing the durability of bearings, and suppressin...
https://drivepatents.com/patents/979756 · 15 Jan 2014
An electric vehicle includes a slip ratio estimator (42) that estimates a slip ratio (ยป) based on rotational frequencies (N1, N2) of respective driven and drive wheels. The vehicle also includes a disturbance observer (43) that determines an estimate (^Te...
https://drivepatents.com/patents/979763 · 15 Jan 2014
An object of the present invention is to provide a drive device for an electric vehicle in which, by improving a supporting structure of an input shaft of a speed reduction unit, the bearing stiffness of a hub bearing is improved, while the rotational accu...
https://drivepatents.com/patents/979734 · 15 Jan 2014
A diagnostic apparatus for diagnosing a drive motor of a vehicle includes a start-up abnormality detection section to detect coil temperature, coil resistance or insulation resistance of a motor coil during a non-traveling time in which electric power supp...
https://drivepatents.com/patents/979741 · 15 Jan 2014
An object of the present invention is to achieve improvements in the rotational accuracy of the input shaft and the durability of the bearings, and suppression of rotational noise, by improving the support structure of the input shaft of the speed reductio...
https://drivepatents.com/patents/979745 · 15 Jan 2014
One object of the present invention is to provide a wheel bearing apparatus which can protect the magnetic encoder with improving the sealability of the fitting portion between the protecting cover and the outer member as well as can improve the accuracy a...
https://drivepatents.com/patents/980301 · 1 Jan 2014
An electric vehicle is proposed which can achieve early detection of abnormal short-circuit of motor coils, thus avoiding various driving problems. The electric vehicle includes a motor unit (6) configured to drive a wheel (2). The motor unit (6) includes ...
https://drivepatents.com/patents/980264 · 1 Jan 2014
An electric vehicle includes a motor unit (6) to drive a wheel (2). The electric vehicle also includes a control system that controls the motor unit (6). The control system includes an inverter (31). The electric vehicle also includes a temperature sensor ...
https://drivepatents.com/patents/980261 · 1 Jan 2014
An electric vehicle includes an inverter unit (22). The inverter unit (22) includes a torque fluctuation estimator (37) configured to estimate, according to a predefined rule, a torque fluctuation that is inclusive of fluctuations in torque attributable to...