[TusharK]

BMW Motorrad could be planning to launch the CE 04 electric scooter in India. The company will be showcasing the e-scooter at Joytown 2022 in New Delhi on December 10.



The BMW CE 04 is a futuristic electric scooter. It has an aggressive-looking front apron that houses an LED headlamp, a 10.25-inch digital instrument console and a flat seat.

The CE 04 is powered by a liquid-cooled permanent-magnet synchronous motor that develops 41.4 BHP @ 4,900 rpm and 61 Nm @ 1,500 rpm. It can accelerate from 0-50 km/h in 2.6 seconds and the top speed is limited to 120 km/h.

The electric motor is powered by a lithium-ion battery pack offering a maximum range of 129 km (WMTC cycle). It can be recharged to 100% in 4 hours and 20 minutes. A fast charger can charge the battery in 1 hour and 40 minutes.

Link to Team-BHP News

[pritanshchandra]

Originally Posted by TusharK

The CE 04 is powered by a liquid-cooled permanent-magnet synchronous motor that develops 41.4 BHP @ 4,900 rpm and 61 Nm @ 1,500 rpm. It can accelerate from 0-50 km/h in 2.6 seconds and the top speed is limited to 120 km/h.

This is the first time I am seeing that an EV is developing power at certain "RPM". Is this right and I need to expand my knowledge base more or a typo?

[Brumby]

Originally Posted by pritanshchandra

This is the first time I am seeing that an EV is developing power at certain "RPM". Is this right and I need to expand my knowledge base more or a typo?

Power developed by a rotating shaft is always related to rotational speed (rpm).

Power = Torque (T) x angular speed per second (ω)

Torque is limited by the torsional strength of the shaft, so if it's an EV it doesn't mean necessarily that all the power is available at the lowest rpm.

For a certain fixed value of power, if torque is increased, rpm will reduce, or if you increase the rpm the torque will reduce.

This basic rule is used in vehicles for different applications.

On electrical vehicles, by increasing the current you can increase the torque (higher power at a lesser rpm), but it may lead to failure of the winding.

The software is programmed to limit the current to the motor for each rpm of the motor shaft.

An electrical vehicle usually doesn't have a gearbox + clutch like ICE vehicles, so the resistance offered to the motor shaft is by the wheels. If a wheel is completely stuck on a direct drive system, the software programme will not allow the current to the motor with a static shaft for a long time, because the motor windings will overheat and fail. This is similar to overheating and failure of clutch in a conventional automobile with driven wheels stuck.

In electric vehicles equipped with AC motors (commonly used in present day EVs), it's a combination of current, voltage and frequency that is regulated to decide the power at a certain rpm.

Hope that helps to understand the basic concept.

Cheers.

[pritanshchandra]

Originally Posted by Brumby

Hope that helps to understand the basic concept.

Cheers.

Thanks for the info Brumby. Very insightful indeed. I shall read more about this.

[TusharK]

BMW CE 04 electric scooter showcased in India

BMW Motorrad has showcased its futuristic-looking CE 04 electric scooter in India.



The BMW CE 04 features a striking dual-tone bodywork with a large front apron that houses an LED headlamp and a flat single-piece seat.

The CE 04 is powered by a liquid-cooled permanent-magnet synchronous motor that develops 41.4 BHP @ 4,900 rpm and 61 Nm @ 1,500 rpm. It can accelerate from 0-50 km/h in 2.6 seconds and the top speed is limited to 120 km/h.



The electric motor is powered by a lithium-ion battery pack offering a maximum range of 129 km (WMTC cycle). It can be recharged to 100% in 4 hours and 20 minutes. A fast charger can charge the battery in 1 hour and 40 minutes.

The CE 04 comes with telescopic fork suspension and a side-mounted rear mono-shock, while braking duties are handled by discs on both ends supported by ABS.

Link to Team-BHP News

[Nilesh5417]

Not sure why BMW is hell bent on making the future look so ugly! This makes even the grills on their cars look pretty.

[volkman10]

BMW CE 02 e-scooter to launch in India this year.

It could even become the most expensive electric two-wheeler on sale in India.

don’t expect it to be an affordable city runabout from the Bavarian brand. In the USA, the base CE 02 retails for USD 7,599 (roughly Rs 6.2 lakh), while the Highline trim will set you back by USD 8,474 (roughly Rs 7 lakh). Even though it is built here in India, it will still likely be a rather expensive proposition, being positioned well above the Rs 2.49 lakh TVS X. It could even become the most expensive electric two-wheeler on sale in India, but that remains to be seen.

Link: