GM awards A123 Systems production contract for batteries for future EVs
Rice University engineers reverse ubiquitous metabolic pathway to enable speedy microbial production of fuels, chemicals

Vocis to demonstrate 2-speed EV transmission at LCV2011

UK transmission engineering and control specialist Vocis will give its twin speed electric vehicle transmission (earlier post) its first public demonstration at LCV2011 (the Low Carbon Vehicle show) on 7-8 September at Rockingham Motor Speedway in the UK. The new transmission will be demonstrated in a prototype electric minibus developed with powertrain supplier Zytek.

Vocis 2-spd EV
Vocis 2-speed transmission. Click to enlarge.

The heart of the system is a novel gearshifting concept, based on proven twin-shaft principles, that allows the ratio to be changed with no break in torque delivery. New high-precision electromechanical actuators are being developed, working at traction battery voltage (typically 300V) to allow improved efficiency.

Vocis will be exhibiting the latest developments in some of its other technologies too, including low-cost data logging to provide a cost-effective solution for the monitoring of large fleets. The company will also show its rapid prototyping tool for control system development, now in small batch manufacture.


Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)