AndyH
Well-known member
Cool stuff! 4WD Leaf, anyone?!
http://www.sae.org/mags/AEI/9371
http://www.sae.org/mags/AEI/9371
Starting in the third quarter of 2011, MotoCzysz will offer its integrated D1g1tal Dr1ve aimed at making life easier for electric vehicle powertrain engineers. Developed in collaboration with Remy Electric Motors, the company claims it as the first model in a new category of products—integrated electric drives.
The package includes a Remy HVH 250 electric motor, integrated cooling, inverter-controller, and PCU enclosed in an aluminum shell. The cooling system is a MotoCzysz proprietary system, which is derived from the company's state-of-the-art electric racing motorcycles. Using a water/glycol mix, it is intended to be identical to the vehicle’s resident cooling system.
“You connect [D1g1tal Dr1ve] to a high voltage battery and cooling lines, along with vehicle signal connections to its integrated computer, and you are ready to run,” explained Larry Kubes, Remy's Director of Systems Engineering. Since all high-voltage components for the drive are internal to the unit, it improves overall safety of the vehicle. The only high voltage connection is to the battery.
Operating voltage is a nominal 320 volts, making it compatible with many existing high-voltage electric vehicle batteries. Peak efficiency of the integrated device is 90 percent and gear ratios will range from 6:1 to 10:1, according to Kubes.
While providing power, an in-unit computer also gives vehicle engineers control over the entire powertrain. A CAN communication bus is provided. This means the unit can manage the battery function, if needed. It also controls two drive units combined on the same axle for increased torque applications.
“A unit can be slaved to a master,” Kubes noted. A USB connection is used to input programs for specific applications. With its computer, engineers will be able to program the unit for different driving modes, such as a "sport" or "truck" mode, depending on use.
