JeremyW
Well-known member
As a few of you know I've been bugging everyone I've met at Nissan for the coveted "Nismo VCM" upgrade that is ONLY available in Japan. Since it's very very very restricted (it must be done in Japan on a '13+ leaf, etc etc) by Nissan I've begun to explore different avenues on how to get the equivalent performance. What follows is what I would call "Stage 1" which would be a Man-in-the-Middle technique of putting a box in between the CAN lines of the inverter and the rest of the bus. The box would consist of two AVR-CAN devices running a 1mb/s serial link between them. One side interprates the 1DC requested torque messages, adjusts it as needed, corrects the CRC byte(s) to make it a valid message, and finally sends it to the other side which turns it back into a CAN message for the inverter to see.
That's the theory anyway. Over the next few months I will try to see if it works. From what I've read in the service manual, the inverter will dial itself back if it or the motor gets too hot (there's 5 temperature sensors within the inverter on the 2011-2012 models).
Warning: this may be an easy way to break things like half shafts, gears, the motor, other cars or property, my own car or property, or worse. This is *highly* experimental.
That's the theory anyway. Over the next few months I will try to see if it works. From what I've read in the service manual, the inverter will dial itself back if it or the motor gets too hot (there's 5 temperature sensors within the inverter on the 2011-2012 models).
Warning: this may be an easy way to break things like half shafts, gears, the motor, other cars or property, my own car or property, or worse. This is *highly* experimental.