Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Reprogramming a Prius to Keep the electric motor at maximum torque.

Angel And The Wolf · 01-24-2018, 01:33 PM

My 2011 Prius Hybrid uses two electric motors to drive the car through a planetary gear set, By varying the difference in speed between one motor and the other, the proper output speed is achieved to the drive axles.

I know that an electric motor's torque is highest at stall, and decreased as the motor's speed increases.

Does anyone have an idea on how to regulate the ratio between the two electric motors so that motor speed is kept low, and torque high at any vehicle speed?

Is this already done by Toyota?

I know the idea would be more useful in a purely electric car, but could benefits be recognized in a hybrid as well?

What may be the pitfalls?

01-24-2018, 01:33 PM	#1 (permalink)
Angel And The Wolf Master EcoModder Join Date: Nov 2013 Location: Texas Posts: 678 Thanks: 20 Thanked 146 Times in 130 Posts	Reprogramming a Prius to Keep the electric motor at maximum torque. My 2011 Prius Hybrid uses two electric motors to drive the car through a planetary gear set, By varying the difference in speed between one motor and the other, the proper output speed is achieved to the drive axles. I know that an electric motor's torque is highest at stall, and decreased as the motor's speed increases. Does anyone have an idea on how to regulate the ratio between the two electric motors so that motor speed is kept low, and torque high at any vehicle speed? Is this already done by Toyota? I know the idea would be more useful in a purely electric car, but could benefits be recognized in a hybrid as well? What may be the pitfalls?