Engineering course
Regenerative Braking Engineering Lab
An engineering-level course on regenerative braking — kinetic energy recovery, the motor as a generator, brake blending and brake-by-wire, one-pedal driving calibration, and the real-world efficiency, wear and performance trade-offs of recovering energy instead of burning it as heat. Built around a regen simulator, an interactive braking system explorer, calculators, a virtual tuning lab and fault-diagnosis scenarios.
0%
0%
0 of 20 lessons complete
Progress is saved on this device as you read.
- Interactive regenerative braking simulator
- Blended braking system explorer with ABS/ESP arbitration
- Hands-on regen tuning virtual lab
- Real-world fault diagnosis scenarios
What you will learn
- Explain why kinetic energy recovery beats friction braking and quantify the loss chain
- Describe how a traction motor operates as a generator during braking
- Read a blended-braking system map and explain how the VCU arbitrates regen and friction torque
- Explain how ABS/ESP can veto or trim regen torque for wheel-slip safety
- Calibrate a one-pedal driving torque map and its safety implications
- Evaluate regen's real-world impact on range, brake wear and performance, and diagnose blended-braking faults
Course content
Module 1
Energy recovery fundamentals
Kinetic energy, the motor as a generator, loss chains, and SOC/temperature limits.
5 lessons
- Kinetic energy: what braking actually destroysEvery stop throws away energy proportional to the square of speed — regen is the attempt to catch some of it. 10 min
- The motor as a generatorThe same machine that accelerates the car can decelerate it, simply by reversing the sign of its torque. 11 min
- Why you never get 100% backEvery stage of the recovery chain loses a slice of energy to resistance, switching and friction. 10 min
- State of charge and temperature limits on regenThe battery management system, not the motor, usually decides how much regen power is allowed. 11 min
- Lab: tuning regeneration for maximum recoveryPut the theory to work — balance lift-off torque against axle grip and battery limits. 12 min
Module 2
Brake blending & brake-by-wire
Brake-by-wire architecture, pedal feel, blending logic and ABS/ESP arbitration.
5 lessons
- Brake-by-wire: decoupling the pedal from the calipersModern EVs replace the direct hydraulic link between pedal and brakes with an electronic request the VCU arbitrates. 11 min
- Manufacturing a pedal feel that isn't really thereWith no direct hydraulic link, engineers must artificially recreate the resistance a driver expects to feel. 10 min
- How the blend is actually computedThe VCU converts one deceleration request into two torque targets, updated many times a second. 12 min
- ABS, ESP and the right to veto regen torqueWheel-slip control always outranks energy recovery — the stability system can trim or kill regen instantly. 11 min
- Lab: diagnosing blended-braking complaintsWork through real symptom reports and trace them back to a root cause in the blending chain. 12 min
Module 3
One-pedal driving
Lift-off torque calibration, creep/hold behaviour, and driver-safety implications.
5 lessons
- One-pedal driving: lift-off deceleration as a featureStrong lift-off regen lets most driving be done, and most stops be completed, without touching the brake pedal. 10 min
- Creep, hold, and the last few km/hRegen torque fades out near a stop, and something else has to hold the car once it's stationary. 10 min
- Tuning the lift-off torque mapCalibration engineers shape a curve of regen torque against pedal position and speed — not a single number. 11 min
- Driver adaptation, brake lights, and following-vehicle safetyStrong lift-off deceleration raises a real question: does the car behind you know you're slowing down? 10 min
- Lab: calibrating a one-pedal driving modeBalance recovery, comfort and safety while shaping the lift-off torque curve for a target vehicle. 12 min
Module 4
Efficiency, wear and the road ahead
Real-world range impact, brake wear economics, performance-envelope regen and future development.
5 lessons
- How much range does regen actually add?The honest answer depends enormously on driving style, terrain and where the trip happens. 11 min
- The other payoff: brake pad and rotor lifeHeavy regen use means friction brakes in an EV can last many times longer than in a combustion car. 9 min
- Regen at the performance envelopeHigh-performance EVs push regen power far beyond everyday commuting, with different engineering trade-offs. 10 min
- Where regenerative braking is headedPredictive control, four-wheel regen and smarter battery interfaces are closing the remaining gaps. 10 min
- Capstone lab: engineering the full braking system trade-offBring together regen recovery, vehicle performance and efficiency into one integrated calibration exercise. 13 min