Two Wheeler Chassis Dynamometer

EV-TWO WHEELER DYNAMOMETER

Chassis dynamometers are also known as "rolling roads." The EV two-wheeler is mounted on rollers and can be tested under controlled conditions. These systems are used for a variety of tests, including performance, durability, and drive cycle simulation.

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1. General Description

A precision-engineered twin-roller electric motorcycle chassis dynamometer designed for performance testing, efficiency analysis, endurance, and calibration of electric two-wheelers.
It measures wheel power, torque, speed, energy consumption, and regenerative braking performance.

2. Mechanical System

Parameter	Specification
Roller Type	Twin Roller Setup (each wheel supported by two rollers)
Roller Diameter	300–350 mm
Roller Material	Alloy steel, hard-chrome plated, dynamically balanced
Track Width Range	200–400 mm
Wheel Base Range	1000–1600 mm
Max Wheel Load	500 kg
Surface Coating	Knurled / anti-slip surface
Mounting Type	Floor-mounted pit or overground frame
Drive Coupling	Direct roller coupling with torque transducer

3. Power Absorption Unit (PAU)

Parameter	Specification
Type	Eddy Current Brake / AC Regenerative Motor
Power Capacity	Up to 100 kW continuous
Torque Capacity	Up to 400 Nm
Max Speed	200 km/h wheel equivalent
Control Mode	Torque, Speed, Power, Road Load Simulation
Cooling	Air cooled with integrated blower or forced ventilation

4. Measurement Parameters

Parameter	Description
Speed	0–200 km/h, accuracy ±0.2% FS
Torque	±0.2% FS using in-line torque sensor
Power (Wheel / Corrected)	Real-time calculated in kW / hp
Voltage / Current (EV)	DC link monitoring (optional)
Battery SOC / Efficiency	For EV analysis
Energy Consumption	kWh/km and regenerative recovery
Distance & Time	Real-time logging

5. Sensors & Instrumentation

Wheel speed encoders (incremental optical type)
Torque sensor (strain gauge type)
Temperature sensors (roller, ambient, motor)
Optional: battery voltage/current sensors, CAN interface

6. Control & Data System

Parameter	Specification
Control Panel	Industrial-grade cabinet with touchscreen HMI and emergency stop
Software Interface	PC-based software with live data dashboard
Display Parameters	Speed, torque, power, energy, temperature, graph plots
Data Acquisition Rate	1–10 kHz
Report Generation	Automatic PDF/CSV report export
Communication	Ethernet / USB / CAN

7. Cooling & Ventilation

Parameter	Specification
Blower Capacity	5–10 kW, variable speed
Air Velocity at Vehicle Front	Up to 80 km/h simulation
Direction Control	Adjustable ducting or swing mount
Purpose	Simulates road windage and motor cooling

8. Safety Features

Emergency stop (E-stop) at console and frame
Over-speed & over-torque protection
Roller interlock safety covers
Grounded electrical system with MCB protection
Automatic brake on power failure

9. Power Requirements

Parameter	Specification
Supply Voltage	3 Phase, 415 V ±10%, 50 Hz
Control Supply	230 V AC
Total Power Consumption	10–15 kW depending on test load

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