A chassis dynamometer, often shortened to “dyno,” measures the power output of a vehicle’s engine. When used with vehicles equipped with power delivery to all four wheels, it presents unique challenges and requires specialized equipment. This setup allows for accurate measurement of horsepower and torque at the wheels, accounting for drivetrain losses that occur between the engine and the road. For example, a high-performance car’s output can be precisely quantified under controlled conditions, simulating real-world driving scenarios.
Testing power at the wheels provides valuable data for tuning engine performance, diagnosing drivetrain issues, and comparing different vehicle configurations. Historically, measuring all-wheel drive vehicles on a dynamometer was complex and often inaccurate due to the difficulty of synchronizing all four rollers. Modern dynamometers employ sophisticated control systems and individual roller control, providing far more precise measurements and enabling detailed analysis of power distribution between axles. This precision makes these tests crucial for developing and refining modern high-performance vehicles, ensuring optimal traction and handling.
