Dyno Rolling Road Testing
A car’s driven wheels are positioned on large, sensor-equipped rollers that simulate various road conditions—such as acceleration and hill climbing—allowing for precise tuning, diagnostics, and data collection, including air/fuel ratios, boost, and RPM.
Key Features and Functions:
- Performance Measurement: Measures wheel horsepower (WHP), torque, and calculates engine (flywheel) power.
- Components: Consists of rollers, eddy current retarders (to apply load), and sophisticated software to monitor data.
- Testing Process: Vehicles are typically strapped down and run in a high gear (e.g., 4th or 5th) from low RPM to the redline to gather data.
- Safety and Diagnostics: Enables safe, high-speed testing without requiring public roads, and helps identify issues like ignition timing faults.
- Types: Available as 2WD (two-wheel drive), capable of handling over 1000bhp.
- Tuning Capability: Used for ECU remapping, carburetor adjustment, and verifying power gains from modifications.
During a session, the system may record “run-down losses” to calculate drivetrain losses between the wheels and the engine. Common services include “power runs” (measuring max output) and full mapping sessions.
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