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Roltamax's roller bed tractor dynamometer is a specialized test bench with large rollers that simulate driving conditions, measuring a tractor's power (PTO, drawbar), fuel/AdBlue consumption, emissions, torque, and speed under controlled loads for performance validation, design, and quality assurance, using systems like the DLG PowerMix to provide accurate data for development and compliance with standards like Bharat Stage (CEV/TREM)
Key Functions & Components
Load Application: Electric motors drive large rollers (e.g., 2m diameter), applying simulated load and speed.
Performance Measurement: Records PTO (Power Take-Off), drawbar power, torque, wheel speed, and power output.
Consumption & Emissions: Measures specific fuel/AdBlue consumption and NOx emissions.
Data Acquisition: Real-time systems capture data for analysis, with high accuracy (e.g., ±0.10 Nm for torque).
Simulated Conditions: Allows testing under various cycles and conditions, mimicking real-world use.
How it Works
Tractor Placement: The tractor drives onto the rollers, which are positioned to match its wheel spacing.
Load Application: The dynamometer applies a controlled load, simulating pulling implements or driving on different terrains.
Data Collection: Sensors measure wheel torque, speed, engine parameters, and fuel flow.
Analysis: Data is used to generate performance curves, efficiency maps, and emission reports, adhering to standards like AIS-137 for India.
Key Benefits
Quality Control: Verifies performance before delivery, ideal for new product validation and end-of-line testing.
Research & Development: Aids in developing efficient powertrains and control systems.
Space & Time Saving: Eliminates the need for test tracks, reducing space and time for running-in and testing.
Example Systems:
DLG PowerMix: Features four 2m rollers, handles high power (up to 700 kW), and measures fuel/AdBlue consumption.
Roltamax: Offers various chassis dynamometers, including those for tractors, with high-precision measurement.