Heavy-Duty High-Power Engine Dynamometer Absorber

The NSW 13-inch platform is designed for high-torque and high-horsepower engine testing.

The 13-inch dual-rotor platform has been developed for extreme-performance automotive, diesel, racing and industrial applications.

Current NSW 13-inch dual-rotor development is aimed at approximately:

2,500 HP class operation

with heavy-duty mechanical construction and high load capacity.

Water-System Requirements

A high-power 13-inch installation requires substantially more than a simple garden or booster pump.

Using the NSW conservative system-sizing guideline:

1,000 HP → approximately 150 GPM

1,500 HP → approximately 225 GPM

2,000 HP → approximately 300 GPM

2,500 HP → approximately 375 GPM

These figures represent available pump capacity.

Actual brake consumption is determined by the engine operating condition and control-valve position.

Recommended Water Circuit

Reservoir → High-Flow Pump → Regulator → Automatic Load Valve → NSW 13" Brake → Cooling System → Reservoir

For very high-power operation, dual load-control valves may be appropriate when additional flow capacity and control authority are required.

Torque Measurement

The absorber housing reacts against a torque arm connected to an S-type or equivalent load cell.

The dyno controller calculates:

Torque = Force × Arm Length

and:

HP = Torque × RPM ÷ 5252

Lubrication

High-load and high-RPM installations may use forced grease injection or circulating oil lubrication depending on the bearing arrangement and application.