Model 3900NVH Squeal Rig Dynamometer

2 Test Smarter.

Model 3900 SR

Product OverviewThe Model 3900 NVH Squeal Rig (Model 3900-SR) is a full-sized test machine solely designed for brake

noise testing on automotive and light truck applications up to 5,650 Nm. This state-of-the-art machine

incorporates a specially designed AC motor that delivers precise high torque drag capability required

for NVH brake testing. The unique feature of the Model 3900-SR is its single fixed inertia disc, relying

exclusively on inertia simulation and requiring no technician disc change-outs.

Fixture style is a vehicle suspension system or knuckle type and is located within a climatic controlled

acoustic free field chamber. The Model 3900-SR has one purpose in mind, to pinpoint the source of

brake noise and eliminate it through successful design enhancement testing.

• Tabular step-by-step test script generation

• Customizable brake engineer graphical data review software (RevDataPlus)

• Automated reporting tools through MS-Excel

• High accuracy electric inertia simulation (I-Sim)

• Servo brake profile control

• Precision sensors for measurement: noise, vibration, shaft speed, torque, pressure, fluid

displacement, brake temperature, cooling air speed, air temperature, humidity

• Integrated solutions provided by auxiliary systems (DTV measurement, water spray, etc.)

• Power brake bleed system

• Environmental conditioning capabilities

• Duct silencers

• NVH measurement system

• AC Motor (brushless system technology)

Key Features

Test Smar ter. 3

• Latest technology software and controls

• Proven components with low

maintenance

• Controls and power cabinet integrated

onto machine

• Isolated test fixture from any machine

vibrations

• Large test enclosure with free field

properties

• In-line rotating torque sensor

• Suspension test fixtures

• Knuckle test fixtures

• Safety interlocks on all guard doors

• Compact pedestal workstation

• Calibration fixture for torque

• Video monitoring camera

Key Benefits

• Water spray and brake soak system

• Disc Thickness Variation (DTV) measurement

• High accuracy secondary digital torque signal

for off- brake drag

• Electric over brake fluid apply system

• E-Caliper interface and power supply

• RegenSim for hybrid vehicle braking simulation

• NI DIAdem data converter

• Noise, Vibration and Harshness Tests

• SAE J2521 – Brake Squeal

• Cold Matrix

• Brake Torque Variation (BTV)

• Low Speed High Torque Drag Procedures

Test Procedures

Optional Systems

www.linkeng.com

Specifications

PROUDLY SERVING THESE INDUSTRIES

Model 3900-SR Dyno ( Standard)Model 3900-SR Dyno (With Ehanced Options)

Control Software ProLINK ProLINKSample Rate 5000 samples/sec 5000 samples/secDrive Motor 186 kW (AC) 186 kW (AC)Shaft Speed 0 - 1500 rpm 0 - 1500 rpmBrake Torque 5650 Nm 5000 NmDrag Torque n/a 100 NmMechanical Inertia 27.5 kgm² 27.5 kgm²Inertia Range with I-Sim 5 - 205 kgm² 5 - 205 kgm²Brake Apply Pressure 206.8 bar 206.8 barBrake Apply Rate 689 bar/sec 1034 bar/secTemperature -20 to +60 °C -40 to +60 °CHumidity 15 to 95% RH 15 to 95% RH