Model 3900-P NVH Brake Dynamometer




Test Equipment, Laboratory Testing

Test Type

Performance, Durability, Noise, Vibration, & Harshness, Certification / Type Approval

Model 3900-P NVH Brake Dynamometer


The full-sized Model 3900-P NVH Brake Dynamometer is a single based dynamometer used to evaluate brake Performance and Noise, Vibration and Harshness (NVH) of automotive and medium truck brake systems in a controlled temperature and humidity environment. Utilizing a vehicle suspension fixture, it can accurately reproduce system NVH frequencies during low-speed brake drag protocols. The single base design is smaller in size than the 3900, and does not require an isolated foundation.


Sample Rate 2000 samples/sec
Drive Motor 186 kW (DC)
Shaft Speed 0 - 3000 rpm
Brake Torque 5650 Nm
Mechanical Inertia 33 - 280.5 kgm²
Inertia Range with I-Sim 5 - 400 kgm²
Brake Apply Pressure 200 bar
Brake Apply Rate 1000 bar/sec
Temperature -40 to +60°C
Humidity 15 to 95% RH


Key Benefits

  • ProLINK software
  • Operator controls on pedestal workstation
  • Proven components with low maintenance
  • Controls and power cabinet Integrated onto machine
  • Large environmentally controlled test enclosure
  • Suspension and knuckle test fixtures isolated from machine vibrations
  • Safety interlocks on all guard doors
  • Video monitoring camera

Test Procedures

  • AMS high speed fade
  • BEEPTM certification using SAE J2784
  • Brake Torque Variation - BTV
  • Corrosion removal behavior
  • Drum-in-hat performance
  • DTV generation and correction
  • ECE R13 and R90 type approval for categories N, M, and O
  • ISO 11157-ECE R13 performance
  • ISO 26867 friction behavior assessment
  • JASO C406 passenger car brake performance
  • JASO C419 and C459 caliper performance and durability
  • JASO C427 wear vs. temperature
  • JASO C436 in-line parking brake performance
  • JASO C442 parking brake structural integrity
  • JASO C443 mountain descent simulation
  • JASO C456 wear indicator noise
  • LACT noise and wear simulation
  • Laurel Mountain durability
  • Parking brake drive-away
  • Parking brake performance
  • Rotor thermal deflection
  • Rotor thermal fatigue
  • SAE J2784 for FMVSS 105 & 135 dyno testing below 4 450 kg GVWR
  • SAE J2928 rotor crack for aftermarket
  • Rotor thermal fatigue, shock, and strength testing
  • SAE J2521 noise squeal matrix
  • SAE J2522 AK-Master
  • SAE J2707 wear vs. temperature and block wear
  • Dynamometer testing under ISO 15484

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