Alat Uji Emisi Gas NVH Testing

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  • Negara Asal Australia
  • KategoriAlat Uji Emisi Gas
  • Update Terakhir03 Apr 2018

Spesifikasi Alat Uji Emisi Gas NVH Testing

Alat Uji Emisi Gas

Hofmann NVH chassis dynamometers are available as standard in single roller, 4×2, 4×4, and independent configurations.

The rollers are available from 1.8m to 2.5m in diameter, running in hydrodynamic or roller element bearings. The roller assemblies are acoustically attenuated to minimise the effect of noise generation and amplification. They can be either coated to represent a road surface or fitted with interchangeable road surface simulation shells.

Trunnion mounted motors compensate for system losses and simulate road load forces, vehicle inertia and gradients. These motors are installed in isolated areas and connected to the rolls by torsionally tuned couplings and drive shafts. Acoustic shaft seals, roll covers, and breakthrough seals around the rollers ensure effective noise containment. Wheelbase adjustment is available to accommodate different vehicles. Roller centres can be set automatically as part of the road load model information, or set to the user’s specific dimensions. The dynamometer baseframe is mounted on a moving carriage.

The dynamometer is provided with real-time control processor, Distributed I/O architecture and a GUI running the Windows™ 10 operating system. A powerful data logger can store system and vehicle parameters. A fully configurable real-time graphic package displays this information on screen.

A central server function and host computer interface are available to enable data to be passed in either direction.


Speed range ; 280 km/h
Absorption power per axle ; 278 kW
(100 – 280 km/h)
Force per axle : 10000 N
(0 – 100 km/h)
Inertia simulation range : 600 – 5400 kg
Wheelbase adjustment : 2260 mm – 4700 mm
Roller diameter : 1800 mm x 2 off
Width : 610 mm
Spacing : 1016 mm
Acoustic performance at 100 km/h 45 dBA (typical)

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