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Automotive industry


LTT precision measuring devices are ideally suited for the following areas of application in the automotive industry due to the combination of their robustness, high measuring accuracy and high precision in power measurements.

Noise analysis

Three-dimensional analysis of vehicle noise sources

  • Array measurement on 16 synchronous channels

Component tests

...on injection systems - also measurements indexed as rotational speed

  • Flexibility of the measuring systems
  • Very high sampling rate with 24 bit resolution
  • Measuring systems are cascadable and can also be used in combination for multi-channel measurements

Engine testing technology

Measurements via acceleration sensors of stresses, strains and vibrations directly at the engine.

  • Very high sampling rates
  • Compact design
  • Simple operation
  • Fast, patented data transfer from the measuring system to the PC

Airbag development | Test systems

In airbag testing, control signals are measured that signal the functionality of airbags to the on-board electronics in vehicles.

High-performance measuring equipment is needed to fulfil the high requirements. This includes the following requirements:

  •     Autonomous measurement: The system must be able to record longer periods of time (up to the minute range) without permanent computer support.
  •     High signal bandwidth: High bandwidths (up to 1.5 MHz or higher) are required to record all important frequency components of structure-borne sound.
  •     High sampling rate to capture the sometimes weak signals
  •     Numerous trigger functions
  •     Simple data reduction via maths function in the LTTpro software

The solution presented here is the LTTsmart transient recorder, which is considered to be particularly powerful.

This variant has proven themselves in stationary test bench operation.

Engine development

Test technology for measurements on engine control and engine functions, output signals from engines, ignition voltages.

  • Simultaneous measurements over many channels

  • Measurement of output signals: motors, ignition voltages, etc.

  • Measurements over long periods of time

Material test / Crash test

Material samples from the deformation areas of vehicle bodies are analysed for their characteristic structure-borne sound parameters. For example, the potential sound energy density of a material or body part is quantified.

Powerful and robust measuring equipment is required to meet the high demands of crash diagnostics. This includes the following requirements:

  • Autonomous measurment, high signal bandwidth, high sampling rate, numerous trigger functions & simple data reduction via maths function in the LTTpro software (see above)

  • Robustness: As extreme accelerations (over 70g) occur in crash applications, the system must be crash-proof.

The solution presented here is the LTTsmart transient recorder, which is considered to be particularly powerful. In addition, the robust LTT24 is used for the highest loads.

Both variants have proven themselves both in stationary test bench operation and in mobile crash applications.

Monitoring rotating machines

LTT measuring devices are used for real-time monitoring of rotating machines and pumps in production monitoring. They enable precise quality control, optimisation and predictive maintenance of

  • electric motors

  • gearboxes

NVH analysis

NVH (noise, vibration, harshness) analyses check the conditions of rigid rotors, among other things

  • Balancing condition analysis
  • Balancing
  • Vibration analysis
  • Modal analysis

Application reports

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