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Contract testing and consulting services

Automotive powertrain performance evaluation

We offer a wide range of testing services, from unit evaluation to complete vehicle evaluation. Our reliable measurements, utilizing our own facilities, support your automotive development.

  • Automotive Powertrain Performance Evaluation - No. 1
Automotive Powertrain Performance Evaluation_No.2

We have facilities that allow us to evaluate individual engines and drivetrains, powertrain units, and vehicles in various conditions. In addition to contract testing, we also engage in joint research and development with our customers.
At the Utsunomiya Technical & Product Center, we conduct automotive testing, primarily focusing on powertrains, using a total of eight facilities: four engine benches, two transmission benches, one full-vehicle Transient Bench, and one chassis dynamometer.

　
Introduction to the facilities of the Automotive Experiment Building (PDF)

Case Studies

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  • Efficiency measurement of electric vehicles

    Efficiency measurement of electric vehicles

  • Gasoline passenger car exhaust gas and fuel efficiency tests

    Gasoline passenger car exhaust gas and fuel efficiency tests

  • EV cabin noise evaluation using RC-S bench

    EV cabin noise evaluation using RC-S bench

  • Tire noise measurement using a constant temperature NV chassis dynamometer

    Tire noise measurement using a constant temperature NV chassis dynamometer

  • Measurement of sound radiation and acoustic intensity of the transmission unit alone.

    Measurement of sound radiation and acoustic intensity of the transmission unit alone.

  • Model building and experimental analysis to support Model-Based Development (MBD) of powertrains

    Model building and experimental analysis to support Model-Based Development (MBD) of powertrains

Noise and vibration countermeasures

We offer contract measurement and consulting services to address improvements and challenges related to acoustics and vibration.
From defining the problem and understanding the phenomenon to verifying the effectiveness, we can support you at any stage of the solution process, depending on your situation.

  • Noise and vibration countermeasures
Understanding phenomena

Clarifying the challenges in solving acoustic and vibration problems

Identifying the affected area and elucidating the mechanism

By breaking down the "characteristics of the time domain and frequency domain" and the "complex component configuration in which the issues are interrelated,"
Determine the target for the solution.

Proposal of reduction method

Once the areas requiring design changes are determined, the specific design changes are implemented, including how to implement acoustic and vibration design.

Effectiveness check

Check the effects before and after the countermeasures.

Sound is a particularly subjective quantity, so simply reducing it isn't the only goal.
Acoustic and vibration consulting services can provide advice and support at this stage of the process.

Case Studies

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  • Actual operation analysis during engine startup

    Actual operation analysis during engine startup

  • Understanding natural frequencies and vibration shapes using tracking analysis.

    Understanding natural frequencies and vibration shapes using tracking analysis.

  • EV cabin noise evaluation using RC-S bench

    EV cabin noise evaluation using RC-S bench

  • Visualization of the sound source of a car door closing using 4-channel beamforming.

    Visualization of the sound source of a car door closing using 4-channel beamforming.

  • Measurement of sound pressure maps under the vehicle floor using Ultraminiature Microphone

    Measurement of sound pressure maps under the vehicle floor using Ultraminiature Microphone

  • Sound source detection during printer initial operation

    Sound source detection during printer initial operation

  • Noise analysis of refrigerator compressor noise

    Noise analysis of refrigerator compressor noise

  • Vehicle rattling noise evaluation using fluctuating sound analysis

    Vehicle rattling noise evaluation using fluctuating sound analysis

  • Subjective evaluation of the in-car central door lock sound and sound quality improvement.

    Subjective evaluation of the in-car central door lock sound and sound quality improvement.

  • Improving the sound quality of in-car sunroofs using a noise problem resolution process.

    Improving the sound quality of in-car sunroofs using a noise problem resolution process.

Noise propagation prediction model-based development support

In addition to noise prediction, we undertake the experimental analysis necessary for building and validating highly accurate models. We contribute to the advancement of model-based development through both measurement and simulation.

  • Noise propagation prediction model-based development support

Case Studies

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  • Whitebody experimental mode analysis

    Whitebody experimental mode analysis

  • Strength analysis of crank angle sensor rotation stopper jig using experimental CAE

    Strength analysis of crank angle sensor rotation stopper jig using experimental CAE

  • Tire noise measurement using a constant temperature NV chassis dynamometer

    Tire noise measurement using a constant temperature NV chassis dynamometer

  • Measurement of sound radiation and acoustic intensity of the transmission unit alone.

    Measurement of sound radiation and acoustic intensity of the transmission unit alone.

  • Predicting factory noise using SoundPLAN®

    Predicting factory noise using SoundPLAN®

  • Predicting road traffic noise using SoundPLAN®

    Predicting road traffic noise using SoundPLAN®

  • Comparison of measured and predicted noise propagation in construction machinery

    Comparison of measured and predicted noise propagation in construction machinery

  • FEM structure optimization using experimental modal analysis

    FEM structure optimization using experimental modal analysis

  • Model building and experimental analysis to support Model-Based Development (MBD) of powertrains

    Model building and experimental analysis to support Model-Based Development (MBD) of powertrains

Acoustic vibration characteristics evaluation (JIS/ISO)

We offer contract acoustic and vibration testing services in accordance with JIS/ISO standards, utilizing Ono Sokki 's acoustic laboratory and acoustic and vibration measurement systems. Some of our measurement systems are also available for purchase.

  • Acoustic vibration characteristics evaluation (JIS/ISO)

Case Studies

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  • Measurement of vibration damping characteristics of a cylinder due to impact excitation

    Measurement of vibration damping characteristics of a cylinder due to impact excitation

  • Measurement of the loss coefficient of vibration damping materials using the central vibration excitation method.

    Measurement of the loss coefficient of vibration damping materials using the central vibration excitation method.

  • Measurement of sound transmission loss of sound insulation materials using the reverberation chamber method

    Measurement of sound transmission loss of sound insulation materials using the reverberation chamber method

  • Measurement of printer acoustic power levels in a semi-anechoic chamber

    Measurement of printer acoustic power levels in a semi-anechoic chamber

  • Measurement of airborne sound insulation performance of materials using the acoustic intensity method.

    Measurement of airborne sound insulation performance of materials using the acoustic intensity method.

  • Measurement of sound absorption coefficient of sound-absorbing materials using the reverberation chamber method

    Measurement of sound absorption coefficient of sound-absorbing materials using the reverberation chamber method