Automotive HVAC Case Study

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Automotive HVAC Case Study

autohvacAutomated Quality Testing of Automotive HVAC Units


Heating, Ventilation, and Cooling systems are vital to today’s driving experience. With customer satisfaction tested with each push of a button, noise, vibration, and failure are not an option.

Challenge

Develop a functional test system that cycles HVAC assemblies through all of their functions to validate quality.

Calling the Experts

The customer, a Tier 1 automotive supplier, called upon Signalysis to develop an automated quality test system capable of evaluating 100% of the manufactured units.

Testing Goals:

  • Provide inspection for all manufactured HVAC units
  • Meet cycle time requirements
  • Store data in an SQL database by SN and time/date
  • Provide daily production reports
  • Serve Data for Statistical Process Control

Blowing away NVH Issues

Signalysis designed and developed a custom IQC™ test station providing the customer with the ability to:

  • Equate subjective assessments to root cause
  • Validate aesthetic & functional specifications
  • Minimize production cycle time impact
  • Eliminate the cost & subjectivity of human inspection

The IQC station included:

  • A computer control system
  • Multi-channel data acquisition system
  • Digital I/O interface hardware
  • Accelerometers / automated placement devices
  • SigQC™ analysis software

Results

Tests on each HVAC unit were conducted to detect defects in sound quality and functional specifications including: current, rpm, pressure, louver arc, and so on.

As a result of implementing the Signalysis IQC Test System, all test requirements were met. As a result the manufacturer could proceed confident that its own rigid quality standards, and lofty expectations of its customers, were not only met; but exceeded.