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Hybrid Powertrain End-of-Line Quality Test - Gear Nick

  • Test Object:

    NEV Hybrid Powertrains

  • Application Scenario:

    End-of-Line Quality Test

  • Challenges:

    • (Figure 1) The structure of the test object, comprising drive motors, generators, multi-stage gearing transmission, multiple shafts and bearings, is complex, which adds to the complication of determining the transmission path.
    • (Figure 2) The gear surfaced may have been fractured or otherwise damaged during transportation or assembly.
    • Comprehensive inspection involves disassembling the test object which is time-consuming, difficult to toubleshoot, often with dissatisfactory results.

  • Method of Evaluation:

    Using Shaft Synchronization Analysis, SigMA assigns the acquired signals to individual shafts to automatically locate the faulty component (Figure 3). Operators may then quickly replace the defective parts as prompted.

Figure 1: NEV hybrid powertrain test & Figure 2: A gear surface fracture likely caused by knocking
Figure 1: NEV hybrid powertrain test & Figure 2: A gear surface fracture likely caused by knocking
Figure 3: SigMA system automatically detects and locates the faulty part
Figure 3: SigMA system automatically detects and locates the faulty part
Figure 4: Comparison of the color maps of a qualified product (left) with a defective product (right)
Figure 4: Comparison of the color maps of a qualified product (left) with a defective product (right)

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Synovate provides reliability, quality and health test solutions based on machine hearing technology for product whole lifecycle management