Document Overview
Key Findings All four EV3 improved pump core samples completed the full 40-hour endurance cycle at 35 PSI load with no functional failures, no abnormal noise, and no piston cup edge-folding defects detected throughout the test period. Product: EV3 Air Pump Core (Semi-finished, Improved Version)…
- Document type
- Certification Report
- Prepared by
- Daniel Wright
- Published
- Last reviewed
- Topics
- Mechanical Reliability
Key Findings
All four EV3 improved pump core samples completed the full 40-hour endurance cycle at 35 PSI load with no functional failures, no abnormal noise, and no piston cup edge-folding defects detected throughout the test period.
- Product: EV3 Air Pump Core (Semi-finished, Improved Version)
- Report No.: 2025042501
- Test Duration: 40 hours per sample (run 20 min ON / 20 min OFF at 35 PSI)
- Samples Tested: 4 PCS (C0418-1# through C0418-4#)
- Functional Checks: Every 5 operating hours — all passed
- Overall Verdict: For Reference Only (供参考)
- Piston Cup Condition: No edge-folding or deformation on any sample
Test Overview
| Field | Detail |
|---|---|
| Test Title | Life Test of Air Pump Core (Semi-finished Product) — EV3 Improved Version |
| Product No. / Name | Air Pump Core (充气泵) |
| Model / Specification | EV3 (Improved — 改善后) |
| Report No. | 2025042501 |
| Test Date | 2025-04-18 to 2025-04-25 |
| Sample Quantity / ID | 4 PCS |
| Test Type | Reliability Test (可靠性测试) |
| Test Standard | Internal Control Standard (内控标准) |
| Test Purpose | Evaluate whether the piston cup lifespan of the improved EV3 pump core affects functional performance during extended use. |
| Acceptance Criteria | No functional failure; observe reliability and stability throughout the full test duration. |
Test Equipment & Setup
| Item | Detail |
|---|---|
| Test Equipment | DC Power Supply (直流电源), Test Fixture (测试夹具), Regulating Valve (调节阀) |
| Ambient Temperature | 23 °C |
| Relative Humidity | 60 % |
| Power Source | 12 V DC |
| Load Pressure | 35 PSI |
| Run Cycle | 20 minutes ON / 20 minutes OFF |
| Total Required Run Time | 40 hours cumulative operating time |
| Functional Check Interval | Every 5 operating hours |
Test Procedure
- Pre-test: Confirm all four samples (C0418-1# to C0418-4#) are correctly mounted in the test fixture. Set DC power supply to 12 V and regulating valve to 35 PSI load. Verify ambient conditions: 23 °C, 60 % RH.
- Cycle operation: Run each pump core for 20 minutes under 35 PSI load, then stop for 20 minutes. Repeat this ON/OFF cycle continuously until each sample accumulates 40 hours of total operating time.
- Intermediate functional check: Every 5 cumulative operating hours, pause the endurance cycle and perform a full functional test on all samples. Record any anomalies — abnormal noise, performance degradation, piston cup edge-folding, or other defects.
- Post-test inspection: After 40 hours of cumulative operation, conduct a final functional test and visual inspection of each piston cup for edge-folding, deformation, or wear.
- Acceptance criteria: All samples must show no functional failure, no abnormal noise, no piston cup edge-folding, and stable, consistent performance throughout. Result is classified as Pass, Fail, or For Reference Only per the test record.
Test Data & Results
| Sample ID | Test Duration (Hours) | Observations / Issue Description |
|---|---|---|
| C0418-1# | 40 | No abnormal noise during operation; performance basically stable; no piston cup edge-folding or other defects; capable of continuous operation; no other anomalies. |
| C0418-2# | 40 | No abnormal noise during operation; performance basically stable; no piston cup edge-folding or other defects; capable of continuous operation; no other anomalies. |
| C0418-3# | 40 | No abnormal noise during operation; performance basically stable; no piston cup edge-folding or other defects; capable of continuous operation; no other anomalies. |
| C0418-4# | 40 | No abnormal noise during operation; performance basically stable; no piston cup edge-folding or other defects; capable of continuous operation; no other anomalies. |
Test picture phases recorded: During testing (测试中) · After testing (测试后) · Functional test OK (功能性测试OK)
Test result summary: After completing the 40-hour endurance life test, all EV3 improved pump core samples demonstrated good performance. No piston cup edge-folding or other defects were observed. The test concluded normally.
Conclusion
| Field | Detail |
|---|---|
| Overall Result | For Reference Only (供参考 ■) |
| Pass | Not checked (口合格) |
| Fail | Not checked (口不合格) |
| Test Standard / Criteria | Internal Control Standard — no functional failure; piston cup integrity maintained |
| Test Conditions | 12 V DC · 35 PSI load · 20 min ON / 20 min OFF · 23 °C · 60 % RH |
| Samples | 4 PCS (C0418-1# to C0418-4#), all completed 40 hours |
| Verdict | All four EV3 improved pump cores passed the 40-hour life test with stable performance and intact piston cups. Result recorded for reference in product improvement evaluation. |
Document Information
| Role | Name (Pinyin) | Date |
|---|---|---|
| Tested By (测试/日期) | Li Guanghua | 2025-04-25 |
| Checked By (审核/日期) | Zhang Ronggui | 2025-04-25 |
| Approved By (核准/日期) | Mai Shaoqiang | 2025-04-25 |
| Form No. | BTK-R-Q142/AO | |
Frequently Asked Questions
What does the 40-hour life test for the EV3 pump core measure?
The test evaluates the long-term mechanical reliability of the EV3 improved pump core — specifically whether the piston cup (皮碗) degrades, edge-folds, or causes functional failure after sustained operation. The pump runs at 35 PSI on a 20-minute ON / 20-minute OFF duty cycle for a total of 40 cumulative operating hours, with a functional check every 5 hours.
What is the difference between the improved EV3 pump core and the previous version?
This report covers the post-improvement (改善后) EV3 pump core. The improvement specifically targeted piston cup durability to eliminate edge-folding defects observed in the prior design. The life test results confirm that all four improved samples completed 40 hours without any piston cup edge-folding or performance degradation.
Why is the overall result marked “For Reference Only” rather than “Pass”?
The “For Reference Only” (供参考) designation indicates that the test data is being used to support an internal product improvement evaluation rather than as a formal compliance certification. The test was conducted against an internal control standard, and the findings inform further development decisions rather than a binary pass/fail product release gate.
How often were functional checks performed during the EV3 life test?
Functional checks were performed once every 5 cumulative operating hours throughout the 40-hour endurance cycle. All intermediate checks and the final post-test inspection confirmed stable performance and no defects across all four samples.
Related Products
Explore additional test documentation and product pages for the EV3 inflation tool series: