GB/T 41770-2022 in English
VALIDTest method for liquid fuel injection using backlit imaging
- Issued on:2022-10-12
- Implemented on:2022-10-12
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$280.00
$272.00
$272.00
《GB/T 41770-2022基于背光成像技术的液体燃料喷射特性测试方法》由TC441（全国燃烧节能净化标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Core Technology Innovation
Backlight Imaging System achieves micron-level droplet observation through the precise combination of light source, light diffuser and camera, which improves the measurement accuracy by 400%
compared with traditional contact measurement. Equipment Performance Comparison
| Components | Parameter Requirements | Differences in Traditional Methods |
|---|---|---|
| Light Source | Illumination Fluctuation≤±10% | Halogen Light Source±25% |
| High-Speed Camera | Resolution ≥ 1152 × 894 pixels | 1.2 million pixel camera |
Application Case Analysis
A space fuel laboratory adopted this standard to accurately measure the deviation of the spray cone angle of a new fuel <15μrad under 10MPa supercritical conditions, and successfully optimized the combustion chamber design.
Key points of implementation
Synchronous control system needs to ensure signal delay <1μs, and it is recommended to use FPGA architecture controller.
Environmental pressure control needs to be equipped with a PI precision control valve, and temperature fluctuation must be ≤±2℃.
Environmental pressure control needs to be equipped with a PI precision control valve, and temperature fluctuation must be ≤±2℃.
Data quality control
- Repeat the test ≥5 times and take the maximum likelihood estimate
- Conduct measurement uncertainty analysis according to GB/T27418
- Noise elimination adopts the 3σ criterion
Sample only — not a preview of GB/T 41770-2022
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