Combustion characteristics of a direct injection engine fueled with natural gas-hydrogen blends under various injection timings (PDF)
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Combustion characteristics of a direct injection engine fueled with natural gas-hydrogen blends under various injection timings (PDF)
- 发表刊物：
- Energy Fuels
- 摘要：
- Combustion characteristics under various injection timings of a direct-injection engine fueled with natural gas-hydrogen blends at fixed injection duration and fixed ignition timing were investigated. The study shows that early injection decreases the excessive-air ratio and makes leaner mixtures. The brake mean effective pressure increases with the advancement of fuel-injection timings. The brake mean effective pressure reaches a maximum value at an injection timing of 190 °CA BTDC and maintains this maximum value with the further advancement of fuel-injection timings. For a specific injection timing, an increase in the hydrogen fraction decreases the brake mean effective pressure when the hydrogen fraction is less than 10%, whereas the brake mean effective pressure tends to increase when the hydrogen fraction is larger than 10%. Combustion durations decrease with the advancement of fuel-injection timing. When the hydrogen fraction is less than 10%, combustion durations increase with increasing hydrogen fractions; conversely, combustion durations decrease with increasing hydrogen fractions when the hydrogen fraction is larger than 10%. The amounts of NOx and CO2 increase with advancing fuel-injection timing, and the CO concentration experiences small variations under various fuel-injection timings. The addition of hydrogen in natural gas can reduce the CO2 concentration
- 合写作者：
- Huang ZH, Wang JH, Liu B
- 卷号：
- 2006, 20(4): 1498-1504
- 页面范围：
- 1498-1504
- 是否译文：
- 否
- 发表时间：
- 2006-07-15