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针对内燃机废气排放的动态检测 ,介绍了一种利用质谱仪进行检测的方法。飞行时间质谱仪和四极质谱仪是现有质谱系统中速度较快的动态质谱仪器 ,四极质谱仪可以在毫秒级时间内实现单峰质谱扫描 ,飞行时间质谱仪甚至可以达到纳秒级。对上述两种质谱仪器的原理进行了介绍 ,提出了动态检测的系统方案。给出了两种质谱仪动态检测内燃机排气成分的试验结果 ,其动态特性完全能满足废气检测的需要
Aiming at the dynamic detection of internal combustion engine exhaust emission, a method of detecting by mass spectrometer is introduced. Time-of-flight mass spectrometers and quadrupole mass spectrometers are fast, dynamic mass spectrometers available in existing mass spectrometry systems. Quadrupole mass spectrometers implement single-peak mass spectrometry in milliseconds, and time-of-flight mass spectrometers can even achieve nanosecond levels. The principle of the above two mass spectrometers is introduced, and the system scheme of dynamic detection is put forward. Two kinds of mass spectrometer dynamic testing exhaust composition of the internal combustion engine test results, and its dynamic characteristics can fully meet the needs of exhaust gas detection