论文部分内容阅读
本文主要叙述将文献[1]介绍的气动式快速压缩一次喷射燃烧装置改造成快速压缩膨胀一次喷射燃烧装置时所采取的措施。实践证明,用电磁阀放气来实现气动式燃烧装置的膨胀行程是可行的。从压缩膨胀一次喷射燃烧装置上可以获得更完整的信息。快速压缩膨胀一次喷射燃烧装置的特性试验表明,由于燃油系统一次喷射时的状态与油量校正时不同,所以在研究燃烧时,不能用喷油泵齿条位置来标志供油量。在研究受燃烧温度影响很大的排气中NO生成量时,用排气分析法来确定过量空气系数α,再由它来标志供油量,可使试验结果获得较好的再现性。
This article mainly describes the measures taken to transform the pneumatic quick-compression primary injection combustion device introduced in [1] into a rapid compression expansion primary injection combustion device. Practice has proved that the solenoid valve deflated to achieve expansion of pneumatic combustion device stroke is feasible. More information can be obtained from the compression-expansion primary jet combustion unit. Rapid compression and expansion The characteristics of a primary jet combustion unit test show that the fuel system can not be marked with the rack position of the fuel pump when studying the combustion because the state of the fuel injection system at the time of single injection is different from that at the time of fuel quantity correction. When studying the NO generation in the exhaust gas, which is greatly affected by the combustion temperature, the exhaust air analysis method is used to determine the excess air coefficient α, which is then used to indicate the fuel supply amount so that the test results can be reproduced with good reproducibility.