A CYCLIC VARIABILITY MONITORING SYSTEM BASED UPON CYCLE RESOLVED EXHAUST TEMPERATURE SENSING

机译：基于循环分辨排气温度感测的循环变异性监测系统

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This paper describes a means of monitoring cyclic variability in reciprocating engines that is an alternative to cylinder pressure measurements. The monitoring system uses robust exhaust temperature sensors that are capable of detecting cycle-to-cycle variations in the gas temperatures near each exhaust port. These variations are related to cyclic variations in combustion, and tend to increase as cyclic variability worsens. Further processing yields a combustion variability signal that is intended to reflect relative changes in the Coefficient of Variation of Indicated Mean Effective Pressure (COV of IMEP). Proof of concept experiments have been carried out using a naturally aspirated, propane fueled automotive engine equipped with laboratory grade in-cylinder pressure transducers. The results show a good correlation between the exhaust cyclic variability signal and the COV of IMEP from cylinder pressure measurements.

机译：本文介绍了一种监测往复式发动机周期性变化的方法，该方法可替代气缸压力测量。监控系统使用坚固的排气温度传感器，该传感器能够检测每个排气口附近气体温度的逐周期变化。这些变化与燃烧中的循环变化有关，并且随着循环变化性变差而趋于增加。进一步的处理将产生燃烧可变性信号，该信号旨在反映指示平均有效压力（IMEP的COV）的变化系数中的相对变化。使用配备实验室级缸内压力传感器的自然吸气，丙烷燃料汽车发动机进行了概念验证实验。结果表明，从气缸压力测量结果来看，排气循环可变性信号与IMEP的COV之间具有良好的相关性。

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《American Society of Mechanical Engineers(ASME) Internal Combustion Engine Division Fall Technical Conference; 20050911-14; Ottawa(CA)》|2005年|P.693-702|共10页
会议地点 Ottawa(CA)
作者
D.P. Gardiner; M.F. Bardon;
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Nexum Research Corporation Kingston, Ontario K7P 2R9;

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正文语种 eng
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A CYCLIC VARIABILITY MONITORING SYSTEM BASED UPON CYCLE RESOLVED EXHAUST TEMPERATURE SENSING

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