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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part D. Journal of Automobile Engineering >Detection and correction of injection failures in diesel engines on the basis of turbocharger instantaneous speed frequency analysis
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Detection and correction of injection failures in diesel engines on the basis of turbocharger instantaneous speed frequency analysis

机译：基于涡轮增压器瞬时转速频率分析的柴油机喷射故障检测和纠正

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摘要

Combustion failure diagnosis techniques for reciprocating internal combustion engines have been developed over the last few years. Nowadays the most usual techniques are based on the crankshaft instantaneous speed or on engine vibrations. These methods, although successfully in use, may be applied only to maintenance tasks or to low and moderate engine speeds. In this paper, a controller for the correction of injection failures is presented. The aim of the algorithm is to ensure that the same quantity of fuel is injected into each one of the cylinders. This governor can be applied to the full operating range of the engine. The injection failure detection and identification technique is based on the measurement of the turbocharger instantaneous speed and its treatment in the frequency domain. The simulation of the controller shows an effective reduction in the dispersion between cylinders to a level below 2 per cent.
机译：过去几年中已经开发出用于往复式内燃机的燃烧故障诊断技术。如今，最常用的技术是基于曲轴瞬时速度或发动机振动。这些方法尽管已成功使用，但仅可用于维护任务或低速和中速发动机转速。在本文中，提出了一种用于校正喷射故障的控制器。该算法的目的是确保将相同数量的燃料喷射到每个气缸中。该调速器可应用于发动机的整个工作范围。喷射故障检测和识别技术基于涡轮增压器瞬时速度的测量及其在频域中的处理。控制器的仿真显示，气缸之间的分散有效降低到2％以下的水平。

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