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Prompt Heat Release Analysis to Improve Diesel Low Temperature Combustion
Technical Paper
2009-01-1883
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Diesel engines operating in the low-temperature combustion (LTC) mode generally tend to produce very low levels of NOx and soot. However, the implementation of LTC is challenged by the higher cycle-to-cycle variation with heavy EGR operation and the narrower operating corridors. The robustness and efficiency of LTC operation in diesel engines can be enhanced with improvements in the promptness and accuracy of combustion control. A set of field programmable gate array (FPGA) modules were coded and interlaced to suffice on-the-fly combustion event modulations. The cylinder pressure traces were analyzed to update the heat release rate concurrently as the combustion process proceeds prior to completing an engine cycle. Engine dynamometer tests demonstrated that such prompt heat release analysis was effective to optimize the LTC and the split combustion events for better fuel efficiency and exhaust emissions. The reported techniques were in part to establish a model based control strategy for robust diesel LTC operations.
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Zheng, M., Tan, Y., Reader, G., Asad, U. et al., "Prompt Heat Release Analysis to Improve Diesel Low Temperature Combustion," SAE Technical Paper 2009-01-1883, 2009, https://doi.org/10.4271/2009-01-1883.Also In
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