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Transient Control Technology of Spark Assisted HCCI
Technical Paper
2015-01-0880
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Amidst the rising demand to reduce CO2 and other greenhouse gas emissions in recent years, gasoline homogeneous-charge compression ignition (HCCI) has gained attention as a technology that achieves both low NOx emissions and high thermal efficiency by means of lean combustion.
However, gasoline HCCI has low robustness toward intracylinder temperature variations, therefore the problems of knocking and misfiring tend to occur during transient operation.
The authors verified the transient operation control of HCCI by using a 4-stroke natural aspiration (NA) gasoline engine provided with direct injection (DI) and a variable valve timing and a lift electronic control system (VTEC) for intake air and exhaust optimized for HCCI combustion.
This report describes stoichiometry spark ignition (SI) to which external exhaust gas recirculation (EGR) was introduced, HCCI ignition switch control, and changes in the load and number of engine revolutions in the HCCI region.
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Citation
Takazawa, M., Komura, K., and Kitamura, T., "Transient Control Technology of Spark Assisted HCCI," SAE Technical Paper 2015-01-0880, 2015, https://doi.org/10.4271/2015-01-0880.Also In
References
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