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AN AIRFLOW-DOMINANT CONTROL SYSTEM FOR FUTURE DIESEL ENGINES
Technical Paper
2007-01-2070
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An airflow-dominant control system was developed to provide precise engine and exhaust treatment control with low air fuel ratio alternative combustion. The main elements of the control logic include a real-time state observer for in-cylinder oxygen mass estimation, a simplified packaging scheme for all air-handling and fueling parameters, a finite state machine for control mode switching, combustion control models to maintain robust alternative combustion during transients, and smooth rich/lean switching during lean NOx trap (LNT) regeneration without post injection. The control logic was evaluated on a passenger car equipped with a 4-way catalyst system with LNT and was instrumental in achieving US Tier II Bin 5 emission targets with good drivability and low NVH.
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Sarlashkar, J., Sasaki, S., Neely, G., Wang, J. et al., "AN AIRFLOW-DOMINANT CONTROL SYSTEM FOR FUTURE DIESEL ENGINES," SAE Technical Paper 2007-01-2070, 2007, https://doi.org/10.4271/2007-01-2070.Also In
References
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