Individual cylinder fuel blend estimation in a dual-fuel engine using an in-cylinder pressure based observer
نویسندگان
چکیده
Cylinder-to-cylinder combustion dispersion in internal engines might be caused by various factors (e.g. manufacturing variations of the injectors or nozzle coking) which can result an increase pollutant emissions. When dealing with low temperature concepts such as premixed dual-fuel, system suffer from additional source due to port fuel injection distribution. Conventional cylinder concentration estimation is based on look-up tables previously calibrated and saved ECU. The aging distribution characterization are a challenging task when relying only single UEGO sensor placed at exhaust. In-cylinder pressure sensors offer powerful solution evaluate energy released one cycle resolution. present work proposes combine information provided together conventional sensors, this case air mass flow lambda sensor, for estimating blending ratio entering each heavy-duty dual-fuel engine. A Kalman filter was designed tackle dynamics system, e.g. delay distribution, validated both diesel combustion. output then used update table order cope possible bias over time.
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ژورنال
عنوان ژورنال: Control Engineering Practice
سال: 2021
ISSN: ['1873-6939', '0967-0661']
DOI: https://doi.org/10.1016/j.conengprac.2021.104760