Fuel governor augmented control of recompression HCCI combustion during large load transients

Adaptive control of homogeneous charge compression ignition engines

“…The novelty of this paper is the application of a rigorous adaptive control design to regulation of HCCI combustion timing, which is highly sensitive to uncertainties or unknown variation in cylinder charge properties, of an engine with strong nonlinear cycle‐to‐cycle coupling. Controlled autoignition of such an engine has been achieved by various observer‐based state feedback controllers in based on either a switching linear model or a nonlinear model. The presence of uncertainty or unknown variation in plant parameters, such as exhaust runner wall temperature and cylinder charge properties, may therefore cause inaccuracy or instability of the overall closed‐loop systems.…”

“…A model predictive controller is developed in based on the switching linear model in and produces better transient performance than an LQ controller during combustion set‐point changes of a recompression HCCI engine. More recently in , negative valve overlap and fuel injection timing are used for combustion timing control, and a fuel governor is added to improve transient performance by enforcing actuator constraints. Concurrently with , fuel injection quantity is controlled in a recompression HCCI engine to settle at a late phasing equilibrium with reduced cyclic variations .…”

“…More recently in , negative valve overlap and fuel injection timing are used for combustion timing control, and a fuel governor is added to improve transient performance by enforcing actuator constraints. Concurrently with , fuel injection quantity is controlled in a recompression HCCI engine to settle at a late phasing equilibrium with reduced cyclic variations . For the exhaust rebreathing strategy, an observer‐based nonlinear feedback controller, which stabilizes the cycle‐to‐cycle temperature dynamics discussed in and regulates the combustion timing during fuel step changes is developed in .…”

“…The success of the controllers in , however, depends heavily on the validity of either a switching linear model or a nonlinear model, based on which state feedback controllers and state estimators are developed for controlled autoignition. The presence of uncertainty or unknown variation in plant parameters, such as exhaust runner wall temperature and cylinder charge properties, may therefore cause inaccuracy or instability of the overall closed‐loop systems.…”

Quantitative Feedback Control of Multiple Input Single Output Systems

“…Heat exchangers [18][19][20], chemical reactors in polymerization processes [9,18], or distillation columns [9,[20][21][22][23] are repeated references in the scientific literature as MISO control applications. The automotive industry has also adopted these principles, firstly for the government of internal combustion engines [24][25][26][27] and recently for HCCI (Homogeneous Charge Compression Ignition) engines [28][29][30]. Another area devoted to MISO control is the consumer electronics, and particularly the massive data storage devices [31][32][33].…”