Hybrid vehicle techniques have been widely studied recently because of their potential to significantly improve the fuel economy and drivability future ground vehicles. Due dual-power-source nature these vehicles, control strategies based on engineering intuition frequently fail fully explore advanced In this paper, we present a procedure for design near-optimal power management strategy. The starts by defining cost function, such as minimizing combination consumption selected emission...

Due to the complex nature of hybrid electric vehicles, control strategies based on engineering intuition frequently fail achieve satisfactory overall system efficiency. This paper presents a procedure for improving energy management strategy parallel truck basis dynamic optimization over given drive cycle. Dynamic programming techniques are utilized determine optimal actions powertrain in order minimize fuel consumption. By carefully analyzing resulting policy, new rules can be ascertained...

Abstract A Mean Value Model (MVM) for a Homogeneous Charge Compression Ignition (HCCI) engine is presented. Using phenomenological zero-dimensional approach with five continuous and three discrete states we first model the effects of Exhaust Gas Recirculation (EGR) valve, exhaust Rebreathing Lift (RBL), fueling rate on state charge in cylinder at intake valve closing. An Arrhenius integral then used to start combustion, θsoc. series simple algebraic relations that captures combustion...

<div class="section abstract"><div class="htmlview paragraph">Charging a battery electric vehicle at extreme temperatures can lead to deterioration without proper thermal management. To avoid degradation, charging current is generally limited hot and cold temperatures. Splitting the wall power between management system with aim of minimizing time challenging problem especially strong coupling current. Existing research focus on formulating control as minimum optimal problem. Such...

A mean value model (MVM) for a homogeneous charge compression ignition (HCCI) engine is presented. Using phenomenological zero-dimensional approach with five continuous and three discrete states we first the effects of exhaust gas recirculation (EGR) valve, rebreathing lift (RBL), fueling rate on state in cylinder at intake valve closing. An Arrhenius integral then used to start combustion, /spl theta//sub SOC/. series simple algebraic relations that captures combustion duration heat release...

The competition to deliver fuel efficient and environmentally friendly vehicles is driving the automotive industry consider ever more complex powertrain systems. Adequate performance of these new highly interactive systems can no longer be obtained through traditional approaches, which are intensive in hardware use final control software calibration. paper explores dynamic programming make model-based design decisions for a lean burn, direct injection spark ignition engine, combination with...

<div>Fully flexible valve actuation (FFVA) is a key enabling technology of internal engine combustion research and development. Two laboratory electro-hydraulic FFVA systems have been developed implemented in R&D test cells. These were designed using repetitive control (RC), which based on model principle (IMP), for constant speed operation. With the operating steady-state condition, profile input periodic. This can be accommodated by controller, provides function to step...

Homogeneous charge compression ignition (HCCI) promises efficient combustion and less NO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> emissions over conventional modes. However, the lack of direct trigger cycle-to-cycle coupling in recompression HCCI makes phasing control problem difficult. To further complicate matter, we show this paper that natural dynamics can change drastically from one operating point to another. Our analyses...

Auto-ignited combustion in HCCI (Homogeneous Charge Compression Ignition) engine highly depends on temperature and composition of the cylinder charge. In this paper, a robust controller is developed based control-oriented model. The indirectly manages by controlling burned gas fractions intake exhaust manifolds. To compensate steady state error phasing, an outer-loop introduced to adjust set-points drive phasing desired value. designed also evaluated through experiments with single-cylinder engine.

Engines equipped with a means to actuate air flow at the intake port can achieve superior fuel economy performance in steady state. The paper shows how modern nonlinear design techniques be used control such an engine over wide range of dynamic conditions. problem is challenging due nonlinearities and delays inherent model, saturation actuator. solution has two novel features. Firstly, recovery method directly integrated into design. second feature that Lyapunov function methodology applied...

&lt;div&gt;A multiple output dynamically adjustable capacity system (MODACS) is developed to provide voltage levels while supporting varying power loads by switching battery strings between serial and parallel connections. Each module of the can service either a low bus placing its in or high with series. Since MODACS contains several such modules, it produce voltages simultaneously. By which modules different rails connection strategy over time, balance states charge (SOC) modules. A model...

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;A model-based torque control strategy which is simple and easily adaptable to various types of engines developed in this paper. A model derived from constant-volume combustion model, applications the engine problem are also discussed. As examples, calibrated with experimental data collected two different engines, simulation results presented as well.&lt;/div&gt;&lt;/div&gt;

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;When an SI engine is equipped with individual cylinder pressure transducers, combustion timing of each can be precisely controlled by adjusting spark in real-time. In this paper, a novel method based on principal component analysis (PCA) introduced to control the significantly less computational burden than conventional method.&lt;/div&gt;&lt;/div&gt;

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;The paper presents a robust adaptive control technique for precise regulation of port fuel injection + direct (PFI+DI) system, dual configuration adopted in modern gasoline engines to boost performance, efficiency, and emission reduction. Addressing parametric uncertainties on the actuators, inherent complex systems, proposed approach utilizes an indirect model reference scheme. To accommodate increased complexity...

&lt;div&gt;The combustion timing of auto-ignited is determined by composition, temperature, and pressure cylinder charge. Thus, for a successful auto-ignition, those key variables must be controlled within tight target ranges, which challenging due to (i) nature coupling between variables, (ii) complexity managing multiple actuators in the engine. In this article, control strategy that manages boosted homogeneous charge compression ignition (HCCI) engine developed maintain robust combustion....

The oxygen concentration in the intake manifold of a lean-burn engine is key variable that directly related to quality combustion. In this paper, an adaptive observer developed estimate using measurements from existing sensors with minimum computational load. Performance evaluated transient experimental data obtained diesel engine.