...-treatment system for simulating different aging problems such as injector inaccuracy and ammonia surface storage capacity reduction. This particular engine is based on a 3 l turbocharged diesel engine and the SCR system is about 5 l. The engine model is a map-based model and the SCR model is a modified...

... that σ f is uniformly small over the entire speed/load range in this study. In this paper, a biodiesel–diesel blend level estimation method with explicit consideration of the EGR effect is presented. Since EGR is now widely used in modern diesel engines to mitigate NO x emissions...

... in-cylinder gas mass is not significant in diesel engines due to their relatively higher compression ratios in comparison to those of gasoline engines, such an approximation is suitable. To address such a noise attenuation issue, another robust disturbance observer design method, motivated...

... was designed to control the urea injection rate for achieving different ammonia storages in the two catalysts. Experimental data from a US06 test cycle conducted on a medium-duty Diesel engine system showed that, with the similar total engine-out NO x emissions and NH 3 (AdBlue) consumptions, the proposed ASDC...

...Chris A. Satkoski; Gregory M. Shaver; Ranjit More; Peter Meckl; Douglas Memering; Shankar Venkataraman; Jalal Syed; Jesus Carmona-Valdes As engine designers look for ways to improve efficiency and reduce emissions, piezoelectric actuated fuel injectors for common rail diesel engines have shown...

... characteristics within DPF and selective catalytic reduction (SCR) systems, two most promising diesel engine aftertreatment systems. Although the majority of diesel engine-out NO x emissions is NO, the commonly used DOC located upstream of a DPF and a SCR can convert a considerable amount of NO to NO 2...

...-squares estimation scheme. The estimator is tested on a high-fidelity diesel engine simulator as well as on experimental data obtained at various operating conditions. The results obtained show the effectiveness of the estimator in reconstructing the cylinder pressure on a crank-angle basis...

... aftertreatment. A flexible, computationally efficient, and whole engine simulation model for a 2007 6.7 l diesel engine with exhaust gas recirculation (EGR), variable geometry turbocharging (VGT), and common rail fuel injection was validated after extensive experimentation. This model was used to develop...

...Ming-Feng Hsieh; Junmin Wang; Marcello Canova This paper describes a two-level nonlinear model predictive control (NMPC) scheme for diesel engine lean NO x trap (LNT) regeneration control. Based on the physical insights into the LNT operational characteristics, a two-level NMPC architecture...

...Javad Mohammadpour; Karolos Grigoriadis; Matthew Franchek; Benjamin J. Zwissler In this paper, we present a real-time parameter identification approach for diagnosing faults in the exhaust gas recirculation (EGR) system of Diesel engines. The proposed diagnostics method has the ability to detect...

... larger than in SI engines. This paper documents the results of a research activity focused on the control of the start and stop dynamics of a HEV with a belted starter/alternator. The work was conducted on a production 1.9 l common-rail diesel engine coupled to a 10.6 kW permanent magnet motor...

.... P. , 1965 , Theory of Sampled-Data Control Systems , Wiley , New York . 08 01 2008 01 04 2009 17 08 2009 diesel engines engine cylinders feedback fuel systems neurocontrollers position control pressure control pressure sensors principal component analysis...

... the properties of the fuel blend can be estimated accurately, on-vehicle, in real-time. To this end, this paper presents a method to practically estimate the biodiesel content of fuel being used in a diesel engine during steady-state operation. The simple generalizable physically motivated estimation strategy...

...Alok A. Joshi; Peter Meckl; Galen King; Kristofer Jennings A novel information-theoretic stepwise feature selector (ITSFS) is designed to reduce the dimension of diesel engine data. This data consist of 43 sensor measurements acquired from diesel engines that are either in a healthy state or in one...

...Alok A. Joshi; Scott James; Peter Meckl; Galen King; Kristofer Jennings Degradation in the cooling effectiveness of a charge-air cooler (CAC) in a medium-duty turbocharged diesel engine has significant impact on engine performance. This degradation lowers the boost pressure and raises the intake...

.... In this context, these valves control the turbocharger operation in a two-stage sequential turbocharged diesel engine. With the purpose of providing the model with information, several characterization tests of the elements that integrate the vacuum system were performed. Related to the theoretical contents, two...

.... , and Edwards , C. E. , 2005 , “ Strategies for Achieving Residual-Effected Homogeneous Charge Compression Ignition Using Variable Valve Actuation ,” SAE Paper No. 2005-01-0165. 12 12 2005 29 02 2008 05 12 2008 combustion diesel engines engine cylinders exhaust systems...

... combustion can be implemented in direct injection diesel engines without major modifications by introducing a specialized fuel injector in the intake port. This decouples the homogeneous mixture formation from the traditional in-cylinder injection, thus providing two fueling systems that can be used...

... 0.3213 − 0.0719 [0 0.1436 0.7152 0   [ 0 ] . 10 − 3 4.4911 0.0136 30 10 2006 19 05 2008 25 09 2008 combustion control system synthesis diesel engines air-fuel ratio weighted local linear ARX models weighting function...

...Giampiero Campa; Manoharan Thiagarajan; Mohan Krishnamurty; Marcello R. Napolitano; Mridul Gautam This paper presents the design of a complete sensor fault detection, isolation, and accommodation (SFDIA) scheme for heavy-duty diesel engines without physical redundancy in the sensor capabilities...