Although the exhaust gas recirculation (EGR) technology has been proven effective to decrease marine engine’s nitrogen oxides (NOx) emissions, it is associated with a considerable fuel consumption increase and challenges engine–turbocharger matching. This study aims parametrically optimise EGR turbocharging system settings of large two-stroke engine objective obtaining highest efficiency whilst...

The use of alternative fuels in ships faces the dual challenge emission regulations and cost use. In this paper, impact biodiesel blends from cooking waste as a carbon-neutral fuel for inland waterway vessels was investigated. software AVL FIRE used to simulate detailed chemical combustion process marine diesel engine running on D100 (pure diesel), B5 (5% by volume), B10 (10% B15 (15% volume). ...

This article presents a systematic approach to realize highly dynamic control strategies for the air path of diesel engines. It is based on grey-box models individual components, designed be applied in nonlinear model predictive (NMPC). Specifically, they are suited algorithmic differentiation and gradient-based optimization. modular allows derive variety complex systems can identified with low...

Combined Energy and Emission Management (CEEM) problems are a class of optimal control that aim to minimize operational costs (hybrid electric) powertrains with after-treatment system subject constraints on emissions imposed by legislation. In this paper, parallel-hybrid heavy-duty vehicle Variable Turbine Geometry (VTG) an Exhaust-Gas Recirculation (EGR) is considered. The CEEM problem solved ...

Homogeneous charge compression ignition technology has exhibited high potential to reduce fuel consumption and NOx emissions over normal spark-ignition engines significantly. Optimized kinetic process technology is implemented to realize homogeneous charge compression ignition combustion in a port fuel injection gasoline engine. The combustion and emission characteristics are investigated with ...

A turbulent side-wall quenching (SWQ) flame in a fully developed channel flow is studied using Large-Eddy Simulation (LES) with tabulated chemistry approach. Three different flamelet manifolds increasing levels of complexity are applied: the Flamelet-Generated Manifold (FGM) considering varying enthalpy levels, Quenching (QFM), and recently proposed Exhaust Gas Recirculation (QFM-EGR), purpose ...

The divided exhaust period (DEP) concept was applied to a high-efficiency gasoline engine and its impact on various performance aspects were investigated. To this end, key design parameters of DEP components optimized through 1-D simulation. designed fabricated experimental verification performed an dynamometer test. developed shows suitable for electrified vehicles, with maximum thermal effici...