The purpose of this article is to describe the design of a limited stroke actuator and the corresponding prototype to drive a Low Pressure (LP) Exhaust Gas Recirculation (EGR) valve for use in Internal Combustion Engines (ICEs). The direct drive actuator topology is an axial flux machine with two air gaps in order to minimize the rotor inertia and a bipolar surface-mounted permanent magnet in o...

This paper presents an experimental study of a 4-cylinder, downsized and boosted, spark ignition engine fuelled by either directly injected compressed natural gas (DI CNG) or gasoline (GDI). Three different charge preparation strategies are investigated for both fuels: stoichiometric operation without external dilution, with exhaust recirculation (EGR) lean burn. The performance the optimized D...

This paper investigates options to complement a diesel engine airpath feedback controller with feedforward. The control objective is track the intake manifold pressure and exhaust gas recirculation (EGR) rate targets by manipulating EGR valve variable geometry turbine (VGT) while satisfying state input constraints. based on rate-based Model Predictive Control (MPC) that provides integral action...

This paper presents a comprehensive optimization approach for enhancing the performance of methanol/diesel Exhaust Gas Recirculation (EGR) engine. Initially, hybrid fuel engine combustion chamber model was developed using AVL-FIRE software, and simulated results were compared with values obtained from bench tests. An orthogonal experimental design employed to optimize five key factors, namely m...

Homogeneous charge compression ignition (HCCI) seems to be the most promising solution for gasoline engines in the light of future emissions regulations. This novel combustion technique allows for significant reduction of fuel consumption and engine-out NOX emissions at low and medium engine load/speed conditions. High heat release rate enables realization of the Otto cycle close to ideal, incr...

Low fuel consumption is one of the greatest merits of the Diesel engine, emission of nitrous oxides, NOx, and particulate matter, PM, are its most prominent disadvantages. For modern passenger car diesel engines, to achieve low fuel consumption targets, i.e. CO2 emissions, and to simultaneously fulfil the ambitious EU6 emissions legislation, a combination of intelligent injection strategies and...

Abstract This study aims to assess the performance of compression ignition (CI) engine powered with various biodiesels. The used for this test was a single-cylinder, water-cooled, naturally aspirated, CI engine. biodiesels in were neem methyl ester (NME), mahua (MME), cottonseed (CME), tamanu (TME) and Albizia saman (AME). According results, TME-operated had 2.69%, 10.53%, 6.31% 5.49% higher br...