Automotive

Advanced Microsystems for Automotive Applications 2010: by Marco Ottella, Pietro Perlo, Ovidiu Vermesan, Reiner John,

By Marco Ottella, Pietro Perlo, Ovidiu Vermesan, Reiner John, Kees Gehrels, Harald Gall (auth.), Gereon Meyer, Jürgen Valldorf (eds.)

The vehicle of the long run has to satisfy fundamental standards: the super-efficient use of strength and gear and the ultra-safe transportation of individuals and items either beneficial properties are more and more enabled by way of clever, adaptive and context conscious info and verbal exchange applied sciences (ICT), electric or digital elements and platforms instead of completely via the mechanical technique of vintage automobile engineering. the main complicated instance of this pattern is the electrified motor vehicle combining an entire electrical powertrain with thoroughly digital controls like shrewdpermanent energy and effort managers, steer-by-wire applied sciences and clever networking functions. it's been the project of the foreign discussion board on complicated Microsystems for automobile functions (AMAA) for greater than twelve years now to become aware of paradigm shifts and to debate their technological implications at an early degree. for this reason, the subject of the AMAA 2010 is “Smart platforms for eco-friendly automobiles and secure Mobility”. This publication comprises peer-reviewed convention papers awarded on the convention through specialists of significant businesses and best educational associations. They record on ongoing examine and novel advancements within the box of ICT, parts and structures permitting the car and street shipping of the longer term. a selected concentration is on simple applied sciences and complex purposes of electrified and electrical autos, street and passenger protection, motive force suggestions, site visitors administration and powertrain potency. because of this wide insurance of themes concerning sustainability of the car either the AMAA occasion and this booklet serve the spreading of data generated within the framework of the ecu eco-friendly automobiles Initiative. additional info is out there on www.amaa.de.

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The aim of this paper is to point out some results obtained from the energetic model and from the experimental tests performed on the plug-in hybrid electrical vehicle (PHEV), realized, in prototypal version, at the Dipartimento di Meccanica of the Politecnico di Milano [1]. In particular the paper focuses the attentions on the benefits achieved with a Start&Stop energy management strategy. 1 The Prototype of Plug-In HEV First of all, a definition of the proposed plug-in hybrid electric vehicle is needed [2], [3].

Start&Stop Energy Management Strategy for a Plug-In HEV: Numerical Analysis and Experimental Test List of Symbols Fuel consumpted for the cycle considered ρC Average content of carbon in gasoline [9] [g/l] Amount of battery energy consumpted from battery for [%] the cycle considered MmCO2 Molar mass of CO2 [g/mol] Litres of fuel necessary to replace 1% of the battery energy by the ICE [l/%] MmC Carbon molar mass [g/mol] HLHV Lower heating value for gasoline [MJ/kg] ϕ Coefficient for incomplete combustion in ICE [-] Ebatt Amount of energy stored into the battery pack [kWh] European average CO2 emission [8] [g/kWh] ηch Overall efficiency of charging process [-] Cost of fuel [€/l] Cost of electrical energy [€/kWh] cfuel ∆SOC crech f ηPS European percentage of electrical energy produced by fossil sources [8] Average european thermoelectrical power station efficiency [8] Tab.

4. a) Global electric drive efficiency, b) inverter losses, c) torque capability. 35 36 Electrified Vehicles Fig. 5. Stator phase current during transition from constant to field weakening region. A reference simulation has been chosen for comparison where torque reference Tref has been fixed to the motor maximum overload value. ). In this way it is possible to evaluate the efficiency, the inverter losses and torque capability on the overall speed range. In Fig. 4c is shown the maximum torque capability comparison between the standard and reduced losses control.

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