Modeling and Experimental Investigation of a 2-Stroke GDI Engine for Range Extender Applications

Abstract

<div class="section abstract"><div class="htmlview paragraph">The basic requirements for range extender engines are low cost, compact dimensions, high specific power, good efficiency, low pollutant emission levels, excellent NVH behavior. For a power rate lower than 30 kW, it is very difficult to find an off-the-shelf engine meeting all the requirements listed above, so that a new generation of dedicated engines is under development.</div><div class="htmlview paragraph">Following a preliminary theoretical work presented in 2012 [<span class="xref">1</span>], the current paper reviews the design process and the first experimental tests carried out on a novel 2-stroke GDI single-cylinder engine, rated at 30 kW at 4500 rpm, featuring a patented induction valve and a piston pump for scavenging. A prototype has been designed with the support of CFD simulations, then built and tested at the BRC laboratories, in Cherasco (Italy).</div></div>