Development of Turbocharger for Improving Passenger Car Acceleration

Abstract

<div class="htmlview paragraph">Recently, passenger cars require better acceleration from low engine speed including starting-up in order to decrease the amount of paticulate matter (PM) of diesel engines or to improve the driver's feeling. However, turbocharged cars generally have worse response than the non turbo cars because it takes a few seconds to get the turbocharger rotate up to high speed, usually called “Turbo-lag”. In order to solve this, various technologies have been developed for a turbocharger itself as well as for charging system such as the sequential system. Here in this paper, we focus on the development of the following turbocharger technology to reduce Turbo-lag and to achieve better transient response.</div> <div class="htmlview paragraph"> <ol class="list nostyle"> <li class="list-item"> <span class="li-label">1.</span> <div class="htmlview paragraph">MIXED-FLOW TURBINE IMPELLER</div> </li> <li class="list-item"> <span class="li-label">2.</span> <div class="htmlview paragraph">TWIN ENTRY TURBINE HOUSING</div> </li> <li class="list-item"> <span class="li-label">3.</span> <div class="htmlview paragraph">BALL BEARING SYSTEM</div> </li> <li class="list-item"> <span class="li-label">4.</span> <div class="htmlview paragraph">SEPARATED THRUST BEARING SYSTEM</div> </li> </ol> <figure id="F1" class="figure"> <div class="graphic-wrapper"><img class="article-figure figure" src="960018_fig0001.jpg" alt="No Caption Available"/></div> </figure> </div>