The Design and Testing of a Computer-Controlled Cooling System for a Diesel-Powered Truck

Abstract

<div class="htmlview paragraph">The hardware and software for a prototype computer controlled cooling system for a diesel powered truck has been designed and tested.</div> <div class="htmlview paragraph">The basic requirements for this system have been defined and the control functions, previously investigated in a study using the computer simulation model, were incorporated into the software.</div> <div class="htmlview paragraph">Engine dynamometer tests on the MACK-676 engine, comparing the conventional cooling system and the computer controlled system, showed the following advantages of the computer controlled system: <ol class="list nostyle"> <li class="list-item"> <span class="li-label">1.</span> <div class="htmlview paragraph">The temperature level to which the engine warms up to at low ambient temperature, was increased.</div></li> <li class="list-item"> <span class="li-label">2.</span> <div class="htmlview paragraph">The faster shutter response reduced the temperature peaks and decreased total fan activity time.</div></li> <li class="list-item"> <span class="li-label">3.</span> <div class="htmlview paragraph">The faster fan response reduces fan engagement time which should improve truck fuel economy.</div></li></ol></div>