Better Understanding Factors of Impact on Brake System Corner Performance

Abstract

<div class="section abstract"><div class="htmlview paragraph">The automotive industry continues to focus heavily on new electrified mobility strategies. Whether this electrified mobility consists of battery electric vehicles or electrified brake boost systems, there is a level of system sensitivity which presents new challenges throughout the industry during development of a new product. Most specifically in brake system development, much of the critical performance targets that have come along with electrification are cascaded down to the vehicle corner and its component performance. These corner level requirements have transformed to be more stringent in order to improve the overall system efficiency. It is important that the factors which lead to less than desirable performance are identified and understood. Some of the factors that influence the brake system corner performance are driven by multiple components, and this paper will go into identifying & explaining the following.<ul class="list disc"><li class="list-item"><div class="htmlview paragraph">Fluid Displacement Performance/Requirements</div><ol class="list nostyle"><li class="list-item"><span class="li-label">a</span><div class="htmlview paragraph">Potential Factors of Impact in Testing ie:</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Compressibility/Hot Compressibility</div></li><li class="list-item"><span class="li-label">ii</span><div class="htmlview paragraph">Bedding</div></li><li class="list-item"><span class="li-label">iii</span><div class="htmlview paragraph">Rotor Coning</div></li><li class="list-item"><span class="li-label">iv</span><div class="htmlview paragraph">Taper Wear</div></li></ol></li></ol></li><li class="list-item"><div class="htmlview paragraph">Mu Differential Observation/Factors</div><ol class="list nostyle"><li class="list-item"><span class="li-label">a</span><div class="htmlview paragraph">Rotor Manufacturing process change</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Machining insert change</div></li><li class="list-item"><span class="li-label">ii</span><div class="htmlview paragraph">Turned to Ground</div></li></ol></li><li class="list-item"><span class="li-label">b</span><div class="htmlview paragraph">Dynamic</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Dyno Cooling air direction differences</div></li></ol></li><li class="list-item"><span class="li-label">c</span><div class="htmlview paragraph">Static</div></li><li class="list-item"><span class="li-label">d</span><div class="htmlview paragraph">Future Mobility Technology</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Forward vs reverse direction/transfer layer</div></li></ol></li></ol></li></ul></div></div>