Determination of Weak Knock Characteristics for Two-Stroke Spark Ignition UAV Engines Based on Mallat Decomposition Algorithm

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Items</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Engine type</td><td class="align_center">Two-stroke SI engine</td></tr><tr><td class="align_left">Intake style</td><td class="align_center">Reed valve</td></tr><tr><td class="align_left">Stroke (mm)</td><td class="align_center">69</td></tr><tr><td class="align_left">Bore (mm)</td><td class="align_center">76</td></tr><tr><td class="align_left">Displace (cm<sup>3</sup>)</td><td class="align_center">625</td></tr><tr><td class="align_left">Geometric compression ratio</td><td class="align_center">9.5</td></tr><tr><td class="align_left">Exhaust port opening (CA ATDC)</td><td class="align_center">88</td></tr><tr><td class="align_left">Scavenging port opening (CA ATDC)</td><td class="align_center">122</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Specifications of the test engine.</div>

Mathematical Problems in Engineering

tab1

Table 1

Table 1: Determination of Weak Knock Characteristics for Two-Stroke Spark Ignition UAV Engines Based on Mallat Decomposition Algorithm 