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src="https://tyunfile.71360.com/WaterMark/UploadFile/hotpow/637193603427441407/2163761.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="uo8i8ig" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/hotpow/637193603427441407/2163761.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vp2lvz8" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>上海krom點火電極-點火棒</p><p><span>***更新：</span>2020-05-31 14:00:49</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="u2o72gd" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上?；⒉╇娮涌萍加邢薰?/a></p><p><span>聯(lián)系人：</span>陳經理</p><p><span>郵箱: </span>hotpow01@163.com</p><p><span>電話: </span>13818025483</p><p><span>傳真: </span>021_50877705</p><p><span>網址: </span></p><p><span>手機: </span>021-68065611</p><p><span>地址: </span>楊高南路5998號三樓東面</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="pz7limw" class="page-proshow02"><p class="title">詳細說明</p><div id="zetv8yv" class="box"><p><p> 點火電極雖然只是一個小零件，但它卻極其重要，沒有它發(fā)動機會動彈不得。由于汽油的燃點較高(約400度左右)，因而需要使用強制點火方式點燃混合氣。在燃燒室內產生火花，上海krom點火電極-點火棒，點燃混合汽產生動力通過電極之間的放電現(xiàn)象產生火花，上海krom點火電極-點火棒，汽油發(fā)動機是通過燃料和混合氣體的適時燃燒使之產生動力，但是作為燃料的汽油即使處于高溫環(huán)境下也很難自燃，要想使其適時燃燒有必要用“火”來點燃。這里說的火花點火便是“點火電極”的作用。密封點火電極孔，以維持汽缸內的壓力通常從點火線圈透過分電盤經導線而供給點火電極的高壓電約2萬至3萬伏特，再加上點火電極的電極必須經常處于高溫的燃燒室中與約45倍大氣壓力以上的環(huán)境，上海krom點火電極-點火棒，而且還要保持極高的氣密性。因此，在如此這般惡劣的環(huán)境中，點火電極的品質好壞與耐用性將會直接影響引擎的性能表現(xiàn)，所以不可不重視。 </p> <p> <br /> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海krom點火電極-點火棒" src="https://tyunfile.71360.com/WaterMark/UploadFile/hotpow/637193603427441407/2163761.jpg"></div><p> 溫度要求：點火電極絕緣體裙部（指點火電極中心電極外面的絕緣體錐形部分）直接與燃燒室內的高溫氣體接觸而吸收大量的熱，吸入的熱量通過外殼分別傳到汽缸蓋和大氣中。實驗表明，要保證汽車發(fā)動機正常工作，點火電極絕緣體裙部應保持500～600℃的溫度（這一溫度稱點火電極的自潔溫度），若溫度低于此值，則將會在絕緣體裙部形成積碳而引起電極間漏電，影響點火電極跳火。若絕緣體溫度過高（超過900℃），則混合氣與這樣熾熱的絕緣體接觸時，將發(fā)生熾熱點火，從而導致發(fā)動機早燃。點火電極正常工作的溫度在450～870℃之間。這時點火電極呈黃褐色。如果點火電極工作溫度長期低于450℃，點火電極周圍會有很多積碳，點火電極呈黑色。 </p> <p> <br /> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海krom點火電極-點火棒" src="https://tyunfile.71360.com/WaterMark/UploadFile/hotpow/637193603390849610/333261.jpg"></div><p> 點火電極采用鈦金屬表層處理，鋁金屬鋼針、高溫防裂95陶瓷材料，適應1500度以上的長期燃燒及帶風力磨損的條件下不損壞、變形、氧化。在高電壓的作用下，點火電極中心電極與側電極間的空氣將迅速發(fā)生電離作用，形成帶正電的離子和帶負電的自由電子。當電極間的電壓達到一定值時，氣體中的離子、電子數(shù)目像雪崩一樣增加，從而使空氣失去絕緣性，間隙便形成放電通道，發(fā)生“擊穿”現(xiàn)象。此時，氣體形成發(fā)光體，即“火花”。伴隨其受熱膨脹，還發(fā)生“啪啪”聲響。這種電火花的溫度可高達2000～3000℃，足以點燃氣缸燃燒室內的混合氣. </p> <p> <br /> </p> <p> <br /> </p><div 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