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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=115533&size=small" /></div> <h1 class="ph">廉价激光装置取代汽车火花塞 </h1> <p class="xg1"> 时间：2011-5-3 17:54<a class="zz" href="home.php?mod=space&uid=115533">作者：娆娆</a> 阅读<em id="_viewnum">(1103)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=1990&idtype=aid" title="查看全部评论"><em id="_commentnum">2</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>自从汽车发明以来的150年间，火花塞的地位一直不可动摇，不过现在这种情况可能即将改变，据英国《每日邮报》报道，研究人员表示，激光器有望取代汽车内部的火花塞，从而让引擎更加环保。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">自从汽车发明以来的150年间，火花塞的地位一直不可动摇，不过现在这种情况可能即将改变，据英国《每日邮报》报道，研究人员表示，<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器有望取代汽车内部的火花塞，从而让引擎更加环保。<BR><BR>在下个月即将于美国巴尔的摩召开的激光与<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>光学会议上，来自罗马尼亚和日本的研究人员将详细报告他们的这一成果，即采用廉价的激光装置可以实现汽车引擎气缸内燃料-空气混合体的点燃。<BR><BR>目前他们正在和火花塞的生产厂家进行协商，如果这一成果得以投入应用，它将有可能造成汽车引擎界的革命。<BR><BR>从<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>上说，这种新方法可以实现更高效率的引燃，从而减少燃烧不完全造成的污染。火花塞只能在触发器附近点燃燃料-空气混合体，这会影响燃料的整体燃烧效率。火花塞还有一个最致命的缺点，那就是随着使用年限的增加，其金属表面会逐渐磨损。<BR><BR> <P><A href="http://www.oecr.com/data/attachment/portal/201105/03/175311cjj3c6cooq69ag8a.jpg" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201105/03/175311cjj3c6cooq69ag8a.jpg"></A></P>在此之前也有很多研究人员尝试过使用激光器代替火花塞，这是一个元老级的部件，自从150年前汽车出现以来，火花塞的地位一直不可动摇。<BR><BR>不幸的是，他们的研究都没有取得成功。他们发现激光装置太过笨重，效率低下并且很不稳定。<BR><BR>然而，来自日本和罗马尼亚的工程师们相信他们已经找到了一种方法，可以集中两到三束激光照射到引擎气缸内不同的深度。这一进展增加了燃烧的完全度，并避免了磨损的问题。不过它也有缺点，那就是它需要很高的能量供给，以便产生激光。<BR><BR>来自日本冈山自然科学研究所的Takunori Taira告诉BBC记者：“过去，激光的用途被局限在基础科学研究领域，因为激光设备笨重，效率低下并且不够稳定。并且它们不能远离引擎，因为它们发出的强大光束将毁坏任何光纤，而这是是用于将光束传递至气缸中的。”<BR><BR>而此次研究团队尝试开发出了一种陶瓷粉末激光器，其大小相当于一个火花塞，从而允许它嵌入汽缸中。这是一种设计独特的激光装置，它能以较低能级的激光为基础产生高能激光束。<BR><BR>科学家们还发现，和一般用于产生高能激光的脆弱<a href="http://material.oecr.com" target="_blank" class="relatedlink">晶体</a>不同，陶瓷更坚固，可以承受引擎内部的高热环境。<BR><BR>他们目前正在与日本电装株式会社进行接触，这是一家领先的汽车部件生产商。研究团队希望借此使这项技术实现商业化。</td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" 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c="1">lcj214</a> <span class="xg1 xw0">2011-9-19 23:03</span> </dt> <dd>科技引领未来。。。。。。激光点火。。。。</dd> </dl><a name="comment_anchor_293"></a> <dl id="comment_293_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(293, '1990');">引用</a> </span> <a href="http://club.oecr.com/space-uid-8802.html" class="xi2 xw1" c="1">xfx9721</a> <span class="xg1 xw0">2011-5-4 08:23</span> </dt> <dd>为啥替代，而不是先备用 、、、、</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="framepeEZDd" class="sy_ltdr frame move-span cl frame-1"><div class="frame-title title"><span class="titletext">社区成员推荐</span></div><div id="framepeEZDd_left" class="column frame-1-c"><div id="framepeEZDd_left_temp" class="move-span temp"></div><div id="portal_block_910" class="cl_block_bm block 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