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	<title>六六互联 &#187; 原理</title>
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		<title>空燃比的闭环控制工作原理和工作条件</title>
		<link>https://www.kfxxgc.com/archives/428</link>
		<comments>https://www.kfxxgc.com/archives/428#comments</comments>
		<pubDate>Sat, 23 Apr 2022 12:06:23 +0000</pubDate>
		<dc:creator><![CDATA[zhushican]]></dc:creator>
				<category><![CDATA[六六互联]]></category>
		<category><![CDATA[原理]]></category>
		<category><![CDATA[工作]]></category>
		<category><![CDATA[工作原理]]></category>
		<category><![CDATA[工作条件]]></category>
		<category><![CDATA[条件]]></category>
		<category><![CDATA[空燃比]]></category>
		<category><![CDATA[空燃比的闭环控制]]></category>
		<category><![CDATA[闭环控制]]></category>

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		<description><![CDATA[空燃比的闭环控制工作原理和工作条件 【工作原理】装用TWC后，一般采用氧传感器检测废气中氧含量的变化，并将此信 <span class="ellipsis">&#8230;</span> <span class="more-link-wrap"><a href="https://www.kfxxgc.com/archives/428" class="more-link"><span>Read More &#8594;</span></a></span>]]></description>
				<content:encoded><![CDATA[<p><strong>空燃比的闭环控制工作原理和工作条件</strong><br />
【工作原理】装用TWC后，一般采用氧传感器检测废气中氧含量的变化，并将此信号输入ECU，判断实际进入气缸的混合气空燃比，再通过ECU与设定的目标空燃比进行比较，根据误差修正喷油量，这就是发动机空燃比的闭环控制。<br />
<a href="/wp-content/uploads/2022/04/20220423200345.jpg"><img class="alignnone size-full wp-image-429" src="/wp-content/uploads/2022/04/20220423200345.jpg" alt="20220423200345" width="815" height="418" /></a><br />
【工作条件】在带氧传感器的EFI系统中，并不是所有工况都进行闭环控制。在起动、怠速（？）、暖机、加速、全负荷、加速断油等工况下，发动机不可能以理论空燃比工作，此时仍采用开环控制方式。<br />
<a href="/wp-content/uploads/2022/04/20220423200356.jpg"><img class="alignnone size-full wp-image-430" src="/wp-content/uploads/2022/04/20220423200356.jpg" alt="20220423200356" width="819" height="430" /></a></p>
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		<title>光电式凸轮轴/曲轴位置传感器的组成、原理和检测</title>
		<link>https://www.kfxxgc.com/archives/390</link>
		<comments>https://www.kfxxgc.com/archives/390#comments</comments>
		<pubDate>Sat, 23 Apr 2022 11:13:27 +0000</pubDate>
		<dc:creator><![CDATA[zhushican]]></dc:creator>
				<category><![CDATA[六六互联]]></category>
		<category><![CDATA[传感器]]></category>
		<category><![CDATA[光电式凸轮轴]]></category>
		<category><![CDATA[原理]]></category>
		<category><![CDATA[曲轴位置传感器]]></category>
		<category><![CDATA[检测]]></category>
		<category><![CDATA[组成]]></category>

		<guid isPermaLink="false">http://www.gzgoodway.com.cn/?p=390</guid>
		<description><![CDATA[光电式凸轮轴/曲轴位置传感器 组成：由转子、发光二极管、光敏二极管和放大器组成。 原理：利用发光二极管作为信号 <span class="ellipsis">&#8230;</span> <span class="more-link-wrap"><a href="https://www.kfxxgc.com/archives/390" class="more-link"><span>Read More &#8594;</span></a></span>]]></description>
				<content:encoded><![CDATA[<p><strong>光电式凸轮轴/曲轴位置传感器</strong><br />
<strong>组成：</strong>由转子、发光二极管、光敏二极管和放大器组成。<br />
<a href="/wp-content/uploads/2022/04/1112.jpg"><img class="alignnone size-full wp-image-391" src="/wp-content/uploads/2022/04/1112.jpg" alt="111" width="1090" height="454" /></a><br />
<strong>原理：</strong>利用发光二极管作为信号源。随转子转动，当透光孔与发光二极管对正时，光线照射到光敏二极管上产生电压信号，经放大电路放大后输送给ECU。</p>
<p><strong>检测：</strong>点火开关转至“ON”位置，检测电脑侧1和2端子间电压为12V，给传感器施加12V电压，正在信号输出端子3和4与1之间接上电流表，转动转子一圈，两个电流表应分别摆动1次和4次，电流应约为1mA。<br />
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		<title>霍尔效应式曲轴位置传感器的结构、原理</title>
		<link>https://www.kfxxgc.com/archives/383</link>
		<comments>https://www.kfxxgc.com/archives/383#comments</comments>
		<pubDate>Sat, 23 Apr 2022 11:07:09 +0000</pubDate>
		<dc:creator><![CDATA[zhushican]]></dc:creator>
				<category><![CDATA[六六互联]]></category>
		<category><![CDATA[原理]]></category>
		<category><![CDATA[曲轴位置传感器]]></category>
		<category><![CDATA[结构]]></category>
		<category><![CDATA[霍尔效应式]]></category>
		<category><![CDATA[霍尔效应式曲轴位置传感器]]></category>

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		<description><![CDATA[霍尔效应式曲轴位置传感器的结构、原理 1. 霍尔效应原理 当电流以垂直于磁场方向通过置于磁场中的半导体基片的霍 <span class="ellipsis">&#8230;</span> <span class="more-link-wrap"><a href="https://www.kfxxgc.com/archives/383" class="more-link"><span>Read More &#8594;</span></a></span>]]></description>
				<content:encoded><![CDATA[<p><strong>霍尔效应式曲轴位置传感器的结构、原理</strong><br />
1. 霍尔效应原理<br />
当电流以垂直于磁场方向通过置于磁场中的半导体基片的霍尔元件时，在垂直于电流和磁场的方向上将产生一个与电流和磁场强度成正比的电势 ，即霍尔电势UH :<br />
UH=k IB<br />
当电流I一定，则UH与磁场强度B成正比。<br />
<a href="/wp-content/uploads/2022/04/1111.jpg"><img class="alignnone size-full wp-image-384" src="/wp-content/uploads/2022/04/1111.jpg" alt="111" width="552" height="426" /></a><br />
<a href="/wp-content/uploads/2022/04/2221.jpg"><img class="alignnone size-full wp-image-385" src="/wp-content/uploads/2022/04/2221.jpg" alt="222" width="764" height="545" /></a><br />
2、霍尔传感器工作原理<br />
<a href="/wp-content/uploads/2022/04/3331.jpg"><img class="alignnone size-full wp-image-386" src="/wp-content/uploads/2022/04/3331.jpg" alt="333" width="1015" height="450" /></a><br />
（二）霍尔效应式曲轴位置传感器的检修</p>
<p>1）、点火开关转至“ON”位置，检测A、C之间的电压应为5V，B、C间输出的信号电压应为5V到0V交替变化。<br />
<a href="/wp-content/uploads/2022/04/4441.jpg"><img class="alignnone size-full wp-image-387" src="/wp-content/uploads/2022/04/4441.jpg" alt="444" width="967" height="467" /></a><br />
2）、霍尔传感器输出波形分析<br />
<a href="/wp-content/uploads/2022/04/5551.jpg"><img class="alignnone size-full wp-image-388" src="/wp-content/uploads/2022/04/5551.jpg" alt="555" width="925" height="579" /></a></p>
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