{"id":19438,"date":"2022-03-14T16:48:35","date_gmt":"2022-03-14T08:48:35","guid":{"rendered":"https:\/\/hongtronics.com\/?p=19438"},"modified":"2024-07-11T14:47:06","modified_gmt":"2024-07-11T06:47:06","slug":"jcb-js220-egr-problems","status":"publish","type":"post","link":"https:\/\/hongtronics.com\/en\/jcb-js220-egr-problems\/","title":{"rendered":"Pico Automotive Oscilloscope Diagnostics] 2007 JCB JS220 Excavator | EGR Valve Failure"},"content":{"rendered":"

By Ben Martins<\/p>\n\n\n\n

Introduction:<\/u><\/strong><\/h2>\n\n\n\n

\u6211\u6700\u8fd1\u6ce8\u610f\u5230Pico\u505a\u7684\u4e8b\u60c5\u8b8a\u5f97\u76f8\u7576\u591a\u6a23\u5316\u3002\u96d6\u7136\u4e3b\u8981\u5e02\u5834\u662f\u6c7d\u8eca\u9818\u57df\uff0c\u4f46PicoScope\u4e5f\u7d93\u5e38\u61c9\u7528\u5728\u5176\u4ed6\u884c\u696d\u3002\u96a8\u8457\u4e0d\u540c\u7684\u6848\u4f8b\u51fa\u73fe\uff0c\u6709\u6a5f\u6703\u5728\u5927\u578b\u6316\u571f\u6a5f\u4e0a\u5ea6\u904e\u4e00\u5929\u4e5f\u662f\u4e00\u500b\u4e0d\u5bb9\u8a31\u932f\u5931\u7684\u826f\u597d\u6a5f\u6703\u3002<\/p>\n\n\n\n

\u5ba2\u6236\u63cf\u8ff0\uff1a<\/u><\/strong><\/u><\/strong><\/h2>\n\n\n\n

\u5ba2\u6236\u56de\u5831\u7576\u6316\u571f\u6a5f\u904b\u8f49\u6642\u5f15\u64ce\u6703\u5192\u9ed1\u7159\uff0c\u91cd\u8ca0\u8f09\u4e0b\u5f15\u64ce\u6703\u7184\u706b\u3002<\/p>\n\n\n\n

\u6280\u8853\u8aaa\u660e\uff1a<\/u><\/strong><\/h2>\n\n\n\n

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\u5de5\u4f5c\uff1a<\/u><\/strong><\/h2>\n\n\n\n

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\"\"<\/figure><\/div>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n

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\u5728\u67e5\u770b\u516b\u7ddaEGR\u4e4b\u524d\uff0c\u6211\u8a8d\u70ba\u6709\u5fc5\u8981\u8abf\u67e5\u4e00\u4e9b\u95dc\u65bc\u5f15\u64ce\u52d5\u529b\u4e0d\u8db3\u7684\u76f8\u95dc\u8a0a\u865f\u3002<\/p>\n\n\n\n

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\u8a3a\u65b7\u904e\u7a0b\uff1a<\/u><\/strong><\/h2>\n\n\n\n

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\"\"<\/figure>\n\n\n\n
  1. \u66f2\u8ef8\u4f4d\u7f6e\u611f\u77e5\u5668<\/strong><\/li>
  2. \u66f2\u8ef8\u6578\u5b78\u901a\u9053\u8a08\u7b97RPM<\/strong><\/li>
  3. \u5f15\u64ce\u8f49\u901f\u4e0b\u964d\u4ee3\u8868\u5f15\u64ce\u7184\u706b<\/strong><\/li>
  4. MAP\u611f\u77e5\u5668<\/strong><\/li>
  5. WPS500X\u611f\u6e2c\u9032\u6c23\u5c90\u7ba1\u58d3\u529b<\/strong><\/li>
  6. \u7b2c\u4e00\u7f38\u5674\u6cb9\u5634\u96fb\u6d41<\/strong><\/li><\/ol>\n\n\n\n

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    \"\"<\/figure><\/div>\n\n\n\n

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    \"\"<\/figure><\/div>\n\n\n\n

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    \"\"<\/figure><\/div>\n\n\n\n

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    \"\"<\/figure>\n\n\n\n
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    5. EGR \u8a0a\u865f3<\/strong><\/li><\/ol>\n\n\n\n

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      \"\"<\/figure><\/div>\n\n\n\n
      \"\"<\/figure><\/div>\n\n\n\n

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      \u7d50\u8ad6\uff1a<\/strong><\/h2>\n\n\n\n

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      \"\"<\/figure>\n\n\n\n
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      2. \u6a19\u5c3a\u8a0a\u606f<\/strong><\/li>
      3. MAP\u611f\u77e5\u5668<\/strong><\/li><\/ol>\n\n\n\n

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        \"\"<\/figure>\n\n\n\n
        \"\"<\/figure><\/div>\n\n\n\n

        \u56e0\u6b64\uff0c\u4f60\u73fe\u5728\u53ef\u4ee5\u770b\u5230\u5728\u5f15\u64ce\u8f49\u901f\u589e\u52a0\u6642\u770b\u5230\u8a0a\u865f\u8b8a\u5316\uff0c\u4f7f\u6642\u5f15\u64ce\u4e26\u6c92\u6709\u65bd\u52a0\u8ca0\u8f09\uff0c\u4f46\u53ef\u4ee5\u80af\u5b9a\u7684\u662fEGR\u6b63\u5728\u88ab\u547d\u4ee4\u4e14\u4f4d\u7f6e\u611f\u77e5\u5668\u7684\u8a0a\u865f\u6709\u53cd\u994b\u3002\u6211\u60f3\u5f9e\u4e0a\u65b9\u7684\u53cd\u994b\u4f60\u53ef\u4ee5\u770b\u5230\u7b2c\u4e09\u9ede\u7684\u901a\u9053C\u662fEGR\u95a5\u7684\u4f4d\u7f6e\u53cd\u994b\u8a0a\u865f\uff0c\u7b2c\u4e8c\u9ede\u7684\u901a\u9053B\u662fEGR\u7684\u547d\u4ee4\u8a0a\u865f\u3002\u5982\u679c\u4e0d\u662f\u96fb\u58d3\u8b80\u6578\uff0c\u5b83\u53ef\u80fd\u6703\u662f\u76f8\u53cd\u7684\u3002<\/p>\n\n\n\n

        \u901a\u9053B\u662f28V\uff0c\u8868\u793a\u4f5c\u52d5\uff1b\u901a\u9053C\u662f5V\uff0c\u6211\u5c07\u5176\u806f\u60f3\u5230\u611f\u77e5\u5668\u3002\u6211\u5728\u9019\u88e1\u7d14\u7cb9\u662f\u6839\u64da\u7d93\u9a57\u505a\u51fa\u5047\u8a2d\uff0c\u53ef\u80fd\u662f\u932f\u8aa4\u7684\u3002\u5982\u679c\u6709\u4eba\u53ef\u4ee5\u652f\u6301\u9019\u4e00\u500b\u90e8\u5206\uff0c\u5c07\u611f\u6fc0\u4e0d\u76e1\uff0c\u8acb\u5728\u4e0b\u65b9\u8a55\u8ad6\u7559\u8a00! <\/p>\n\n\n\n

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