{"id":287681,"date":"2024-10-23T08:16:03","date_gmt":"2024-10-23T08:16:03","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287681"},"modified":"2024-11-04T11:25:48","modified_gmt":"2024-11-04T11:25:48","slug":"p20bc-reductant-heater-temperature-sensor-circuit","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20bc-reductant-heater-temperature-sensor-circuit\/","title":{"rendered":"P20BC &#8211; \u8fd8\u539f\u52a0\u70ed\u5668\u6e29\u5ea6\u4f20\u611f\u5668\u7535\u8def"},"content":{"rendered":"<h2 id=\"p20bc-reductant-heater-a-control-circuit-high\">P20BC\uff1a\u8fd8\u539f\u5242\u52a0\u70ed\u5668 A \u63a7\u5236\u7535\u8def\u7535\u538b\u8fc7\u9ad8<\/h2>\n<p>P20BC \u53d1\u52a8\u673a\u4ee3\u7801\u8868\u793a\u8f66\u8f86\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u4e2d\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u5b58\u5728\u95ee\u9898\u3002\u672c\u6587\u4e3a\u5de5\u7a0b\u5e08\u548c\u673a\u68b0\u5e08\u63d0\u4f9b\u4e86\u5168\u9762\u7684\u6280\u672f\u6982\u8ff0\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\u4e2d\uff0c\u6211\u4eec\u6ce8\u610f\u5230 P20BC \u4ee3\u7801\u7ecf\u5e38\u51fa\u73b0\u5728\u6b27\u6d32\u7684\u67f4\u6cb9\u8f66\u578b\u4e2d\uff0c\u7279\u522b\u662f\u90a3\u4e9b\u914d\u5907\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u7684\u8f66\u8f86\u3002\u6211\u4eec\u6700\u5e38\u89c1\u5230\u8fd9\u4e00\u95ee\u9898\u53d1\u751f\u5728\u5965\u8fea\u3001\u5927\u4f17\u548c\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u8f66\u578b\u4e2d\uff0c\u5076\u5c14\u4e5f\u51fa\u73b0\u5728\u5b9d\u9a6c\u548c\u6c83\u5c14\u6c83\u8f66\u578b\u4e0a\u3002\u8be5\u95ee\u9898\u901a\u5e38\u6e90\u4e8e DEF\uff08\u67f4\u6cb9\u6392\u653e\u6db2\uff09\u7cfb\u7edf\u4e2d\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u6216\u5176\u63a7\u5236\u7535\u8def\u3002\u867d\u7136\u6211\u4eec\u4e5f\u5728\u4e00\u4e9b\u7f8e\u6d32\u548c\u4e9a\u6d32\u7684\u8f66\u8f86\u4e2d\u9047\u5230\u8fc7\u6b64\u4ee3\u7801\uff0c\u4f46\u5b83\u5728\u6b27\u6d32\u67f4\u6cb9\u8f66\u4e2d\u66f4\u4e3a\u5e38\u89c1\u3002\u5728\u6211\u4eec\u7684\u7ecf\u9a8c\u4e2d\uff0c\u6839\u672c\u539f\u56e0\u901a\u5e38\u662f\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u6216\u63a5\u7ebf\u95ee\u9898\uff0c\u4f46\u6709\u65f6\u6781\u5bd2\u5929\u6c14\u6761\u4ef6\u4e0b\u7cfb\u7edf\u7684\u989d\u5916\u538b\u529b\u4e5f\u4f1a\u89e6\u53d1\u6b64\u4ee3\u7801\u3002<\/p>\n<\/div>\n<h2 id=\"urgency-and-driving-implications\">\u7d27\u6025\u6027\u548c\u9a7e\u9a76\u5f71\u54cd<\/h2>\n<p>P20BC \u4ee3\u7801\u88ab\u8ba4\u4e3a\u662f\u4e25\u91cd\u95ee\u9898\uff0c\u5e94\u8be5\u53ca\u65f6\u5904\u7406\u3002\u867d\u7136\u8f66\u8f86\u53ef\u80fd\u4ecd\u7136\u53ef\u4ee5\u9a7e\u9a76\uff0c\u4f46\u7ee7\u7eed\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\uff1a<\/p>\n<ul>\n<li>\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d<\/li>\n<li>\u6392\u653e\u8fc7\u591a\u7684\u9ed1\u70df<\/li>\n<li>\u71c3\u6cb9\u6548\u7387\u4e0b\u964d<\/li>\n<li>\u50ac\u5316\u8f6c\u6362\u5668\u53ef\u80fd\u53d7\u635f<\/li>\n<\/ul>\n<p>\u5efa\u8bae\u5c3d\u5feb\u8ba9\u5408\u683c\u6280\u5e08\u68c0\u67e5\u8f66\u8f86\u3002\u867d\u7136\u4e0d\u4e00\u5b9a\u9700\u8981\u53bb\u7ecf\u9500\u5546\uff0c\u4f46\u4f7f\u7528\u5236\u9020\u5546\u7279\u5b9a\u7684\u8bca\u65ad\u5de5\u5177\u53ef\u80fd\u4f1a\u6709\u5e2e\u52a9\u3002<\/p>\n<h2 id=\"code-details\">\u4ee3\u7801\u8be6\u7ec6\u4fe1\u606f<\/h2>\n<p>P20BC \u662f\u9002\u7528\u4e8e\u8bb8\u591a\u914d\u5907 SCR \u7cfb\u7edf\u7684 OBD-II \u67f4\u6cb9\u8f66\u8f86\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\u3002\u5b83\u8868\u793a\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u68c0\u6d4b\u5230\u8fd8\u539f\u5242\u52a0\u70ed\u5668 A \u63a7\u5236\u7535\u8def\u4e0a\u7684\u7535\u538b\u8fc7\u9ad8\u3002<\/p>\n<p>\u867d\u7136\u8fd9\u662f\u901a\u7528\u4ee3\u7801\uff0c\u4f46\u5177\u4f53\u53c2\u6570\u548c\u6545\u969c\u6392\u9664\u6b65\u9aa4\u53ef\u80fd\u56e0\u5236\u9020\u5546\u800c\u5f02\uff0c\u4f8b\u5982\u5965\u8fea\u3001\u96ea\u94c1\u9f99\u3001\u96ea\u4f5b\u5170\u3001\u798f\u7279\u3001\u73b0\u4ee3\u3001\u65e5\u4ea7\u3001\u6807\u81f4\u548c\u5927\u4f17\u3002<\/p>\n<h2 id=\"components-involved\">\u6d89\u53ca\u7684\u7ec4\u4ef6<\/h2>\n<p>\u8be5\u7cfb\u7edf\u4e2d\u7684\u5173\u952e\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\uff1a\u901a\u5e38\u4f4d\u4e8e\u67f4\u6cb9\u6392\u653e\u6db2 (DEF) \u6cb9\u7bb1\u5185<\/li>\n<li>\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668<\/li>\n<li>SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM)<\/li>\n<li>\u76f8\u5173\u63a5\u7ebf\u548c\u8fde\u63a5\u5668<\/li>\n<\/ol>\n<p>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u4e3b\u8981\u529f\u80fd\u662f\u4fdd\u6301 DEF \u5728\u6700\u4f73\u6e29\u5ea6\uff0c\u4ee5\u786e\u4fdd SCR \u7cfb\u7edf\u9ad8\u6548\u8fd0\u884c\u3002<\/p>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>P20BC \u4ee3\u7801\u7684\u6f5c\u5728\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\uff08\u6700\u5e38\u89c1\u539f\u56e0\uff09<\/li>\n<li>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4e2d\u7684\u5f00\u8def\u6216\u77ed\u8def<\/li>\n<li>\u6545\u969c\u7684\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668<\/li>\n<li>SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u6545\u969c\u6216\u7f16\u7a0b\u9519\u8bef<\/li>\n<li>\u7535\u6c14\u8fde\u63a5\u5668\u7684\u8150\u8680\u6216\u635f\u574f<\/li>\n<\/ol>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<p>\u6240\u9700\u5de5\u5177\uff1a<\/p>\n<ul>\n<li>OBD-II \u626b\u63cf\u4eea<\/li>\n<li>\u6570\u5b57\u4e07\u7528\u8868 (DVOM)<\/li>\n<li>\u8f66\u8f86\u7279\u5b9a\u7684\u7535\u8def\u56fe<\/li>\n<\/ul>\n<p>\u9010\u6b65\u8bca\u65ad\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u8fde\u63a5 OBD-II \u626b\u63cf\u4eea\u5e76\u68c0\u7d22\u6240\u6709\u5b58\u50a8\u7684\u4ee3\u7801\u548c\u51bb\u7ed3\u5e27\u6570\u636e\u3002<\/li>\n<li>\u6e05\u9664\u4ee3\u7801\u5e76\u8bd5\u9a7e\u8f66\u8f86\uff0c\u67e5\u770b\u4ee3\u7801\u662f\u5426\u91cd\u65b0\u51fa\u73b0\u3002<\/li>\n<li>\u76ee\u89c6\u68c0\u67e5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7cfb\u7edf\u7684\u7ebf\u675f\u548c\u8fde\u63a5\u5668\u662f\u5426\u6709\u635f\u574f\u3002<\/li>\n<li>\u4f7f\u7528 DVOM \u6d4b\u8bd5 SCR \u63a7\u5236\u7cfb\u7edf\u7684\u7535\u6e90\u7535\u538b\uff08\u5e94\u4e3a\u7535\u6c60\u7535\u538b\uff09\u3002<\/li>\n<li>\u4f7f\u7528\u626b\u63cf\u4eea\u6fc0\u6d3b\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5e76\u6d4b\u91cf\u8f93\u51fa\u63a7\u5236\u7535\u8def\u7535\u538b\u3002<\/li>\n<li>\u5982\u679c\u7535\u538b\u5728\u89c4\u8303\u8303\u56f4\u5185\uff0c\u6d4b\u8bd5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5143\u4ef6\u7684\u7535\u963b\u3002<\/li>\n<li>\u68c0\u67e5\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668\u7684\u8bfb\u6570\u662f\u5426\u51c6\u786e\u3002<\/li>\n<\/ol>\n<h2 id=\"solutions\">\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>\u6839\u636e\u6839\u672c\u539f\u56e0\uff0c\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668<\/li>\n<li>\u4fee\u590d\u6216\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf\u6216\u8fde\u63a5\u5668<\/li>\n<li>\u66f4\u6362\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668<\/li>\n<li>\u66f4\u65b0\u6216\u66f4\u6362 SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM)<\/li>\n<\/ol>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<p>\u4e3a\u4e86\u9632\u6b62\u672a\u6765\u53d1\u751f\u6b64\u95ee\u9898\uff1a<\/p>\n<ol>\n<li>\u5b9a\u671f\u68c0\u67e5\u548c\u6e05\u6d01 SCR \u7cfb\u7edf\u4e2d\u7684\u7535\u6c14\u8fde\u63a5<\/li>\n<li>\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF \u6db2\u4f53\u5e76\u4fdd\u6301\u9002\u5f53\u6db2\u4f4d<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u4efb\u4f55\u4e0e SCR \u7cfb\u7edf\u76f8\u5173\u7684\u8b66\u793a\u706f\u6216\u6027\u80fd\u95ee\u9898<\/li>\n<\/ol>\n<h2 id=\"cost-analysis\">\u6210\u672c\u5206\u6790<\/h2>\n<p>\u9884\u8ba1\u7684\u7ef4\u4fee\u8d39\u7528\uff08\u5305\u62ec\u96f6\u4ef6\u548c\u4eba\u5de5\uff09\uff1a<\/p>\n<ul>\n<li>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u66f4\u6362\uff1a200-600 \u7f8e\u5143\uff08170-510 \u6b27\u5143\uff09<\/li>\n<li>\u63a5\u7ebf\u4fee\u590d\uff1a100-300 \u7f8e\u5143\uff0885-255 \u6b27\u5143\uff09<\/li>\n<li>SCR \u63a7\u5236\u5668\u66f4\u6362\uff1a500-1500 \u7f8e\u5143\uff08425-1275 \u6b27\u5143\uff09<\/li>\n<\/ul>\n<p>\u6ce8\uff1a\u8d39\u7528\u56e0\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u800c\u5f02\u3002<\/p>\n<h2 id=\"diy-repair-guide\">DIY \u4fee\u590d\u6307\u5357<\/h2>\n<p>\u5bf9\u4e8e\u6709\u7ecf\u9a8c\u7684\u673a\u68b0\u5e08\uff1a<\/p>\n<ol>\n<li>\u5b9a\u4f4d DEF \u6cb9\u7bb1\u548c\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u603b\u6210<\/li>\n<li>\u65ad\u5f00\u7535\u6c60\u8fde\u63a5<\/li>\n<li>\u62c6\u5378\u5fc5\u8981\u7684\u90e8\u4ef6\u4ee5\u8fdb\u5165\u52a0\u70ed\u5668<\/li>\n<li>\u65ad\u5f00\u7535\u6c14\u8fde\u63a5<\/li>\n<li>\u62c6\u4e0b\u5e76\u66f4\u6362\u6545\u969c\u52a0\u70ed\u5668<\/li>\n<li>\u91cd\u65b0\u7ec4\u88c5\u5e76\u6e05\u9664\u4ee3\u7801<\/li>\n<li>\u8bd5\u9a7e\u4ee5\u786e\u4fdd\u6b63\u5e38\u8fd0\u884c<\/li>\n<\/ol>\n<p>\u6ce8\u610f\u4e8b\u9879\uff1a\u4f69\u6234\u9002\u5f53\u7684\u5b89\u5168\u88c5\u5907\uff0c\u5e76\u907f\u514d\u76ae\u80a4\u63a5\u89e6 DEF \u6db2\u4f53\u3002<\/p>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<p>P20BC \u4ee3\u7801\u53ef\u80fd\u4f34\u968f\u4ee5\u4e0b\u95ee\u9898\u51fa\u73b0\uff1a<\/p>\n<ul>\n<li>\u5176\u4ed6 SCR \u7cfb\u7edf\u4ee3\u7801\uff08\u4f8b\u5982 P20BD\u3001P20BE\uff09<\/li>\n<li>DEF \u6db2\u4f4d\u6216\u8d28\u91cf\u8b66\u544a<\/li>\n<li>\u4e0e\u53d1\u52a8\u673a\u6027\u80fd\u76f8\u5173\u7684\u4ee3\u7801<\/li>\n<\/ul>\n<h2 id=\"technical-specifications\">\u6280\u672f\u89c4\u8303<\/h2>\n<ul>\n<li>\u6b63\u5e38\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u963b\uff1a\u901a\u5e38\u4e3a 0.5-2.0 \u6b27\u59c6\uff08\u8bf7\u53c2\u8003\u5236\u9020\u5546\u89c4\u683c\uff09<\/li>\n<li>\u5de5\u4f5c\u7535\u538b\uff1a12-14.5V \u76f4\u6d41\u7535<\/li>\n<li>DEF \u51bb\u7ed3\u70b9\uff1a-11\u00b0C\uff0812\u00b0F\uff09<\/li>\n<li>DEF \u6700\u4f73\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\uff1a10-50\u00b0C\uff0850-122\u00b0F\uff09<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u53ca\u65f6\u5f7b\u5e95\u5730\u5904\u7406 P20BC \u4ee3\u7801\uff0c\u5de5\u7a0b\u5e08\u548c\u673a\u68b0\u5e08\u53ef\u4ee5\u786e\u4fdd\u8f66\u8f86 SCR \u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\uff0c\u4fdd\u6301\u6700\u4f73\u6027\u80fd\u548c\u6392\u653e\u63a7\u5236\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-p20bc\">\u5173\u4e8e P20BC \u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>P20BC \u53d1\u52a8\u673a\u4ee3\u7801\u7684\u542b\u4e49\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>P20BC \u8868\u793a\u201c\u8fd8\u539f\u5242\u52a0\u70ed\u5668 A \u63a7\u5236\u7535\u8def\u7535\u538b\u8fc7\u9ad8\u201d\uff0c\u5373\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u68c0\u6d4b\u5230\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u63a7\u5236\u7535\u8def\u4e2d\u5b58\u5728\u8fc7\u9ad8\u7535\u538b\u3002<\/p>\n<h3>\u5904\u7406 P20BC \u4ee3\u7801\u7684\u7d27\u8feb\u6027\u5982\u4f55\uff1f<\/h3>\n<p>P20BC \u4ee3\u7801\u88ab\u8ba4\u4e3a\u662f\u4e25\u91cd\u95ee\u9898\uff0c\u5e94\u8be5\u53ca\u65f6\u5904\u7406\uff0c\u4ee5\u9632\u6b62\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u548c\u50ac\u5316\u8f6c\u6362\u5668\u53ef\u80fd\u53d7\u635f\u3002<\/p>\n<h3>\u643a\u5e26 P20BC \u4ee3\u7801\u53ef\u4ee5\u7ee7\u7eed\u9a7e\u9a76\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u8f66\u8f86\u53ef\u80fd\u4ecd\u7136\u53ef\u4ee5\u9a7e\u9a76\uff0c\u4f46\u4e0d\u5efa\u8bae\u957f\u65f6\u95f4\u9a7e\u9a76\u3002\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u5e76\u5bf9\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u9020\u6210\u635f\u574f\u3002<\/p>\n<h3>P20BC \u662f\u901a\u7528\u4ee3\u7801\u8fd8\u662f\u5236\u9020\u5546\u7279\u5b9a\u4ee3\u7801\uff1f<\/h3>\n<p>P20BC \u662f\u9002\u7528\u4e8e\u8bb8\u591a OBD-II \u8f66\u8f86\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u7279\u522b\u662f\u914d\u5907 SCR \u7cfb\u7edf\u7684\u67f4\u6cb9\u53d1\u52a8\u673a\u3002<\/p>\n<h3>\u54ea\u4e9b\u8f66\u8f86\u54c1\u724c\u901a\u5e38\u4f1a\u51fa\u73b0 P20BC \u4ee3\u7801\uff1f<\/h3>\n<p>\u6b64\u4ee3\u7801\u5728\u5965\u8fea\u3001\u96ea\u94c1\u9f99\u3001\u96ea\u4f5b\u5170\u3001\u798f\u7279\u3001\u73b0\u4ee3\u3001\u65e5\u4ea7\u3001\u6807\u81f4\u548c\u5927\u4f17\u8f66\u578b\u4e2d\u8f83\u4e3a\u5e38\u89c1\u3002<\/p>\n<h3>P20BC \u4ee3\u7801\u6d89\u53ca\u54ea\u4e9b\u7ec4\u4ef6\uff1f<\/h3>\n<p>\u4e3b\u8981\u6d89\u53ca\u7684\u7ec4\u4ef6\u5305\u62ec\u8fd8\u539f\u5242\u52a0\u70ed\u5668\uff08\u901a\u5e38\u4f4d\u4e8e DEF \u6cb9\u7bb1\u4e2d\uff09\u3001\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668\u3001SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u4ee5\u53ca\u76f8\u5173\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\u3002<\/p>\n<h3>P20BC \u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u539f\u56e0\u5305\u62ec\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u3001\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4e2d\u7684\u5f00\u8def\u6216\u77ed\u8def\u3001\u6545\u969c\u7684\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668\u6216 SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u6545\u969c\u3002<\/p>\n<h3>\u643a\u5e26 P20BC \u4ee3\u7801\u65f6\u53ef\u80fd\u51fa\u73b0\u54ea\u4e9b\u75c7\u72b6\uff1f<\/h3>\n<p>\u75c7\u72b6\u53ef\u80fd\u5305\u62ec\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u3001\u6392\u653e\u8fc7\u591a\u7684\u9ed1\u70df\u3001\u71c3\u6cb9\u6548\u7387\u4e0b\u964d\u4ee5\u53ca\u6545\u969c\u6307\u793a\u706f\u70b9\u4eae\u3002<\/p>\n<h3>P20BC \u4ee3\u7801\u5982\u4f55\u8bca\u65ad\uff1f<\/h3>\n<p>\u8bca\u65ad\u901a\u5e38\u6d89\u53ca\u4f7f\u7528 OBD-II \u626b\u63cf\u4eea\u68c0\u7d22\u4ee3\u7801\uff0c\u76ee\u89c6\u68c0\u67e5\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\uff0c\u6d4b\u8bd5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u7684\u7535\u538b\uff0c\u5e76\u6d4b\u8bd5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5143\u4ef6\u7684\u7535\u963b\u3002<\/p>\n<h3>\u8bca\u65ad P20BC \u4ee3\u7801\u9700\u8981\u54ea\u4e9b\u5de5\u5177\uff1f<\/h3>\n<p>\u57fa\u672c\u5de5\u5177\u5305\u62ec OBD-II \u626b\u63cf\u4eea\u3001\u6570\u5b57\u4e07\u7528\u8868 (DVOM) \u548c\u8f66\u8f86\u7279\u5b9a\u7684\u8bca\u65ad\u4fe1\u606f\u3002<\/p>\n<h3>\u6211\u53ef\u4ee5\u81ea\u5df1\u8bca\u65ad\u548c\u4fee\u590d P20BC \u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u4e00\u4e9b\u6709\u7ecf\u9a8c\u7684 DIY \u7231\u597d\u8005\u53ef\u4ee5\u8fdb\u884c\u90e8\u5206\u8bca\u65ad\uff0c\u4f46\u7531\u4e8e SCR \u7cfb\u7edf\u7684\u590d\u6742\u6027\uff0c\u5efa\u8bae\u8fdb\u884c\u4e13\u4e1a\u8bca\u65ad\uff0c\u4ee5\u907f\u514d\u8bef\u8bca\u5bfc\u81f4\u8fdb\u4e00\u6b65\u635f\u574f\u3002<\/p>\n<h3>\u5904\u7406 P20BC \u4ee3\u7801\u7684\u6f5c\u5728\u89e3\u51b3\u65b9\u6848\u6709\u54ea\u4e9b\uff1f<\/h3>\n<p>\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u5305\u62ec\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u3001\u4fee\u590d\u6216\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf\u6216\u8fde\u63a5\u5668\u3001\u66ff\u6362\u8fd8\u539f\u5242\u6e29\u5ea6\u4f20\u611f\u5668\u6216\u66f4\u65b0\/\u66f4\u6362 SCR \u63a7\u5236\u5668\/\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM)\u3002<\/p>\n<h3>\u5982\u4f55\u9884\u9632 P20BC \u4ee3\u7801\u7684\u53d1\u751f\uff1f<\/h3>\n<p>\u5b9a\u671f\u7ef4\u62a4 SCR \u7cfb\u7edf\uff0c\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF \u6db2\u4f53\uff0c\u5e76\u53ca\u65f6\u5904\u7406\u4e0e SCR \u7cfb\u7edf\u76f8\u5173\u7684\u8b66\u793a\u706f\uff0c\u53ef\u4ee5\u5e2e\u52a9\u9884\u9632\u6b64\u95ee\u9898\u3002<\/p>\n<h3>\u4fee\u590d P20BC \u4ee3\u7801\u95ee\u9898\u7684\u4f30\u8ba1\u6210\u672c\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590d\u8d39\u7528\u56e0\u6839\u672c\u539f\u56e0\u548c\u8f66\u8f86\u54c1\u724c\/\u578b\u53f7\u800c\u5f02\uff0c\u96f6\u4ef6\u548c\u4eba\u5de5\u8d39\u7528\u901a\u5e38\u5728 200 \u5230 1500 \u7f8e\u5143\uff08170 \u5230 1275 \u6b27\u5143\uff09\u4e4b\u95f4\u3002<\/p>\n<h3>P20BC \u4ee3\u7801\u901a\u5e38\u4f1a\u4f34\u968f\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\u51fa\u73b0\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u5176\u4ed6 SCR \u7cfb\u7edf\u4ee3\u7801\uff0c\u5982 <a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20bc-reductant-heater-temperature-sensor-circuit\/\" title=\"P20BC \u4ee3\u7801\u901a\u5e38\u4f1a\u4f34\u968f\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\u51fa\u73b0\uff1f\">P20BC \u4ee3\u7801\u901a\u5e38\u4f1a\u4f34\u968f\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\u51fa\u73b0\uff1f<\/a> \u548c P20BE\uff0c\u53ef\u80fd\u4f1a\u4e0e P20BC \u4e00\u8d77\u51fa\u73b0\u3002<\/p>\n<h3>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5728 SCR \u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u4fdd\u6301 DEF \u5728\u6700\u4f73\u6e29\u5ea6\uff0c\u4ee5\u786e\u4fdd SCR \u7cfb\u7edf\u9ad8\u6548\u8fd0\u884c\u3002<\/p>\n<h3>\u5929\u6c14\u6761\u4ef6\u662f\u5426\u4f1a\u5f71\u54cd P20BC \u4ee3\u7801\u7684\u51fa\u73b0\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u6781\u51b7\u5929\u6c14\u53ef\u80fd\u4f1a\u89e6\u53d1\u6b64\u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u9700\u8981\u66f4\u52a0\u52aa\u529b\u7ef4\u6301 DEF \u6e29\u5ea6\u65f6\u3002<\/p>\n<h3>\u662f\u5426\u53ef\u4ee5\u5728\u672a\u4fee\u590d\u6839\u672c\u95ee\u9898\u7684\u60c5\u51b5\u4e0b\u6e05\u9664 P20BC \u4ee3\u7801\uff1f<\/h3>\n<p>\u4e0d\u5efa\u8bae\u5728\u672a\u4fee\u590d\u6839\u672c\u95ee\u9898\u7684\u60c5\u51b5\u4e0b\u6e05\u9664\u4ee3\u7801\uff0c\u56e0\u4e3a\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u66f4\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u5e76\u5bf9 SCR \u7cfb\u7edf\u9020\u6210\u635f\u574f\u3002<\/p>\n<h3>P20BC \u4ee3\u7801\u5982\u4f55\u5f71\u54cd\u8f66\u8f86\u7684\u6392\u653e\uff1f<\/h3>\n<p>\u6b64\u4ee3\u7801\u8868\u660e SCR \u7cfb\u7edf\u5b58\u5728\u95ee\u9898\uff0c\u800c\u8be5\u7cfb\u7edf\u5bf9\u51cf\u5c11\u67f4\u6cb9\u8f66\u8f86\u4e2d\u7684\u6709\u5bb3\u6392\u653e\u81f3\u5173\u91cd\u8981\u3002\u5982\u679c\u4e0d\u89e3\u51b3\u95ee\u9898\uff0c\u53ef\u80fd\u5bfc\u81f4\u6392\u653e\u589e\u52a0\u3002<\/p>\n<h3>DEF \u6db2\u4f53\u7684\u6b63\u5e38\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u662f\u591a\u5c11\uff1f<\/h3>\n<p>DEF \u7684\u6700\u4f73\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u901a\u5e38\u5728 10-50\u00b0C\uff0850-122\u00b0F\uff09\u4e4b\u95f4\u3002<\/p>\n<p>\u901a\u8fc7\u4e86\u89e3 P20BC 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