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whm0827

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The HC and methanol measurement and retention checks shall evaluate the accuracy of enclosure HC and methanol mass measurements and the ability of the enclosure to retain trapped HC and methanol. The check shall be conducted over a 24-hour period with all of the normally functioning subsystems of the enclosure active. A known mass of propane and/or methanol shall be injected into the enclosure and an initial enclosure mass measurement(s) shall be made. The enclosure shall be subjected to the temperature cycling specified in paragraph III.D.10.1.7 of the “California Evaporative Emission Standards and Test Procedures for 2001 and Subsequent Model Motor Vehicles” (revising 40 CFR §86.133-90(l)) for a 24-hour period.
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reko34

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RXMCDM: 金币+1, 多谢应助! 2014-06-18 17:33:30
whm0827: 金币+20, 翻译EPI+1, ★★★★★最佳答案 2014-06-19 08:34:01
检查HC和甲醇的测量和阻拦状况评价箱体的HC和甲醇质量测量和箱体限制HC和甲醇外泄的能力。在保持所有子系统正常工作的条件下持续检查24小时。向箱体注入已知量的丙烷和/或甲烷并进行初始的质量测量。箱体应能执行“加利福尼亚蒸发排放标准和测试流程2001及后续的机动车模型”(修订40 CFR §86.133-90(l))章节III.D.10.1.7规定的温度循环24小时。
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