滑铁卢华人, 水城百事论坛 http://www.kwcg.ca/forum/ 水城社区-Kitchener, Waterloo, Cambridge & Guelph华人的网上家园 en 学过又怎么样？别这样相信过去 Reply by 匿名, Thursday, August 06, 2026, 16:27:

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]]> http://www.kwcg.ca/forum/index.php?id=1542259 http://www.kwcg.ca/forum/index.php?id=1542259 Thu, 06 Aug 2026 16:27:59 GMT 匿名 你说的是等压状态，现在内燃机是工作在等温状态。你到底有没有学过热力学？ Reply by 匿名, Thursday, August 06, 2026, 16:22:

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]]> http://www.kwcg.ca/forum/index.php?id=1542258 http://www.kwcg.ca/forum/index.php?id=1542258 Thu, 06 Aug 2026 16:22:36 GMT 匿名 内燃机达到1900度，用啥材料？铁的熔点才多少。再说空气里就21%的氧气，要达到这么高的温度可没那么容易 Reply by 匿名, Thursday, August 06, 2026, 14:47:

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]]> http://www.kwcg.ca/forum/index.php?id=1542245 http://www.kwcg.ca/forum/index.php?id=1542245 Thu, 06 Aug 2026 14:47:58 GMT 匿名 这个是高中的知识，是个人应该都知道吧。卡诺效率并没有固定常数上限，它由高温热源温度、低温热源温度共同决定，如果你把室温定在27度，内燃机内部温度定在1926度，那么内燃机的理论热效率可以达到86%呢。 Reply by :-D :-D :-D, Thursday, August 06, 2026, 14:10:

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]]> http://www.kwcg.ca/forum/index.php?id=1542239 http://www.kwcg.ca/forum/index.php?id=1542239 Thu, 06 Aug 2026 14:10:39 GMT :-D :-D :-D 智驾也可以用在油车上，只不过用在电车上可以更容易而已。 Reply by 匿名, Thursday, August 06, 2026, 14:04:

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]]> http://www.kwcg.ca/forum/index.php?id=1542237 http://www.kwcg.ca/forum/index.php?id=1542237 Thu, 06 Aug 2026 14:04:04 GMT 匿名 95？没学过热力学吧 Reply by 匿名, Thursday, August 06, 2026, 13:49:

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]]> http://www.kwcg.ca/forum/index.php?id=1542234 http://www.kwcg.ca/forum/index.php?id=1542234 Thu, 06 Aug 2026 13:49:41 GMT 匿名 电车不仅仅是为了省钱吧，还有智驾 Reply by 匿名, Thursday, August 06, 2026, 13:33:

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]]> http://www.kwcg.ca/forum/index.php?id=1542222 http://www.kwcg.ca/forum/index.php?id=1542222 Thu, 06 Aug 2026 13:33:28 GMT 匿名 油车的能源利用率短板不仅仅是内燃机效率，更多的是在变速箱和其他一整套机械传动机构，目前最好的内燃机差不多平均下来效率也有45%，但是整车的能源利用率差不多在10%左右，这些能源损耗在加速和减速上，只要不在经济时速不间断行驶上，油车的效率就很低。如果把热效率95%的汽油机安装在增程车上，那就简直是电车的福音 Reply by :-D :-D :-D, Thursday, August 06, 2026, 12:47:

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]]> http://www.kwcg.ca/forum/index.php?id=1542221 http://www.kwcg.ca/forum/index.php?id=1542221 Thu, 06 Aug 2026 12:47:40 GMT :-D :-D :-D 现在是相反。增程比直接内燃对燃油利用效率高。 Reply by 匿名, Thursday, August 06, 2026, 12:20:

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]]> http://www.kwcg.ca/forum/index.php?id=1542214 http://www.kwcg.ca/forum/index.php?id=1542214 Thu, 06 Aug 2026 12:20:15 GMT 匿名 如果内燃机的热效率达到了95%，是不是电车就变得毫无意义了？ Posting by 匿名, Thursday, August 06, 2026, 12:08:

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]]> http://www.kwcg.ca/forum/index.php?id=1542212 http://www.kwcg.ca/forum/index.php?id=1542212 Thu, 06 Aug 2026 12:08:05 GMT 匿名