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高温天怠速开空调,到底有多烧油

2017-08-04 07:08:02   中国青年网

饱哥把车子移到加油站,将油加满。

加满油后,将车子挪到加油站边上停车的地方开始试验。

清零之后,油表在怠速了一小会儿直接显示无穷大。

一个小时的最终结果。

本报记者 徐艺杭 文/摄

短暂的降温结束之后,近日下沙又开启高温模式。在长时间暴晒的环境下,坐在车里等人就免不了要打开空调,边吹边怠速了。

这个时候,老司机们往往会给大家普及:“不要怠速开空调,很费油!”网上许多说法甚至得出了一般家用车怠速开空调一小时会耗费3-4升汽油的说法,这些理论可吓坏了不少新手司机。于是有些人宁愿将车子停在路边熄火,等几分钟后再次发动车子,觉得这样做就省了不少钱。

那么怠速的时候,我们的家用车到底有多费油?为此,饱哥特地拿自己的爱车为大家做一个小实验,来解开这个谜题。

实验地点选择在德胜路上的中国石化杭州学源街加油站,饱哥将车子开进加油站,加油的同时,摇晃车身把油箱里的油摇实,加油加到两次跳枪,确保油箱里的油已经加到最满。然后将车子缓缓移动到加油站旁边可以停车的地方,挪车距离只有十几米,对于本次实验影响较小。

第二步将车子的空调打开,调到3档,这是行车时经常用到的风量(饱哥车子一共有7档风量),然后关上车门,清零车子的行车电脑显示器,开始计时。接下来就是漫长的等待时间了,期间饱哥观察行车电脑显示器上的油耗指示,没一会儿就直接跳到99.9升/公里的极限位置,这意味着停车时的百公里油耗为无限大,并一直维持在这个数值,看上去还是挺吓人的。车里虽然开着空调,但车外的炙烤还是把车里的饱哥晒得黑了一圈。

在车里经过两把游戏和十几分钟的刷微博时间之后,终于度过了难熬的一个小时。饱哥将车子挪回加油枪的位置,用同样的方法两次跳枪把车子加满油,此时加油量定格在1.53升,而当日加的中石化92号无铅汽油油价为5.98元/升,所以得出的最终花费为9.15元。

实验结果出来了!饱哥的2.0升自然吸气汽车在家用车的排量中算比较有代表性,最终一小时的开空调怠速耗费1.53升油量和9.15元的成本,这个耗费对比我们家里平时开空调一个小时的成本高了不少。不过换算到每一分钟的损耗,是1毛5左右,这个价格还会加上在实验过程中一些无法避免的额外损耗,所以如果只是怠速几分钟等待朋友,比起热到中暑,还是花这1块钱好了。

不过如果是很长时间怠速开空调等待,那饱哥还是建议大家关掉发动机,找个商场逛一逛坐一坐,或者干脆公共交通出行,节能减排不说,还能避免长时间怠速让发动机节气门产生积碳,到时候如果再做个发动机清洗,那成本就更划不来了。

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