据说,当代车主都有一种通病那就是“油耗强迫症”
同样的距离,同样的路况
如果今天的油耗比昨天高出一丢丢
就会在内心给自己发出“破产警告”
(文末有福利,不要错过哦~)
然而有不少心细的老司机都发现
为什么一到冬天汽车的油耗就偏高呢?
其实,冬季油耗增加是一个正常现象
但如果百公里油耗一下子多出了4-5升
那就要好好的从驾驶行为上找找问题了
说不定你就是中了以下的招
热效率下降导致喷油量增加
在冬季行车,由于气温较低,发动机为了保持正常的水温,会把一部分动力“分配”去加热。就好比,以前消耗的1L汽油里可能有0.3L转化成了动力,而在冬季,发动机就会从燃烧的0.3L汽油里拿出一部分给自己“取暖”,以保证正常运转。为了保证动力不减,便会增加喷油量,这就在无形中降低了热效率,从而增加了油耗。
此外,冬季机油黏稠度高,同时发动机机体温度低,导致燃油雾化差,相当一部分燃油未经充分燃烧就排出去了,没有转化为有效功,发动机为保证原有的输出功率,必须增加燃油喷射量。
车内热风导致发动机额外做功
冬天吹热风的要比夏天吹冷风时更耗油,许多车主对此有误解。
其实,发动机水箱的热气确实可以使驾驶室变暖,但如果热气不足的话不能达到设定温度时,发动机就要额外做功来产生更多热能,好供给驾驶室温度要求,这时就要额外耗油。
冷车启动时燃油消耗大
冷车启动时由于冷却水温度低,达不到正常工作时的温度值,发动机便启动加浓系统,增加辅助喷射量,直至温度上升到正常行车温度,这段时间通常会比较费油。
有数据显示,冷车行车的油耗通常是正常油耗的3—4倍,即使冷车行使一公里后,车辆油耗仍为平时油耗的2倍左右。
节温器工作不良
节温器主阀门故障,导致开启过早,则使发动机预热时间延长或发动机温度过低,此时电脑就会根据水温传感器信号增加喷油量,油耗肯定就会增加了。
水温传感器失灵
水温传感器信号失准,传感器提供给ECU的信息总是水温过低,是ECU就会增加怠速阀门的开度、增加喷油量,油耗肯定就增加了。
如何让车内又暖和又省油?
汽车启动后不要马上开暖风
应该在汽车启动后,等3-5分钟,待水温升高后,再开启暖风。
不要开A/C按钮
因为压缩机主要作用是用来制冷,吹冷风。汽车中冷风与暖风是两个系统的,暖风是利用汽车自身的热循环产生的,不需用压缩机工作。
循环方式设置为内循环
将空调的循环方式设置为内循环模式,车内气温会快速升高。感觉车里暖和了之后再切换成外循环,这样有助于车内空气流通。
调节暖风模式
暖风温度调节为23摄氏度最合适。另外调整出风口风向,不要对着面部,容易导致疲劳,影响驾驶安全。把风向调为吹腿和脚部,腿脚暖和了全身也就暖和了。
其实,油耗问题,与平时的驾驶习惯息息相关,在油耗突然升高的情况下,先检查排查自己的问题,再对车辆进行检测。其次,车辆平时的保养也很重要哦~
原创文章,作者:cesifu,如若转载,请注明出处:http://www.cesifu.com/article/70433.html
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