V8 W12哪个好

V8好,还是W12发动机好啊,为什么啊
2025-03-25 12:34:59
推荐回答(3个)
回答1:

如果光说性能的话,肯定W12 好啊!但如果考虑上油耗的话,我感觉V8 都够用了。
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在汽车则历史上曾经已有过采用W型设计发动机的例子。早在20年代,就有人曾设计出了传奇性的“泪滴”形汽车。该车的设计者采用了3×2排列6缸发动机。几年之后又出现了以飞机用W12发动机为动力、排量达24L、功率为370kW的汽车。三人曾驾驶这辆车创造了世界记录。
在70年前,即1931年秋季,霍希公司率先设计出了供成批生产的12缸发动机,成为德国汽车发展史上的里程碑。霍希公司后来成为奥迪品牌的渊源之一,它曾将一台V12发动机安装在敞篷车里,该发动机与新型W12一样,都是6L发动机。
奥迪是当前采用双V型或W型串联配置12汽缸制造发动机的厂商之一。W型发动机的设计原理具有非常显著的特点:尽管汽缸数量多、排量大,但是W12新型发动机的体积却与V8型一样大,而比传统的V12型要小得多。
W12新型发动机的特点
与以往技术相比,新型奥迪12缸发动机具有无法比拟的优点。它结构紧凑,动力强劲,而且重量很轻。由于这款发动机的长度仅为513mm,而宽度为690mm,因此安装在汽车前面,可与四轮驱动系统组合在一起。然而,其他类型的12缸发动机因体积较大,只能与后轮驱动系统相匹配。因为在汽车前面的发动机下部没有足够的空间容纳前轮驱动部件。
新型W12发动机设计紧凑,再加上采用铝和镜等轻金属材料,使这款12缸发动机具有另一个优点,这就是重量很轻。奥迪A8 L6.0 quattro轿车上因采用W12发动机,整车重量随之被空前地降低到1980kg,低于所有其他车型。该车单位马力需加速的重量仅为4.7kg,这一数字堪与高性能跑车相竞争。
与以往设计相比,这款发动机已算不上是经典意义的W12型发动机,因为它没有采用三排式分离配置,而是将三根连杆安置在同一曲轴销上。这种由奥迪与大众公司联合开发的新型12缸发动机确实与众不同。
关注一下发动机的汽缸排列就会发现:该机器是由两组超小型V6总成制成。每组都有六个汽缸、呈15°角排列。这种偏置式排列兼备了经典的V6 4缸发动机的优点,而其宽度和长度都缩减到最小程度。
将这两排汽缸连接成72°的另一个优点是发动机的高度显著降低,这意味着汽车的前端轮廓可以设计得很扁平,而更富于流线感。还有一个优点就是它为高级轿车带来了独特的动感,这或许正是人们最盼望的。
W12发动机的核心部件是重量仅为20.5kg的带七个轴承的曲轴传动装置。曲轴销呈偏置式配置,可像V6发动机一样保持恒定的点火次序。这款发动机的整体刚性也非同寻常。其优秀的抗振性所带来的舒适感甚至超过对12缸发动机的预期水平。

回答2:

回答3:

我就不长篇大论了,无论从性能、油耗都是W12的要出色!
别以为12个缸就要比8个缸费油!W12是根据车速决定汽缸运动数量的!比如60-80迈车速,W12的发动机只用6个汽缸工作,根据速度的提升再增加汽缸运动数量!而一般的V8发动机很少有这种功能,只是依靠气门开合度调整油耗!
V8发动机在维护保养中又要比W12的便宜!
我是开汽修厂的,二类资质,以上建议希望能帮到你

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