汽车主减速器
汽车主减速器是指连接传动轴和差速器的动力传输系统的一部分。它的功能是将传动轴传输的动力方向转换90度，传递到驱动轮轴。同时，它提供了传动轴和驱动车轮之间的固定速比。
GEAR RATIO
The gear。of a final drive is the。of the number of teeth on the ring gear to the number of teeth on the XXX at the wheels。but will also result in lower top speed。A lower gear。will provide less torque at the wheels。but will result in higher top speed.
齿轮比
汽车主减速器的齿轮比是环齿上齿数和小齿轮上齿数的比率。这个比率决定了传递到驱动车轮的扭矩大小。更高的齿轮比将提供更多的扭矩，但也会导致较低的最高速度。更低的齿轮比将提供更少的扭矩，但将导致更高的最高速度。
TYPES OF FINAL DRIVES
汽车差速器There are several types of final drives。including the hypoid。spiral bevel。and worm gear final drives。The hypoid final drive is the most commonly used in modern vehicles。as it provides a high gear。and is XXX final drive is commonly used in high-performance vehicles。as it provides a XXX。The worm gear final drive is rarely used。as it is less efficient and provides a lower gear。
汽车主减速器的类型
汽车主减速器有几种类型，包括斜齿轮、螺旋锥齿轮和蜗轮蜗杆主减速器。斜齿轮主减速器是现代车辆中最常用的类型，因为它提供了较高的齿轮比，并且比其他类型更高效。螺旋锥齿轮主减速器通常用于高性能车辆，因为它提供了更平稳、更安静的行驶体验。蜗轮蜗杆主减速器很少使用，因为它效率较低，并且提供较低的齿轮比。
MAINTENANCE
Proper maintenance of the final drive is XXX to the gears。It is also important to check fo
r any leaks or damage to the final drive。and to have any XXX.
保养
正确的汽车主减速器保养对车辆的寿命和性能至关重要。定期检查齿轮油液位并按建议的间隔更换齿轮油是很重要的，以确保适当的润滑并防止齿轮损坏。还要检查汽车主减速器是否有泄漏或损坏，并及时解决任何问题。
The gear。of the final drive is XXX the number of teeth on the ring gear by the number of XXX。this XXX from about 3:1 to 5:1.while in trucks it varies from about 5:1 to 11:1.To calculate the rear axle。simply count the number of teeth on each gear and divide the number of XXX by the number of ring gear teeth。For example。if the n gear has 10 teeth and the ring gear has 30.the rear axle。would be 3:1.
Manufacturers XXX car。is 3.50:1.A higher axle。such as 4.11:1.would increase n and pulling power but decrease XXX。This means that the engine would have to run XXX cruising speed。On the other hand。a lower axle。of 3:1 would ce n and pulling power b
ut increase XXX。This would cause the engine to run at a lower RPM while maintaining the same speed.
Hypoidgears。on the other hand。have n and ring gear axes that are offset from each other。This design XXX。XXX。they require special XXX。it is XXX.
The hypoid gear final drive is a common design found in light and medium trucks。as well as all domestic rear-XXX。which it has largely XXX design helps to lower the hump in the XXX-meshing n。In this design。the n meshes with the ring gear below the XXX of less than 90 degrees。This can be seen in Figure 5-13.which shows different types of final drives.
The double-XXX a constant size of the ring gear and housing。This is achieved through the use of heavier。larger teeth and a ced drive angle。which is similar to the spiral bevel but includes some characteristics of the worm gear。The XXX。XXX in contact at the same time。This design increases gear life and ces gear noise due to the wiping n of the teeth。but requires heavy-grade lubricants to handle the heavy tooth pressure.
The final drives shown in Figure 5-13 typically only have a single fixed gear n。which is the only XXX and light- to medium-duty trucks een XXX.
Heavy-duty trucks utilize double-XXX and ring gear。which act as a single fixed gear n final drive。In that the secondary n is mounted on the primary ring gear shaft。The second gear n is a result of the secondary n。which is firmly attached to the primary ring gear。It drives a XXX vehicles。such as the 5-XXX size incorporate a single- or n final drive with ns for two speeds.
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