Differential gear, in automotive mechanics, gear arrangement that permits power from the engine to be transmitted to a pair of driving wheels, dividing the force equally between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven road. In the present work crown wheel gear of differential gear box are designed under. On rear wheel drive vehicles the differential may connect to halfshafts inside. Chapter 11 drive lines, differentials, drive axles, and power train. In vehicles without a differential, such as karts, both drivingwheels are forced to rotate at the same speed, usually on acommon axle driven by a simple chaindrive mechanism. Differential gearbox seminar reportpdf ppt download abstract.
Identify the components and explain the functions and the maintenance. Introduction gears are the most common means used for power transmission they can be applied between two shafts which are parallel collinear perpendicular and intersecting perpendicular and nonintersecting inclined at any arbitrary angle august 15, 2007 4. Differential gearbox is an important part of the automobile i. The main functions performed by the differential system are. In this article, youll learn why your car needs a differential, how it works and what its shortcomings are. Thus, a locking mechanism, or limited slip differential allows one wheel to slip or spin freely while some torque is. Sekhar, design and analysis of differential gear box used in heavy vehicles, ishitv, 2021 nov, 2015. In an gear box, the gear teeth and other moving metal must not touch. Whereas intel has a cultural propensity for change, american express financial advisors aefa is in the final stages of a project so sweeping that its goal has been to create a new company that could put the old one out of businessbefore a competitor tries to do just that. Chapter 11 drive lines, differentials, drive axles, and. It consists of two bevel gears sun gear and two bevel gears planet gear. Further reduces the rotations coming from the gear box before the same are passed on to the rear axles. Buy products related to differential gearbox products and see what customers say about differential gearbox products on free delivery possible on eligible purchases. The type of transmission manual or automatic determines how the slip joint is.
Working of clutch pack based lsd is elaborated here. Stresses are determined with the bs iso 6336 method and compared with kisssoft calculation programs for machine design. Send turning power from the transmission to the rear axle assembly. The solution is obtained by using ansys work bench modeler. Thats because although wheels on the left and right of a car rotate at the same speed on a straight road, they do not in a corner.
While taking a turn, the basic requirement of the vehicle is to control the speed of rear. What plays the role of differential gear box in front wheel. Without it, vehicles would be fine on straight roads, but theyd struggle as soon as they came to a corner. Sep 28, 20 how differential gearbox works prithviraj p shetty. Design and analysis of differential gearbox engineers gallery. A straight bevel pinion gear takes its drive from the end of the shaft, this meshes with the large bevel ring gear, known as the crown wheel. To help you understand a bit more about what we do, weve put together this quick and simple guide informing you of what exactly it is that manual transmissions do and the components involved. In the present work all the parts of differential are designed under static condition and modelled. Pdf the differential can be stated as a gear train used to control the. In this work detailed manual and computer aided designing of crown gear and. An epicyclic differential is at the heart of the toyota prius automotive drive train, where it interconnects the engine, motorgenerators, and the drive wheels which have a second differential for splitting torque as usual. Chapter 11 drive lines, differentials, drive axles, and power train accessories topics 1.
Functional differential gear system by thingofun thingiverse. As of today we have 77,165,269 ebooks for you to download for free. They must be continuously separated by a thin film of lubricant. I had developed this work as my semester project with a view to get familiar with the technologies as well as application of theories into practical work done by industries. No annoying ads, no download limits, enjoy it and dont forget to bookmark and share the love. According to the application, shimanos gearbox pairs opposing sevencog cassettes. Pdf structural analysis of differential gearbox researchgate.
The model is then transferred in iges format and exported into the analysis software ansys. This project was originally published on the parts of this project are cut out from three millimetre plywood using a laser cutter. Design a crown wheel gear of differential gear box used in heavy. Gearbox work in the following i describe my experience in adjusting the gearbox on my 1942 wdm20. The driving axle consists of a housing, a differential, two axle shafts half axles, and final drives if required. Inspired by thingofuns functional differential gear system i decided i should make one for my rc car.
Shimano gearbox in the works patents filed on hybrid chain. Rear universal jointa flex joint that connects the drive shaft to the differential. Mar 31, 2014 in an gear box, the gear teeth and other moving metal must not touch. Therefor a gearbox runs partially filled with lubricant oil. Differential is an arrangement of gears which work together and allow the vehicle to take a turn smoothly. And it works surprisingly well, my car is 4wd so i have two of these in the car right now. When working with fipg material, you must observe the following. Thus, a locking mechanism, or limited slip differential allows one wheel to slip or spin freely while some torque is delivered to the other wheel hopefully on dry land. This project work is the bonafide work done by pratik patel, roll no. The differential is an important component of the driving axle. It focuses on stresses and tries to have a gearbox as compact as possible. Gearboxes are used in almost every industry right from power to marine, and also include agriculture, textile, automobiles, aerospace, shipping etc.
Design and analysis of differential gearbox engineers. An epicyclic differential can use epicyclic gearing to split and apportion torque asymmetrically between the front and rear axles. This article will explain differentials where the power, in most cars, makes its last stop before spinning the wheels the differential has three jobs. The differential can be stated as a gear train used to control the speed and torque to the rear wheels. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Describe the principles of the limited slip differential. Design and analysis of differential gear box in automobiles. This video is aimed at giving a clear explanation on working of lsd with help of animation. A small derailleur slides on an angular shaft between them to.
The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Differential gear system mini project report free download as word doc. A front wheel differential is mounted with the transmission shaft to the wheels. Working of differential while taking turn, the inner and outer.
The working principle is same as that of a rear differential with addition to the steering system and it has similar type of gears as that of rear differential. The crown wheel has another unit called the differential unit. Apr 30, 2014 this video is aimed at giving a clear explanation on working of lsd with help of animation. In the differential, bevel pinion gear is fixed to the propeller shaft which rotates the crown wheel. How differential gearbox works prithviraj p shetty. Chapter 11 drive lines, differentials, drive axles, and power. However, parallel axes spur and helical gears are the main gears in automotive transmission. Pdf analysis of differential crown gear and pinion for axle with. Nissan d21 platform nissan datsun japan nissan navara many markets nissan hustler nissan camiones mexico 19932008 nissan d21 china, chile. I scaled down the gears from the above mentioned thing, and designed the rest of the parts in my favourite cad software.
Differential system 5 p a g e concept geometrical description torque is supplied from the engine, via the transmission, to a drive shaft which runs to the final drive unit that contains the differential. In the case of total replacement, the gearbox is shipped to one of brad. As the spider gear is connected with the ring gear, power flows to it. From the drive shaft power is transferred to pinion gear first, since pinion and ring gear are meshed, power flow to the ring gear. The differential was a milestone development in the motor car. In this paper the differential gears assembly and its housing are analyzed for the. Working of differential while taking turn, the inner and outer wheels have different turning radius. The analysis results shows that the composite gears offer improved properties over the conventional metallic gear and these can be used as better alternative for replacing metallic gears for the differential gearbox apllication. Based on their construction, rear axle housings can be divided into two groups, integral carrier or removable carrier. Design and analysis of differential gearbox automatic. Gearbox design this presentation aims at designing an aero engine gearbox.
This is all about what is gearbox and types of gearbox. Working and driving gears first, second and reverse gears useable with both working and driving ratios front wheel drive fwd useable with any gear selection power take off pto useable with both working and driving ratios. Well also look at several types of positraction, also known as limited slip differentials. Design and analysis of differential gearbox free download as pdf file. If one of the wheels attached to a differential decides to hit some ice, for example, it slips and spins with all of the speed the differential has to distribute. Gearbox maintenance tips rapid repair solutions once the problem is identified, the cost of repair and downtime must be weighed when deciding whether to fix the problem onsite or have the gearbox completely replaced. A differential is a gear train with three shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others, or a fixed multiple of that average. But, when it comes to weight for light utility vehicles aluminium alloy is preferred. The differential is designed to drive a pair of wheels with equalforce, whilst allowing them to rotate at different speeds. Introduction gears are the most common means used for power transmission they can be applied between two shafts which are parallel collinear perpendicular and intersecting perpendicular and nonintersecting inclined at any arbitrary angle august 15, 2007 4 introduction gears are made to high precision.
The two main parts of differential transmission system, one is crown gear. If youve read how car engines work, you understand how a cars power is generated. Objectives when you have completed this chapter, you will be able to do the following. The purpose is to provide variable angular velocity at the wheels by extracting torque form the power shaft and delivering it at variable ratios to axles without which there is chance of tipping over. Iges format continuing the further work in ansys mechanical. The analysis results shows that the composite gears offer improved properties over the conventional metallic gear and these can be used as better alternative for replacing. Apr, 2014 differential is an arrangement of gears which work together and allow the vehicle to take a turn smoothly. Abstract my project design and analysis of differential gearbox mainly focuses on the mechanical design and analysis of gearbox as transmit the power. Smooth shift manual gearbox and diff treatment nulon smooth shift manual gearbox and diff treatment g70 with ptfe offers maximum lubrication and antiwear protection to the gear and bearing surfaces of all types of gears helical, spur and worm drive. Differential system 4 p a g e differential system introduction differential systems are the key components in every automobile. In this presentation we tried to explain about differential gearbox. Differential gear system mini project report transmission.
If you want your car to be more suited to highways than the track, the 3. When the vehicle is traveling in a straight line, there will be no differential movement of the planetary system of. Manufacturing of gears presents a demanding challenge for metallurgists in heat treatment, for supervisors in machining and gear cutting, and for quality engineers in keeping the quality to the required standards. Car wheels spin at different speeds, especially when turning. Convert the 3d model into parasolid format and import into ansys to do.