Automobile Motor Vehicle Construction
Chapter One
THE OBJECTIVE OF MOTOR VEHICLE CONSTRUCTION
They are general objectives of motor vehicle construction.
First, understand the historical and technical development of motor vehicle
The second objective is to understand the fundamental cycles of operation of the period and internal combustion engines.
The third objective is to know the constructional processes of motor vehicles.
The fourth objective is to understand the general principles of the transmission system of vehicle bodies. To achieve this we have to know the braking system and its operation principle and understand the principles of steering mechanisms.
CHAPTER TWO
LITERATURE REVIEW
HISTORICAL DEVELOPMENT OF MOTOR VEHICLE
At a very stage, man realised that the means of transport with which nature had provided him left much to be desired. He was severely limited in the load he could carry, the distance he could carry them and the speed at which he could travel, even without a load. Infact one would be right to guess that the physical exertion involved was no more his liking their it is today. Man started by training suitable animals to enable heavier loads to be carried greater distance, often at greater speeds then man was capable of attaining and there was added advantage that most of the effort was provided by the animal, which the man could travel at his ease.
Heavy loads were dragged upon sledges until an early and unknown engineering invented the wheel. This made it possible to construct crude cart upon which even heavier loads be carried pore easily. The one draw-back to the use of wheeled vehicle was, And still is the necessity of providing a reasonably smooth and hard surface upon which the wheel could run. The development of wheel vehicle is closely reacted to the development of roads. As new material and manufacturing methods were developed, it becomes possible to make improvement i vehicles construction, but so long as animals were the only form of motive power it was not possible to increase loads on speed very much.
THE CHASSIS
The chassis or carriage unit comprises
- Front suspension.
- Steering mechanism.
- Engine, clutch, and gear box.
- Propeller shaft.
- Rear spring to which is attached the rear axle.
- Road wheels
- Shock absorbers, fuel tank, hydraulic pipes brake shaft and cables.
CHAPTER THREE
ENGINE DETAILS
THE PETROL ENGINE
The function of the internal combustion engine is to convert the energy in the fuel into heat and the heat into mechanical energy. The heat is produced by a chemical reaction between the different elements of the fuel and air, in other words burning. This takes place in a scaled cylinder and chamber and causes the gases formed to expand and exert a pressure in all direction. The only movable object in the scaled chamber is the piston, which is driven down by the expanding gases, hence transferring the power produced in the cylinder to the crankshaft of the engine and creating mechanical energy.
CHAPTER FOUR
MEASUREMENT
In the majority of motor vehicle workshops components are checked using measuring instruments.
In practice it is more important to obtain the correct type of fit rather than know the actual size of the compone4nts, unless the dimensions ascertained are used to obtain the necessary fit.
The instrument used to check a dimension should be chosen according to the degree of accuracy required.
CHAPTER FIVE
CONCLUSION
This very project, we believe that the write up has all, the basic information on material and process of constructing motor vehicle.
It also serves as a guide to student and any individual who is technologically inclined when embarking on this type of project.
Appropriate materials were subsequently selected and fabricated to required sizes, the motor vehicle was then assembled and tested, it was found to perform efficiently thus satisfying the objective for which it was designed.
Finally, it was also designed and build to have a high portability, durability, flexibility with minum maintenance cost.
RECOMMENDATION
The opportunities of an automotive technologist are almost unlimited. this can be modified, if government could help and build up a standard institute with standard machines for students who have the knowledge of Automotive Motor Vehicle Construction, to develop the skills and also help then financially to enable them achieve their aims and objectives with this the job of automotive technologist can be a stepping stone to greater things.
Finally, cost of production of this work can be reduced if the factory for the production of materials and machines for producing motor engine, exle, and gearbox etc. are being located in our country.
REFERENCES
- AYOGU V.C. Automotive Technology and Practice, First Edition, Optimal Publisher Enugu Nigeria 2005.
- DOLAN J.A. Motor Vehicle Technology and Practical Work, First Edition, Halley Court, Jordan Hill, Oxford. Halley Educational Books Ltd. 1966.
- CHISHOLM, LAN I.M. Automobile Engine and Vehicle Technology. McGraw – Hill Book Company UK 1984.
