July 31, 2019

Automobile Basics- Part 1


Worlds first three-wheeler automobile with Otto cycle petrol engine was built by Karl Benz somewhere around 1886 in Germany. It was granted a patent in 1887. During the same time another team from Germany Gattlieb Daimler and Wilhelm Maybach built and patented the first motorcycle.

The accelerator was invented by the Benz for the speed regulation along with the battery ignition system, spark plug, clutch, gear shift and the radiator for the engine cooling. With the improvements, he started with the production of the automobile somewhere around 1888. During 1894-95 first four-wheeled automobile was introduced by him of his own design.

After that Daimler and the Maybach also produced around thirty vehicles during 1890-1895 at the Daimler works and the Hotel Hermann. During the year 1927, the companies of Benz and Daimler united under the name of Daimler-Benz.

Production of the automobiles in France was started by the Emile Levassor and Armond Peugeot using the same Daimler engines in 1890. The first American Car was launched during 1877 by the George Baldwin. Large scale production of the automobiles begin in 1902 and it was expanded by the Henry Ford.

Components of the automobile:-
1.     Basic Structure
2.     Power Plant
3.     Transmission System
4.     The auxiliaries
5.     The controls
6.     Superstructure


Basic Structure
It consists of the following things
o   Frame
o   Suspension system
o   Axles
o   Wheels
o   Tyres


Frame
There are two forms of the frame.
1.Conventional pressed steel frame.
2.Integral or frameless construction.

Frameless construction is only possible only in the case of the closed cars since the roof, screen, pillars, door pillars are essential load-taking parts.
It too has some advantages.
1.     It reduces the weight and fuel consumption.
2.     It lowers manufacturing costs.
3.  During the collision of the vehicles, it absorbs the shock due to the impact and it provides safety to the passengers.

Disadvantages
1.     Reduction of strength
2.     Reduces durability
3.     It is affordable only if the frameless construction is used in the mass production
4.      It increases the maintenance and repair costs


Suspension System:-
1.     It prevents from the road shocks
2.     It increases the stability of the vehicle
3.     There are 2 types of the suspension system
4.     First one is the conventional system in which the road springs are attached to the rigid beam axle
5.     The second one is an independent system in which there is no rigid axle beam and each wheel is free to move vertically without any reaction


Axles
There are three types of liver axles
1.     Fully floating type
2.     Three quarter floating type
3.     Semi-floating type

Wheels
 Wire-spoked wheels have been used mainly on the sports car, primarily on account of their lightweight and quickness in changing the wheel.
Engine
The engine provides the motive power for all the various functions which the vehicle or any part may be called to perform

Transmission system
It consists of the following
1.     Clutch
2.     Gear Box
3.     Propeller shaft


Propeller shaft transmits the torque output from the gearbox to the rear axle

The function of the transmission system
1.     It disconnects the engine from the road wheels when desired.
2.      It connects the engine to the driving wheels without shock.
3.      It reduces the engine speed in the fixed ratio
4.      It helps the drive to turn in the right angle
( to be continued….)
©
Kaushik















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