Basics of autosss

09
MY main hobby is to know more and more about the automobile, and represent my knowledge to

learners according to my way. This is a technical page in which we try to convert our thought in a

easiest way so that all of them can easily understand the cars concepts………. Our main aim is to spread

our knowledge in every country and every student who thinks that automobile is a tough topic……

Lets start from the beginning of engines in vision of Sanchit Saxena........

What is meant by automobile?

Well according to me an automobile is a self-propelled passenger vehicle that usually has four wheels and an internal-combustion engine, used for land transport, we also called   that it is a kind of robot that is operated by driver itself……but now a days research is being done in the field of artificial intelligence which will later on lead to driver less automobiles

Internal combustion engine

In our previous definition we read internal combustion engine. What is that? Well The internal combustion engine is an engine in which the combustion of fuel occurs, it mean the mixture of fuel and air is enter in the cylinder and it get compressed by the piston then we ignite the mixture with the help of spark plug, then our mixture get expansion and it cause the increase in temperature, due to this crank is move. The force moves the component over a distance, transforming chemical energy into mechanical energy. Generally we classified the internal combustion engine in 4 strokes, 2 strokes, rotary engine, diesel engine (4 stroke) . The working principle of internal combustion engine based on 2^nd law of thermodynamics( it tells about the direction of heat flow) IC engine is a device which converts some part of heat into work and reject remaining to the surrounding.

Before proceeding ahead we will discuss the following terms that are necessary to know: Crank shaft, Piston, Camshaft etc.

                                                                    Basic components of engine

Crank shaft 

                                                       

Crank shaft is a part of an engine that translates reciprocating linear piston motion into rotation. It convert the reciprocating motion into rotational motion, its is connected to a flywheel to reduce the pulsation characteristic of four strokes and sometimes a torsional or vibrational damper at the opposite end, to reduce the torsional vibrations often caused along the length of crankshaft by the cylinders.

Piston

Piston A disk or cylindrical part tightly fitting and moving within a cylinder, either to compress or move a fluid collected in the cylinder, as air or water, or to transform energy imparted by a fluid entering or expanding inside the cylinder, as compressed air, explosive gases, or steam, into a rectilinear motion usually transformed into rotary motion by means of a connecting rod.

Camshaft

Camshaft is a part of engine which control the timing or movement of intake and exhaust. The key parts of any camshaft are the lobes. As the camshaft spins, the lobes open and close the intake and exhaust valves in time with the motion of the piston. It turns out that there is a direct relationship between the shape of the cam lobes and the way the engine performs in different speed ranges.

Now we discussed about the 2 strokes and 4 strokes

 engine (Gasoline and Diesel), rotary engine.

A two-stroke engine is a type of IC engine which complete the power cycle in only one crankshaft revolution. It have two strokes upward and downward strokes. This accomplished by the end of the combustion stroke and the beginning of the compression stroke happening simultaneously and performing the intake and exhaust functions at the same time.

A four-stroke engine is an internal combustion engine in which the piston completes four separate strokes—intake, compression, power, and exhaust.

There are two common types of four-stroke engines. They are closely related to each other, but have major differences in design and behavior. The earliest of these to be developed is the Otto cycle engine developed in 1876 by Nikolaus August Otto in Cologne, Germany, after the operation principle described by Alphonse Beau de Rochas in 1861. This engine is most often referred to as a gasoline engine, after the fuel that powers it. The second type of four-stroke engine is the Diesel engine developed in 1893 by Rudolph Diesel, also of Germany. Diesel created his engine to improve efficiency compared with the Otto engine. There are several major differences between the Otto cycle engine and the four-stroke diesel engine. The diesel engine is made in both a two-stroke and a four-stroke version. Otto's company, Deutz AG, now primarily produces diesel engines.

Rotary engine we also called piston less rotary engine is an I.C engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons.

ON our next Chapter I tell u about the working of 2 stroke and 4 stroke engine,