Wednesday, July 15, 2009

Automobile

Automobile

Automobile engine refers to a fuel-consuming machine or device that is used for propelling automobiles, airplanes, tractors, buses, two wheelers, cars etc. Engine forms an integral component of a vehicle that transforms chemical energy in fuel into mechanical energy for power. Usually, automobile engines make use of four strokes to turn chemical energy into mechanical energy with the help of combustion of gases or hydrocarbon fuel.


Components of Automobile engine

Camshaft
Crankshaft
Engine Oil System
Piston
Connecting Rod
Engine Belts and Pulleys
Cylinder Heads
Valve train
Engine Accessories


Camshaft:
Camshaft is a type of rotating device or apparatus used in piston engines for propelling or operating poppet valves. Camshaft comprises of series of cams that regulates the opening and closing of valves in the piston engines. The camshaft works with the help of a belt, chain and gears.



Crankshaft:
Crankshaft is a device, which converts the up and down movement of the piston into rotatory motion. This shaft is presented at the bottom of an engine and its main function is to rotate the pistons in a circular motion. Crankshaft is further connected to flywheel, clutch, and main shaft of the transmission, torque converter and belt pulley.



Engine Oil System:
Oil is one of the necessities of an automobile engine. Oil is distributed under strong pressure to all other moving parts of an engine with the help of an oil pump. This oil pump is placed at the bottom of an engine in the oil pan and is joined by a gear to either the crankshaft or the camshaft. Near the oil pump, there is an oil pressure sensor, which sends information about the status of oil to a warning light or meter gauge.


Piston:
Piston is a cylindrical plug which is used for moving up and down the cylinder according to the position of the crankshaft in its rotation. Piston has multiple uses and functions. In the case of four-stroke engine the piston is pulled or pushed with the help of crankshaft while in the case of compression stroke, piston is pushed with the powerful explosion of mixture of air and fuel.


Connecting Rod:
Connecting rods are made of metals, which are used, for joining a rotating wheel to a reciprocating shaft. More precisely, connecting rods also referred to as con rod are used for conjoining the piston to the crankshaft.


Engine Belts and Pulleys:
Engine belts are the bands made of flexible material used for connecting or joining two rotating shafts or pulleys together. These belts work in coordination with wheels and axles for transferring energy. When the wheels or shafts are positioned at extremely different angles, then the engine belts have the ability to change the direction of a force. Engine pulley is a type of machine or a wheel having either a broad rim or groomed rim attached to a rope or chain for lifting heavy objects.


Cylinder Heads:
Cylinder heads refers to a detachable plate, which is used for covering the closed end of a cylinder assembled in an automotive engine. It comprises of combustion chamber valve train and spark plugs. Different types of automobiles have different engine configurations such as Straight engine has only one cylinder head while a engine has two cylinder heads.


Valve train:
Valve train consists of various components and parts, which enables valves to operate and function smoothly. Valve train comprises of three main components: camshafts, several components which are used for turning the camshaft’s rotating movement into reciprocating movement, and lastly valves and its various parts.


Engine Accessories:
These include other additional or supporting components used along with main components for building an automobile engine.
The various types of automobile engine accessories include:
Crankcase
Engine Brackets Engine Block
Engine Mounting Bolts