Download - Know About Your Car Engine
What You Should Know About Your Car Engine
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Car Engine
Engine
Car engine is not a single unit but built up from different size components with specific function each.
Parts can be categorized into Mechanical & Electrical parts.
Engine Spares
Mechanical Component
1- Tappet Cover2- Engine Head3- Engine Block4- Engine Oil Sump5- Cam Shaft6- Crank Shaft7- Piston
8- Fuel Pump9- Valves10- Rocker arm11- Crank case12- Connecting Rod13- Engine Oil14- Filters
Electrical Component
1- Alternator2- self starter 3- Spark Plug4- Electric Fuel Injector5- Ignition Coil6- Battery
Use Of Spares
Mechanical Component
Tappet Cover
Tappet cover is located on cylinder head
Tappet cover is used to keep engine oil in & dirt oil out. This part
is seen in internal combustion engines.
Use Of Tappet Cover
Engine Head
Engine head is a part which is fixed on the top of cylinder
block, houses & valves.
Engine head is bolted to cylinder block with head
gasket and cam shaft also.Inlet & exhaust ports are also machined in head.
Use Of Engine Head
Engine Block
Use Of Engine Block
Part of the engine where cylinder located is called engine block or
cylinder block.
Engine cylinder is a part where fuel is admitted in a reciprocating motion of
piston obtained by burning it.
Engine cylinder characterized in bore & stroke, bore represents inner diameter & stroke is the distance travel by piston.
Engine Oil Sump
Use Of Engine Oil Sump
Engine oil is stored in an oil chamber called
engine oil sump.
Engine is oil lifted by oil pump from sump
through a wire mesh strainer which retains
debris & dirt.
Cam Shaft
Use Of Cam Shaft
Cam shaft is a shaft in which cams are fitted or machined.
Function of cam shaft is to operate valves directly by sitting over or indirectly through a mechanism.
Opening or closing of valves is governed by camshaft which is coupled to crank shaft either directly through a reduction gear or indirectly through a pulley and timing belt.
Crank Shaft
Use Of
Crank Shaft
Crank shaft has projection bent & offset from the shaft axis of engine
Crankshaft is placed below the cylinder block in a
casing
Crank shaft converts the
sliding motion obtained from the piston into rotary motion
Piston & Piston Ring
Piston diameter is slightly less than bore of cylinder
Piston rings are fitted in piston & in direct contact
with cylinder liner to prevent piston wear
Piston is a cylindrical part
which moves up & down in cylinder.
Use Of Piston &
Rings
Fuel Pump
Fuel pump sprays pressurized fuel in to the cylinder & fuel gets ignited
when it comes in contact with the air.
The fuel pump consists of a spring loaded piston valve in a cylinder. When fuel from the fuel filter is introduced in the fuel pump, the spring loaded piston
applies pressure
Use Of Fuel Pump
Valves
Use Of Valves
Valves are used in IC engines called poppet valves.
Valves function is to take fresh
charge & exhaust waste gases.
Rocker Arm
Use Of Rocker Arm
Rocker arm rocks or oscillates a fixed
pivot rod in cylinder head.
Rocker arm transmits rotary motion of cam or
crank shaft through a tappet.
Crank Case
Use Of crank Case
The crankcase encloses crank shaft, connecting
rod & protect from dust , dirt materials.
The metallic housing in which crank shaft is
placed called crank case.
Connecting Rod
Use Of Connecting Rod
Connecting rod connects piston to
crank shaft
It converts the linear motion of the piston into rotary motion of
the crank
Engine Oil
Use of Engine
Oil
Engine oil lubricates engine spares and helps
in running smoothly.
Always change engine oil as per service instruction
or after every 3000 miles.
Filters
Use Of Filters
Fuel filter restricts the flow of fuel & it also collects debris that would pass
through carburetor.
Always change filters as per service manual of car,
otherwise calculate the miles you run.
Electrical Components
Alternator
Use Of Alternato
r
It is an AC generator which charges car’s
battery and power the electrical system when
car running.
Alternator is a device which converts
mechanical energy to electrical energy.
Self Starter
USE
Self starter is used for engine start. To accomplish this, the starter motor
is connected to a key operated switch and a starting battery.
When ignition switch is on, the circuit is completed and it pushes out pinion of motor shaft which goes into mesh
with flywheel gear.
Spark Plug
Use of Spark Plug
Spark plug ignites fuel in combustion
chamber at the end of compression
stroke.
Spark plug fitted in cylinder head on the
underside of combustion chamber threads on plug body.
Electric Fuel Injector
Use of Fuel Injector
It controls injection process so that required
amount of fuel is injected into the cylinder
before firing.
It helps in proper fuel distribution, improve
engine performance and lesser maintenance.
Ignition Coil
Ignition coil generates voltage to be supplied to spark plug. It has two coils, primary & secondary; primary is connected to battery & secondary to the capacitor.
Use Of Ignition Coil
Battery
Battery Use
Battery role is important for a car,
it provides electricity for all type of
function.
Always check battery condition & acid level for better
performance.
Check the car engine regularly & do preventing maintenance in proper time for a long life.
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