Parts of An Automobile Engine

PARTS OF AN
AUTOMOBILE ENGINE
REPORTING BY; MARK JEPOY ZAPATERO
ORONAN
BTVTED-FSM 3
Parts;
Engine block- engine`s main body where all its vital parts
(crankshaft, camshaft, valves) are being placed inside.
Crankshaft- changes the points linear movement into rotational

movement, making it possible for the wheels to turn.
Connecting rods- transfer the up-down or linear motion of the

pistons to the crankshafts rotational motion by attaching the
piston to the crankshaft.
Pistons- is the main actors of the four stroke cycle that transfer the
explosive force of the burned expanded gases inside the cylinder to the
crankshaft via connecting rod with its up and down motion.
Flywheel- transfer the engine power of rotational motion via crankshaft

to the transmission system through a set of gears, enabling the wheels
to turn around, thus moving the car.
CYLINDER HEAD- found just above the cylinder block it contains

the crankshaft and the intake.
Engine valve- found in the cylinder head, it let the air in (intake valves) and
out (exhaust valves)of the cylinder which help ignite the fuel, driving the
pistons up and down the cylinder.
THE FOUR-STROKE CYCLE

Nickolaus Otto is credited with building the first four-stroke cycle engine in
1867, considered the basis of our modern engines. In his honour it is often
called the Otto cycle engine.
1. Intake Stroke
• The piston moves from TDC to BDC (down)
• The intake valve is open
• The exhaust valve is closed
• The piston creates a suction (vacuum) and air and fuel are sucked into the
cylinder
Intake Stroke
2. Compression Stroke
• The piston moves from BDC to TDC

• Both valves are closed
• The piston compresses the air and fuel mixture
COMPRESSION STROKE
3. POWER STROKE
• The piston moves from TDC to BDC (down)
• Both valves are closed
• The spark plug fires
• The fuel mixture burns rapidly. This expanding heated mixture forces the piston down
POWER STROKE
4. EXHAUST STROKE
• Piston moves from BDC to TDC (up)
• The intake valve is closed
• The exhaust valve is open
• The piston pushes the exhaust out
Valve spring- Lift the weight of the valve (intake and
exhaust) during the stroke cycles with the right timing with
the camshaft
Camshaft- responsible for the intake and exhaust valve

opening and closing actions at the right timing with
correct stroke interval in each cylinder possible
HEAD GASKET- act as a sealer in between the

cylinder head and block to avoid mixing of engine oil
and coolant
Fuel pump- transfer and circulates fuel under pressure from the fuel tank,
going to the fuel live and to cylinder necessary for the engine to operate.
Oil pump- transfer and circulates oil necessary for the engine lubrication of
its mechanical parts under pressure from oil pan through the oil galleries
to the engine.
Timing chain- transmit the crankshaft rotation to the camshaft, causing

the right timing as the valves to open and close at exact engine stroke.
Camshaft/valve cover- found at the very top of the engine, it closed and
seal the cylinder head, sealing and protecting the parts inside at the same
time preventing oil leakage.
Oil pan- where the engine oil stored and acts as the oil reservoir and
cooling area, found underneath the engine.
Oil filter- gets rid and filter oil contaminants and particles as it
circulates throughout the engine, keeping the engine clean in the
inside.
Thermostat- control`s the coolant going inside radiator, thereby keeping the
engine constant working temperature within optimum range.
Radiator- serves as the cooling are of the hot coolant coming from the
engine and with the flowing air going in the engine, cools down the coolant
before going back to the engine for cooling.
Starter- cranks the engine to the strart its operation as it then effectively
starts the car with the ignition switch.
Intake manifold- moves and distribute clean air necessary for the
combustion mixture in the cylinder from the outside to the engine.
Throttle body- can controls the amount of clean air that will get into
the engine.
Oil dipstick- metal stick used to measure the oil level deposited in
the oil pan.
Fuel injector- injects and spray atomized fuel to the premixed air
fuel mixture in the cylinder.
spark plug- a device that provides electric spark in gasoline

engines. Igniting the air fuel mixture during the power stroke.
Ignition coil- a step up transformer that converts the 12 voltes

battery supply to 25-30.000 volts. Enough to power up the
spark plug un creating electric spark or ignition.
Alternator- supplies the necessary electrical and lightning system at the
same time charges at the battery while running the engine
Exhaust manifold- collect the waste gasses from the combustion chambers
through exhaust gasses to the vehicle emission system.
Air filter- remove and filter contaminants and particles from the air
as it enters the engine and combustion chambers, keeping the
engine clean from the outside.
Fuel filter- removes an filter contaminants and particles from fuel
as it enters combustion chambers.
Distributor- a rotating shaft that direct un accurate firing order the

high current voltage to the spark plug produced by the ignition coil,
causing them to have spark for ignition.
Car battery- a rechargeable battery responsible for supplying

electrical current to the vehicle feeds current to the vehicle.
Thank you!
Activity
1-4. What are the Four- Stroke Cycle?
5. __________ it is lift the weight of the valve (intake and exhaust) during the stroke cycles with the right
timing with the camshaft.
6. __________ servers as the cooling are of the hot coolant coming from the engine and with the flowing air
going in the engine.
7. ___________ engine`s main body where all its vital parts.
8. ___________ it is changes the points linear movement into rotational movement.
9. What is the power stroke?
10. ___________ is the main actors of the four stroke cycle that transfer the explosive force of the burned
expanded gases inside the cylinder to the crankshaft via connecting rod with its up and down motion.
11-15. What is the parts of Automobile engine at least 5.

Parts of An Automobile Engine

Uploaded by

Copyright:

Available Formats

Parts of An Automobile Engine

Uploaded by

Document Information

Original Description:

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

Parts of An Automobile Engine

Uploaded by

Copyright:

Available Formats

PARTS OF AN

Crankshaft- changes the points linear movement into rotational

Connecting rods- transfer the up-down or linear motion of the

Flywheel- transfer the engine power of rotational motion via crankshaft

CYLINDER HEAD- found just above the cylinder block it contains

THE FOUR-STROKE CYCLE

• The piston moves from BDC to TDC

Camshaft- responsible for the intake and exhaust valve

HEAD GASKET- act as a sealer in between the

Timing chain- transmit the crankshaft rotation to the camshaft, causing

spark plug- a device that provides electric spark in gasoline

Ignition coil- a step up transformer that converts the 12 voltes

Distributor- a rotating shaft that direct un accurate firing order the

Car battery- a rechargeable battery responsible for supplying

1-4. What are the Four- Stroke Cycle?

7. ___________ engine`s main body where all its vital parts.

8. ___________ it is changes the points linear movement into rotational movement.

9. What is the power stroke?

11-15. What is the parts of Automobile engine at least 5.

You might also like