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Four-stroke Engine Guide for Mechanical Engineering Students
1. Next
ARRDEKTA INSTITUTE OF TECHNOLOGY
GUIDED BY
PROF R.S.SAGAR IN MECHANICAL DEPT.
PROF.M.R.CHAUDHARY IN MECHANICAL DEPT
PREPARED BY
130930119064 PARMAR DEVENDRASINH
130930119065 PARMAR DHARMESHKUMAR BABULAL
130930119066 PARMAR YOGENDRASINH
130930119067 PARMAR YUVRAJSINH JASHVANTSINH
130930119068 PATEL AKSHAY ARAVINDBHAI
130930119070 PATEL ANUPKUMAR ARVINDBHAI
130930119071 PATEL DARSHITKUMAR MUKESHBHAI
2. Orientation
Throughout this lesson on four-stroke engines, learner
will self-navigate through this PowerPoint
presentation
Be sure to click on every link
Learner will be quizzed at the end of the lesson
Click on Next to move on, or Back to go back.
Next
Back
3. Orientation Continued
Material that will be covered:
Four-stroke engine basics
Other engine types
Basic components of a four-stroke engine
The four-stroke cycle
Next
Back
5. The Basics
A four-stroke engine:
Is an internal combustion engine
Converts gasoline into motion
Is the most common car engine type
Is relatively efficient
Is relatively inexpensive
Next
Back
6. Other Engine Types
Two-stroke engines
Diesel engines
Rotary engines
Turbine engines
Steam engines
Next
Back
7. Basic Components of Four-Stroke
Engines
Intake Valve
Valve Cover
Intake Port
Head
Coolant
Engine Block
Oil Pan
Oil Sump
Crankshaft
Camshaft
Exhaust Valve
Spark Plug
Exhaust Port
Piston
Connecting Rod
Rod Bearings
Back
Next
Diagram
8. A. Intake Valve- opens at the proper time to let in air
and fuel.
Back
9. B. Valve Cover- Protects the valves and the valve
springs. Keeps dirt out and lubricating oil in.
Back
10. C. Intake Port- the passageway in a cylinder head for
the fuel and air to pass through.
Back
11. D. Head- a platform containing most of the parts of
the combustion chamber.
Back
12. E. Coolant- circulating water and antifreeze to keep
the temperature regulated.
Back
13. F. Engine Block- cast in one piece. The basis for most
of the parts of the engine.
Back
14. G. Oil Pan- where the oil is collected and recirculated.
Back
15. H. Oil Sump- the collected oil primarily for
lubricating the crankshaft and rod bearing
Back
16. I. Camshaft- a round shaft with lobes, that rotates to
open and close the fuel and exhaust valves.
Back
17. J. Exhaust Valve- open at the proper time to release
the exhaust
Back
18. K. Spark Plug- a device, inserted into the combustion
chamber for firing an electrical spark to ignite air-fuel
mixture
Back
19. L. Exhaust Port- the passageway in a cylinder head, for
the exhaust to pass through
Back
20. M. Piston- the part of the engine that moves up and
down in the cylinder converting the gasoline into
motion
Back
21. N. Connecting Rod- links the piston to the crankshaft.
Back
22. O. Rod Bearing- used to reduce friction to the rod and
crankshaft
Back
23. P. Crankshaft- converts the up and down motion of
the piston into a turning, or rotating motion
Back
24. The 4-Stroke Cycle
1.
2.
3.
4.
Intake
Compression
Combustion
Exhaust
Back Next
25. Intake- process of
filling the cylinder with
the proper air-fuel
mixture through the
intake valve.
Back
26. Compression- the
process of compressing
the air-fuel mixture in
the cylinder to make it
more combustible
Back
27. Combustion-the
process of igniting the
compressed air-fuel
mixture to create
motion and the over all
power of the engine.
Back
28. Exhaust- the process
of releasing the
exhaust out of the
cylinder through the
exhaust valve.
Back
29. Application
Now that you understand the basics of four-stroke
engines, how can you use this information in the real
world?
Back Quiz
30. Lets take a quiz to see what you have learned!
Back Quiz
31. 1. The ____ controls the amount of intake and the
release of exhaust.
a. head
b. valves
c. coolant
d. connecting rod
32. 2. The _____ Cycle is the ignition of the compressed
fuel-air mixture.
a. Exhaust
b. Combustion
c. Compression
d. Intake
33. 3. The most common type of engine?
a. diesel engines
b. 2-stroke engines
c. rotary engines
d. 4-stroke engines
34. 4. What part of the engine converts up and down
motion into a rotation motion?
a. crankshaft
b. piston
c. valve cover
d. camshaft
35. 5. What is the name of the
part listed?
a. intake valve
b. piston
c. oil pan
d. spark plug
