Tags

Unit Industry Sector
Transportation

Unit Originally Created By: David Espinoza

Engine Fundamentals

Part of Course: Automotive Technology 1 and 2 Model

Unit Overview / Details

The lessons in this unit include the engine systems found in the automotive industry such as two stroke, four stroke and diesel engines.  Starting and charging systems will also be included.

Instructional Time

Classroom/Lab
14 Days

Content/Concepts

This unit covers:

  • Identify the major parts of a typical automotive

engine.

  • Describe the four-stroke cycle.
  • Define common engine terms.
  • Explain the basic function of the major parts

of an automotive engine.

  • Understand the fundamentals of an automotive ignition system
  • Cite and demonstrate safe working practices

related to engines.

Standards

Lessons in this Unit

  • After studying this chapter, students will be able to:

    • Identify the major parts of a typical automotive engine
    • Describe the four-stroke cycle
    • Define common engine terms
       
    Engine Fundamentals
    3 Hours
  • This lesson will explain the steps to remove and replace an engine valve from an overhead valve engine.

    Classroom/Lab
    2 Days
  • Introduce students to the operational theory and practical service techniques of the automotive starting system. Students will be introduced to the specialized diagnostic and service equipment required to perform these tasks. Students will also understand how to interpret customer complaints as they relate to this system.

    1 Class Period
    3 Hours
  • Introduce students to the operational theory and practical service techniques of the automotive charging system. Students will be introduced to the specialized diagnostic and service equipment required to perform these tasks. Students will also understand how to interpret customer complaints as they relate to this system.

    3 Class Periods
    3 Hours
  • Upon completion of this lesson, students will be able to demonstrate knowledge of the four stroke cycle and the ingredients to internal combustion.  Students will identify events taking place within the cycle using a projected animation and actual cutaway engines.

    One Class Period
    58 Minutes
  • Upon completion of this session, students will be able to explain how the fuel/air charge is created, how it enters the cylinder and how it is used in the engine.  They will also be able to identify major carburetor components and explain the pressure/vacuum correlation to carburetor function. The session will conclude with students performing adjustments on a small engine carburetor using colored water as fuel and on an actual running automobile engine using a gas analyzer.

    One class period
    58 Minutes
    One Open Lab
    58 Minutes
    Label
    0 Minutes
    Label
    0 Minutes
  • This in an introduction to what is Bore and Stroke; the meaning of short and long, larger and small; and to introduce the meaning of over square and under square. (Note: This is not about calculating the volume of a cylinder using math.)

    One Period Class
    87 Minutes
  • This lesson is designed for entry level students to understand the four strokes of an engine and how a 4 stroke engine functions.

    One class
    55 Minutes
  • Upon completion of this session, students will be able to identify air movement events in relationship with mechanical events within a four stroke cycle of a single cylinder internal combustion engine. 

    Students will be able to determine where an engine is in its cycle by looking at mechanical drawings and cutaway engines and explain which event is taking place at that time.

    Students will understand the minimum compression needs for internal combustion with gasoline and acceptable cylinder compression variances.

    Students will perform cranking compression tests and cylinder leakage tests to determine the cause of failure.

    2 class periods
    2 Hours
  • Upon completion of this session, students will have an understanding of how a primary ignition signal is generated and be able to diagnose the lack of a primary ignition signal using a voltmeter and an oscilloscope.  They will also understand how an ignition coil functions and be able to diagnose a failed ignition coil using an ohm meter and an ignition scope.

    Primary ignition
    2 Hours
    Secondary ignition
    1 Hour
  • Students will learn to diagnose and repair ignition problems. Students will learn that there are some common problems to look for, such as a loose spark plug wire or an arcing spark plug wire, when attempting this service.

    Class time
    55 Minutes