MODULAR TECHNOLOGY EDUCATION
Exploring the Internal Combustion Engine
Scope & Sequence 80137A
Published by Hearlihy P.O. Box 1747 Pittsburg, KS 66762 866-622-1003 E-mail:
[email protected] Web site: http://www.hearlihy.com
Exploring the Internal Combustion Engine
Learning Objectives
Module Description & Goals The internal combustion (IC) engine is a very interesting machine. It is a collection of precision parts assembled together so when gasoline, air, and an electrical spark are combined, energy is created. Engines are very simple if you have a basic understanding of their parts and operation. Someday you may need to know a little about how your lawn mower engine or automobile engine works. In this module, students learn about four-cycle, air-cooled, internal combustion, small gasolinepowered engines. They learn how engines operate using the principle of the four-stroke cycle. They also study the mechanical, electrical, and fuel systems. Engine parts identification and assembly are also emphasized. Students learn about some of the tools needed to properly repair and maintain these engines. These tools are used to assemble the parts into a completed engine. Small gas engines are internal combustion power plants; combustion takes place inside the cylinder. These engines are used in many types of equipment such as lawnmowers, mini-bikes, go carts, snow blowers, chain saws, and generators. Most small engines operate on the four-stroke cycle principle. Once students understand this four-stroke cycle, they will know basically how inboard boat engines, motorcycle engines, automobile engines, and many other gas engines operate. The Exploring the Internal Combustion Engine module offers students an opportunity to: • • • • • • • • • • • • • • • • • • •
Discover how the internal combustion engine was developed. Examine the four-stroke cycle of engine operation. Describe the basic operation of an internal combustion engine. Identify some of the tools used in engine assembly. Properly assemble an engine piston and rod. Recognize how to safely work with gas engines. Describe the function and parts of an engine block. Identify the components that are installed on an engine block. Make precision measurements using a vernier caliper. Properly remove and install the exhaust and intake valves, springs, and clips. Properly install the piston/rod assembly, crankshaft, and camshaft on the engine. Identify the different types of engine ignition systems. Properly install the flywheel, coil, and governor on an engine. Identify the parts of a spark plug. Properly install the cylinder head, spark plug, and breather on the engine. Identify the parts of the fuel system and their functions. Properly install the muffler, fuel tank, carburetor, air filter, and pull-start housing. Disassemble a small gas engine. Explore career opportunities associated with internal combustion engines.
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Exploring the Internal Combustion Engine
Learning Objectives
Interdisciplinary Skills The Exploring the Internal Combustion Engine module reinforces various skills the students are learning in other classes. Technology involves the practical application and use of math and science. The Modular Technology Education program is an activity-based, hands-on learning system; therefore, students gain a practical understanding of many interdisciplinary skills. Some of the interdisciplinary skills implemented in this module are listed below. Language Arts • Read daily instructions for comprehension. • Gather and record information. • Expand language communication skills by learning new terms. • Write answers to short-answer questions requiring creative thinking. • Summarize daily activities (Activity Journal Entry option). • Summarize module outcomes (Module Journal Entry option). Math • Recognize the importance of proper measuring techniques. • Make accurate measurements with a vernier caliper. Problem Solving • Properly assemble an engine piston and rod. • Properly remove and install the exhaust and intake valves, springs, and clips. • Properly install the piston/rod assembly, crankshaft, and camshaft on an engine. • Properly install the flywheel, coil, and governor on an engine. • Properly install the cylinder head, spark plug, and breather on an engine. • Properly install the muffler, fuel tank, carburetor, air filter, and pull-start housing. • Disassemble a small gas engine. Science • Recognize how a four-stroke cycle engine operates. • Describe the basic operation of an internal combustion engine. • Identify some of the tools and supplies used in engine assembly and maintenance. • Describe the function and parts of an engine block. • Identify the components that are installed on an engine block. • Identify the parts of a vernier caliper. • Identify the different types of engine ignition systems. • Identify the parts of a spark plug. • Identify the parts of the fuel system and their functions.
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Exploring the Internal Combustion Engine
Learning Objectives
Social Studies • Discover how the internal combustion engine was developed. • Recognize how to safely work with gas engines. • Discover how tools make work easier and safer and humans more productive. • Explore career opportunities associated with internal combustion engines.
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Exploring the Internal Combustion Engine
Learning Objectives
Career Opportunities Each Hearlihy module is designed to introduce and provide students with an understanding of a different area of technology, thus helping them to become more technologically literate. Becoming technologically literate helps students become better consumers, and it increases their knowledge of potential career opportunities. The Exploring the Internal Combustion Engine module is designed to introduce students to operation and parts of a four-stroke, small gas engine. Listed below are some possible occupations and careers associated with this subject area. You may want to obtain the latest publication of the Occupational Outlook Handbook. As an optional career-oriented activity, you could have students research one of the job titles listed below in regard to the nature of work, specific job tasks, earnings, advancement possibilities, and so on, and have them write a short report or summary of their findings. This will enable students to begin thinking about career opportunities. At the very least, students should be made aware of these publications for future reference. (See Activity 9 in the Student Lesson Plan for a career activity.) Aerospace engineers Aircraft and avionics equipment mechanics and service technicians Automotive service technicians and mechanics Bus mechanics CAD operators CNC operators CNC programmers Diesel service technicians and mechanics Drafters Electrical and electronic equipment assemblers Electrical engineers Electronic drafters Electronics engineers Engine and other machine assemblers Engineering technicians Industrial machinery mechanics Machinists Mechanical drafters Mechanical engineers Motorcycle mechanics Truck mechanics
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