Modifications for Conversion of Conventional Four Stroke Engine to a Six Stroke Engine
Paper Model of a Four-stroke Engine
7
PAPER MODEL OF A FOUR-STROKE ENGINE Target age group : grades 5-12 Materials needed : Copies of the two pattern pages printed onto white card stock, scissors, white glue, clear tape, 3/4-inch paper fasteners (2 per person), colored pencils in these colors: red, yellow or orange, and light blue. Time allowance for working with a group of more than 10 students : 35-40 minutes with grades 5-8, and 25-30 minutes with high school (If you have a smaller group you may need less time.) Directions: Make copies of the two patterns pages on white index card stock. Print out copies of the instruction sheets on regular paper. (Two students could share a copy.) Assemble the engine according to the instructions on these sheets. ellenjmchenry.com
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Purpose of activity: To learn how a four-stroke engine worksA fun way to learn about the four-stroke engine with this fun and free activity. More details (including a video of this in action) available at http://ellenjmchenry.com/id139.htmlMany more free games and other publications both free and for sale at my website:http://ellenjmchenry.comDescription of activity: This is a cut-and-assemble project where students make a paper model that really "works."Target age group: grades5-12Time allowance: This will take more time if you are working with a large group. For a group of a dozen or more (and only one or two adults) allow about 40 minutes for grades 5-8, 30 minutes for high school. If you are working with just one or two students, you may be able to assemble it in 15-20 minutes.Materials needed: Photocopies of pattern pages, scissors, X-acto knife with sharp point, white glue, tape, paper fasteners, colored pencils in red, yellow or orange, and light blue.
Transcript of Paper Model of a Four-stroke Engine
PAPER MODEL OF A FOUR-STROKE ENGINE
Target age groupTarget age group: grades 5-12
Materials needed: Copies of the two pattern pages printed onto white card stock, scissors, white glue, clear tape, 3/4-inch paper fasteners (2 per person), colored pencils in these colors: red, yellow or orange, and light blue.
Time allowance for working with a group of more than 10 studentsTime allowance for working with a group of more than 10 students: 35-40 minutes with grades 5-8, and 25-30 minutes with high school (If you have a smaller group you may need less time.)
Directions:Make copies of the two patterns pages on white index card stock. Print out copies of the
instruction sheets on regular paper. (Two students could share a copy.) Assemble the engine according to the instructions on these sheets.
ellenjmchenry.com
THE FOUR-STROKE ENGINE STROKE 1: Open IN valve to let fuel/air mixture in. Make the piston go down. Close IN valve.STROKE 2: Make the piston go up to compress the fuel/air mixture.STROKE 3: Fire the spark plug, then move the piston down again.STROKE 4: Open OUT valve to let out exhaust. Move the piston back up. Close OUT valve.
