
AM AirFlow
Presentation
•
Mathematics, Specialty, Other
•
9th - 12th Grade
•
Medium
David Class
Used 4+ times
FREE Resource
4 Slides • 6 Questions
1
AM AirFlow
Calculate the Air Flow in an engine
2
Multiple Choice
We are given the bore and the stroke. Which if these is the height of the cylinder?
Bore
Stroke
Neither
3
Multiple Choice
The bore is what measurement for our calculations?
The Height of the cylinder
The radius of the cylinder
The diameter of the cylinder
None of the others
4
Kia Soul 2019 Base Model 4 cylinder
Bore of 77mm and a stroke of 85.44. Find the volume of the individual cylinder in cm^3, the volume of the whole engine in cm^3, and the volume of the engine in Liters.
So first convert to cm by dividing bore and stroke by 10. Then use the cylinder formula to calculate a single cylinder: pi(bore/2)^2*(stroke).
Round your answer to hundredths (two numbers after the decimal)
Calculate the whole enginge by multiplying by the number of cylinders.
Then convert the cm^3 to Liters by dividing by 1000. Round all answers to hundredths.
5
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6
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7
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8
Now we are working on air flow
Air flow is measured in grams/second
The Liters of the engine will tell us how much air will fill the engine every two revolutions of the engine
We will need to multiply by the number of revolutions per minute
Then we need to convert from Volume to Mass by using 1.29 grams = 1 Liter
Then convert from minutes to seconds
Multiply by the throttle % and Volumetric Efficiency% as decimals.
9
Finding the air flow with a 1.65 L vehicle, 1100 idle at 12% throttle and 84% Volumetric Efficiency
1 fill1.65L⋅1L1.29g⋅2rev1fill⋅min1100rev⋅60 Sec1min⋅(0.12)⋅(0.84)=sec1.97grams
10
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AM AirFlow
Calculate the Air Flow in an engine
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