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How Fast?!? (Posted on 2005-08-08) Difficulty: 2 of 5
You are driving a 3.2 Litre, V6 car whose engine speed is 3500rpm.

If the piston face diameter is 80mm, then what is the average speed of the piston?

3.2 litres, refers to total piston volume

  Submitted by Juggler    
Rating: 4.0000 (1 votes)
Solution: (Hide)
Basically, a V6 engine type means there are 6 pistons, each with the same displacement, 3.2 litres is 3200cc, this means that each piston has a displacement of 533.33cc

the piston diameter is 80mm, this means that the C.S.A of the piston is 5026mm^2, or 50.26cm^2

this equates the stroke to 533.33/50.26 = 10.612cm or 106.12mm

so in every revolution of the engine each piston will travel 106.12 x 2 = 212.24mm if the engine is rotating at 3500 rpm the average piston speed is 3500 x 212.24 mm/min = 742840mm/min = 742.840 M/min = 44.5704 Km/Hr

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Puzzle AnswerK Sengupta2022-07-31 22:20:10
Correct a typoKenny M2005-11-10 16:27:43
The answerKenny Meloche2005-11-09 14:22:19
A guessJoe2005-08-24 19:12:26
SolutionMax velocityCharlie2005-08-08 14:07:32
SolutionAnother way of saying it.Charlie2005-08-08 13:49:38
Solutionsolutionbekiryenilmez2005-08-08 12:50:36
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