Revolutions of a driving shaft

[heraclius]

Homework Statement

How many revolutions does a driving shaft of an eight cylinder four stroke engine perform until every cylinder has ignited once ?

Homework Equations

4 - 8 - 6 - 2

The Attempt at a Solution

Moreover, I would like to have information and understand the logical solution of the question.
Can anyone explain me as detailly as he/she can ?

Thanks in advance!

 

[berkeman]

Homework Statement

How many revolutions does a driving shaft of an eight cylinder four stroke engine perform until every cylinder has ignited once ?

Homework Equations

4 - 8 - 6 - 2

The Attempt at a Solution

Moreover, I would like to have information and understand the logical solution of the question.
Can anyone explain me as detailly as he/she can ?

Thanks in advance!

If it were a single cylinder, 4-stroke engine, how many revolutions does the drive shaft make per ignition? If you need help understanding engines, try this website:

http://en.wikipedia.org/wiki/Engine (check out the animation part-way down the page)

 

[Mene]

I would approach this question by first understanding the basic principles of a four stroke engine. In a four stroke engine, there are four stages that each cylinder goes through: intake, compression, power, and exhaust. During the intake stage, air and fuel are drawn into the cylinder. In the compression stage, the air and fuel mixture is compressed. In the power stage, the compressed mixture is ignited by a spark plug, causing an explosion that pushes the piston down and creates power. Finally, in the exhaust stage, the piston pushes the exhaust gases out of the cylinder.

With this understanding, we can determine that each cylinder needs to go through two revolutions of the driving shaft in order to complete all four stages. This is because the driving shaft rotates twice for every four strokes of the engine (hence the "4 - 8 - 6 - 2" equation). Therefore, in order for every cylinder to have ignited once, the driving shaft would need to rotate 16 times (2 revolutions per cylinder x 8 cylinders).

In summary, the driving shaft of an eight cylinder four stroke engine would perform 16 revolutions until every cylinder has ignited once. I hope this explanation helps to clarify the solution to the question.