Engines as all motorcars have, have cylinders to compress the fluids for combustion. These cylinders have a very practical volume and in fact is exactly why we have the "size" of a car mentioned as a 2L or a 1.4L vehicle. That volume of the cylinders combined is directly related to the power and how expensive the car would be to drive. Other examples are the volume in most containers (which are cylindrically shaped) are to be known for planning purposes. How much liquid goes into any tank before it is full. Fuel stations have these containers for their fuel. Most silos are cylinders of a huge shape and one needs to determine at any stage how much volume is currently in it and how much capacity is still left over. Many tanker trucks actually have a cylinder just instead of standing upright, lying down horizontally. Had you been the owner of that tanker you would be very much be interested to the volume in that cylinder as this directly means the cost and profit or in the case of an accident, how much is lost or spilled should you be the cleaning agency. There are many many more examples of cylinders and their volumes in daily life, but these should open your mind to quite a number of daily applications for it. New Answer: You would need to understand Cylinder Volume if, for example you wish to change the compression ratio of a Race Engine. Cylinder Volume in this case would be the volume from the Top of the cylinder Deck to the top of the piston at Bottom Dead Center. On a flat top piston calculation is relative simple. You take the diameter of the cylinder and by means of "Pi" 3.1416, you determine the area of the circle and multiply it by the Stroke of the Engine. Example a 2.4 Ltr. Mercury O/B Engine. The cylinder has a 3-3/8" bore, and a 2.650" Stroke, so: Area = PI R2, or 3.1416 x Radius squared (radius of 3.375 = 1.6875 sq. (or, 1.6875 X 1.6875 = 2.876", now multiply X PI (3.1416) = 9.0352 sq ". We must now determine Cylinder sweep Cyl. Sweep = Bore Area x Stroke, stroke on this engine is 2.650", so 9.0352 SQ. IN. X 2.650" = 23.9443 Cubic IN. Cubic inches X no. of Cylinders = Total engine displacement 23.9443 cu. in X 6 Cylinders = 143.66 Cubic In. Displacement Note: 2.4 Ltr. = 2399.99 Cubic Centimeters, or 142 CU.IN. Head Volume is never used in determining engine Displacement, Head Volume is used to determine compression ratio. Heads are usually C.C'ed by a Burret to determine volume in C.C's. You must also determine the thickness of the Head gasket in this calculation. Everything above the engine deck is used in determining Head Volume. To calculate Gasket volume do it exactly as you did in determining Cylinder or Sweep Volume. Take that volume convert into C.C.'s. add it to Cylinder Head Volume for total head Volume. Take Sweep Volume and divide it by Total Head volume, and you will have the Compression Ratio @ 1 Atmosphere Press.
Assuming the 80 inch is the outside measurement and not the internal bore size. Formula is Circumference = radius squared timed by pi (3.1416) 40 × 40 × 3.1416 = 5026.56 inches
9.4247 cubic inches
This is the formula. Area = .7854 x bore^2 A = .7854 x 30.25 (5.5^2) A= 23.75 sq.in Volume = Area x stroke 23.75 x 5.5 = 130.625 cubic inches. *This is just one piston. If engine was a nine cylinder then 130.625 x 9 = 1175.625*
Bore x Stroke x Number of cylinders = cubic inches. Another contributor says: Wrong! Right answer is: Bore AREA x Stroke x Number of cylinders. That simply means that the piston or bore AREA multiplied by the piston's movement limit is the volume of each cylinder. Multiply that by the number of cylinders. For cubic inches capacity (or volume displacement) all units of measurement must be of course in inches.
The bore refers to the Inside diameter of the cylinder. The Piston will be nearly the same diameter, with the piston rings making up the difference. Convert the bore to area by multiplying by pi and dividing by four, and multiply by the stroke and the number of cylinders and you have the volume displacement of the engine.
Bore is the diameter of the piston/cylinder, stroke is the distance the piston can travel between its highest position and its lowest position in the cylinder.
this is the diameter of the cylinder hole in the engine block for the piston
To calculate the bore size of a cylinder needed for a hydraulic power pack, you need to determine the force required to move the load and the pressure of the hydraulic system. Use the formula: Force = Pressure x Area. Rearrange the formula to solve for Area, then divide the force by the pressure to determine the required area. Using the formula for the area of a cylinder (Area = π x (Bore Radius)^2), you can then calculate the bore radius needed for the cylinder.
If there was no damage to the cylinder bore then you will not need to bore it oversize.If there was no damage to the cylinder bore then you will not need to bore it oversize.
Bore x Stroke x Number of cylinders = cubic inches. Another contributor says: Wrong! Right answer is: Bore AREA x Stroke x Number of cylinders. That simply means that the piston or bore AREA multiplied by the piston's movement limit is the volume of each cylinder. Multiply that by the number of cylinders. For cubic inches capacity (or volume displacement) all units of measurement must be of course in inches.
The bore of a cylinder describes is measurement, in millimeters or inches, of the inside diameter of the cylinder. The diameter is the width across.
piston slap is when the piston inside the cylinder is somewhat smaller than the cylinder bore. when the piston moves up and down, it ends up moving side to side too. this causes a knocking/slapping sound as the piston slams into the cylinder walls.this can cause harm if the play between the piston and bore are significant, otherwise it's nothing to worry about. if the car is hammering you might want to take it to a garage.Piston slap is the piston lose is the cylinder and it is making a rattling noise.Hope this helps.
Generally the nominal diameter of cylinder bore is kept little smaller at cylinder head than at the bottom. The engine head will be generally heat and it tends to expand for these high temperatures. To prevent the bore diameter at head to exceed diameter at bottom,piston engine bore is ground with a slight choke.