What is cylinder bore

The figure shows a computer animation of one cylinder of the Wright brothers' aircraft engine. A small section of the crankshaft is shown in red, the piston and piston rod are shown in gray, and the cylinder which contains the piston is shown in blue.

We have cut the cylinder so that we can note the movement of the piston. The crankshaft makes one revolution while the piston moves from the top of the cylinder lower left in the figure to the bottom upper right and back to the top. Since the piston is connected to the crankshaft, we can note the movement of the piston by the angle of rotation of the crankshaft. Zero degrees occurs when the piston is at the top of the cylinder.

Since there are degrees in one revolution, the piston is at the bottom when the crank angle is degrees. Information on use. Keywords : piston , piston ring , piston ring set , piston ring joint clearance, Piston ring gap , piston ring groove , cylinder liner , cylinder bore.

Product group : Pistons and components. This might also interest you. Information on use Assessment of used pistons Measurement and assessment of ring grooves Can you continue to use used pistons if you mount new piston rings? Information on diagnostics Sealing problems and piston ring damage skewing of pistons Bending or twisting of the connecting rod often occurs after engine damage.

Information on diagnostics Sealing problems and piston ring damage Ring flutter Ring flutter results in loss of power and high oil consumption. Use of cookies and data protection. I have read and taken note of this information.

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This site wil never do the following without your agreement: Draw conclusions regarding you as a person except where you have explicitly entered your details, e. Save and close. Other choke sizes exist, usually sized in increments of 0. Cylinder-bore shotguns are so called because they lack a choke. These types of guns are intended for self- or home-defense, where improved patterns at longer distances are neither required or desired.

Most other shotguns with chokes are used for hunting. The choke size will depend on the optimum range at which the gun will be used. A very narrow choke would be useful at approximately 30 to 50 yards.

If a target were closer, the pellets would be so concentrated as to perhaps destroy it completely, as in the case of small game birds. Cylinder-bore shotguns are also used to fire slugs, or one single projectile. These guns are used primarily for hunting big game, especially for deer. Shotguns come in two basic bore types as well. The rifled bore has a series of grooves on the inside of the barrel that gently twist around the barrel, imparting spin to the projectiles to help improve accuracy.

Smooth-bored guns lack these grooves. Christian Petersen has been writing professionally since , publishing for several online media outlets. He has been an amateur writer for many years writing short fiction and entertainment reviews.