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A hollow cylinder for conveying fluids.
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Related Terms |
POLYLINER
A perforated sleeve with longitudinal ribs that is used inside the cylinder of an injection-molding machine.
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PITCH CYLINDER
A cylinder representing the pitch surface of a spur gear.
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PISTON DISPLACEMENT
The volume which a piston in a cylinder displaces in a single stroke, equal to the distance the piston travels times the internal cross section of the cylinder.
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OVERHEAD-VALVE ENGINE
A fourstroke-cycle internal combustion engine having its valves located in the cylinder head, operated by pushrods that actuate rocker arms. Abbreviated OHV engine. Also known as valve-in-head engine.
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OVERHEAD CAMSHAFT
A camshaft mounted above the cylinder head.
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OPTICAL INDICATOR
An instrument which makes a plot of pressure in the cylinder of an engine as a function of piston (or volume) displacement, making use of magnification by optical systems and photographic recording; for example, the small motion of a pressure diaphragm may be transmitted to a mirror to deflect a beam of light.
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OPEN CAISSON
A caisson in the form of a cylinder or shaft that is open at both ends; it is set in place, pumped dry, and filled with concrete.
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MOLE DRAIN
A subsurface channel for water drainage; formed by pulling a solid object, usually a solid cylinder having a wedge-shaped point at one end, through the soil at the proper slope and depth.
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MINOR DIAMETER
The diameter of a minor diameter minor loop cylinder bounding the root of an external thread or the crest of an internal thread.
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MERCER ENGINE
A revolving-block engine in which two opposing pistons operate in a single cylinder with two rollers attached to each piston; intake ports are uncovered when the pistons are closest together, and exhaust ports are uncovered when they are farthest apart.
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