connecting rod

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connecting rod

[kə′nekt·iŋ ‚räd]
(mechanical engineering)
Any straight link that transmits motion or power from one linkage to another within a mechanism, especially linear to rotary motion, as in a reciprocating engine or compressor.

Connecting Rod


a link in a plane mechanism that is connected to other moving links by means of rotating kinematic pairs and that describes a complex two-dimensional motion.

Connecting rods are an important component in widely used crank-slide mechanisms, which convert the reciprocal motion of a slide (the piston) into the rotary motion of a crank (the crankshaft), or vice versa. In piston engines, compressors, and pumps, the connecting rod generally has an H-shaped cross section; the end connected to the piston (the small, or piston end) is not detachable, and the big end, connected to the crankshaft, is demountable to allow assembly of the mechanism.

In forging and press equipment, the connecting rod end is sometimes of a special design that allows acceptance of high loads in a single direction; connecting rods of both constant and variable length are also used to control the position of a slide. The length of the connecting rod may be varied by means of a rod, the threaded end of which is screwed into the body of the connecting rod and the other (spherical) end of which forms a spherical kinematic pair with the slide.


connecting rod

The rod connecting the piston and transmitting power to the crankshaft of a reciprocating engine.
References in periodicals archive ?
The prototype connecting rods in question are first forges from powdered metal prior to grinding to achieve the required flatness and parallelism.
When all factors were considered, a corporate make versus buy analysis, combined with new equipment, resulted in the manufacture of connecting rods in house, replacing an offshore supplier.
Both analyses are carried out for the single components piston, connecting rod and crankshaft as well as for an assembly of piston, piston pin, connecting rod, crankshaft and flywheel.
The crankshaft and counterweight assembly exhibited lubrication distress, thermal damage and mechanical damage concentrated at the #2, #3 and #4 connecting rod journals.
12-4 was used to calculate how much the connecting rod deforms when a load of 60 kN, which is a typical cylinder pressure value, is applied to the connecting rod's upper end whose surface receives a piston pin.
In operation, the connecting rod is subjected to dynamic inertia loads it must be adequately rigid and light in weight as well.
Rajkot, Gujarat India), a manufacturer of connecting rods for automotive and other applications.
The connecting rod system was acted by a three-phase motor AC power of 25 kW with constant speed 1500 [rpm], through a variator with friction, so that at the level of the connecting rod, there could be realised the variable speed in range 60-240 [rpm].
Figure 2 shows a failed connecting rod that sustained hydrostatic lock.
Objective of the optimization task was to minimize the mass of the connecting rod under the effect of a load range comprising the two extreme loads, the peak compressive gas load, such that the maximum, minimum, and the equivalent stress amplitude are within the limits of the allowable stresses.
The company is recognized as The Official Connecting Rod Manufacturer for NASCAR.