camshaft

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camshaft

Engineering a shaft having one or more cams attached to it, esp one used to operate the valves of an internal-combustion engine

Camshaft

 

a distributing shaft of a machine; a shaft with cams that impart motion to the separate mechanisms of the machine in a given sequence. For example, in internal combustion engines the camshaft allows opening and closing of the valves at the proper times; in fuel pumps the plungers are worked by cam action. Camshafts are stamped from steel or cast from high-strength cast iron. Camshaft cams and journals are hardened to a Rockwell C hardness of 53–62, after which they are ground and polished.


Camshaft

 

the part in the timing mechanism of a machine, instrument, or apparatus that ensures a definite order in the execution of functions and the cyclic recurrence of the operation. In internal-combustion engines, a camshaft is part of the valve-timing system and has a specified number of cams, which corresponds to the number of cylinders. It is rotated by a connecting mechanism from the crankshaft so that the operation of the valves and pistons is coordinated. In various automatic machines, camshafts are part of the control systems of production and operating processes that conform to a specified program. Programs can be changed by using replaceable camshafts corresponding to the appropriate operating cycle, or by using camshafts wih cams that can be moved along the shaft or turned to a certain angle, thus changing the eccentricity.

camshaft

[′kam‚shaft]
(mechanical engineering)
A rotating shaft to which a cam is attached.

camshaft

camshaftclick for a larger image
A straight, gear-driven shaft that contains lobes used to operate the intake and exhaust valves of a reciprocating engine. The camshaft is geared to the crankshaft in such a way that valves close and open at the correct time relative to the position of the piston in the cylinders.
References in periodicals archive ?
A forged steel crankshaft provides optimal strength in the bottom end, while the cylinder heads include four valves per cylinder, with a dual overhead camshaft design incorporating infinitely variable cam phasing.
0-liter DOHC I-4 engine with twin independent variable camshaft timing (Ti-VCT), direct gasoline injection and E85 flex fuel capability that will deliver a projected 40 mpg highway
Lake Erie supplies Ford with the lapping films used to microfinish the camshaft lobes after they've gone through the grinders.
Initial work concentrated on successfully building advanced vacuum cast camshafts for Ford racing cars.
Chevrolet's VVT system uses a hydraulic mechanism to twist the camshaft relative to the crankshaft position so that the valves can be opened and closed earlier or later.
Dias makes the point that if you have 10 machines grinding camshafts, and you're using the Studer Schaudt two in-one dual process single-chucking approach, and one machine goes down, you're still producing camshafts on the other nine machines.
The unique properties of powdered metal camshafts, which have sintered cam lobes which are bonded metallurgically to steel tubes, include lighter weight and superior anti-pitting characteristics, benefits that translate to increased performance and longer life.
in automotive camshaft castings, based in Muskegon, Michigan.
Heaton previously held the position of new business manager for the composites and camshafts group of T&N.
Dana Engine Systems combines the strength and capabilities of Victor Reinz(R) gaskets and sealing products, Perfect Circle(R) power cylinder and heavy duty camshafts, Glacier Vandervell engine bearings, Fluid System Products and Plumley powertrain components.
Michael Verwilst, senior vice president, Powertrain Systems - Americas, announces the appointment of Robert Claycomb to vice president, Operations, Bearings, Camshafts, Connecting Rods and Sintered products, Powertrain Systems - Americas, effective immediately.