The main piston has a large piston rod extending downwards from the piston to what is effectively a second smaller-diameter piston. The main piston is responsible for gas sealing and carries the piston rings.
In piston pumps, the reciprocating motion of the piston is used to move fluids. During its suction stroke, the piston draws fluid into a cylinder, and on the discharge stroke, it forces the fluid out.
Piston rings are essential for the proper functioning of a piston. They seal the gap between the piston and the cylinder wall to prevent leakage of combustion gases.
MSN: Here's how to tell if your piston rings are stuck (and what to do about it)
Here's how to tell if your piston rings are stuck (and what to do about it)
What makes piston ring selection and ring endgap so important to engine life and power? What's more, what makes that first engine firing so critical to proper break-in and longevity? Those first few ...
When I first started working for HOT ROD magazine more than 30 years ago, nearly all American domestic production cars used a thick, 5/64-5/64-3/16-inch piston-ring package. The top, usually ...
Hot Rod: Things to Know About Piston Rings Before Your Next Engine Build
If asked what you wanted for piston rings in your engine build, would you know how to answer? Piston rings have the most important job in your engine. We will get arguments on this one because there ...
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