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n.1.the leakage of gases from the combustion cylinder of an internal combustion engine between the piston and cylinder wall into the crankcase.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
This causes energy loss, swelling of the case, gas blowby around the projectile, increases jump to the rifling and a loss in pressure and velocity.
The seal rings on the Yamada pumps feature a new carbon fiber fill that provides more durability, and for pumps sized 1-3 inches the seals are now comprised of one piece of material to reduce air "blowby" and increase air pressure efficiency.
Gaps on the gas valves, as with the M16, should always be positioned so they remain separated from each other to prevent excessive gas blowby.
That blowby in the crankcase mixes with oil to make acid and sludge.
ENGLAND'S hopes of levelling the Test series in the Caribbean were landed a punishing blowby West Indian defiance at Queen's Park Oval.
She adds a second emotional blowby revealing that she intends to give up the baby to a childless couple.