The intensifier piston has seven times more surface area than the plunger ... to hydraulic pressure, thereby controlling engine performance. It’s in charge of the high-pressure oil pump ...

At high rpm, this delays hydraulic lifter pump-up because the ... lifters that have a paperclip-type retaining ring because hydraulic pressure may cause the plunger body to pop out of the groove ...

Plunger or piston pumps are one type of commonly used positive-displacement ... operate at discharge pressures of 20 to 30 psi. High-pressure blades with thicker cross sections boost operating ...