2. The pressure of a hydraulic working cylinder is intensified by using a pressure intensifier. The intensifier have area A₁ against the pump pressure pp and area A2 against the load pressure PL. a) Calculate the pressure ratio A₁/A2 needed to lift the mass m=20000kg, when the pump pressure pp=280bar and work force resisting the piston motion Fw=100kN. The piston diameter D=80mm. pp is approximated to be constant. Losses, including the directional valve loss, are neglected. JA₂ PL m b) What is the lifting speed of the mass, if the pump flow Qp is 120 l/min.

2. The pressure of a hydraulic working cylinder is intensified by using a pressure intensifier. The intensifier have area A₁ against the pump pressure pp and area A2 against the load pressure PL. a) Calculate the pressure ratio A₁/A2 needed to lift the mass m=20000kg, when the pump pressure pp=280bar and work force resisting the piston motion Fw=100kN. The piston diameter D=80mm. pp is approximated to be constant. Losses, including the directional valve loss, are neglected. JA₂ PL m b) What is the lifting speed of the mass, if the pump flow Qp is 120 l/min.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

2. The pressure of a hydraulic working cylinder is intensified by using a pressure
intensifier. The intensifier have area A₁ against the pump pressure pp and area A2
against the load pressure PL.
a) Calculate the pressure ratio A₁/A2 needed to lift the mass m=20000kg, when the
pump pressure pp=280bar and work force resisting the piston motion Fw=100kN.
The piston diameter D=80mm. pp is approximated to be constant. Losses, including
the directional valve loss, are neglected.
A₂
PL
b) What is the lifting speed of
the mass, if the pump flow Q₁ is
120 1/min.

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