Dòng chảy

Q = n ⋅ V s t r o k e ⋅ η v o l {\displaystyle Q=n\cdot V_{stroke}\cdot \eta _{vol}}

Với

Q = Flow in cubic meter per second  [ m 3 s ] n = revolution per second [ r e v s ] V s t r o k e = Swept volume in cubic meters [ m 3 r e v ] η v o l = Volumetric efficiency [ ] {\displaystyle {\begin{aligned}Q&={\text{Flow in cubic meter per second }}&\left[{\frac {m^{3}}{s}}\right]\\n&={\text{revolution per second}}&\left[{\frac {rev}{s}}\right]\\V_{stroke}&={\text{Swept volume in cubic meters}}&\left[{\frac {m^{3}}{rev}}\right]\\\eta _{vol}&={\text{Volumetric efficiency}}&\left[\right]\end{aligned}}}

Công suất

P = n ⋅ V s t r o k e ⋅ Δ p   η m e c h {\displaystyle P={n\cdot V_{stroke}\cdot \Delta p \over ~\eta _{mech}}}

where

P = Power in Watt [ N m s ] n = Revolution per second [ r e v s ] V s t r o k e = swept volume [ m 3 r e v ] Δ p = pressure difference over pump [ N m 2 ] η m e c h , h y d r = Mechanical/hydraulic efficiency [ ] {\displaystyle {\begin{aligned}P&={\text{Power in Watt}}&\left[{\frac {Nm}{s}}\right]\\n&={\text{Revolution per second}}&\left[{\frac {rev}{s}}\right]\\V_{stroke}&={\text{swept volume}}&\left[{\frac {m^{3}}{rev}}\right]\\\Delta p&={\text{pressure difference over pump}}&\left[{\frac {N}{m^{2}}}\right]\\\eta _{mech,hydr}&={\text{Mechanical/hydraulic efficiency}}&\left[\right]\end{aligned}}}

Hiệu dụng kỹ thuật

n m e c h = T a c t u a l ⋅ 100 T t h e o r e t i c a l {\displaystyle n_{mech}={T_{actual}\cdot 100 \over T_{theoretical}}}

where

n m e c h = Mechanical pump efficiency percent T t h e o r e t i c a l = Theoretical torque to drive T a c t u a l = Actual torque to drive {\displaystyle {\begin{aligned}n_{mech}&={\text{Mechanical pump efficiency percent}}\\T_{theoretical}&={\text{Theoretical torque to drive}}\\T_{actual}&={\text{Actual torque to drive}}\\\end{aligned}}}

Hiệu dụng thủy lực

n h y d r = Q a c t u a l ⋅ 100 Q t h e o r e t i c a l {\displaystyle n_{hydr}={Q_{actual}\cdot 100 \over Q_{theoretical}}}

where

n h y d r = Hydraulic pump efficiency percent Q t h e o r e t i c a l = Theoretical flow rate output Q a c t u a l = Actual flow rate output {\displaystyle {\begin{aligned}n_{hydr}&={\text{Hydraulic pump efficiency percent}}\\Q_{theoretical}&={\text{Theoretical flow rate output}}\\Q_{actual}&={\text{Actual flow rate output}}\\\end{aligned}}}