Dynamic Pressure Gradient Model of Axial Piston Pump and Parameters Optimization

Table 1

The original parameters of the valve plate and piston pump.

Variable	Valve
Close angle 𝜑0	12°
Cross angle Δ𝜑	5°
Wrap angle of the V-groove 𝜑Δ	12°
Opening angle of the V-groove 𝜃1	30°
Vertex angle of the V-groove 𝜃2	90°
Radius of the distribution circle of pistons 𝑅	16.85 mm
Piston number	9
Rotational speed of the Pump 𝜔	7800 r/min
Swashplate angle 𝛾𝑠	14.5°