1 Introduction
2 Pump Modeling
2.1 Description of the Pump
2.2 Valve Plate
2.3 Dynamic Model
2.4 Fluid Properties
3 Generation of Noise
3.1 Outlet Flow Rate
3.2 Inlet Flow Rate
3.3 Swash Plate Moment
4 Parametric Study
Name of structure variable | Default value | Parameter range | Optimized value |
---|---|---|---|
Starting location of outlet port \(\varphi\)s1 (°) | 21 | 18‒30 | 23.79 |
Ending location of outlet port \(\varphi\)e2 (°) | 161 | 154‒168 | 157.53 |
Starting location of inlet port \(\varphi\)s3 (°) | 161 | 154‒168 | 154.22 |
Ending location of inlet port \(\varphi\)e4 (°) | 19 | 18‒30 | 26.11 |
Location of damping hole one \(\varphi\)l5 (°) | 2 | 1.8‒2.2 | 1.84 |
Radius of damping hole one r1 (mm) | 0.55 | 0.3‒0.7 | 0.50 |
Location of damping hole two \(\varphi\)l6 (°) | 10.7 | 8‒12 | 10.26 |
Radius of damping hole two r2 (mm) | 0.7 | 0.5‒1 | 0.72 |
Location of damping hole three \(\varphi\)l7 (°) | 169.3 | 168‒172 | 171.96 |
Radius of damping hole three r3 (mm) | 0.55 | 0.3‒0.7 | 0.48 |
4.1 Effects of Damping Hole One
4.2 Effects of Damping Hole Two
4.3 Effects of Damping Hole Three
Parameter | Value (mm) | pmin (10−2 MPa) | pmax (MPa) | ΔQLP (L/min) | ΔQHP (L/min) | ΔMZ (Nm) |
---|---|---|---|---|---|---|
r
1
| 0 | 1.7 | 29.81 | 20.42 | 7.34 | 282.1 |
0.3 | 4.7 | 29.45 | 20.26 | 5.80 | 234.9 | |
0.55 | 4.7 | 29.12 | 20.06 | 3.51 | 186.2 | |
0.7 | 4.7 | 28.75 | 21.31 | 3.06 | 183.3 | |
r
2
| 0.5 | 4.7 | 29.11 | 20.06 | 4.37 | 186.2 |
0.7 | 4.7 | 29.12 | 20.06 | 3.51 | 186.2 | |
1 | 4.7 | 29.14 | 20.06 | 3.90 | 186.2 | |
r
3
| 0.3 | 7.9 | 29.51 | 44.76 | 3.51 | 244.9 |
0.55 | 4.7 | 29.12 | 20.06 | 3.51 | 186.2 | |
0.7 | 3.1 | 28.95 | 15.04 | 3.51 | 197.7 |
5 Multi-objective Optimization
5.1 Definition of the Objective Functions
5.2 Definition of the Variables and Constraints
5.3 Optimization Procedure
5.4 Optimization Results
5.5 Noise Measurement
No. | Description | Detail |
---|---|---|
1 | Inlet pressure sensor | NS-I1, 0-1 MPa, accuracy 0.3% FS |
2 | Inlet temperature sensor | SBWR/Z, range -25-120 °C, accuracy 0.25% FS |
3 | Electric motor | Y315L2-2, speed range 300-2980 r/min |
4 | Shaft speed sensor | JC2C, range 0-4000 r/min, accuracy ± 1 r/min |
5 | Shaft torque sensor | JC2C, range 0-2000 Nm, 0.2 class accuracy |
6 | Outlet pressure sensor | NSI1, range 0-40 MPa, accuracy 0.3% FS |
7 | Outlet flow meter | LC-A50, range 0-400 L/min, 0.2 class accuracy |
8 | Pressure relief valve | DBDH6P1X400 |
9 | Test pump | 71 cc/rev |