Table of Contents
- 1 Can a torque in a motor be increased?
- 2 What are the two major factors that affect the volumetric efficiency of a hydraulic motor?
- 3 How do you calculate torque in a hydraulic pump?
- 4 What are factors that will decrease overall volumetric efficiency of the engine?
- 5 Why does the speed of a motor depend on the pump?
- 6 What is the relationship between motor RPM and GPM?
- 7 What is the effect of load on pump output?
Can a torque in a motor be increased?
To increase the torque that a bit harder. All you can do, electrically (as you can do it mechanically via gears), is to reduce the source impedance to maximise the current that can be delivered for a given stator impedance. Rewind it with more turns of thinner wire.
What are the two major factors that affect the volumetric efficiency of a hydraulic motor?
Hydraulic pumps When a single number is given for volumetric efficiency, it will typically be at the rated pressure and speed.
How do you get more torque from an electric motor?
The way to increase the torque that the motor delivers, mechanically, would be:
- To increase the diameter of the wire in the windings (which is to say, completely remanufacture the motor)
- to have the output shaft coupled to a gear reduction setup, which would lower the final drive rpms, but increase the torque.
How do you calculate torque in a hydraulic pump?
Hydraulic Pump Motor Sizing
- Flow rate. Q = D n / 1000 (1) where. Q = flow rate (l/min) D = displacement of piston (cm3/rev)
- Shaft Torque. T = D p / 20 π (2) where. T = torque (Nm) p = pressure (bar)
- Shaft Power. Ps = T n / 9554 (3) where. Ps = shaft power (kW)
- Hydraulic Power. Ph = Q p / 600 (4) where. Ph = hydraulic power (kW)
What are factors that will decrease overall volumetric efficiency of the engine?
Intake and exhaust restrictions, valve timing, cylinder seal, gas inertia, runner design, and rpm are some of the factors that affect an engine’s volumetric efficiency. Barometric pressure, air temperature and humidity are some of the external factors affecting VE.
What affects electric motor torque?
Since the rated output power of a motor is a fixed value, speed and torque are inversely related. As output speed increases, the available output torque decreases proportionately. As the output torque increases, the output speed decreases proportionately.
Why does the speed of a motor depend on the pump?
It is the result not only of the motor characteristic but of the circuit in which it is used. It depends on the speed control method, the brand or type of flow control valve,and sometimes the characteristics of the associated pump may influence speed regulation. If any of these factors should change, the speed regulation also changes.
What is the relationship between motor RPM and GPM?
Motor RPM is in direct proportion to GPM. Lines curving upward to the left show motor performance at several GPM flows in various tests. The leftward curvature shows a loss of speed as torque load increases.
How does a hydhydraulic pump work?
Hydraulic Flow is developed as the pump rotating group is driven by a prime mover. Hydraulic Pump Basics. –Fluid is forced out of pump at the pump outlet. –A Partial vacuum is created at the pump inlet and atmospheric pressure forces fluid into pump from the reservoir.
What is the effect of load on pump output?
Therefore , in a load sense circuit , the pump will maintain the same output flow , independent of pump drive speed. If the load pressure increases, the pump outlet pressure will increase proportionately to maintain the constant pressure drop across the orifice.