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What are the flow characteristics of automotive water pumps?

TIME:

2024-11-15

The flow characteristic of an automotive water pump is the relationship between

What are the flow characteristics of automotive water pumps?

The flow characteristic of an automotive water pump is the relationship between the flow rate and pressure that the pump can provide under different operating conditions. Generally speaking, the flow characteristics of automotive water pumps are nonlinear, that is, as the output pressure increases, the flow rate does not increase linearly. Its main characteristics include:

1. large flow point (Maximum Flow Point): automotive water pump at a certain speed can provide a large flow. At this point, the pump provides a large flow rate, but usually at this time the output pressure is low. 2.

2. Pressure - flow curve (Pressure-Flow Curve): the flow of automotive water pumps with the increase in output pressure and gradually reduce the formation of a curve. In the low pressure, the pump can provide a larger flow; but as the pressure increases, the flow gradually decreases.

3. Startup characteristics (Startup Characteristics): When the car starts, the water pump needs to quickly establish sufficient flow and pressure to ensure the normal operation of the cooling system. Therefore, automotive water pumps may produce a higher instantaneous flow rate at startup.

4. Stable Operating Range (Stable Operating Range): Within a certain range, the automotive water pump is able to stably provide the required flow and pressure. Beyond this range, the pump may not work properly or flow pressure characteristics will change significantly. 5.

5. Efficiency Curve (Efficiency Curve): the efficiency of automotive water pumps with the flow and pressure changes, usually in the large flow point near the high efficiency, but in the low flow or high pressure efficiency will be reduced.