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    The amount of flow required by a car’s wiper pump will be affected by a variety of factors, including the design of the wiper, the performance requirements of the sprinkler system, and the actual use scenario. The following is a detailed analysis of the flow size of the car wiper pump:

    I. Overview of traffic requirements
    The flow demand of the car wiper pump is mainly based on the following considerations:

    Spray coverage area: The wiper pump needs to provide enough flow to ensure that the water sprayed can cover the entire windshield, especially if dirt or rain needs to be cleaned quickly.
    Spray pressure: In addition to the flow rate, the pressure of the spray is also important, which determines whether the water can effectively adhere to the windshield and form a uniform water film.
    Use scenario: Different use scenarios (such as daily driving, rainstorm weather, muddy road surface, etc.) will also have different flow requirements for wiper pumps.
    2. Specific flow range
    According to the standards and requirements of some automotive wiper test stands, we can have a general understanding of the flow requirements of wiper pumps:

    Wet operation requirements: Under wet operating conditions, that is, daily driving, the spray flow of the wiper pump is not less than 820ml/min, that is, 49.2L/h, about 50L/h. This ensures that during daily driving, the wiper pump provides enough water to clean the windshield.
    Rainstorm test requirements: For rainstorm test, the estimated water spray is twice that of wet operation, that is, 100L/h. At the same time, taking into account the safety factor (such as 1.2), the pump requirements for the rainstorm test are: when the head is 2 meters, the estimated flow is 120L/h.
    3. Flow regulation in practical applications
    In order to meet the needs of different use scenarios, modern automotive wiper systems are usually equipped with adjustable water pumps. This means that the driver can meet different water spraying needs by adjusting the flow of the pump according to the actual needs. For example, in heavy rain weather, the flow of the pump can be increased to improve the cleaning effect; In daily driving, the flow can be appropriately reduced to save water resources.

    Iv. Conclusion
    To sum up, the amount of flow required by the car’s wiper pump is a relatively flexible range, which depends on the specific use scenario and the needs of the driver. Under wet operating conditions, the spray flow of the wiper pump is usually not less than 50L/h; In extreme weather conditions such as heavy rain, a larger flow may be required to ensure the cleaning effect. At the same time, modern automotive wiper systems usually have flow adjustment functions to adapt to different use needs.

    Please note that the above information is for reference only, and the specific flow size needs to be determined according to the model, wiper system design and other factors. In actual use, it is recommended to refer to the vehicle instruction manual or consult the car manufacturer for more accurate information.