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What is the function of the vacuum tube in the Audi 2.5 water pump?

1 Answers

DeClara

07/30/25 10:26am

The function of the vacuum tube in the Audi 2.5 water pump is to provide vacuum pressure to ensure water pressure. Generally, there are two types of vacuum tubes in a car: One is used for the brake booster pump, and the other is used for the distributor ignition advance device. The purpose of the vacuum tube is to provide vacuum pressure to one side of the working pump diaphragm: The other side is connected to the atmosphere. The pump diaphragm moves the push rod forward under atmospheric pressure, thereby providing assistance. The vacuum tube is a component that connects the brake vacuum pump and the engine intake manifold. When the engine is running, the vacuum tube transmits the negative pressure from the intake manifold to the vacuum pump. One side of the diaphragm in the vacuum pump is connected to the brake master cylinder, and the other side is connected to the brake pedal.

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