The automotive vacuum pump system helps the driver brake, making driving safer and effectively avoiding traffic accidents. Vacuum pumps are generally power-assisted. One side continuously pumps air (close to a vacuum, but cannot be an absolute vacuum), and the other side maintains an atmospheric pressure. This creates a negative pressure, which creates a force to suck in, or a force to push. In this way To achieve the purpose of assistance.
The working principle of the automobile vacuum pump:
1. For the vacuum source of the vacuum assist system, vehicles equipped with gasoline engines use ignition type, so they can generate pressure in the intake manifold. A higher vacuum pressure can provide a sufficient vacuum source for the vacuum-assisted braking system. However, for vehicles driven by diesel engines, since the engine uses a compression ignition CI, the same level of vacuum pressure cannot be provided at the intake manifold. Therefore, a vacuum pump that provides a vacuum source needs to be installed.
2. In addition, for the gasoline direct injection engine GDI designed to meet higher emission and environmental protection requirements, the same level of vacuum pressure at the intake manifold cannot be provided to meet the vacuum brake booster system. requirements, therefore a vacuum pump is also needed to provide a vacuum source.