Intake Manifold

The main function of the excavator intake manifold is to evenly distribute air, fuel-air mixture, or clean air to each cylinder. The intake manifold is located between the throttle body and the engine intake valves, and its design aims to ensure that the combustion conditions in each cylinder are consistent, allowing the engine to perform optimally across various RPM ranges. Specifically, the functions of the intake manifold include:

1. Distributing air: Whether in carbureted or throttle body fuel-injected engines, the intake manifold is responsible for distributing air, fuel-air mixture, or clean air to the intake ports of each cylinder. This ensures that the mixture of fuel and air enters each cylinder uniformly, optimizing combustion efficiency.

2. Buffering air flow: The intake manifold also acts as a buffer for the air flow entering the engine, ensuring that the air enters the cylinders smoothly. This reduces resistance and improves intake efficiency.

3. Adapting to different RPM requirements: The design of the intake manifold takes into account the needs of the engine at different RPMs. For example, longer manifolds are suitable for low-speed operation, while shorter manifolds are better for high-speed operation. Some models use variable-length intake manifolds or continuously variable length intake manifolds to meet performance demands at various RPMs.

4. Material selection: The intake manifold is typically made from aluminum alloy, which not only helps reduce overall weight due to its lightweight properties but also provides a smooth internal surface that effectively reduces resistance and increases intake efficiency.

In summary, the excavator intake manifold ensures the uniform distribution of fuel and air through its design and material selection, improving combustion efficiency and optimizing engine performance.