Exhaust Manifold Assembly

The main function of the excavator exhaust manifold assembly is to reduce exhaust resistance and prevent interference between cylinders.

The excavator exhaust manifold assembly, also known as the exhaust header, is a component that connects the various cylinders. Its role is to collect and guide the exhaust gases from each cylinder to the exhaust pipe, aiming to reduce exhaust resistance and ensure efficient engine operation. When exhaust gases accumulate excessively, interference between cylinders can occur. This interference happens when the exhaust from one cylinder encounters the exhaust gases not completely expelled from another cylinder, increasing exhaust resistance and reducing the engine’s output power.

To address this issue, the design of the exhaust manifold uses a separate branch for each cylinder or a shared branch for two cylinders, with each branch being elongated and independently formed as much as possible. This design minimizes the interaction of gases in different pipes, thereby reducing exhaust resistance to the maximum extent, preventing interference between cylinders, and ensuring the stable and efficient operation of the engine.

Furthermore, the design of the exhaust manifold also considers reducing noise and meeting environmental requirements. The interior of the exhaust pipe typically includes sound reduction systems such as mufflers to further decrease noise levels. Additionally, the design of the exhaust pipe needs to comply with emission standards to ensure environmental compliance.