Intake and exhaust system of V-shaped compact high-pressure-ratio diesel engine

By adopting a symmetrical arrangement and a double balanced pipeline design in the diesel engine intake and exhaust system, the structural changes and component space compression problems caused by the increase in the diameter of the intake pipe in the prior art are solved, and a high-pressure ratio and efficient intake and exhaust system are achieved.

CN119664548APending Publication Date: 2025-03-21HEBEI HUABEI DIESEL ENGINE
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Patent Information

Application Number
CN202411688612.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

When the prior art increases the intake pressure ratio of diesel engines, it is necessary to increase the diameter of the intake pipe, resulting in changes in the diesel engine structure and space compression of other parts, which is not conducive to the overall layout.

Method used

A V-shaped compact high-pressure diesel engine intake and exhaust system is designed. By designing the structural design of various components of the intake and exhaust system, the entire machine structure is made more compact, including two sets of two-stage superchargers arranged symmetrically from left and right mirrors, intake and exhaust manifolds, balance pipes and communication pipes, and adopts a symmetrical circulation arrangement and a double balance pipeline scheme to reduce the volume of the machine.

Benefits of technology

It is achieved to improve the intake and exhaust efficiency of the diesel engine without changing the structure of the diesel engine, reduce pump air loss, and improve the compactness and efficiency of the overall structure.

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Abstract

The invention discloses a V-shaped compact high-pressure-ratio diesel engine air inlet and exhaust system, and belongs to the technical field of diesel engine air inlet and exhaust. The V-shaped compact high-pressure-ratio diesel engine air inlet and exhaust system comprises an air inlet structure, and the air inlet structure comprises two sets of two-stage superchargers which are arranged in a left-right mirror symmetry mode and communicate with an intercooler for air inlet; the air inlet structure further comprises two air inlet communicating pipes which are arranged in a mirror image mode and correspond to the two sets of two-stage superchargers in a one-to-one mode, each air inlet communicating pipe is communicated with an air inlet manifold, the cross section of a flow channel of each air inlet manifold is designed in a flat type triangle mode, and the two air inlet manifolds are arranged in a mirror image mode and connected through an air inlet balance pipe. Exhaust structures in one-to-one correspondence with the two groups of two-stage superchargers are arranged on two sides of two intake manifolds of the intake structure in a mirroring manner, each group of exhaust structures comprises an exhaust pulse seat communicated with the corresponding two-stage supercharger, and the exhaust pulse seat is communicated with an exhaust manifold connected to an exhaust passage of the cylinder cover through an exhaust connecting pipe. The structure is more compact, the air channel is shorter, the trend is more reasonable, and the efficiency is higher.
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