Engine exhaust pipe assembly and engine with same
By incorporating a water-proof pipe and a drainage hole inside the exhaust pipe, the problem of rainwater backflow is solved, ensuring the waterproofness of the engine aftertreatment system, preventing equipment damage and malfunction, and guaranteeing the normal operation and lifespan of the engine.
CN224432646UActive Publication Date: 2026-06-30ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202521677325.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2035-08-07
AI Technical Summary
Technical Problem
In the existing technology, the exhaust tailpipe structure lacks a rainproof design, which makes it easy for rainwater to enter the engine after-treatment system, damaging the equipment and causing starting failure.
Method used
The system uses a water-proof pipe and an exhaust pipe to form a ring-shaped drainage groove. Combined with the drainage hole design, rainwater is intercepted and discharged in a directional manner when it flows in along the pipe wall, completely blocking the path of rainwater into the post-processor.
Benefits of technology
It effectively prevents rainwater from entering the aftertreatment system, avoiding equipment damage and malfunctions, ensuring normal engine operation and extending its lifespan.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides an engine exhaust pipe assembly. The engine exhaust pipe assembly comprises an exhaust pipe communicated with a postprocessor of an engine to receive tail gas of the engine and a marine riser arranged in the exhaust pipe in a sleeved mode. The marine riser comprises a cylindrical main pipe body and a connecting ring arranged outside the main pipe body in a protruding mode, the connecting ring is fixedly connected with the inner wall of the exhaust pipe, the outer diameter of the main pipe body is smaller than the inner diameter of the exhaust pipe, and an annular drainage groove is jointly defined by the outer wall of the main pipe body, the inner wall of the exhaust pipe and the connecting ring. The exhaust pipe is further provided with a drainage hole enabling the drainage groove to be communicated with the outside, and the connecting ring is arranged below the drainage hole. The annular drainage groove formed by the marine riser and the inner wall of the exhaust pipe is combined with the drainage hole located above the connecting ring, so that rainwater is intercepted and directionally drained when flowing in along the pipe wall, the path of the rainwater entering the postprocessor is thoroughly blocked, and the problem that the rainwater flows backwards in a traditional exhaust pipe is solved.
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