Crankcase ventilation pipe anti-icing device, crankcase and engine
By installing heating jackets on the intake and exhaust pipes of the crankcase ventilation pipe and using engine cooling water for heating, the problem of icing in the ventilation pipe at low temperatures is solved, achieving the effects of preventing blockage and reusing heat.
CN224282760UActive Publication Date: 2026-05-26WEICHAI POWER CO LTD
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Patent Information
- Application Number
- CN202521085152.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2035-05-29
AI Technical Summary
Technical Problem
The intake and exhaust pipes of the crankcase ventilation system are prone to freezing in low-temperature environments, leading to a high risk of blockage.
Method used
A first heating jacket and a second heating jacket are respectively fitted over the intake pipe and the exhaust pipe, and the engine cooling water is used as a heat source to heat the intake pipe and the exhaust pipe, forming a heating chamber to prevent icing.
Benefits of technology
It effectively prevents the air inlet and outlet pipes from freezing in low-temperature environments, reduces the risk of ventilation pipe blockage, realizes the secondary utilization of heat, and avoids water waste.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a crankcase ventilation pipe anti-icing device, a crankcase and an engine, the crankcase ventilation pipe anti-icing device comprises a first heating jacket and a second heating jacket, and the first heating jacket and the second heating jacket are arranged in parallel or in series; one of the first heating sleeve and the second heating sleeve is arranged outside an air inlet pipe of the crankcase ventilation pipe in a sleeving manner, and the other one of the first heating sleeve and the second heating sleeve is arranged outside an air outlet pipe of the crankcase ventilation pipe in a sleeving manner, so that a heating cavity is formed outside the air inlet pipe and the air outlet pipe. Fuel in an engine cylinder combusts to generate a large amount of heat, part of the heat is taken away by engine cooling water, the temperature of the cooling water absorbing the heat is close to 100 DEG C, the cooling water is a high-quality heat source, and the high-quality heat source is supplied into a heating cavity to heat an air inlet pipe and an air outlet pipe of a crankcase ventilation pipe. The purpose of preventing the air inlet pipe and the air outlet pipe from being frozen when the environment temperature reaches zero DEG C or lower than zero DEG C is achieved, and the risk that the crankcase ventilation pipe is blocked is reduced.
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