阅读说明：本技术 一种防止机油乳化的曲轴箱通风加热装置 (Prevent crankcase ventilation heating device of machine oil emulsification ) 是由 王峰 柳国立 韩俊楠 陈瑞平 马文举 李洋 刘鸿德 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种防止机油乳化的曲轴箱通风加热装置,包括通风胶管、电源线及接插头；所述通风胶管由通风管油气分离器端、通风管中间体及通风管空滤端依次连接组成,所述通风管中间体的两端内壁均通过中间接头分别与风管油气分离器端及通风管空滤端连接,所述通风管中间体的内壁螺旋布置有加热材料,加热材料、中间接头电源线及接插头构成串联回路；通过对曲轴箱通风管内壁加热,无需额外增加热流管路,可使混合气温度流经,实现减小混合气与通风管内壁温差效果,不仅能解决曲轴箱通风管与进气管连接位置结冰问题,还能有效解决曲轴箱通风管低温环境凝水回流,引起发动机机油乳化问题,结构简单、通用性强。(The invention discloses a crankcase ventilation heating device for preventing engine oil from emulsifying, which comprises a ventilation rubber tube, a power line and a plug; the ventilation rubber pipe is formed by sequentially connecting a ventilation pipe oil-gas separator end, a ventilation pipe intermediate body and a ventilation pipe air filter end, inner walls of two ends of the ventilation pipe intermediate body are respectively connected with the ventilation pipe oil-gas separator end and the ventilation pipe air filter end through intermediate joints, heating materials are spirally arranged on the inner wall of the ventilation pipe intermediate body, and the heating materials, an intermediate joint power cord and a plug form a series loop; through heating crankcase ventilation pipe inner wall, need not additionally to increase the thermal current pipeline, can make the gas mixture temperature flow through, realize reducing gas mixture and ventilation pipe inner wall difference in temperature effect, can not only solve the freezing problem of crankcase ventilation pipe and intake-tube connection position, can also effectively solve crankcase ventilation pipe low temperature environment condensate and flow back, arouse engine oil emulsification problem, simple structure, commonality are strong.)

1. A crankcase ventilation heating device for preventing engine oil from emulsifying is characterized by comprising a ventilation rubber tube (1), a power cord (3) and a plug (6); the ventilation rubber pipe (1) is formed by connecting a ventilation pipe oil-gas separator end (7), a ventilation pipe intermediate body (8) and a ventilation pipe air filtering end (9) in sequence, the inner walls of the two ends of the ventilation pipe intermediate body (8) are respectively connected with an air pipe oil-gas separator end (7) and a ventilation pipe air filtering end (9) through intermediate joints (2), the inner wall of the ventilation pipe intermediate body (8) is spirally provided with a heating material (5), the heating material (5) is arranged between the two middle joints (2), two ends of the heating material (5) are respectively connected with one end of the power wire (3) through the middle joints (2), the other end of the power line (3) is butted with a wiring harness plug of the engine through a plug (6), the plug (6) is positioned on the outer surface of the end (7) of the oil-gas separator of the ventilation pipe, the heating material (5), the middle joint (2), the power line (3) and the plug (6) form a series circuit; the oil-gas separator end (7) of the ventilation pipe is connected with the oil-gas separator, and the air filtering end (9) of the ventilation pipe is connected with the air filter.

2. The crankcase ventilation heating device for preventing the emulsification of engine oil according to claim 1, wherein the heating material (5) is a heating wire.

3. The crankcase ventilation heating device for preventing the emulsification of engine oil according to claim 1, wherein the outer wall of the intermediate joint (2) is provided with a barb-type anti-run-out structure for preventing the rubber tube from running out.

4. The crankcase ventilation heater for preventing oil emulsification as claimed in claim 1, wherein the power cord (3) is externally wrapped with a bellows (4) for insulation and wear prevention.

5. The crankcase ventilation heating device for preventing engine oil from emulsifying of claim 1, wherein the outer surface of the connecting position of the ventilation pipe intermediate body (8) and the oil-gas separator end (7) and the ventilation pipe air filter end (9) is provided with an opening sleeve skin (10).

Technical Field

The invention relates to an engine structure, in particular to a crankcase ventilation heating device for preventing engine oil from emulsifying.

Background

The requirements of automobile emission regulations are increasingly strict, and engines generally adopt a closed crankcase ventilation system, so that mixed gas consisting of unburned fuel gas, water vapor, waste gas and the like in a crankcase is guided to an air inlet pipe through a connecting pipe and returns to a cylinder for re-combustion. However, in cold environments in winter, when high-temperature mixed gas of a crankcase flows through the low-temperature ventilation pipe, water vapor in the mixed gas is condensed into water and flows into an oil pan along the ventilation pipe, so that engine oil is emulsified, and when the temperature is lower, the condensed water is condensed into ice to block the ventilation pipe of the crankcase, so that serious faults of the engine are caused.

There are two main common solutions to the above problems: firstly, a heating water pipe is arranged beside a crankcase ventilation pipe, and engine cooling liquid is used for indirectly heating the crankcase ventilation pipe; and secondly, a heating transition joint is arranged at the connecting position of the crankcase ventilation pipe and the air inlet pipe. The scheme of the water heating pipe is limited by the space of the whole vehicle, and additional water pipes cannot be arranged on part of the vehicles; the heating water pipe shunts the engine coolant to influence the heat dissipation of the engine; in addition, when the engine coolant is cold started at low temperature, a certain temperature rise process exists, and the problem of water condensation of a crankcase ventilation pipe exists in the period of time. The heating transition joint scheme can only solve the problem that the condensate water of the mixed gas is frozen after flowing through the ventilation pipe of the crankcase, the problem of the condensate water in the process of flowing through the ventilation pipe can not be solved, and the risk of engine oil emulsification still exists.

Disclosure of Invention

Aiming at the defects of the axle box ventilation heating device in the prior art, the invention provides the crankcase ventilation heating device for preventing engine oil from emulsifying.

The invention is realized by the following technical scheme:

a crankcase ventilation heating device for preventing engine oil from emulsifying comprises a ventilation rubber tube 1, a power cord 3 and a plug 6; the ventilation rubber tube 1 is formed by sequentially connecting a ventilation tube oil-gas separator end 7, a ventilation tube intermediate body 8 and a ventilation tube air filtering end 9, inner walls of two ends of the ventilation tube intermediate body 8 are respectively connected with the ventilation tube oil-gas separator end 7 and the ventilation tube air filtering end 9 through intermediate joints 2, a heating material 5 is spirally arranged on the inner wall of the ventilation tube intermediate body 8, the heating material 5 is arranged between the two intermediate joints 2, two ends of the heating material 5 are respectively connected with one end of a power cord 3 through the intermediate joints 2, the other end of the power cord 3 is in butt joint with a wiring harness plug of an engine through a plug 6, the plug 6 is positioned on the outer surface of the ventilation tube oil-gas separator end 7, and the heating material 5, the intermediate joints 2, the power cord 3 and the; the ventilation pipe oil-gas separator end 7 is connected with the oil-gas separator, and the ventilation pipe air filtering end 9 is connected with the air filter.

Further, the heating material 5 is a heating wire.

Further, the outer wall of the intermediate joint 2 is provided with a barb anti-falling structure for preventing the rubber tube from falling out.

Further, the power line 3 is externally wrapped by a corrugated pipe 4 for insulation and abrasion prevention.

Furthermore, opening sleeve skins 10 are arranged on the outer surfaces of the connecting positions of the ventilation pipe intermediate body 8, the oil-gas separator end 7 and the ventilation pipe air filtering end 9.

Compared with the prior art, the invention has the following advantages:

according to the crankcase ventilation heating device for preventing engine oil emulsification, the heating material is arranged in the crankcase ventilation rubber tube, the inner wall of the crankcase ventilation tube is heated in a low-temperature cold environment, the temperature difference between high-temperature mixed gas exhaled from an engine and the inner wall of the crankcase ventilation tube is reduced, the problem that the connecting position of the crankcase ventilation tube and the air inlet tube is frozen can be solved, the problem of engine oil emulsification of the engine due to condensate backflow in the low-temperature environment of the crankcase ventilation tube can be effectively solved, meanwhile, heat flow is introduced without additionally occupying space to arrange a pipeline, the structure is simple, and the universality is strong.

Drawings

FIG. 1 is a partial cross-sectional view of a crankcase ventilation heating arrangement of the present invention;

FIG. 2 is a schematic view of the crankcase ventilation heating arrangement of the present invention;

in the figure: the ventilation pipe comprises a ventilation rubber pipe 1, an intermediate joint 2, a power line 3, a corrugated pipe 4, a heating material 5, a plug 6, a ventilation pipe oil-gas separator end 7, a ventilation pipe intermediate body 8, a ventilation pipe air filter end 9 and an opening sleeve skin 10.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.