阅读说明：本技术 一种pcv系统及其安装方法、车辆 (PCV system, installation method thereof and vehicle ) 是由 卜令山 柯复礼 卡罗琳·沃塞勒 彭智君 姚亮 李佳莉 关立谱 于 2019-10-30 设计创作，主要内容包括：本发明提供一种PCV系统及其安装方法、车辆。该PCV系统包括油气分离器；曲轴箱通风管,其包括卡环,并且所述曲轴箱通风管的一端通过所述卡环固定在所述油气分离器的接头上；装饰罩盖,通过所述卡环与所述曲轴箱通风管连接。该PCV系统可以使曲轴箱通风管和油气分离器的连接实现固定连接,本发明提供的卡环还具有结构牢固、使用寿命长,在工艺上易于实现的优点。(The invention provides a PCV system, a mounting method thereof and a vehicle. The PCV system comprises an oil-gas separator; the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and the decorative cover cap is connected with the crankcase ventilation pipe through the clamping ring. The PCV system can realize the fixed connection of the crankcase ventilation pipe and the oil-gas separator, and the clamping ring provided by the invention also has the advantages of firm structure, long service life and easiness in realization of the process.)

1. A PCV system, characterized by comprising:

an oil-gas separator;

the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and

and the decorative cover cap is connected with the crankcase ventilation pipe through the clamping ring.

2. The PCV system according to claim 1, wherein: the crankcase ventilation tube has markings on an outer surface thereof for locating the snap ring.

3. The PCV system according to claim 1, wherein: the decorative cover cap comprises a decorative cover cap supporting clamping foot which is formed by vertically and downwards protruding the inner side surface of the decorative cover cap.

4. The PCV system according to claim 3, wherein: the shape of the decorative cover cap supporting clamping foot corresponds to that of the clamping ring.

5. The PCV system according to claim 4, wherein: the snap ring with decorate the shroud and support the laminating of bayonet catch and be connected, in order to support decorate the shroud.

6. The PCV system according to claim 5, wherein: the snap ring is arranged in a closed ring shape.

7. The PCV system according to claim 6, wherein: the diameter of the clamping ring before assembly is larger than that of the joint of the crankcase ventilation pipe and the oil-gas separator.

8. A method of installing a PCV system, the method comprising:

mounting a snap ring on a crankcase ventilation duct;

a joint connecting one end of the crankcase ventilation pipe to an oil-gas separator;

positioning the snap ring according to indicia on the crankcase ventilation tube; and is

Compressing the snap ring.

9. A vehicle, characterized in that: comprising a PCV system according to any one of claims 1 to 7.

Technical Field

The invention relates to the field of automobile engine crankcases, in particular to a PCV system, an installation method thereof and a vehicle, and specifically relates to a PCV system which meets the national six standards, an installation method thereof and a vehicle.

Background

At present, with the introduction of the motor vehicle pollutant emission standard (hereinafter referred to as "national six"), part of the structure of a Positive Crankcase Ventilation System (PCV) of a vehicle cannot meet the requirements of the new national six standard.

According to the sixth national standard, for a system using a hard pipe for connecting the PCV valve and the crankcase, the manufacturer may apply for not detecting the connection between the crankcase and the PCV valve, but must satisfy the following conditions: the connection is resistant to degradation or accidental disconnection; disconnecting the PCV valve from the crankcase is significantly more difficult than disconnecting the PCV valve from the intake manifold; the maintenance of the non-PCV system in the production enterprise maintenance program does not involve disconnection.

Therefore, according to the national six standard, when the external component is disconnected from the PCV valve, the problem must be detected, but the current national six standard allows the fixed connection to be free from monitoring. In order to comply with this specification, the fixed connection must comply with the following conditions: the disconnection cannot be done for any maintenance needs; the connection cannot be disconnected by using a common hand tool. There is also a need to consider the resistance of the connection to external damage and the durability of the connection when someone attempts to disconnect it. Furthermore, some technicians may still disconnect the connection without monitoring, as the resistance to the connection does not set a minimum tolerance criterion.

Therefore, one end of a crankcase ventilation pipe of the PCV system is required to be fixed, and one end of the crankcase ventilation pipe which is fixedly connected is connected with the oil-gas separator; the other end of the crankcase ventilation duct must be monitorable and the other end is connected to the intake duct.

In the prior art, a crankcase ventilation pipe of a PCV system is directly arranged on a joint of an oil-gas separator, the crankcase ventilation pipe and the oil-gas separator are directly connected, and the assembly mode is detachable and does not meet the national six standards.

Therefore, in order to meet the above requirements, it is necessary to provide a PCV system, and the connection between the crankcase ventilation pipe and the air-oil separator of the PCV system needs to be non-detachable.

Disclosure of Invention

Technical problem to be solved

The first object of the present invention is: the PCV system meets the national six standards so as to solve the technical problem that the crankcase ventilation pipe and the oil-gas separator of the PCV system in the prior art can be detachably assembled.

The second object of the present invention is: the vehicle comprises a PCV system which conforms to the national six standards, so as to solve the technical problem that the crankcase ventilation pipe and the oil-gas separator of the PCV system in the prior art are detachably assembled.

(II) technical scheme

In order to solve the above technical problem, the present invention provides a PCV system including an oil separator; the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and the decorative cover is connected with the crankcase ventilation pipe through a clamping ring.

Optionally, the outer surface of the crankcase ventilation tube has markings for locating the snap ring.

Optionally, the trim cover includes trim cover support catches formed by vertically downwardly projecting inner side surfaces of the trim cover.

Optionally, the shape of the trim cover support clip leg corresponds to the shape of the clip ring.

Optionally, the clamping ring is attached to the decorative cover supporting clamping foot to support the decorative cover.

Optionally, the snap ring is provided in a closed loop shape.

Optionally, the diameter of the snap ring before assembly is larger than the diameter of the joint between the crankcase ventilation duct and the gas-oil separator.

In yet another aspect of the present invention, a method of installing a PCV system comprises installing a snap ring on a crankcase ventilation tube; a joint connecting one end of the crankcase ventilation pipe to the gas-oil separator; positioning the snap ring according to indicia on the crankcase ventilation tube; and compresses the snap ring.

The invention also provides a vehicle comprising a PCV system according to the invention, which complies with the national six standards.

(III) advantageous effects

The invention provides a PCV system, which comprises an oil-gas separator; the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and the decorative cover cap is connected with the crankcase ventilation pipe through the clamping ring. The clamping ring provided by the invention also has the advantages of firm structure, long service life and easiness in realization of the process.

Drawings

The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic illustration of a crankcase ventilation duct connection in an oil separator according to an embodiment of the invention;

FIG. 2 is a schematic illustration of a crankcase ventilation duct in connection with a trim cover according to an embodiment of the invention;

FIG. 3 is a schematic view of a snap ring according to an embodiment of the present invention.

In the figure: 1: a crankcase ventilation duct; 2: an oil-water separator; 3: a snap ring; 4: a decorative cover; 5: the decorative cover supports the clip legs.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In one aspect, as shown in FIGS. 1-3, the present disclosure provides a PCV system comprising an oil-gas separator; the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and the decorative cover cap is connected with the crankcase ventilation pipe through a clamping ring.

In the embodiment, the PCV system according to the sixth national standard provided by the invention comprises a crankcase ventilation pipe 1, wherein the crankcase ventilation pipe 1 is sleeved on a joint of an oil-gas separator 2, and one end of the crankcase ventilation pipe 1 is in interference fit with the joint of the oil-gas separator 2. Specifically, the embodiment of the invention provides a clamping ring 3 which is used for fixing and clamping the joint of the crankcase ventilation pipe 1 and the oil-gas separator 2 and ensuring the fixed connection between the crankcase ventilation pipe 1 and the oil-gas separator 2.

Further, before assembly, the snap ring 3, the gas-oil separator 2, and the crankcase ventilation pipe 1 are separated from each other. The crankcase ventilation tube 1 of the present embodiment has markings on its outer surface for the positioning of the snap ring 3. Specifically, firstly, a clamping ring 3 is installed on a crankcase ventilation pipe 1, then the crankcase ventilation pipe 1 provided with the clamping ring 3 is connected to a joint of an oil-gas separator 2, the position of the clamping ring 3 is adjusted to a marked position, the clamping ring 3 is positioned, and finally the clamping ring 3 positioned at the joint of the crankcase ventilation pipe 1 and the oil-gas separator 2 is pressed tightly through a special tool such as a caliper and the like, so that the oil-gas separator 2, the crankcase ventilation pipe 1 and the clamping ring 3 form a non-detachable assembly.

In addition, as shown in fig. 2, the non-detachable assembly of the present embodiment formed by the gas-oil separator 2, the crankcase ventilation pipe 1 and the snap ring 3 is connected to the trim cover 4. The trim cover 4 includes trim cover support catches 5 that are formed to protrude in a vertical direction from the inner side surface of the trim cover 4 and correspond to the shape of the snap ring. The snap ring 3 mounted on the crankcase ventilation pipe 1 is connected with the decorative cover support catch 5 of the decorative cover 4, and the snap ring 3 functions to support the decorative cover 4 by this connection. The decorative cover 4 covers the non-detachable assembly formed by the oil-gas separator 2, the crankcase ventilation pipe 1 and the clamping ring 3 while being supported by the clamping ring 3, so as to prevent the crankcase ventilation pipe 2 from being worn.

As shown in fig. 3, the snap ring 3 according to the embodiment of the present invention is in a closed ring shape without an opening, the diameter of the snap ring 3 before being assembled to the crankcase ventilation pipe 1 is larger than the diameter of the joint of the crankcase ventilation pipe 1 and the oil-water separator 2, and after the snap ring 3 is moved to the mark of the crankcase ventilation pipe 1, the snap ring 3 is assembled by using a special tool, even if the whole snap ring 3 is contracted toward the center of the snap ring 3 according to the diameter direction thereof, thereby fastening the joint, and realizing the fixed connection of the crankcase ventilation pipe 1 and the oil-water separator 2. The snap ring 3 cannot be removed separately unless the crankcase ventilation duct 1 is forcibly broken by a tool. When the snap ring 3 is fitted to the crankcase ventilation duct 1, a special tool such as a caliper is used. The use of a typical split clamping ring makes the connection between the crankcase ventilation duct 1 and the gas-oil separator 2 detachable and, since a typical split clamping ring is commonly used for connecting detachable parts, makes the operator think that the connection is detachable; and the glue is used for connecting the crankcase ventilation pipe and the oil-gas separator, so that the effect that the connection of the crankcase ventilation pipe and the oil-gas separator is kept undetachable in the whole service life of the engine cannot be guaranteed due to the thermal aging effect. The snap ring of the embodiment of the invention has firm structure and long service life, and is easy to realize in process.

In another aspect, the present disclosure also provides a vehicle including a PCV system according to an embodiment of the present disclosure.

In summary, the present invention provides a PCV system including an oil separator; the crankcase ventilation pipe comprises a clamping ring, and one end of the crankcase ventilation pipe is fixed on a joint of the oil-gas separator through the clamping ring; and the decorative cover cap is connected with the crankcase ventilation pipe through the clamping ring. Through the structure, the crankcase ventilation pipe and the oil-gas separator can be fixedly connected, and the clamping ring provided by the invention has the advantages of firm structure, long service life and easiness in realization of the process.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.