CN215761855U - Crankcase ventilation pipe heating device and vehicle - Google Patents

Abstract

The utility model provides a crankcase ventilation pipe heating device and a vehicle, wherein the crankcase ventilation pipe heating device comprises a crankcase ventilation pipe, an engine water outlet pipe, a heating element arranged in the crankcase ventilation pipe, and a heat conduction metal element connected between the heating element and the engine water outlet pipe; the heat conduction metal piece is used for conducting heat emitted by the engine water outlet pipe to the heating piece, and the heating piece is used for heating the ice blocks condensed in the crankcase ventilation pipe. The heat conduction metal piece is used for conducting the heat emitted by the water outlet pipe of the engine to the heating element in the crankcase ventilation pipe, so that the icing in the crankcase ventilation pipe can be reduced or prevented under the condition of not additionally consuming energy, the heat can be concentrated to melt ice blocks in the crankcase ventilation pipe, and the blockage of the crankcase ventilation pipe can be further prevented.

Description

Crankcase ventilation pipe heating device and vehicle

Technical Field

The utility model relates to the technical field of crankcase ventilation, in particular to a crankcase ventilation pipe heating device and a vehicle.

Background

The crankcase is a part for mounting a crankshaft at the lower part of a cylinder block of a gas engine or a gasoline engine and stores lubricating oil of organisms. In order to avoid the over-high pressure of the crankcase, the crankcase needs to be ventilated with the outside, but due to the temperature difference of the internal gas and the external gas, the junction of cold gas and hot gas in the crankcase ventilation pipe is easy to freeze in a cold environment, so that the crankcase ventilation pipe is blocked.

In order to prevent the crankcase ventilation pipe from being blocked, the related technology provides a mode of heating the pipeline by using an electric heating device, so that gas in the crankcase ventilation pipe is heated, the crankcase ventilation pipe is prevented from being frozen, and ice blocks can be melted after the crankcase ventilation pipe is frozen. However, the related art needs to add an electric heating device, which not only has high cost, but also consumes energy of the vehicle when the vehicle runs, and the electric heating device also increases the load of the vehicle and occupies the design space inside the vehicle body. In addition, the pipeline is heated in a manner that solid ice cubes which are not completely melted can slide along the ventilation pipe of the crankcase and the air inlet manifold into other devices of the power system after being separated from the pipeline, and the other devices are damaged.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a crankcase ventilation pipe heating device and a vehicle, and aims to solve the problem that a crankcase ventilation pipe heating scheme in the related art is high in cost.

In order to solve the problems, the embodiment of the utility model discloses a crankcase ventilation pipe heating device, which comprises a crankcase ventilation pipe, an engine water outlet pipe, a heating element arranged in the crankcase ventilation pipe, and a heat conduction metal element connected between the heating element and the engine water outlet pipe;

the heat conduction metal piece is used for conducting heat emitted by the engine water outlet pipe to the heating piece, and the heating piece is used for heating the ice blocks condensed in the crankcase ventilation pipe.

Optionally, the device further comprises a heat absorbing member immersed in the engine coolant in the engine water outlet pipe, and the heat absorbing member is connected with the heat-conducting metal member.

Optionally, an insulating layer is further disposed around the heat-conducting metal member.

Optionally, the length of the heat conducting metal member is no greater than the diameter of the crankcase ventilation tube.

Optionally, the distance between the heating element and the position where the crankcase ventilation pipe is connected with the intake manifold is not more than 3 times the diameter of the crankcase ventilation pipe.

Optionally, the heating element is a metal screen.

Optionally, the device further comprises a secondary heating element mounted in an intake manifold connected to one end of the supercharger; wherein, the secondary heating element is a metal filter screen.

Optionally, the heating member is a metal screen, and the screen mesh of the secondary heating member is smaller than the screen mesh of the heating member.

Optionally, the total air-passing area of the meshes of the secondary heating element is different from the total air-passing area of the meshes of the heating element.

Embodiments of the present invention provide a vehicle comprising a crankcase ventilation duct heating arrangement as described in any one of the above embodiments.

The embodiment of the utility model has the following advantages:

(1) the heat conduction that utilizes heat-conduction metalwork to give off the engine outlet pipe is to the heating member in the crankcase ventilation pipe, under the condition that does not consume the extra energy, preheats by the gas of heating member in to the crankcase ventilation pipe, can reduce or prevent that the crankcase ventilation pipe from freezing.

(2) The heating member can be arranged at an easy-to-freeze position in the crankcase ventilation pipe, and can utilize the heat of an engine cooling system after the vehicle is started for a period of time, so that ice blocks in the crankcase ventilation pipe are melted by concentrated force, and the crankcase ventilation pipe is prevented from being blocked.

(3) The heating element is arranged in the crankcase ventilation pipe, which is equivalent to increase a barrier in the crankcase ventilation pipe, so that ice cubes melted in the crankcase ventilation pipe can be prevented from falling into other devices such as a supercharger in a power system along a pipeline, and damage to other hardware devices is avoided.

(4) Because the heat conduction metal part takes away part of heat in the water outlet pipe of the engine, the cooling of a cooling system of the engine is accelerated, and the heat conduction metal part has the function of assisting in accelerating and reducing the temperature of the engine under the high-temperature working condition of the engine.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a crankcase ventilation duct heating apparatus according to an embodiment of the present invention in FIG. 1;

FIG. 2 is a schematic illustration of crankcase ventilation duct flow intersection provided by an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a metal mesh heating element according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a mesh-shaped heating element according to an embodiment of the present invention.

Reference numerals:

the heat-absorbing device comprises an engine 1, an engine 2, an engine water outlet pipe, a crankcase ventilation pipe 3, an air inlet manifold 4, a supercharger 5, a heat absorbing part 6, a heating part 7, a heat conducting metal part 8, a heat insulating layer 9, a secondary heating part 10, an engine coolant 11, an exhaust gas 12, an external air 13 and an air flow 14 intersecting region.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The crankcase is a cavity structure that houses the crankshaft of the vehicle engine, often located in the lower portion of the engine. The crankshaft is a shaft with a crank shaft, and rotates around the shaft center when the engine operates. The crankshaft is connected with a connecting rod, and the reciprocating motion of the piston is converted into the rotation of the crankshaft through the action of the connecting rod, so that the vehicle is driven. The crankcase is required to take up the force transmitted from the connecting rod and convert the force into torque to be output through the crankshaft and drive other accessories on the engine to work. Because the engine body is closed, when the piston moves upwards, the space in the engine body is increased to supplement external air; when the piston moves downwards, the space in the engine body becomes smaller, and gas is discharged outwards.

During the movement of the engine piston, the crankcase is filled with exhaust gas generated by the engine combustion, the crankcase stores lubricating oil of organisms, and if the exhaust gas with high pressure exists, the lubricating oil is deteriorated, and oil leaks from sealing parts. Therefore, the crankcase ventilation pipe is needed to ventilate the crankcase, the pressure of the crankcase is prevented from being too high, the pressure balance in the crankcase is further ensured, the service life of engine oil is prolonged, the abrasion and the corrosion of parts are reduced, and the oil leakage of an engine is prevented. The crankcase ventilation pipe is utilized to ventilate the crankcase, and the problems of difficult movement of the piston and difficult parking can be effectively solved.

However, the exhaust gas from the crankcase ventilation duct pollutes the environment, so that the gas from the crankcase ventilation duct cannot be directly discharged to the atmosphere, but is connected to the intake manifold of the engine intake system, and enters the combustion chambers of the engine cylinders together with the gas discharged from the air cleaner from the intake manifold to be combusted again.

The present crankcase ventilation pipe is mostly a rubber pipeline, in winter in cold areas, the exhaust normal temperature gas that has a higher temperature of crankcase contacts with the external cold air of inhaling in the crankcase ventilation pipe, the phenomenon of condensing takes place easily, freezes in crankcase ventilation pipe passageway, blocks up the pipeline, directly leads to engine crankcase pressure too big, causes the oil blanket oil leak or the oil dipstick oil spout, makes a series of problems such as machine oil rotten.

In the background art mentioned above, in order to prevent the crankcase ventilation duct from being blocked, the related art method of heating the duct by using the electric heating device has many disadvantages, including high energy consumption, high cost, etc. In an exemplary power system device, an air filter needs to be connected to a supercharger to better discharge outside air into an engine through an intake manifold, and a pipeline is heated by using an electric heating device, so that solid ice cubes which are not completely melted may slide along with airflow into the intake manifold after being separated from a ventilation pipeline of a crankcase, and then slide along the intake manifold into the supercharger, in this case, blades running at high speed in the supercharger are extremely easily damaged, and the whole power system is abnormal.

Therefore, the embodiment of the utility model provides a crankcase ventilation pipe heating device and a vehicle, heat emitted by an engine water outlet pipe is conducted to a heating element in a crankcase ventilation pipe through a heat conduction metal piece connected between the heating element and the engine water outlet pipe, and gas in the crankcase ventilation pipe is preheated by the heating element under the condition of not consuming extra energy, so that the icing of the crankcase ventilation pipe can be reduced or prevented, ice blocks in the crankcase ventilation pipe can be melted by concentrated force, and the blockage of the crankcase ventilation pipe can be further prevented. And because the heating element is used as a barrier in the crankcase ventilation pipe, the ice blocks melted in the crankcase ventilation pipe can be prevented from falling into other devices such as a supercharger in a power system along the pipeline, and the damage to other hardware devices is avoided.

The embodiments of the present invention will be described with reference to the drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a crankcase ventilation duct heating apparatus according to an embodiment of the present invention. As shown in fig. 1, the device comprises a crankcase ventilation pipe 3, an engine water outlet pipe 2, a heating element 7 arranged in the crankcase ventilation pipe, and a heat-conducting metal piece 8 connected between the heating element 7 and the engine water outlet pipe 2;

wherein, the heat conduction metal piece 8 is used for conducting the heat emitted by the engine water outlet pipe 2 to the heating piece 7, and the heating piece 7 is used for heating the ice blocks condensed in the crankcase ventilation pipe 3.

As shown in fig. 1, the crankcase ventilation duct 3 is connected to a crankcase of the engine 1 to ventilate the crankcase. The water outlet pipe 2 of the engine is a water outlet pipe of an engine cooling system. The engine cooling system may be a water-cooled circulation system and the engine coolant may be liquid water. The engine coolant which just cools the engine circulates in the engine water outlet pipe 2 and is often high in temperature, and under the high-temperature working condition of the engine, the temperature of the engine coolant can reach 80-90 ℃.

Specifically, the crankcase ventilation pipe 3 can be a flexible pipe, and the engine water outlet pipe 2 can also be a flexible pipe, so that the arrangement of the crankcase ventilation pipe 3 and the engine water outlet pipe 2 is facilitated, and the arrangement of the heating element 7 and the heat conduction metal element 8 is facilitated. By way of example, the crankcase ventilation duct 3 and the engine outlet duct 2 may both be flexible rubber hoses. Wherein, heating member 7 is seted up the via hole that supplies the circulation of air.

In the present embodiment, the engine 1 may be a gas engine or a gasoline engine. Under the condition that the engine runs, the cooling system is required to cool the engine, so that the engine can run in a reasonable temperature range, the matching relation among all parts of the engine is ensured to be good, the abrasion of parts is reduced, and the running efficiency of the engine is improved.

Through this embodiment, utilize heat conduction metal spare 8 to conduct the heating member 7 in crankcase ventilation pipe 3 with the heat that engine outlet pipe 2 gived off, not only make full use of current heat source, can reduce or prevent the inside ice that freezes of crankcase ventilation pipe under the condition of not additionally consuming the energy, can also concentrate strength to melt the ice-cube in the crankcase ventilation pipe, further prevent that the crankcase ventilation pipe from blockking up. And because the heating element is installed in the crankcase ventilation pipe, namely a barrier is added in the crankcase ventilation pipe, the ice cubes melted in the crankcase ventilation pipe can be prevented from falling into other devices such as a supercharger in a power system along the pipeline, and damage to other hardware devices is avoided. Moreover, because the heat conduction metal part takes away part of heat in the water outlet pipe of the engine, the cooling of a cooling system of the engine is accelerated, and the heat conduction metal part has the function of assisting in accelerating and reducing the temperature of the engine under the high-temperature working condition of the engine.

As shown in fig. 1, the crankcase ventilation pipe 3 and the engine outlet pipe 2 can be arranged in parallel, so that the minimum distance between the outer pipe wall of the crankcase ventilation pipe 3 and the outer pipe wall of the engine outlet pipe 2 at the position where the heating element 7 and the heat conduction metal element 8 are arranged is close enough to reduce the length of the heat conduction metal element 8, thereby improving the heat conduction efficiency and reducing the heat loss.

To this end, in an alternative embodiment, the length of the heat conducting metal piece 8 may be no greater than the diameter of the crankcase ventilation duct 3. For example, the length of the heat-conducting metal piece 8 may be set to half the diameter of the crankcase ventilation duct 3, i.e. equal to the radius of the crankcase ventilation duct 3.

The heat conducting metal member 8 is located between the heating member 7 and the outer side of the pipe wall of the engine outlet pipe 2, and causes high heat loss when exposed to air for a long time. In order to further reduce the heat loss caused by the exposure of the heat conducting metal member 8 to air, in an alternative embodiment, an insulating layer 9 is further provided around the heat conducting metal member 8.

Specifically, the heat-insulating layer 9 is wrapped around the heat-conducting metal member 8, so that the heat-conducting metal member 8 is not in contact with the outside air, thereby reducing heat loss as much as possible.

Considering that the heat of the engine water outlet pipe 2 is actually concentrated in the engine coolant in the engine water outlet pipe 2, the heat conducting metal member 8 obtains the heat from the engine water outlet pipe 2, and actually obtains the heat from the engine coolant, if the heat absorbing device on the inner pipe wall or the outer pipe wall of the engine water outlet pipe 2 is utilized to transfer heat to the heat conducting metal member 8, the heat conduction efficiency may be low. In order to further increase the heat transfer efficiency, in an alternative embodiment, the crankcase ventilation duct heating device further comprises: and a heat absorbing member 6 immersed in engine coolant in the engine water outlet pipe 2, wherein the heat absorbing member 6 is connected with the heat conductive metal member 8.

Soak the heat absorbing member 6 of engine coolant liquid in engine outlet pipe 2, can directly obtain the heat that the engine coolant liquid carried, compare in the heat that the engine coolant liquid carried that obtains from the pipe wall of engine outlet pipe 2, further improved the heat conduction efficiency of heat acquisition end, can provide more stable heat for heat-conduction metalwork 8, heat-conduction metalwork 8 provides heating member 6 with these heats again, and then improved heating power and the heating stability of heating member 6.

Referring to fig. 2, fig. 2 is a schematic diagram of crankcase ventilation duct airflow intersection according to an embodiment of the utility model. As shown in fig. 2, exhaust gas 12 from the crankcase ventilation duct 3 meets the outside air 13 from the intake manifold 4, which is introduced from the supercharger 5, in an airflow meeting area 14. In the case where the temperature of the exhaust gas 12 is not high and the temperature of the outside air 13 is low, for example, in the case where the temperature in winter in a cold region is only minus 20 degrees celsius, the exhaust gas 12 condenses at the air flow intersection region 14 upon cooling, or liquefies and condenses, and further, ice adheres to the inner wall of the pipe of the crankcase ventilation pipe 3.

In order to enable the heat-conducting metal piece to effectively and directly heat and melt ice attached to the inner wall of the pipeline of the crankcase ventilation pipe 3 and to enable the heating piece 7 to serve as a barrier to prevent ice cubes from entering the supercharger 5 after being melted and damaging blades of the supercharger, in the embodiment of the utility model, the distance between the heating piece 7 and the position where the crankcase ventilation pipe 3 is connected with the air inlet manifold 4 can be as small as possible.

Considering that the distance between the heating element 7 and the position where the crankcase ventilation pipe 3 is connected with the intake manifold 4 is limited by the flexibility of the crankcase ventilation pipe 3, the engine water outlet pipe 2 and the intake manifold 4, and the icing of the crankcase ventilation pipe is not always right at the position where the crankcase ventilation pipe 3 is connected with the intake manifold 4, in an alternative embodiment, the distance between the heating element 7 and the position where the crankcase ventilation pipe 3 is connected with the intake manifold 4 can be not more than 3 times the diameter of the crankcase ventilation pipe.

In particular, the distance between the heating element 7 and the location where the crankcase ventilation duct 3 connects to the intake manifold 4 may be 2 times the diameter of the crankcase ventilation duct. For example, when the diameter of the crankcase ventilation duct 3 is 20mm, the distance between the heating element 7 and the position where the crankcase ventilation duct 3 is connected to the intake manifold 4 may be 40 mm.

In order to further enhance the blocking of the ice cubes by the heating element 7, in an alternative embodiment the heating element 7 may be a metal screen.

With this embodiment, smaller ice cubes can be blocked with a metal screen. Particularly, on one hand, the filter screen can prevent ice blocks in the ventilation pipe from falling off the inner wall of the pipeline and falling into a power system device such as a supercharger to cause damage; on the other hand, the metal filter screen has a heating function, and ice blocks sliding on the metal filter screen can be efficiently heated by contact.

Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a metal grid heating element according to an embodiment of the present invention. As shown in fig. 3, the heating member 7 may be a metal mesh in a mesh shape.

In the embodiment of the present invention, when the heating member 7 is a metal mesh in a mesh shape, the heat conductive metal member 8 and the heat absorbing member 6 may also be metal meshes in a mesh shape for convenience of manufacturing.

In particular, the mesh-shaped metal screen may be made of wire welded.

Referring to fig. 4, fig. 4 is a schematic sectional view of a mesh-shaped heating element according to an embodiment of the present invention. As shown in fig. 4, the heating member 7 may be a metal mesh having a hollow mesh shape.

Specifically, the metal filter screen in the shape of the hollowed-out mesh is hollowed-out sheet metal. Optionally, the heating element 7 may be in a circular hollow mesh shape, or may be in a square shape, a diamond shape, or the like, and this embodiment is not particularly limited.

In the embodiment of the present invention, for convenience of manufacturing, when the heating member 7 is a mesh-shaped metal screen, the heat absorbing member 6 may also be a mesh-shaped metal screen, and the heat conductive metal member 8 may be a solid sheet metal.

In view of the fact that ice may form between the heating element 7 and the position where the crankcase ventilation duct 3 is connected to the intake manifold 4, the heating element 7 cannot block the falling ice, and for this reason, in an alternative embodiment, the device may further comprise a secondary heating element 10, the secondary heating element 10 being mounted in the intake manifold 4 connected to one end of the supercharger 5; wherein, the secondary heating element 10 is a metal screen.

As shown in fig. 1, the secondary heating element 10, which is also a metal screen, can intercept again the falling ice that fails in the heating element 7 barrier, and if the ice forms between the heating element 7 and the position where the crankcase ventilation pipe 3 connects to the intake manifold 4, falls into the intake manifold 4, the secondary heating element 10 will prevent the ice from entering the supercharger.

Further, considering that ice cubes may also fall out of the meshes or openings of the heating element 7 in the case that the shape and size of the ice cubes is smaller than the size of the meshes or openings of the heating element 7, in an alternative embodiment the heating element 7 is a metal screen and the mesh openings of the secondary heating element 10 are smaller than the mesh openings of the heating element 7.

In the embodiment of the present invention, when the mesh openings of the secondary heating member 10 are smaller than the mesh openings of the heating member 7, and the ice cubes fall off from the mesh openings or the meshes of the heating member 7 when the ice cubes are smaller than the size of the mesh openings or the meshes of the heating member 7, the secondary heating member 10 blocks the ice cubes again, and prevents the ice cubes from entering the supercharger 5.

Furthermore, when any one of the heating element 7 and the secondary heating element 10 is a hollow mesh-shaped filter screen, the gas flow rate of the pipeline of the crankcase ventilation pipe 3 where the heating element 7 is located and/or the pipeline of the engine water outlet pipe 2 where the secondary heating element 10 is located can be adjusted, so that rectification is realized, and the working efficiency of an engine power system is improved. To this end, in an alternative embodiment, the total air flow area of the meshes of the secondary heating element 10 is different from the total air flow area of the meshes of the heating element 7.

Wherein, the total overfire area of the meshes refers to the sum of the cross-sectional areas of all the meshes on the component passing through the gas, and is used for representing the flow rate allowed to pass through the component per unit time.

Specifically, in the embodiment of the utility model, the proportion of the total overfire area of the meshes of the secondary heating element 10 to the total overfire area of the meshes of the heating element 7 is reasonably set, so that the flow rate of the gas in the front section of the exhaust manifold 4 where the secondary heating element 10 is located is consistent with or basically close to the flow rate of the gas in the crankcase ventilation pipe 3 where the heating element 7 is located, the gas entering the engine is prevented from generating turbulence, and the rectification effect of the gas in the power system pipeline is realized.

Illustratively, when the flow rate of the external air 13 in the front section of the exhaust manifold 4 is too high and the flow rate of the exhaust gas 12 in the crankcase ventilation pipe 3 is too low, it may cause turbulence in the air flow in the rear section of the exhaust manifold 4, i.e. turbulence is generated, which is not favorable for sufficient combustion in the engine cylinders, in which case the difference between the flow rates of the gases in the front section of the exhaust manifold 4 and the crankcase ventilation pipe 3 can be reduced by presetting the total overfire area of the meshes of the secondary heating element 10 in the exhaust manifold 4 to be reduced, and/or by setting the total overfire area of the meshes of the heating element 7 in the crankcase ventilation pipe 3 to be increased, and increasing the ratio of the total overfire area of the meshes of the secondary heating element 10 to the total overfire area of the meshes of the ventilation pipe of the heating element 7.

Wherein the arrangement reduces the total air flow area through the openings of the secondary heating elements 10 in the exhaust manifold 4 and/or increases the total air flow area through the openings of the heating elements 7 in the crankcase ventilation duct 3, i.e. three conditions are included:

in the first case, only the total overfire area of the meshes of the secondary heating elements 10 in the exhaust manifold 4 is set to be reduced;

in the second case, provision is made only for increasing the total air-passing area of the meshes of the heating element 7 in the crankcase ventilation duct 3;

in the third case, provision is made for increasing the total overfire area of the meshes of the heating element 7 in the crankcase ventilation duct 3 and for increasing the total overfire area of the meshes of the heating element 7 in the crankcase ventilation duct 3.

Based on the same or similar inventive concept, the embodiment of the utility model also provides a vehicle, and the vehicle comprises the crankcase ventilation pipe heating device according to any one of the embodiments.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or should not be construed as indicating or implying relative importance. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.

The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.

Claims (10)

1. A crankcase ventilation pipe heating device comprises a crankcase ventilation pipe (3) and an engine water outlet pipe (2), and is characterized by further comprising a heating element (7) arranged in the crankcase ventilation pipe (3) and a heat conduction metal piece (8) connected between the heating element (7) and the engine water outlet pipe (2);

the heat conduction metal piece (8) is used for conducting heat emitted by the engine water outlet pipe (2) to the heating piece (7), and the heating piece (7) is used for heating ice blocks condensed in the crankcase ventilation pipe (3).

2. An arrangement according to claim 1, characterized in that the arrangement further comprises a heat absorbing member (6) immersed in the engine coolant in the engine outlet pipe (2), said heat absorbing member (6) being connected to the heat conducting metal member (8).

3. The device according to claim 1, characterized in that the heat conducting metal piece (8) is also provided with an insulation layer (9) around it.

4. The arrangement according to claim 1, characterized in that the length of the heat-conducting metal piece (8) is not greater than the diameter of the crankcase ventilation duct (3).

5. An arrangement according to claim 1, characterized in that the distance between the heating element (7) and the location where the crankcase ventilation duct (3) is connected to the inlet manifold (4) is not more than 3 diameters of the crankcase ventilation duct (3).

6. Device according to claim 1, characterized in that the heating element (7) is a metal screen.

7. The device according to claim 1, characterized in that it further comprises a secondary heating element (10), said secondary heating element (10) being mounted in an intake manifold (4) connected to one end of the supercharger (5); wherein, the secondary heating element (10) is a metal screen.

8. Device according to claim 6, characterized in that the heating element (7) is a metal screen, the screen openings of the secondary heating element (10) being smaller than the screen openings of the heating element (7).

9. Device according to claim 6, characterized in that the total air-passing area of the meshes of the secondary heating element (10) is different from the total air-passing area of the meshes of the heating element (7).

10. A vehicle, characterized in that it comprises a crankcase ventilation duct heating arrangement according to any of claims 1-8.

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