Crankcase ventilation pipe thermal control test system and method, heater and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a crankcase ventilation pipe thermal control test system and method, a heater and a vehicle, the system comprises an environment box, a gas simulation assembly, a ventilation pipeline, a collection assembly and an upper computer, and the environment box is used for simulating the target test environment temperature and placing a tested product; simulating a target exhaust action of the crankcase ventilation system by using a gas simulation assembly, and generating a target flow of airflow based on the target exhaust action; the ventilation pipeline is connected with the gas simulation piece and the tested product; the collecting assembly collects the target exhaust temperature and the airflow outlet temperature. And the upper computer is used for generating a thermal control test result of the tested product for the crankcase ventilation pipe based on the target exhaust temperature and the airflow outlet temperature of the tested product. Therefore, the problems that two temperature control points of the environment temperature and the exhaust temperature generally need to be generated and controlled through two different temperature control systems, the structure is complex, and the cost is high in the prior art are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a crankcase ventilation pipe thermal control test system, method, heater and vehicle. Background Art

[0002] In the crankcase ventilation system of a gasoline supercharged engine, when the engine is running under high load, the exhaust gas in the crankcase will re-enter the cylinder for combustion after mixing with the filtered cold air through the crankcase ventilation pipe under the pressure difference inside the system. However, under extremely low ambient temperature conditions (e.g. -20°C), the water vapor in the exhaust gas will suddenly encounter cold and condense into ice at the intersection of the ventilation pipe and the intake main pipe, thus causing blockage of the ventilation system. In order to avoid this problem, a heater is usually installed at the intersection to prevent ice from occurring.

[0003] Therefore, the thermal control performance of the crankcase ventilation tube heater is very important, especially in the product design stage and feature development process, it is necessary to simulate the actual working conditions in the laboratory environment to evaluate the anti-icing performance of the heater. The key factors involved in this evaluation include: ambient temperature; the temperature of the crankcase ventilation system exhaust before it reaches the intersection; the temperature of the intersection tube; and the crankcase ventilation system exhaust flow rate.

[0004] In order to accurately control the above test conditions, two temperature control points need to be set to control the ambient temperature (generally between -40°C and 0°C) and the crankcase ventilation system exhaust temperature (usually maintained between +1°C and +10°C). The relevant technology usually requires two independent temperature control systems to implement them separately. Since the two temperature control points are separated by a ventilation pipe only a few millimeters thick, additional insulation measures are required for the ventilation pipe, which makes the structure of the entire test bench complicated and puts forward higher requirements for space layout, while also increasing the test cost.

[0005] In summary, in order to solve the problem that the water vapor in the crankcase exhaust gas suddenly encounters cold at the intersection of the ventilation pipe and the intake main pipe and freezes at the intersection of the two pipes, the relevant technology uses two independent temperature control systems to implement them separately. However, there are still problems such as complex structure, high requirements for the spatial layout of the test bench, and high cost. Summary of the invention

[0006] The present application provides a crankcase ventilation pipe thermal control test system, method, heater and vehicle to solve the problems of related technologies that two temperature control points, namely, ambient temperature and exhaust temperature, are generated and controlled by two different temperature control systems, resulting in complex structure and high cost.

[0007] The first aspect of the present application provides a crankcase ventilation pipe thermal control test system, including: an environmental chamber, used to simulate the target test environment temperature and place the tested product; a gas simulation component, used to simulate the target exhaust action of the crankcase ventilation system, and generate an airflow with a target flow rate based on the target exhaust action; a ventilation duct, wherein the ventilation duct connects the gas simulation component and the tested product, and part of the ventilation duct is placed in the environmental chamber, and the airflow in the part of the duct is subjected to heat exchange with the environmental chamber to generate an airflow with a target exhaust temperature at a target position; a collection component, which collects the target exhaust temperature and the airflow outlet temperature respectively; a host computer, used to generate a thermal control test result of the tested product for the crankcase ventilation pipe based on the target exhaust temperature and the airflow outlet temperature of the tested product.

[0008] Optionally, the host computer is also used to: obtain target test requirements; identify target exhaust temperature and target flow rate of the target test requirements; and determine a target length of a portion of the pipeline according to the target exhaust temperature and target flow rate.

[0009] Optionally, the crankcase ventilation pipe thermal control test system further includes: an adjusting member for adjusting a target length of a portion of the pipe.

[0010] Optionally, the adjusting member is an electrical control mechanism.

[0011] Optionally, the acquisition component includes a first temperature sensor disposed at the target position and a second temperature sensor disposed at the air flow outlet of the tested product.

[0012] Optionally, the gas simulation component includes a gas source and a flow meter.

[0013] Optionally, the product being tested is a heater for a crankcase ventilation tube.

[0014] A second aspect of the present application provides a method for thermal control testing of a crankcase ventilation pipe, and the method is based on the thermal control testing system of the crankcase ventilation pipe of the first aspect for testing, and includes the following steps: obtaining target test requirements, and identifying target exhaust temperature and target flow rate of the target test requirements; determining a portion of the ventilation duct according to the target exhaust temperature and target flow rate, and placing the portion of the ventilation duct in an environmental chamber, and after heat exchange between the airflow in the portion of the duct and the environmental chamber, generating an airflow with a target exhaust temperature at a target position; collecting the target exhaust temperature and the airflow outlet temperature, and generating a thermal control test result of the crankcase ventilation pipe of the tested product based on the target exhaust temperature and the airflow outlet temperature of the tested product.

[0015] A third aspect of the present application provides a heater for a crankcase ventilation pipe, and the heater is tested based on the crankcase ventilation pipe thermal control test system of the first aspect.

[0016] A fourth aspect of the present application provides a vehicle, characterized by comprising a heater for the crankcase ventilation pipe of the third aspect.

[0017] Therefore, this application includes the following beneficial effects:

[0018] The embodiment of the present application can place part of the ventilation duct in an environmental chamber, use the heat exchange between the duct and the environmental chamber to generate an airflow with a stable exhaust temperature, and adjust the length of the duct in the environmental chamber to achieve a stable exhaust temperature under different experimental requirements, so that only one constant temperature environmental chamber is needed to simulate the target test environment temperature and place the tested product, significantly reducing the difficulty of setting up the test system and maintaining sufficient accuracy and reliability. Thus, the related technology solves the problem of needing to generate and control the two temperature control points of ambient temperature and exhaust temperature through two different temperature control systems, which is complex in structure and high in cost.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a structural example diagram of a crankcase ventilation pipe thermal control test system provided according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a crankcase ventilation pipe thermal control test system according to an embodiment of the present application;

[0023] Figure 3 Schematic diagram of the process of the crankcase ventilation pipe thermal control test method provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0025] The following describes the crankcase ventilation pipe thermal control test system, method, heater and vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the problems that the related technology mentioned in the above background technology generates and controls the two temperature control points of ambient temperature and exhaust temperature through two different temperature control systems, the structure is complex, the cost is high, etc., the present application provides a crankcase ventilation pipe thermal control test system, the system uses the coordination of the environmental chamber, the gas simulation component, the ventilation duct, the acquisition component and the host computer, and uses the gas simulation component to simulate the target exhaust action of the crankcase ventilation system and generate the target flow of the airflow, the ventilation duct connects the gas simulation component and the tested product, and then uses the acquisition component to collect the target exhaust temperature and the airflow outlet temperature, and finally uses the host computer to generate the thermal control test result of the tested product for the crankcase ventilation pipe according to the target exhaust temperature and the airflow outlet temperature of the tested product, and only needs to use a constant temperature environmental chamber to simulate the target test environment temperature and place the tested product, which significantly reduces the difficulty of building the test system and maintains sufficient accuracy and reliability. Thus, the related technology needs to generate and control the two temperature control points of ambient temperature and exhaust temperature through two different temperature control systems, the structure is complex, the cost is high, and the like.

[0026] Specifically, Figure 1 This is a structural example diagram of a crankcase ventilation pipe thermal control test system provided in an embodiment of the present application.

[0027] like Figure 1 As shown, the crankcase ventilation pipe thermal control test system includes: an environmental chamber 101, a gas simulation component 102, a ventilation pipe 103, a collection component 104 and a host computer 105.

[0028] Among them, the environmental box 101 is used to simulate the target test environment temperature and place the tested product; the gas simulation component 102 is used to simulate the target exhaust action of the crankcase ventilation system, and generate an airflow with a target flow rate based on the target exhaust action; the ventilation duct 103, wherein the ventilation duct 103 connects the gas simulation component 102 and the tested product, and part of the ventilation duct 103 is placed in the environmental box 101, and the airflow in the part of the duct is subjected to heat exchange with the environmental box 101 to generate an airflow with a target exhaust temperature at the target position; the collection component 104 collects the target exhaust temperature and the airflow outlet temperature respectively; the host computer 105 is used to generate the thermal control test results of the tested product for the crankcase ventilation pipe based on the target exhaust temperature and the airflow outlet temperature of the tested product.

[0029] It can be understood that the embodiment of the present application uses a gas simulation component 102 to simulate the target exhaust action of the crankcase ventilation system, generates an airflow of a corresponding target flow rate according to the target exhaust action, and the airflow flows to the product under test through the ventilation duct 103, wherein the product under test is placed in an environmental chamber 101 that simulates the target test environment temperature, and the airflow in part of the duct is heat exchanged with the environmental chamber 101 to generate an airflow of a target exhaust temperature at the target position, and then the target exhaust temperature and the airflow outlet temperature are collected by the acquisition component 104, and finally the host computer 105 generates a thermal control test result of the crankcase ventilation pipe of the product under test based on the target exhaust temperature and the airflow outlet temperature of the product under test.

[0030] In the embodiment of the present application, the gas simulation component 102 includes a gas source and a flow meter.

[0031] Among them, the gas source is responsible for providing a stable gas supply, which can be a compressed air tank or other types of gas generators, which can be selected according to actual needs; the flow meter is used to measure the gas flow passing through.

[0032] It can be understood that the gas simulation component 102 in the embodiment of the present application includes a gas source that provides a stable gas supply and a flow meter that measures the gas flow, which can provide gas to the system and measure the gas flow.

[0033] In an embodiment of the present application, the crankcase ventilation pipe thermal control test system further includes: an adjusting member for adjusting a target length of a portion of the pipe.

[0034] Among them, part of the pipeline refers to a part of the ventilation pipeline 103, which is a hose with sufficient flexibility, passing through a small hole in the wall of the environmental chamber and placed in the environmental chamber 101; the target length refers to the length of the pipeline extended into the environmental chamber 101 as required.

[0035] It is understandable that the embodiment of the present application further includes an adjustment member for adjusting the length of the hose of the ventilation duct 103 extending into the environmental box 101 . The required gas temperature can be obtained by adjusting the length of the ventilation duct 103 placed in the environmental box 101 .

[0036] In the embodiment of the present application, the adjusting member is an electrical control mechanism.

[0037] The electrical control mechanism may be an electromagnetic control system, which adjusts the target length extending into the environmental chamber through simple electrical facilities such as a cylinder or an electromagnetic valve.

[0038] It is understandable that the embodiment of the present application also includes an electrical control mechanism as a regulating part, and through simple electrical facilities such as a cylinder or a solenoid valve, the length of the hose of the ventilation pipe 103 extending into the environmental box 101 is controlled to obtain the required gas temperature.

[0039] In the embodiment of the present application, the collection component 104 includes a first temperature sensor disposed at a target position and a second temperature sensor disposed at an air flow outlet of the tested product.

[0040] The target position is the middle of the ventilation duct 103 placed in the environmental box 101; the first temperature sensor is used to measure the first temperature, which is the target exhaust temperature; and the second temperature sensor is used to measure the second temperature, that is, the airflow outlet temperature.

[0041] It can be understood that the embodiment of the present application sets the first temperature sensor in the middle of the ventilation duct 103 in the environmental chamber 101 to measure the air flow temperature in the duct, that is, the first temperature; and places the second temperature sensor at the air flow outlet of the tested product to measure the air flow outlet temperature, that is, the second temperature.

[0042] In the embodiment of the present application, the host computer 105 is also used to: obtain target test requirements; identify the target exhaust temperature and target flow rate of the target test requirements; and determine the target length of the portion of the pipeline based on the target exhaust temperature and target flow rate.

[0043] Among them, the target test requirements may include detecting the ambient temperature, the temperature of the crankcase ventilation system exhaust before it reaches the intersection point, the temperature of the intersection point pipe body, and the exhaust flow rate of the crankcase ventilation system.

[0044] It can be understood that the embodiments of the present application can determine the target exhaust temperature and target flow rate according to the target test requirements. The target test requirements can be obtained by manually inputting them into the host computer 105, etc. The host computer 105 identifies the target exhaust temperature and target flow rate of the target test requirements, and determines the target length of the partial pipeline based on the target exhaust temperature and target flow rate.

[0045] In the embodiment of the present application, the tested product is a heater of a crankcase ventilation pipe.

[0046] It can be understood that the tested product in the embodiment of the present application is a heater of the crankcase ventilation pipe, and the thermal control performance of the crankcase ventilation pipe heater is tested through the embodiment of the present application.

[0047] According to the crankcase ventilation pipe thermal control test system proposed in the embodiment of the present application, part of the ventilation duct can be placed in an environmental chamber, and the heat exchange effect between the duct and the environmental chamber can be used to generate an airflow with a stable exhaust temperature. By adjusting the length of the duct in the environmental chamber, a stable exhaust temperature under different experimental requirements can be achieved. Therefore, only one constant temperature environmental chamber is needed to simulate the target test environment temperature and place the tested product, which significantly reduces the difficulty of setting up the test system and maintains sufficient accuracy and reliability.

[0048] The crankcase ventilation pipe thermal control test system proposed in the embodiment of the present application is further described below through a specific embodiment.

[0049] like Figure 2 As shown, the crankcase ventilation pipe thermal control test system proposed in this embodiment includes an environmental chamber 101, an air source 201, a flow meter 202, a first temperature sensor 203, a second temperature sensor 204 and a tested product 205.

[0050] like Figure 2 As shown, the two gray thick lines represent the ventilation ducts, and the dotted arrows represent the direction of the airflow. By adjusting the gas source 201, a given amount of flow can be obtained. The gray thick line indicates the duct, and the corrugated part represents a hose with sufficient flexibility, which passes through the small holes on the wall of the environmental chamber. The tested product 205 is fixedly placed in the environmental chamber 101. The tested product 205 can generate heat after being powered on. By adjusting the length of the heat exchange pipe placed in the low-temperature environmental chamber 101, the required first temperature (gas temperature) can be obtained. Under given conditions, after the temperature gas flows through the tested product 205, the second temperature, i.e., the temperature of the outlet wall of the tested product 205, is obtained through the coupling effect of the two factors of the low temperature of the environment and the heating of the product.

[0051] Among them, adjusting the length of the heat exchange pipe placed in the low temperature environment box 101 is to adjust Figure 2 The length of the pipe at the black dotted line can be adjusted manually or by installing an electromagnetic control system. The length of the heat exchange pipe extending into the environmental chamber can be adjusted by simple electrical equipment such as a cylinder or an electromagnetic valve. At the same time, a programmable control method such as a PLC (Programmable Logic Controller) can be used to set the insertion length and the first temperature setting temperature as two parameters, with the first temperature as the independent variable and the insertion length as the dependent variable, so that closed-loop control can be achieved for the first temperature.

[0052] Next, a crankcase ventilation pipe thermal control test method proposed in an embodiment of the present application is described with reference to the accompanying drawings.

[0053] Figure 3 It is a flow chart of a crankcase ventilation pipe thermal control test method according to an embodiment of the present application.

[0054] like Figure 3 As shown, the crankcase ventilation pipe thermal control test method is based on a crankcase ventilation pipe thermal control test system for testing, and the steps are as follows.

[0055] In step S301, a target test requirement is obtained, and a target exhaust temperature and a target flow rate of the target test requirement are identified.

[0056] It can be understood that the embodiments of the present application can determine the target exhaust temperature and target flow rate according to the target test requirements. The target test requirements can be obtained by manually inputting them into the host computer, and the host computer can identify the target exhaust temperature and target flow rate of the target test requirements.

[0057] In step S302, a portion of the ventilation duct is determined according to the target exhaust temperature and the target flow rate, and the portion of the ventilation duct is placed in an environmental chamber. After the airflow in the portion of the duct exchanges heat with the environmental chamber, an airflow with a target exhaust temperature is generated at a target position.

[0058] It can be understood that the embodiment of the present application can determine the target length of a portion of the ventilation duct according to the target exhaust temperature and the target flow rate, and place the portion of the duct with the target length in an environmental chamber. The airflow in the portion of the duct will exchange heat with the environmental chamber, thereby generating an airflow with a target exhaust temperature at the target position. In this way, the temperature of the airflow can be controlled by controlling the length of the portion of the duct, which significantly reduces the difficulty of building the test system and maintains sufficient accuracy and reliability.

[0059] In step S303, the target exhaust temperature and the airflow outlet temperature are collected, and a thermal control test result of the crankcase ventilation pipe of the tested product is generated based on the target exhaust temperature and the airflow outlet temperature of the tested product.

[0060] The acquisition of the target exhaust temperature and the airflow outlet temperature is achieved by using a first temperature sensor and a second temperature sensor.

[0061] It can be understood that the embodiment of the present application generates a thermal control test result of the crankcase ventilation pipe of the tested product by collecting the target exhaust temperature and the airflow outlet temperature, so that the thermal control performance of the crankcase ventilation pipe heater can be analyzed based on the thermal control test result of the crankcase ventilation pipe.

[0062] It should be noted that the aforementioned explanation of the crankcase ventilation pipe thermal control test system embodiment is also applicable to the crankcase ventilation pipe thermal control test method of this embodiment, and will not be repeated here.

[0063] According to the crankcase ventilation pipe thermal control test method proposed in the embodiment of the present application, the target exhaust temperature and target flow rate can be determined by obtaining the target test requirements, and the partial pipe length of the ventilation pipe placed in the environmental chamber can be determined according to the target exhaust temperature and target flow rate. The heat exchange effect between the pipe and the environmental chamber is used to generate an airflow with a stable exhaust temperature. The stable exhaust temperature under different experimental requirements can be achieved by adjusting the length of the pipe in the environmental chamber. Therefore, only one constant temperature environmental chamber is needed to simulate the target test environment temperature and place the tested product, which significantly reduces the difficulty of setting up the test system and maintains sufficient accuracy and reliability. It solves the problems that the related technology generally needs to generate and control the two temperature control points of ambient temperature and exhaust temperature through two different temperature control systems, and the structure is complex and the cost is high.

[0064] An embodiment of the present application also provides a heater for a crankcase ventilation pipe, and the heater is tested based on the above-mentioned crankcase ventilation pipe thermal control test system.

[0065] An embodiment of the present application also provides a vehicle, which includes the above-mentioned heater for the crankcase ventilation pipe.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0069] It should be understood that the various parts of the present application can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, the steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0070] A person of ordinary skill in the art may understand that all or part of the steps carried by the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the above-mentioned program may be stored in a computer-readable storage medium, which, when executed, includes one of the steps of the method embodiment or a combination thereof.

[0071] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A crankcase ventilation pipe thermal control test system, characterized in that: include: Environmental chamber, used to simulate the target test environment temperature and place the tested product; A gas simulation component, used for simulating a target exhaust action of a crankcase ventilation system, and generating an airflow of a target flow rate based on the target exhaust action; A ventilation duct, wherein the ventilation duct connects the gas simulation component and the product under test, a portion of the ventilation duct is placed in the environmental chamber, and the airflow in the portion of the duct exchanges heat with the environmental chamber to generate an airflow of a target exhaust temperature at a target position; A collection component for collecting the target exhaust temperature and the airflow outlet temperature respectively; The host computer is used to generate a thermal control test result of the crankcase ventilation pipe of the tested product based on the target exhaust temperature and the airflow outlet temperature of the tested product.

2. The crankcase ventilation pipe thermal control test system according to claim 1, characterized in that: The host computer is also used for: Obtain target test requirements; identifying a target exhaust temperature and a target flow rate for the target test requirement; A target length of the portion of the pipeline is determined according to the target exhaust temperature and the target flow rate.

3. The crankcase ventilation pipe thermal control test system according to claim 2, characterized in that: Also includes: An adjusting member is used to adjust a target length of the portion of the pipeline.

4. The crankcase ventilation pipe thermal control test system according to claim 3, characterized in that: The adjusting member is an electrical control mechanism.

5. The crankcase ventilation pipe thermal control test system according to claim 1, characterized in that: The acquisition component includes a first temperature sensor disposed at the target position and a second temperature sensor disposed at the air flow outlet of the tested product.

6. The crankcase ventilation pipe thermal control test system according to claim 1, characterized in that: The gas simulation component includes a gas source and a flow meter.

7. The crankcase ventilation pipe thermal control test system according to claim 1, characterized in that: The product under test is a heater for a crankcase ventilation pipe.

8. A crankcase ventilation pipe thermal control test method, characterized in that: The method is based on the crankcase ventilation pipe thermal control test system according to any one of claims 1 to 6 for testing, wherein the method comprises the following steps: Obtaining a target test requirement, and identifying a target exhaust temperature and a target flow rate of the target test requirement; Determine a portion of the ventilation duct according to the target exhaust temperature and the target flow rate, place the portion of the ventilation duct in the environmental chamber, and generate an airflow of the target exhaust temperature at a target position after the airflow in the portion of the duct exchanges heat with the environmental chamber; The target exhaust temperature and the airflow outlet temperature are collected, and a thermal control test result of the tested product on the crankcase ventilation pipe is generated based on the target exhaust temperature and the airflow outlet temperature of the tested product.

9. A heater for a crankcase ventilation pipe, characterized in that: The heater is tested based on the crankcase ventilation pipe thermal control test system according to any one of claims 1-6.

10. A vehicle, characterized in that: A heater comprising the crankcase ventilation tube of claim 9.

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