CN214247455U - Forced ventilation monitoring system for automobile crankcase - Google Patents
Forced ventilation monitoring system for automobile crankcase Download PDFInfo
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- CN214247455U CN214247455U CN202023183169.5U CN202023183169U CN214247455U CN 214247455 U CN214247455 U CN 214247455U CN 202023183169 U CN202023183169 U CN 202023183169U CN 214247455 U CN214247455 U CN 214247455U
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- crankcase
- differential pressure
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- ventilation
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Abstract
The utility model discloses a forced ventilation monitoring system of an automobile crankcase, which comprises a crankcase, an air inlet system communicated with an air inlet of the crankcase and an exhaust system communicated with an exhaust port of the crankcase; the engine air inlet pipe is communicated with the ventilation pipe arranged on the engine air inlet pipe of the air inlet system, the other end of the ventilation pipe is provided with a differential pressure sensor, one port of the differential pressure sensor is communicated with the ventilation opening of the crankcase, the other port of the differential pressure sensor is communicated with the outside atmosphere, the differential pressure sensor is connected with the ECU through a cable harness, and the differential pressure sensor transmits a detected differential pressure signal to the ECU in real time. The utility model discloses the advantage lies in setting up pressure differential sensor between the vent department and the ventilation pipe of crankcase, utilizes pressure differential sensor to monitor the pressure differential of ventilation pipe and comes indirect monitoring crankcase forced ventilation system's integrality, and pressure differential sensor not only can realize the control, and is with low costs moreover, reduces the cost in business.
Description
Technical Field
The utility model belongs to the technical field of the car and specifically relates to a forced ventilation monitored control system of automobile crankcase is related to.
Background
The positive ventilation system of crankcase (i.e. PVC system) is characterized by that the mixed gas in the crankcase is guided into proper position of air inlet pipe by means of connecting pipe, and a portion of high-pressure tail gas discharged from crankcase can be returned into cylinder to make combustion again, so that it not only can reduce exhaust pollution, but also can raise the economy of engine. However, the national standard (GB 18352.6-2016) requires: if a vehicle uses a PCV system (i.e., positive crankcase ventilation system), the manufacturing facility should monitor the PCV system to ensure system integrity. The conventional automobile PCV system is mainly monitored in two modes, one mode is that two electromechanical integrated quick connectors are added on a ventilation pipeline of a crankcase, the two quick connectors are connected with electric wires, a connecting wire harness of each quick connector is connected to an on-board computer (namely an ECU), monitoring is realized by on-off of a circuit, the processing cost of each quick connector is high, and the investment of enterprises is increased; another monitoring method is to integrate crankcase ventilation with the cylinder head, which is expensive in investment. Therefore, how to design a monitoring system which is low in cost and can monitor the PVC system is an important issue to be solved by the manufacturing enterprises.
Disclosure of Invention
An object of the utility model is to provide a car crankcase forced draft monitored control system utilizes the pressure differential through the control ventilation pipe to change control crankcase forced draft system, simple structure and with low costs.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model discloses a forced ventilation monitoring system of an automobile crankcase, which comprises a crankcase, an air inlet system communicated with an air inlet of the crankcase and an exhaust system communicated with an exhaust port of the crankcase; the engine air inlet pipe is communicated with the ventilation pipe arranged on the engine air inlet pipe of the air inlet system, the other end of the ventilation pipe is provided with a differential pressure sensor, one port of the differential pressure sensor is communicated with the ventilation opening of the crankcase, the other port of the differential pressure sensor is communicated with the outside atmosphere, the differential pressure sensor is connected with the ECU through a cable harness, and the differential pressure sensor transmits a detected differential pressure signal to the ECU in real time.
In a preferred embodiment of the present invention, the air intake system includes the engine intake pipe, and an air cleaner and an air flow sensor are provided at an interval at an inlet of the engine intake pipe.
The utility model discloses the advantage lies in setting up pressure differential sensor between the vent department and the ventilation pipe of crankcase, utilizes pressure differential sensor to monitor the pressure differential of ventilation pipe and comes indirect monitoring crankcase forced ventilation system's integrality, and pressure differential sensor not only can realize the control, and is with low costs moreover, reduces the cost in business.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the forced ventilation monitoring system for the automobile crankcase of the present invention comprises a crankcase 1, an air intake system communicated with an air intake of the crankcase 1 and an air exhaust system communicated with an air exhaust of the crankcase 1, wherein the air intake system comprises an engine air intake pipe 2.1, an air filter 2.2 communicated with the engine air intake pipe 2.1 and an air flow sensor 2.3; a worm supercharger 4 is arranged between an exhaust pipeline 3 of the exhaust system and an engine air inlet pipe 2.1, a connecting pipe 5.1 is also arranged between the exhaust pipeline 3 and the engine air inlet pipe 2.1, and a control valve 5.2 and a cooler 5.3 are arranged on the connecting pipe 5.1;
an engine air inlet pipe 2.1 positioned at the rear side of the air flow sensor 2.3 is communicated with a vent pipe 6, the other end of the vent pipe 6 is provided with a differential pressure sensor 7, one port of the differential pressure sensor 7 is communicated with a vent hole of the crankcase 1, the other port of the differential pressure sensor 7 is communicated with the outside atmosphere, the differential pressure sensor 7 is electrically connected with the ECU through a cable harness, the differential pressure sensor 7 transmits a detected differential pressure signal to the ECU in real time, the ECU processes and analyzes the received differential pressure signal, and when differential pressure data analyzed by the ECU is within a preset range, the crankcase 1 is in a normal ventilation state; when the ventilation pipe 6 is disconnected, the ECU compares and analyzes the received differential pressure signals and identifies that the ventilation pressure is abnormal, thereby reporting a fault.
When detecting, ensuring that all detection conditions meet the conditions, and ending the detection operation when the detection conditions cannot meet the detection requirements; when all detection conditions are met, the differential pressure sensor 7 transmits the detected differential pressure signals to the ECU in real time, the ECU compares and analyzes the received differential pressure signals, and if the detected differential pressure is within a preset differential pressure range (namely is smaller than a preset differential pressure upper limit), no fault is indicated; when the differential pressure signal detected by the differential pressure sensor 7 is larger than the preset differential pressure upper limit after comparison and analysis by the ECU, the ventilation pipe 6 of the crankcase 1 is judged to have a fault, fault processing is carried out, and a fault lamp is activated at the same time.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in fig. 1), and if the specific posture is changed, the directional indicator is changed accordingly. In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (2)
1. A forced ventilation monitoring system of an automobile crankcase comprises a crankcase, an air inlet system communicated with an air inlet of the crankcase and an exhaust system communicated with an exhaust port of the crankcase; the method is characterized in that: the engine air inlet pipe is communicated with the ventilation pipe arranged on the engine air inlet pipe of the air inlet system, the other end of the ventilation pipe is provided with a differential pressure sensor, one port of the differential pressure sensor is communicated with the ventilation opening of the crankcase, the other port of the differential pressure sensor is communicated with the outside atmosphere, the differential pressure sensor is connected with the ECU through a cable harness, and the differential pressure sensor transmits a detected differential pressure signal to the ECU in real time.
2. The automotive positive crankcase ventilation monitoring system of claim 1, wherein: the air intake system comprises the engine air inlet pipe, and an air filter and an air flow sensor are arranged at the inlet of the engine air inlet pipe at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023183169.5U CN214247455U (en) | 2020-12-25 | 2020-12-25 | Forced ventilation monitoring system for automobile crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023183169.5U CN214247455U (en) | 2020-12-25 | 2020-12-25 | Forced ventilation monitoring system for automobile crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214247455U true CN214247455U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023183169.5U Active CN214247455U (en) | 2020-12-25 | 2020-12-25 | Forced ventilation monitoring system for automobile crankcase |
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| CN (1) | CN214247455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837769A (en) * | 2022-05-31 | 2022-08-02 | 岚图汽车科技有限公司 | Crankcase ventilation pipe icing verification method, device, equipment and storage medium |
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2020
- 2020-12-25 CN CN202023183169.5U patent/CN214247455U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837769A (en) * | 2022-05-31 | 2022-08-02 | 岚图汽车科技有限公司 | Crankcase ventilation pipe icing verification method, device, equipment and storage medium |
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