CN218760165U

CN218760165U - EGR system with heating flow channel and sensor seat

Info

Publication number: CN218760165U
Application number: CN202223138588.6U
Authority: CN
Inventors: 吴良杰; 王冲有; 张雷; 杨仕明
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-28
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a from EGR system of taking heating runner, including EGR valve, disk seat, sensor seat, still include the heating water route, the heating water route includes first heating runner, second heating runner, intake pipe, connecting pipe, wet return, the water inlet end of intake pipe and the cooling water outlet end of air compressor machine or engine organism are connected, and the entering of the first heating runner is connected to the other end, and the both ends of connecting pipe are connected the export of first heating runner and the import of second heating runner respectively, the export of second heating runner is connected to one end of wet return, and the other end backwater forms the circulation heating water route before the water pump or before the thermosistor; the first heating flow passage is integrated outside the EGR valve; the second heating flow channel is integrated on the outer side of the sensor base. The utility model has the advantages of simple structure, low arrangement cost, obvious deicing effect and the like.

Description

EGR system with heating flow channel and sensor seat

Technical Field

The utility model relates to an engine EGR system technical field especially relates to a from EGR system and sensor seat of taking heating runner.

Background

EGR systems require real-time measurement of EGR exhaust gas flow to accurately control the amount of exhaust gas that participates in combustion to meet emission standards. The method of venturi tube, temperature sensor and pressure sensor is generally adopted for measuring the waste gas flow, the venturi tube measures the pressure difference generated when the waste gas flows through, different pressure difference values are generated due to different flow speeds of the waste gas, and the waste gas flow can be measured through the temperature and pressure values of the waste gas at that time. After the automobile is stopped in a cold area, water vapor cannot be discharged in time, and the water vapor is condensed and accumulated at low temperature overnight to form ice blocks to block an internal passage of a part of the EGR system. However, most of the existing EGR systems and Venturi tubes do not have a heating function, when the ambient temperature is too low, condensed water in exhaust gas can be in an EGR pipeline and a sensor seat, and the EGR valve is frozen to cause the EGR systems to be incapable of working, so that the whole vehicle running of an engine is influenced.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, improve with low costs, the effectual EGR system and sensor seat of deicing.

Therefore, the utility model provides a from EGR system and sensor seat of taking heating runner.

Preferably, the present invention may also have the following technical features:

an EGR system with a heating flow channel comprises an EGR valve, a valve seat, a sensor and a sensor seat, wherein the EGR valve is arranged on the valve seat and is communicated with the sensor seat through a waste gas pipeline; the first heating flow passage is integrated outside the EGR valve; the second heating flow channel is integrated on the outer side of the sensor base.

Furthermore, a part of the pipe body of the water return pipe is fixed on the waste gas pipeline through a lock catch.

Further, the water taking-back water gap of the water taking pipe has a certain pressure difference, and the water flow of the heating waterway is ensured.

Further, the flow rate of the heating water path is more than 5L/min.

Furthermore, the sensor comprises a differential pressure sensor and a pressure sensor, and both the differential pressure sensor and the pressure sensor are arranged on the upper right side of the sensor seat; the second heating flow channel is arranged along the upper left side of the sensor seat and is arranged along the length direction of the sensor seat.

Further, the second heating flow channel is a hollow straight pipe body.

Further, the EGR valve includes the valve body, the inside of valve body is equipped with including valve block, valve rod, first heating runner is the hollow straight tube body, and it is established at the middle part of valve body, and is close to the valve rod, the valve block department that freeze easily inside the valve body.

The sensor seat assembled on the EGR system with the heating flow channel comprises a seat body, a differential pressure sensor and a pressure sensor, wherein the differential pressure sensor and the pressure sensor are arranged on the upper right side of the seat body, and a second heating flow channel is integrated on the upper left side of the seat body and is arranged along the length direction of the seat body.

Further, the second heating flow channel is a hollow straight pipe body.

The utility model discloses beneficial effect with the prior art contrast includes: through set up the heating water route on the EGR system, the ice-cube that condenses at the EGR system that melts that can be quick improves the operation security of engine. The second heating flow channel is arranged at a position close to the differential pressure sensor and the pressure sensor, so that the efficiency of transferring heat to the differential pressure sensor and the pressure sensor by the second heating flow channel is improved, and ice blocks condensed on the differential pressure sensor and the pressure sensor are quickly melted.

Drawings

Fig. 1 is a schematic diagram of an EGR system according to the present invention, in which arrows indicate the flow direction of cooling water.

Fig. 2 is a diagram of the structure of the sensor holder of the present invention.

Fig. 3 is a comparison graph of the test temperature change of the present invention.

Description of the reference numerals

1. An EGR valve; 2. a sensor seat; 3. a second heating flow channel; 4. a water return pipe; 5. a differential pressure sensor; 6. a pressure sensor; 7. a connecting pipe; 8. a water intake pipe; 9. an exhaust gas passage.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following embodiments. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.

Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts, unless otherwise specified.

As shown in fig. 1 to 3, the EGR system with a heating channel comprises an EGR valve 1, a valve seat, a sensor, and a sensor seat 2, wherein the EGR valve 1 is mounted on the valve seat and is communicated with the sensor seat 2 through an exhaust gas pipe 9. The sensor seat 2 is provided with the sensor and is further integrated with a second heating flow channel 3, and a first heating flow channel is integrated on the outer side of the EGR valve 1. The heating water route includes first heating runner, second heating runner 3, intake pipe 8, connecting pipe 7, wet return 4, the end of intaking of intake pipe 8 and the cooling water of air compressor machine or engine organism (like cylinder cap water jacket) play water end connection, the entering of first heating runner is connected to the other end, the export of first heating runner and the import of second heating runner 3 are connected respectively to the both ends of connecting pipe 7, the export of second heating runner 3 is connected to the one end of wet return 4, and the other end backwater forms a new circulation heating water route before the water pump or before the thermosistor. And part of the pipe body of the water return pipe 4 is fixed on the waste gas pipeline 9 through lock catches. Generally, the cooling water is used to cool various parts of the engine, so as to maintain the good working performance of the engine. In the present embodiment, a circulation heating water path is added, and the parts of the EGR system are defrosted by the heated cooling water. The water taking-back opening of the water taking pipe 8 needs to ensure enough pressure difference so as to ensure that the heating waterway has enough water flow, and the flow of the heating waterway is more than 5L/min.

Preferably, the sensor comprises a differential pressure sensor 5 and a pressure sensor 6, both the differential pressure sensor 5 and the pressure sensor 6 are arranged on the upper right side of the sensor base 2, and the second heating flow channel 3 is arranged along the upper left side of the sensor base 2 and along the length direction of the sensor base 2. Arranging the second heating flow path 3 at a position close to the differential pressure sensor 5 and the pressure sensor 6 improves the efficiency of the second heating flow path 3 in transferring heat to the differential pressure sensor 5 and the pressure sensor 6, and rapidly melts the ice cubes condensed at the differential pressure sensor 5 and the pressure sensor 6. Preferably, the second heating flow channel 3 is a hollow straight tube body.

The EGR valve comprises a valve body, a valve plate and a valve rod are arranged in the valve body, the first heating flow channel is integrated on the outer side of the valve body, and after the first heating flow channel is heated, the valve body is heated by the first heating flow channel through a heat transfer method. Specifically, the first heating flow channel is a hollow pipe body, is arranged in the middle of the valve body and is close to positions such as a valve rod and a valve plate which are easy to freeze in the valve body. The first heating flow channel and the valve body are integrally formed.

Referring to fig. 2, the sensor seat with the heating flow channel comprises a seat body 21, a differential pressure sensor 5 and a pressure sensor 6, wherein the differential pressure sensor 5 and the pressure sensor 6 are installed on the upper right side of the seat body 21, a second heating flow channel 3 is integrated on the outer side of the seat body 21, and the second heating flow channel 3 is arranged on the upper left side of the seat body 21 and arranged along the length direction of the seat body 21. The second heating flow passage 3 and the seat body 21 are integrally formed.

The EGR system with the heating flow channel is assembled into an engine, the engine is started under the simulated low-temperature environment, the time when the differential pressure sensor 5 reaches 0 ℃ is observed, and the differential pressure sensor 5 is represented by dp. The method comprises the following steps of selecting 1 group of comparative proportions, selecting 2 groups of embodiments as test schemes, wherein the embodiments adopt the scheme of the application, wherein in the embodiment 1, the backwater of a backwater pipe is returned to a thermostat (thermostat), and in the embodiment 2, the backwater of the backwater pipe is returned to a water pump. The comparative example used a conventional sensor mount without a heated flow channel. Meanwhile, other test conditions are set to be the same, such as the selected temperature conditions: the ambient temperature is-23 ℃; the engine test conditions are as follows: an idle heat engine; in example 1 and example 2, the flow rate of water passing through the second heating flow channel was the same. The test results are shown in the following figure:

referring again to FIG. 3, wherein line 10 represents the EGRdp time temperature curve of example 2; line 20 represents engine speed; line 30 represents the EGRdp time temperature profile of example 1; line 40 represents the EGRdp time temperature curve for the comparative example. Therefore, the deicing effect of the embodiment 1 and the embodiment 2 adopting the technical scheme of the application is obviously better than that of a comparative example, and dp signal alarm is avoided. Among them, the deicing effect of example 2 is superior to that of example 1.

Those skilled in the art will recognize that numerous variations are possible in light of the above description, and therefore the examples and drawings are merely intended to describe one or more specific embodiments.

While there has been described and illustrated what are considered to be example embodiments of the present invention, it will be understood by those skilled in the art that various changes and substitutions can be made therein without departing from the spirit of the invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the present invention without departing from the central concept described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents falling within the scope of the present invention.

Claims

1. The utility model provides a from EGR system of taking heating runner, includes EGR valve, disk seat, sensor seat, the EGR valve is installed on the disk seat to communicate through exhaust gas conduit and sensor seat, the sensor seat is installed sensor, its characterized in that: the water-cooling system is characterized by further comprising a heating water path, wherein the heating water path comprises a first heating flow path, a second heating flow path, a water taking pipe, a connecting pipe and a water return pipe, the water inlet end of the water taking pipe is connected with the water outlet end of cooling water of the air compressor or the engine body, the other end of the water taking pipe is connected with the inlet of the first heating flow path, the two ends of the connecting pipe are respectively connected with the outlet of the first heating flow path and the inlet of the second heating flow path, one end of the water return pipe is connected with the outlet of the second heating flow path, and the other end of the water return pipe returns water to the position in front of the water pump or the temperature regulator to form a circulating heating water path; the first heating flow passage is integrated outside the EGR valve; the second heating flow channel is integrated on the outer side of the sensor base.

2. The EGR system with self-heating flowpath of claim 1 wherein: and part of the pipe body of the water return pipe is fixed on the waste gas pipeline through a lock catch.

3. The EGR system with self-heating flowpath of claim 1 wherein: the water taking port of the water taking pipe has a certain pressure difference, so that the water flow of the heating waterway is ensured.

4. The EGR system with heating channel of claim 3 wherein: the flow rate of the heating water path is more than 5L/min.

5. The EGR system with self-heating flowpath of claim 1 wherein: the sensor comprises a differential pressure sensor and a pressure sensor, and the differential pressure sensor and the pressure sensor are both arranged on the upper right side of the sensor seat; the second heating flow channel is arranged along the upper left side of the sensor base and is arranged along the length direction of the sensor base.

6. The EGR system with heating channel of claim 1 wherein: the second heating flow channel is a hollow straight pipe body.

7. The EGR system with heating channel of claim 1 wherein: the EGR valve comprises a valve body, wherein the valve body is internally provided with a valve plate and a valve rod, the first heating flow channel is a hollow straight pipe body, is arranged in the middle of the valve body and is close to the valve rod and the valve plate which are easy to freeze in the valve body.

8. A sensor seat assembled in the EGR system with a heating flow channel as described in claim 1, comprising a seat body, a differential pressure sensor and a pressure sensor, wherein the differential pressure sensor and the pressure sensor are installed on the upper right side of the seat body, and the sensor seat is characterized in that: and a second heating flow channel is integrated on the upper left side of the seat body and is arranged along the length direction of the seat body.

9. A sensor holder as claimed in claim 8, wherein: the second heating flow channel is a hollow straight pipe body.