CN111441884A - Internal leakage monitoring device and method for EGR cooler - Google Patents
Internal leakage monitoring device and method for EGR cooler Download PDFInfo
- Publication number
- CN111441884A CN111441884A CN202010307456.8A CN202010307456A CN111441884A CN 111441884 A CN111441884 A CN 111441884A CN 202010307456 A CN202010307456 A CN 202010307456A CN 111441884 A CN111441884 A CN 111441884A
- Authority
- CN
- China
- Prior art keywords
- egr cooler
- collector
- electromagnetic valve
- drain pipe
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000110 cooling liquid Substances 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to an internal leakage monitoring device and method for an EGR cooler. The monitoring device comprises a collector arranged on an EGR cooler air outlet pipe, wherein a sensor for monitoring leakage is arranged at a communication port of the collector and the EGR cooler air outlet pipe, a drain pipe and a battery valve are arranged on the collector, and the battery valve is arranged between the collector and the drain pipe and used for controlling the on-off of a collector pipeline and the drain pipe. And a cooling liquid collector and an electromagnetic valve are additionally arranged on an air outlet pipeline of the EGR cooler, and the electromagnetic valve is connected with an Engine Electronic Control Unit (EECU). The engine electronic control unit EECU prompts a driver by judging whether the inside of the EGR cooler leaks or not, and prevents serious damage to an engine and a vehicle caused by the leakage inside the EGR cooler.
Description
Technical Field
The invention relates to an engine system, in particular to an internal leakage monitoring device and method of an EGR cooler.
Background
At present, a cooler on a common engine EGR system structure is directly connected into an air inlet system through a pipeline, and whether cooling liquid in the pipeline is leaked or not is not effectively monitored. When the engine EGR system is leaked abnormally, if the leakage is not found in time, after the engine runs for a long time, the performance of the engine and the damage to a mechanical structure are seriously influenced because the cooling liquid contained in the intake air is caused by the internal leakage of the EGR cooler.
Disclosure of Invention
In order to solve the problems, the invention provides an internal leakage monitoring device and a monitoring method for an EGR cooler, which are used for effectively monitoring whether cooling liquid in a pipeline of an EGR system leaks or not.
The technical scheme adopted by the invention is as follows: an inside monitoring devices that reveals of EGR cooler which characterized in that: including setting up the collector on EGR cooler outlet duct, the intercommunication mouth department of collector and EGR cooler outlet duct is equipped with the sensor that is used for the monitoring to reveal, be equipped with drain pipe and battery valve on the collector, the battery valve sets up between collector and drain pipe for the break-make of control collector pipeline and drain pipe.
Preferably, the collector is perpendicular to the EGR cooler outlet duct.
Preferably, the included angle between the drain pipe and the collector is 45 degrees.
Preferably, the sensor and the battery valve are connected via signal lines to an engine control unit EECU, which is connected to the vehicle instrumentation.
Preferably, the sensor is a liquid level sensor.
A method of monitoring internal leakage of an EGR cooler, characterized by: when the system does not detect the leakage of the EGR cooler, the sensor is disconnected, the electromagnetic valve is disconnected, the valve plate of the electromagnetic valve is positioned at a set position, the drain pipe is closed, and the fault lamp of the instrument is turned off;
the system detects that the EGR cooler leaks, the collector collects and stores water, when the water capacity in the collector reaches a set height, the sensor is switched on, the engine control unit EECU receives signals, the control electromagnetic valve is switched on, the electromagnetic valve plate is attracted, the drain pipe is communicated with the collector, and meanwhile, signals are sent to the whole vehicle instrument, and a fault state of a driver is prompted through the fault alarm lamp.
Preferably, the electromagnetic valve is switched on, after a set time t, the moisture in the collector is completely discharged, the sensor is switched off, the electromagnetic valve is switched off, the valve plate of the electromagnetic valve is reset, the drain pipe is closed, and the fault lamp is turned off.
The beneficial effects obtained by the invention are as follows: and a cooling liquid collector and an electromagnetic valve are additionally arranged on an air outlet pipeline of the EGR cooler, and the electromagnetic valve is connected with an Engine Electronic Control Unit (EECU). The engine electronic control unit EECU prompts a driver by judging whether the inside of the EGR cooler leaks or not, and prevents serious damage to an engine and a vehicle caused by the leakage inside the EGR cooler.
Drawings
FIG. 1 is a schematic diagram of an engine EGR system connection;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a control logic diagram of an EGR cooler internal leakage monitoring device;
reference numerals: 1. an engine; 2. an EGR cooler; 3. an EGR cooler air outlet pipe; 4. a collector; 41. a sensor; 42. a drain pipe; 5. an electromagnetic valve; 51. a battery valve plate; 6. an engine electronic control unit EECU; 7. vehicle instrument.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1, the EGR valve takes gas from the engine exhaust manifold, passes through the EGR valve, is cooled by the EGR cooler 2, flows out of the EGR cooler 2, enters the engine intake pipe, is mixed with fresh air in the engine 1, and participates in combustion. The internal leakage monitoring device of the EGR cooler is arranged on the air outlet pipe 3 of the EGR cooler and used for monitoring the internal leakage condition of the EGR cooler 2 in real time and preventing the engine 1 and the vehicle from being seriously damaged due to the internal leakage of the EGR cooler 2.
As shown in fig. 2, the internal leakage monitoring device for the EGR cooler of the present invention includes a collector 4 disposed on an outlet pipe 3 of the EGR cooler, a sensor 41 for monitoring leakage is disposed at a communication port between the collector 4 and the outlet pipe 3 of the EGR cooler, the collector 4 is provided with a drain pipe 42 and a battery valve 5, and the battery valve 5 is disposed between the collector 4 and the drain pipe 42 for controlling the connection and disconnection of the pipeline of the collector 4 and the pipeline of the drain pipe 42.
In this embodiment, collector 4 perpendicular to EGR cooler outlet duct 3, the contained angle between drain pipe 42 and the collector 4 is 45, and the slope of drain pipe 42 is downward, conveniently collects the moisture of revealing behind EGR cooler 2 in the discharge high temperature waste gas.
In the present embodiment, the sensor 41 and the battery valve 5 are connected to the engine control unit EECU6 through signal lines, the engine control unit EECU6 is connected to the vehicle meter 7, and the sensor 41 is a liquid level sensor for detecting the water level of the collector 4.
As shown in FIG. 3, the invention also provides a method for monitoring the internal leakage of the EGR cooler, when the system does not detect the cooler leakage, the sensor 41 is disconnected, the electromagnetic valve 5 is disconnected, the valve plate 51 of the electromagnetic valve is at the set position, the drain pipe 42 is closed, and the instrument fault lamp is turned off;
when the system detects that the EGR cooler 2 leaks, the collector 4 collects and stores water, when the water capacity in the collector 4 reaches a set height (the actual sensor is arranged at a high position, and the volume of the collector can be designed according to the flow of the exhaust gas outlet of the EGR cooler), the sensor 41 is switched on, the engine control unit EECU6 receives a signal, the control electromagnetic valve 5 is switched on, the electromagnetic valve plate 51 is attracted, the drain pipe 42 is communicated with the collector 4, meanwhile, a signal is sent to the whole vehicle instrument 7, and the fault state of a driver is prompted through the fault alarm lamp. After the set time t, the water in the collector 4 is completely discharged, the sensor 41 is disconnected, the electromagnetic valve 5 is disconnected, the electromagnetic valve plate 51 is reset, the drain pipe 42 is closed, and the fault lamp is turned off.
When the EGR cooler 2 is normal, no liquid exists in the collector 4, and the electromagnetic valve 5 is disconnected; when the inside of the EGR cooler 2 leaks, the liquid exists in the collector 4, the electromagnetic valve 5 is switched on, an electric signal is sent to an engine electronic control unit EECU6, and after the EECU receives a fault signal, the information is forwarded to an indicator lamp of a vehicle instrument 7 for displaying.
The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An inside monitoring devices that reveals of EGR cooler which characterized in that: including setting up the collector on EGR cooler outlet duct, the intercommunication mouth department of collector and EGR cooler outlet duct is equipped with the sensor that is used for the monitoring to reveal, be equipped with drain pipe and battery valve on the collector, the battery valve sets up between collector and drain pipe for the break-make of control collector pipeline and drain pipe.
2. The EGR cooler internal leakage monitoring device according to claim 1, characterized in that: the collector is perpendicular to the EGR cooler outlet duct.
3. The EGR cooler internal leakage monitoring device according to claim 1, characterized in that: the included angle between the drainage pipe and the collector is 45 degrees.
4. The EGR cooler internal leakage monitoring device according to claim 1, characterized in that: the sensor and the battery valve are connected with an engine control unit EECU through signal lines, and the engine control unit EECU is connected with a vehicle instrument.
5. The EGR cooler internal leakage monitoring device according to claim 1, characterized in that: the sensor adopts a liquid level sensor.
6. A method of monitoring internal leakage of an EGR cooler, characterized by: when the system does not detect the leakage of the EGR cooler, the sensor is disconnected, the electromagnetic valve is disconnected, the valve plate of the electromagnetic valve is positioned at a set position, the drain pipe is closed, and the fault lamp of the instrument is turned off;
the system detects that the EGR cooler leaks, the collector collects and stores water, when the water capacity in the collector reaches a set height, the sensor is switched on, the engine control unit EECU receives signals, the control electromagnetic valve is switched on, the electromagnetic valve plate is attracted, the drain pipe is communicated with the collector, and meanwhile, signals are sent to the whole vehicle instrument, and a fault state of a driver is prompted through the fault alarm lamp.
7. A method of monitoring internal leakage of an EGR cooler, characterized by: the electromagnetic valve is switched on, after a set time t, the moisture in the collector is completely discharged, the sensor is switched off, the electromagnetic valve is switched off, the valve plate of the electromagnetic valve is reset, the drain pipe is closed, and the fault lamp is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307456.8A CN111441884A (en) | 2020-04-17 | 2020-04-17 | Internal leakage monitoring device and method for EGR cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307456.8A CN111441884A (en) | 2020-04-17 | 2020-04-17 | Internal leakage monitoring device and method for EGR cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111441884A true CN111441884A (en) | 2020-07-24 |
Family
ID=71653259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010307456.8A Pending CN111441884A (en) | 2020-04-17 | 2020-04-17 | Internal leakage monitoring device and method for EGR cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111441884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834124A (en) * | 2021-01-11 | 2021-05-25 | 潍柴动力股份有限公司 | Internal leakage judgment method for EGR cooler and related device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937043A (en) * | 2012-12-06 | 2013-02-20 | 西华大学 | EGR (Exhaust Gas Recirculation) water filtering tank and water filtering type exhaust gas recirculation system |
| CN104879247A (en) * | 2015-05-27 | 2015-09-02 | 潍柴动力股份有限公司 | EGR (Exhaust Gas Recirculation) cooler liquid leakage processing device |
| CN205370797U (en) * | 2016-01-09 | 2016-07-06 | 潍柴动力股份有限公司 | But EGR device of drainage |
| KR20170062117A (en) * | 2015-11-27 | 2017-06-07 | 한국기계연구원 | Egr apparatus for vehicle improved combustion stability |
| CN107939560A (en) * | 2017-12-28 | 2018-04-20 | 东风商用车有限公司 | EGR cooler integrated with water removal device |
| CN212318185U (en) * | 2020-04-17 | 2021-01-08 | 东风商用车有限公司 | Internal leakage monitoring device of EGR cooler |
-
2020
- 2020-04-17 CN CN202010307456.8A patent/CN111441884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937043A (en) * | 2012-12-06 | 2013-02-20 | 西华大学 | EGR (Exhaust Gas Recirculation) water filtering tank and water filtering type exhaust gas recirculation system |
| CN104879247A (en) * | 2015-05-27 | 2015-09-02 | 潍柴动力股份有限公司 | EGR (Exhaust Gas Recirculation) cooler liquid leakage processing device |
| KR20170062117A (en) * | 2015-11-27 | 2017-06-07 | 한국기계연구원 | Egr apparatus for vehicle improved combustion stability |
| CN205370797U (en) * | 2016-01-09 | 2016-07-06 | 潍柴动力股份有限公司 | But EGR device of drainage |
| CN107939560A (en) * | 2017-12-28 | 2018-04-20 | 东风商用车有限公司 | EGR cooler integrated with water removal device |
| CN212318185U (en) * | 2020-04-17 | 2021-01-08 | 东风商用车有限公司 | Internal leakage monitoring device of EGR cooler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834124A (en) * | 2021-01-11 | 2021-05-25 | 潍柴动力股份有限公司 | Internal leakage judgment method for EGR cooler and related device |
| CN112834124B (en) * | 2021-01-11 | 2022-08-23 | 潍柴动力股份有限公司 | Internal leakage judgment method for EGR cooler and related device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9146176B2 (en) | Thermostat failure judgment device | |
| CN102678396B (en) | The diagnostic method of canister flow | |
| CN101331528B (en) | Gas leakage detection system in gas cooler | |
| CN111577486B (en) | Vehicle carbon tank desorption diagnosis system and method | |
| CN104614186A (en) | Exhaust gas re-circulation inter-cooler heat exchange efficiency test bench and test method | |
| CN212318185U (en) | Internal leakage monitoring device of EGR cooler | |
| CN109441671A (en) | A kind of low diagnostic system and method that pipeline is desorbed of engine | |
| CN207634203U (en) | The condensate water discharging system and engine system of pressure measurement pipeline in EGR | |
| CN211549859U (en) | Range-extended vehicle EGR cooling system and vehicle | |
| CN111441884A (en) | Internal leakage monitoring device and method for EGR cooler | |
| CN113074869A (en) | EGR (exhaust gas Recirculation) cooling liquid leakage detection system and method | |
| CN110872996B (en) | Icing detection method and device for pressure type intake flow sensor | |
| CN113653575B (en) | Engine assembly with low-pressure EGR system and condensate water control strategy | |
| JP3637708B2 (en) | EGR equipment with EGR cooler | |
| CN206554996U (en) | A kind of dual pressure sensor formula gas drive urea injection system | |
| CN112197989A (en) | Fuel cell humidifier test system | |
| CN217110644U (en) | Heat exchanger and engine with function of rapidly monitoring seawater internal leakage | |
| JP2017141776A (en) | Abnormality detection device for intercooler | |
| CN214533197U (en) | Intercooler protection system that leaks | |
| CN212134007U (en) | Automatic leakage measuring equipment for idle speed control valve | |
| CN219197478U (en) | Methanol dual-fuel engine for ship | |
| CN117976945B (en) | Fuel cell system and control method thereof | |
| CN114837838A (en) | Liquid-cooled intercooler leakage online processing method and device and vehicle | |
| CN221485383U (en) | River inlet drain pollution discharge monitoring device | |
| JP2001152861A (en) | Supercharging engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200724 |