CN207212518U - A kind of venturi arrangement for egr system - Google Patents
A kind of venturi arrangement for egr system Download PDFInfo
- Publication number
- CN207212518U CN207212518U CN201720982582.7U CN201720982582U CN207212518U CN 207212518 U CN207212518 U CN 207212518U CN 201720982582 U CN201720982582 U CN 201720982582U CN 207212518 U CN207212518 U CN 207212518U
- Authority
- CN
- China
- Prior art keywords
- pressure
- hole
- pressure port
- venturi tube
- temperature 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.)
- Active
Links
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
What the technical solution of the utility model was realized in：A kind of venturi arrangement for egr system, it is made up of Venturi tube, temperature sensor, pressure sensor, differential pressure pickup, it is characterised in that：The cooling water hole of Venturi tube is arranged in the position of lower section between positive pressure port and negative pressure port, temperature sensor hole, pressure sensor hole, positive pressure port and negative pressure port parallel arrangement, temperature sensor hole, pressure sensor hole, positive pressure port and negative pressure port opening direction upward, temperature sensor insertion temperature sensor is fixedly connected in hole with Venturi tube, pressure sensor insertion pressure sensor is fixedly connected in hole with Venturi tube, and differential pressure pickup is arranged in positive pressure port and the top of negative pressure port is fixedly connected with Venturi tube.It can overcome the disadvantages that the deficiency of venturi tube structure measurement accuracy, and measuring method is simple, be the venturi arrangement of a kind of integrated pressure, pressure difference, temperature sensor.
Description
Technical field
A kind of venturi arrangement for egr system is the utility model is related to, applied to diesel engine egr system,
It is the Venturi tube assembly of a kind of integrated pressure sensor, temperature sensor, differential pressure pickup, the Abgasgesetz that is particularly suitable for use in is tight
Lattice, the large diesel engine of high EGR measurement accuracy demand.
Background technology
Today's society, problem of environmental pollution become increasingly conspicuous, and the environmental hazard that Vehicle Emission Pollution is brought receives significant attention,
The pressure of environmental protection make it that the Abgasgesetz of various countries is more and more stricter, and therefore, major diesel engine enterprise of the world is not all turning off
Hair and lifting emission control strategy.The emission of diesel engine is mainly nitrogen oxides and hydrocarbon, wherein, nitrogen oxides is made
For one of main noxious emission attention.
EGR technology（EGR Technology）It is one of current major measure for reducing engine nox emission, is
Meet the key technique of the Abgasgesetz of Europe six, but EGR technology is to be realized using sacrificing engine performance as cost, therefore it is required
The ER EGR Rate under each operating point, and EGR rate are strictly controlled, is avoided as far as possible while discharged nitrous oxides are reduced
To the adverse effect of the factors such as engine power.Therefore, it is necessary to obtain EGR rate as accurate as possible, Venturi tube has fluid
The advantages that resistance is small, measurement accuracy is high, stability is good, EGR rate can accurately be measured.
A kind of Venturi tube of patent CN201310548324 Jiangyin City Throttling Device Manufacture Co., Ltd. application, describes one
Kind of venturi tube structure, by before and after traditional Venturi tube setting by the preceding measurement pipe accurately processed and after measure
Pipe, rectifier is set in preceding measurement pipe in addition, measurement accuracy is improved, reaches using standard；CN201320586444 Jiangsu four
Up to the supercharged diesel engine Venturi tube ERG of dynamic power machine Group Co., Ltd application, solves high pressure EGR system
EGR gas can not enter air inlet pipe under Part load, the problem of waste gas refluence be present, realize under full working scope scope compared with
Good EGR rate；Prior art measurement accuracy deficiency, measuring method are complicated.
The content of the invention
The purpose of this utility model is to provide a kind of venturi arrangement for egr system, and it can overcome the disadvantages that Venturi tube
The deficiency of structure measurement precision, measuring method is simple, is the venturi arrangement of a kind of integrated pressure, pressure difference, temperature sensor.
What the technical solution of the utility model was realized in：A kind of venturi arrangement for egr system, by literary mound
In pipe, temperature sensor, pressure sensor, differential pressure pickup composition, it is characterised in that：The cooling water hole of Venturi tube is arranged in
The position of lower section, temperature sensor hole, pressure sensor hole, positive pressure port and negative pressure port just between pressure port and negative pressure port
Parallel arrangement, temperature sensor hole, pressure sensor hole, positive pressure port and negative pressure port opening direction upward, TEMP
Device insertion is fixedly connected in temperature sensor hole with Venturi tube, in pressure sensor insertion pressure sensor hole with Venturi tube
It is fixedly connected, differential pressure pickup is arranged in positive pressure port and the top of negative pressure port is fixedly connected with Venturi tube.
Good effect of the present utility model is that pressure, pressure difference, temperature sensor are integrated in Venturi tube by it, structure letter
It is single, small volume, measurement accuracy height.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model.
Fig. 2 is sectional structure chart of the present utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：As shown in Figure 1, 2, a kind of text for egr system
Venturi device, it is made up of Venturi tube 1, temperature sensor 2, pressure sensor 3, differential pressure pickup 4, it is characterised in that：Text
The cooling water hole 105 of venturi 1 is arranged in the position of lower section between positive pressure port 103 and negative pressure port 104, temperature sensor hole
101st, pressure sensor hole 102, positive pressure port 103 and negative pressure port 104 are arranged in parallel, temperature sensor hole 101, pressure sensing
Upward, temperature sensor 2 inserts temperature sensor hole 101 to the opening direction in device hole 102, positive pressure port 103 and negative pressure port 104
In be fixedly connected with Venturi tube 1, pressure sensor 3 is inserted in pressure sensor hole 102 and is fixedly connected with Venturi tube 1, is pressed
The top that gap sensor 4 is arranged in positive pressure port 103 and negative pressure port 104 is fixedly connected with Venturi tube 1.
Cooling water hole 105 is arranged between positive pressure port 103, negative pressure port 104, is passed with temperature sensor hole 101, pressure
Sensor hole 102 is arranged in parallel, and cooling water passes through the continuous coo1ing temperature sensor 2 of cooling water hole 104, pressure sensor through cooler
3rd, thermosistor is flowed back to after differential pressure pickup 4.
Temperature sensor 2 is used for the absolute delivery temperature for measuring its adjacent position, and pressure sensor 3 is used to measure its phase
The absolute exhaust pressure of adjacent opening position, so as to the density being vented.Based on the pressure difference measured by differential pressure pickup 4 and exhaust
Density, accurate measurement extraction flow.
Claims (1)
- A kind of 1. venturi arrangement for egr system, by Venturi tube, temperature sensor, pressure sensor, pressure difference sensing Device forms, it is characterised in that：The cooling water hole of Venturi tube is arranged in the position of lower section between positive pressure port and negative pressure port, temperature Spend gauge hole, pressure sensor hole, positive pressure port and negative pressure port parallel arrangement, temperature sensor hole, pressure sensor hole, The opening direction of positive pressure port and negative pressure port upward, is fixed with Venturi tube in temperature sensor insertion temperature sensor hole and connected Connect, pressure sensor insertion is fixedly connected in pressure sensor hole with Venturi tube, differential pressure pickup be arranged in positive pressure port and The top of negative pressure port is fixedly connected with Venturi tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720982582.7U CN207212518U (en) | 2017-08-08 | 2017-08-08 | A kind of venturi arrangement for egr system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720982582.7U CN207212518U (en) | 2017-08-08 | 2017-08-08 | A kind of venturi arrangement for egr system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212518U true CN207212518U (en) | 2018-04-10 |
Family
ID=61818176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720982582.7U Active CN207212518U (en) | 2017-08-08 | 2017-08-08 | A kind of venturi arrangement for egr system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357059A (en) * | 2021-05-31 | 2021-09-07 | 潍柴动力股份有限公司 | Insulation construction, EGR system and car |
-
2017
- 2017-08-08 CN CN201720982582.7U patent/CN207212518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357059A (en) * | 2021-05-31 | 2021-09-07 | 潍柴动力股份有限公司 | Insulation construction, EGR system and car |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018120468A1 (en) | Lcce optimization-based diesel engine calibration method | |
| US9239025B2 (en) | Condensation detection systems and methods | |
| CN205559110U (en) | Measurable exhaust gas flow's venturi | |
| CN101555839A (en) | A method for estimating the oxygen concentration in internal combustion engines | |
| CN102486117A (en) | Turbocharger protecting method of engine provided with lp-egr | |
| EP3851661B1 (en) | Gas mixing apparatus and natural gas engine | |
| CN106351754B (en) | The measurement method of engines exhaust gas recirculation rate | |
| US9500153B2 (en) | Internal combustion engine, in particular gas engine, for a motor vehicle | |
| CN105464848A (en) | Single cylinder diesel EGR device based on high-pressure air two-stage supercharging and control method | |
| CN106017968A (en) | EGR cooler heat exchange efficiency detection system | |
| CN207212518U (en) | A kind of venturi arrangement for egr system | |
| CN207333057U (en) | Integrated form Venturi tube | |
| CN201600244U (en) | Simulation device used for determining car performance at high altitude | |
| CN102829837B (en) | Method, device and system for measurement of oil injection volume | |
| EP4092260A1 (en) | Cast-in-head egr crossover tube with integral venturi tube for flow measurements | |
| CN201851209U (en) | Device for preventing surge of turbocharger for marine diesels | |
| CN207366383U (en) | The back pressure test device of catalyst unit | |
| US10995706B1 (en) | Gas mixing device and a natural gas engine | |
| CN101832862A (en) | System for testing performance of exhaust reflux electric heating turbine | |
| CN205593570U (en) | Air flow meter | |
| CN101825028A (en) | Automobile engine and electric control fuel economizer thereof | |
| CN104895686B (en) | Determine the method and system of the oxygen concentration of engine exhaust | |
| CN205330829U (en) | Integrated gas and EGR's blender | |
| CN105910829B (en) | The Robust PCA method of large-diameter air passage of internal combustion engine | |
| CN208996839U (en) | A kind of gasoline single cylinder engine EGR realization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |