CN208171959U - The device of each cylinder mixing uniformity of precise measurement engine - Google Patents
The device of each cylinder mixing uniformity of precise measurement engine Download PDFInfo
- Publication number
- CN208171959U CN208171959U CN201820851324.XU CN201820851324U CN208171959U CN 208171959 U CN208171959 U CN 208171959U CN 201820851324 U CN201820851324 U CN 201820851324U CN 208171959 U CN208171959 U CN 208171959U
- Authority
- CN
- China
- Prior art keywords
- gas
- gas channel
- measurement
- channel
- solenoid valve
- 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
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The utility model discloses a kind of devices of each cylinder mixing uniformity of precise measurement engine, including：Multiple to take gas channel, mixed gas described can take gas channel to enter device after taking gas from the measurement point of motor intake manifold or enmgine exhaust by multiple；Multiple solenoid valves, each solenoid valve setting take on gas channel each；ECU controller, ECU controller are connect with each solenoid valve respectively, carry out on-off gas control system by control electromagnetic valve switch；Sprue takes gas channel to be connected to multiple respectively, and mixed gas is able to enter in sprue after passing through solenoid valve；Lambda sensor Measurement channel, is connected to sprue；And lambda sensor, it is arranged in lambda sensor Measurement channel, lambda sensor is connected with ECU controller, so that ECU controller obtains mixed gas concentration by measurement oxygen concentration.The device measurement accuracy of the utility model is high, and the on-off for taking gas channel can be automatically controlled by ECU controller.
Description
Technical field
The utility model is about a kind of device for measuring each cylinder mixing uniformity of engine, especially with regard to a kind of accurate
Measure the device of each cylinder mixing uniformity of engine.
Background technique
The noxious emission of engine is a main source for causing atmosphere pollution, important with environmental protection problem
Property increase increasingly, reduce engine noxious emission and improve this target of economy become the world today on development of engine one
A important directions.Engine each cylinder mixing uniformity, including fuel mixing uniformity, EGR mixing uniformity etc., to engine
Performance and discharge have particularly important influence.
Currently, each cylinder mixing uniformity of measurement fuel and EGR mixing uniformity are mainly by air inlet and exhaust in the market
In CO2It measures and evaluates, be primarily present following disadvantage：
(1) it needs to measure CO2, it is therefore desirable to high-precision exhaust apparatus, cost are very high；
(2) discharge measuring channel is generally fewer, generally only 2 channels, therefore in 6 cylinders or more multicylinder engine
In, need the discharge measuring CO of each cylinder of manual switching2Channel, it is very inconvenient.
For this reason, it may be necessary to which a kind of structure is simple, the device of low cost, high-precision each cylinder mixing uniformity of measurement seems especially
It is important.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of devices of each cylinder mixing uniformity of precise measurement engine, can
Utilize lambda sensor and each cylinder mixing uniformity of solenoid valve precise measurement, at low cost and easy switching.
To achieve the above object, the utility model provides a kind of dress of each cylinder mixing uniformity of precise measurement engine
It sets, including：It is multiple to take gas channel, after mixed gas takes gas from the measurement point of motor intake manifold or enmgine exhaust
Described gas channel can be taken to enter device by multiple；Multiple solenoid valves, each solenoid valve setting take on gas channel each；
ECU controller, ECU controller are connect with each solenoid valve respectively, carry out on-off gas control system by control electromagnetic valve switch；Mainstream
Road takes gas channel to be connected to multiple respectively, and mixed gas is able to enter in sprue after passing through solenoid valve；Lambda sensor measurement
Channel is connected to sprue；And lambda sensor, it is arranged in lambda sensor Measurement channel, lambda sensor and ECU are controlled
Device is connected, so that ECU controller obtains mixed gas concentration by measurement oxygen concentration.
In a preferred embodiment, taking the quantity of gas channel and solenoid valve is eight.
In a preferred embodiment, one end of solenoid valve is provided with air inlet nut connector, and the other end of solenoid valve is set
It is equipped with connecting flange, for being connected with gas channel is taken.
In a preferred embodiment, when carrying out air inlet analysis, air inlet is arranged at the inlet manifold of each cylinder respectively
Measurement point, each air inlet measurement point are connected with gas channel is taken respectively, to acquire mixed gas into device.
In a preferred embodiment, when analysis is exhausted, the arranging exhaust air at the exhaust manifold of each cylinder respectively
Measurement point, each exhaust measurement point are connected with gas channel is taken respectively, to acquire the mixed gas after burning into device.
Compared with prior art, the device of each cylinder mixing uniformity of precise measurement engine according to the present utility model has
Following advantage：(1) mixing uniformity is measured using lambda sensor, cost is more much lower than discharge instrument.(2) it is surveyed using lambda sensor
Oxygen concentration is measured to obtain mixed gas concentration, measurement accuracy is high.(3) on-off that gas channel is respectively taken using solenoid valve control, due to
The on-off for taking gas channel can be automatically controlled by ECU controller, exempted and needed hand into test bay during engine operation
Dynamic control on-off.
Detailed description of the invention
Fig. 1 is showing according to the device of each cylinder mixing uniformity of precise measurement engine of one embodiment of the utility model
It is intended to.
Fig. 2 is the measuring principle schematic diagram according to the device of one embodiment of the utility model.
Main appended drawing reference explanation：
1- takes gas channel, 2- solenoid valve, 21- air inlet nut connector, 22- connecting flange, 3-ECU controller, 4- sprue,
5- lambda sensor Measurement channel, 6- lambda sensor, the device of each cylinder mixing uniformity of 200- precise measurement engine, 201- start
Machine EGR mixer, 202- fuel mixer, 203- inlet manifold, 204- inlet manifold, 205- air inlet measurement point, 206- exhaust
Manifold, 207- exhaust measurement point, 208- inlet manifold's measuring point, 209- exhaust main measuring point, 210-EGR connecting tube, 211- start
Machine.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, according to each cylinder mixing uniformity of precise measurement engine of the preferred embodiments of the present invention
Device, including：It is multiple take gas channel 1, multiple solenoid valves 2, ECU controller 3, sprue 4, lambda sensor Measurement channel 5 and
Lambda sensor 6.Wherein, mixed gas can lead to after taking gas from the measurement point of motor intake manifold or enmgine exhaust
Cross it is multiple take gas channel 1 enter device.Each setting of solenoid valve 2 takes on gas channel 1 each.ECU controller 3 respectively with it is each
Solenoid valve 2 connects, and carries out on-off gas control system by control electromagnetic valve switch.Sprue 4 takes gas channel 1 to be connected to multiple respectively,
Mixed gas is able to enter in sprue 4 after passing through solenoid valve 2.Lambda sensor Measurement channel 5 is connected to sprue 4, passes through master
The mixed gas of runner 4 is able to enter in lambda sensor Measurement channel 5.Lambda sensor 6 is arranged in lambda sensor Measurement channel 5
In, lambda sensor 6 is connected with ECU controller 3, so that ECU controller 3 is dense to obtain mixed gas by measurement oxygen concentration
Degree.
In above scheme, taking the quantity of gas channel 1 and solenoid valve 2 is eight, and eight take gas channel 1 to be symmetrically arranged at
The two sides of lambda sensor Measurement channel 5.One end of solenoid valve 2 is provided with air inlet nut connector 21, the other end setting of solenoid valve 2
There is connecting flange 22, for being connected with gas channel 1 is taken.
Fig. 2 elaborates the measuring principle of the device 200 of the utility model, as shown in Fig. 2, engine EGR mixer 201 or
Fuel mixer 202 mixes in inlet manifold 203 with air.The mixed effect of the mixer is assessed, can be analyzed by air inlet
With each cylinder mixing uniformity of exhaust gas analysis, to assess the mixed effect of mixer.When carrying out air inlet analysis, respectively in each cylinder
Inlet manifold 204 at arrange air inlet measurement point 205, each take gas channel to be separately connected each air inlet measurement point 205 and air inlet
General pipeline measuring point 208, to acquire mixed gas into device.When analysis is exhausted, respectively at the exhaust manifold 206 of each cylinder
Arranging exhaust air measurement point 207 takes gas channel to be separately connected each exhaust measurement point 207 and exhaust main measuring point 209, each to adopt
Mixed gas after collection burning is into device.
In conclusion the device of the utility model measures mixing uniformity using lambda sensor, cost is lower than discharge instrument
Much.And oxygen concentration is measured using lambda sensor to obtain mixed gas concentration, measurement accuracy is high.In addition, using solenoid valve
Control respectively takes the on-off in gas channel, and the on-off in gas channel is taken due to that can automatically control by ECU controller, is exempted in engine
Enter test bay during operation to need to manually control on-off.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (5)
1. a kind of device of each cylinder mixing uniformity of precise measurement engine, which is characterized in that described device includes：
It is multiple to take gas channel, mixed gas from the measurement point of motor intake manifold or enmgine exhaust take gas after can
Described gas channel is taken to enter described device by multiple；
Multiple solenoid valves, each solenoid valve setting described take on gas channel each；
ECU controller, the ECU controller are connect with each solenoid valve respectively, are led to by controlling electromagnetic valve switch
It dies control；
Sprue, respectively with it is multiple it is described take gas channel to be connected to, the mixed gas pass through the solenoid valve after be able to enter
In the sprue；
Lambda sensor Measurement channel is connected to the sprue；And
Lambda sensor is arranged in the lambda sensor Measurement channel, and the lambda sensor is connected with the ECU controller
It connects, so that the ECU controller obtains the mixed gas concentration by measurement oxygen concentration.
2. device as described in claim 1, which is characterized in that described to take the quantity of gas channel and the solenoid valve be eight
It is a.
3. device as claimed in claim 2, which is characterized in that one end of the solenoid valve is provided with air inlet nut connector, institute
The other end for stating solenoid valve is provided with connecting flange, for taking gas channel to be connected with described.
4. device as claimed in claim 3, which is characterized in that when carrying out air inlet analysis, respectively in the inlet manifold of each cylinder
Place's arrangement air inlet measurement point, each air inlet measurement point take gas channel to be connected, are arrived with acquiring mixed gas with described respectively
In described device.
5. device as claimed in claim 3, which is characterized in that when analysis is exhausted, respectively in the exhaust manifold of each cylinder
Locate arranging exhaust air measurement point, each exhaust measurement point takes gas channel to be connected with described respectively, mixed after burning to acquire
Gas is closed into described device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820851324.XU CN208171959U (en) | 2018-06-04 | 2018-06-04 | The device of each cylinder mixing uniformity of precise measurement engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820851324.XU CN208171959U (en) | 2018-06-04 | 2018-06-04 | The device of each cylinder mixing uniformity of precise measurement engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208171959U true CN208171959U (en) | 2018-11-30 |
Family
ID=64365149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820851324.XU Active CN208171959U (en) | 2018-06-04 | 2018-06-04 | The device of each cylinder mixing uniformity of precise measurement engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208171959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834901A (en) * | 2020-06-23 | 2021-12-24 | 拓荆科技股份有限公司 | Gas mixing effect detection device and detection method |
-
2018
- 2018-06-04 CN CN201820851324.XU patent/CN208171959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834901A (en) * | 2020-06-23 | 2021-12-24 | 拓荆科技股份有限公司 | Gas mixing effect detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105673266B (en) | A kind of EGR exhaust measuring method of EGR engine | |
| CN102590537B (en) | System for evaluating catalyst | |
| CN105275558B (en) | Multi channel testing formula diesel engine vent gas detection means | |
| CN207516315U (en) | Non-methane total hydrocarbons detection device | |
| CN106483244A (en) | Flowing reactive experimental rig for SCR catalyst dynamic response test | |
| CN209198422U (en) | A kind of calibration system of mono-/bis-detection of gas warning device | |
| CN110630409B (en) | Gas mixing device and natural gas engine | |
| CN208171959U (en) | The device of each cylinder mixing uniformity of precise measurement engine | |
| CN101514940A (en) | Flow characteristics tester for intake and exhaust system of small gasoline engine and exhaust control method | |
| CN103913308A (en) | Method for detecting response time of position feedback type EGR valve | |
| CN205562503U (en) | Just, formula intelligence automobile exhaust detection device | |
| CN110159458A (en) | Cylinder exhaust recycling distribution measuring system and method | |
| CN207976443U (en) | Improve the detecting system of heavy goods vehicles exhaust contaminant vehicle load measurement precision | |
| CN209387612U (en) | A kind of gas componant testing calibration system | |
| CN106770940A (en) | A kind of check device of gas analysis instrument system | |
| CN110017202B (en) | Urea collector, urea uniformity detection system and method for detecting urea uniformity | |
| CN205330829U (en) | Integrated gas and EGR's blender | |
| CN110579379B (en) | Motor vehicle tail gas flexible sampling system and sampling method | |
| CN209148289U (en) | Measure the experimental rig of each cylinder EGR uniformity | |
| CN105422326A (en) | Fuel gas and EGR (exhaust gas recirculation) integrated mixer | |
| CN205003111U (en) | Automobile exhaust analytic system | |
| CN113357030A (en) | Exhaust gas recirculation EGR rate calculation method | |
| CN207741943U (en) | A kind of detecting system improving light-duty vehicle RDE test measurement precision | |
| CN209430266U (en) | A kind of secondary air-supply device for engine rig test | |
| CN204572219U (en) | For the simple and easy closed-loop control device of EGR valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |