CN205714485U - A kind of supercharged diesel engine realizing EGR technology - Google Patents
A kind of supercharged diesel engine realizing EGR technology Download PDFInfo
- Publication number
- CN205714485U CN205714485U CN201620361178.3U CN201620361178U CN205714485U CN 205714485 U CN205714485 U CN 205714485U CN 201620361178 U CN201620361178 U CN 201620361178U CN 205714485 U CN205714485 U CN 205714485U
- Authority
- CN
- China
- Prior art keywords
- egr
- exhaust
- branch road
- diesel engine
- compressor
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Supercharger (AREA)
Abstract
The purpose of this utility model is to provide a kind of supercharged diesel engine realizing EGR technology, including diesel engine, turbocharger, EGR turbocharger, diesel engine connects inlet manifold and exhaust main respectively, the compressor of turbocharger connects inlet manifold by the first air inlet branch road, the turbine of turbocharger connects exhaust main by first exhaust branch road, described EGR turbocharger includes EGR compressor and EGR turbine, first exhaust branch road is respectively communicated with second exhaust branch road, 3rd exhaust branch and the 4th exhaust branch, second exhaust branch road connection air, 3rd exhaust branch connection EGR turbine, 4th exhaust branch connection EGR compressor, EGR compressor is by the second air inlet branch road connection inlet manifold.This utility model passes through a less turbocharger, and aerofluxus carries out supercharging, and the pressure of such aerofluxus is higher than the pressure of air inlet, and aerofluxus can flow in air inlet pipe, thus realize EGR.
Description
Technical field
The utility model relates to a kind of diesel engine, specifically diesel engine intake and exhaust and control device.
Background technology
Along with the marine diesel restriction increasingly stringent to discharge, especially NOx emission, reduce NOx row
Put the most very urgent.For current emission-reduction technology, EGR technology is either gone back in the effect reduced discharging
It is on cost, to have the biggest advantage, has been widely recognized.So-called waste gas recirculation (EGR) be by
A part of waste gas in aerofluxus is incorporated into air inlet pipe, enters cylinder and again participate in burning after mixing with fresh air
Process, reduce diesel engine in-cylinder combustion temperature, and then Diesel NOx discharge can be reduced.But it is real
Existing EGR also has an a lot of difficult problem, and for supercharged diesel engine, the pressure at expulsion of diesel engine is less than
Admission pressure, this results in and can not introduce exhaust gas in air inlet pipe under field conditions (factors), and this is accomplished by using
Some householder methods realize EGR.Someone is by exitting to air after diesel engine compressor, reduce into
Atmospheric pressure, introduces exhaust gas in air inlet pipe, though this method can realize EGR, but to energy
A kind of waste, is difficult to promote.
Summary of the invention
The purpose of this utility model is the pressure providing the pressure making aerofluxus to be higher than air inlet, thus makes aerofluxus energy
Enough flow to a kind of supercharged diesel engine realizing EGR technology of air inlet pipe.
The purpose of this utility model is achieved in that
A kind of supercharged diesel engine realizing EGR technology of this utility model, including diesel engine, turbocharger,
Diesel engine connects inlet manifold and exhaust main respectively, and the compressor of turbocharger passes through the first air inlet branch road
Connecting inlet manifold, the turbine of turbocharger connects exhaust main by first exhaust branch road, it is characterized in that:
Also include that EGR turbocharger, described EGR turbocharger include EGR compressor and EGR turbine, the
One exhaust branch is respectively communicated with second exhaust branch road, the 3rd exhaust branch and the 4th exhaust branch, second exhaust
Branch road connection air, the 3rd exhaust branch connection EGR turbine, the 4th exhaust branch connection EGR compressor,
EGR compressor, by the second air inlet branch road connection inlet manifold, the first air inlet branch road is installed air intake intercooler
With inlet air flow gauge, the second air inlet branch road is installed EGR flow gauge, the 4th exhaust branch is installed EGR cold
But device and pressurizer tank.
A kind of supercharged diesel engine realizing EGR technology of this utility model can also include:
1, exhaust discharge valve is installed on second exhaust branch road, the 3rd exhaust branch is installed EGR turbine control valve,
EGR compressor control valve is installed on the 4th exhaust branch, the second air inlet branch road is installed EGR control valve.
2, exhaust discharge valve, EGR turbine control valve, EGR compressor control valve and EGR control valve all connect
Connect the ECU control list gathering turbo charger speed signal, diesel load signal, diesel engine speed signal
Unit.
Advantage of the present utility model is: this utility model passes through a less turbocharger, to aerofluxus
Carrying out supercharging, the pressure of such aerofluxus is higher than the pressure of air inlet, and aerofluxus can flow in air inlet pipe, thus real
Existing EGR.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and this utility model be described in more detail:
In conjunction with Fig. 1, this utility model includes compressor 1, exhaust gas turbine 2, air intake intercooler 3, inlet air flow
Gauge 4, inlet manifold 5, diesel engine 6, EGR flow gauge 7, exhaust discharge valve 8, EGR turbine control valve
9, EGR compressor control valves 10, cooler for recycled exhaust gas 11, exhaust main 12, pressurizer tank 13, EGR turbine
14, EGR compressors 15, EGR control valve 16, supercharger speed signal 17, ECU control unit 18, bavin
Oil machine tach signal 19, diesel load signal 20 and each connecting line etc..
Compressor 1, air intake intercooler 3, inlet air flow gauge 4 and inlet manifold 5 constitute the first air inlet and prop up
Road；Exhaust main 12 and exhaust gas turbine 2 connect composition first exhaust branch road by pipeline.
In addition to first exhaust branch road, three exhaust branch are also had, including by exhaust discharge valve after exhaust main 12
The 8 second exhaust branch roads controlled, are directly discharged to waste gas in atmospheric environment；By EGR turbine control valve 9
The 3rd exhaust branch controlled, whether the switch and the EGR turbine 14 that control Zhe Ci road work；Pressed by EGR
The 4th exhaust branch that mechanism of qi control valve 10 controls, controls switch and EGR compressor 15 work on Zhe Ci road
Whether make.Second also controlled by EGR control valve 16 after EGR compressor 15 and between inlet manifold 5
Air inlet branch road, this branch road is the last item branch road realizing EGR, and aerofluxus flows to bavin by the second air inlet branch road
Oil machine 6, thus realize EGR.
The control program of this device is as follows:
ECU control unit 18 gathers turbo charger speed signal 17, diesel engine speed signal 19 and bavin
Oil machine load signal 20, MAP these three signal and ECU control unit 18 set in advance is made to compare
Relatively judge:
(1) when under the state that diesel engine 6 is in low speed Smaller load, exhaust discharge valve 8, EGR turbine control valve
9, EGR compressor control valve 10 and EGR control valve 16 are in closed mode, now do not have EGR.
(2) when diesel engine 6 is in middle high rotating speed and middle high load capacity, turbo charger speed letter is looked first at
Whether numbers 17 exceed limit value, if it exceeds then open exhaust discharge valve 8, is bled off by portion discharge, if
It is not above limit value then exhaust discharge valve 8 and is still in closed mode；Later on EGR compressor controls
Valve 10, pressurizer tank 13 is full of by final vacuum after a while, is opening EGR turbine control valve 9, is finally opening
Open EGR control valve 16, the MAP set according to ECU control unit 18, the aperture to each valve
It is controlled, thus reaches the flow wanted, it is achieved target EGR rate.
This utility model utilizes an extra turbocharger that aerofluxus carries out supercharging, the pressure of such aerofluxus
Higher than the pressure of air inlet, aerofluxus can flow to air inlet pipe, it is achieved EGR.The EGR turbine of this supercharger and EGR
The entrance of compressor is all connected on exhaustor, and has a control valve on every pipeline, and its effect is
On the one hand control the switch of pipeline, on the other hand control the extraction flow in pipeline, according to ECU control
Diesel engine speed signal and diesel load signal that unit receives carry out concrete action.EGR control valve
It is arranged between inlet manifold and EGR compressor, controls the extraction flow in pipeline.Exhaust discharge valve
Switch is controlled by turbo charger speed signal, when supercharger speed is higher than allowed maximum (top) speed, opens
Open exhaust discharge valve, to ensure safety, otherwise be then closed.
This utility model device includes compressor, exhaust gas turbine, air intake intercooler, charge flow rate
Meter, inlet manifold, exhaust main, diesel engine body, EGR flow gauge, exhaust discharge valve, EGR turbine control
Valve processed, EGR compressor control valve, cooler for recycled exhaust gas, pressurizer tank, ECU control unit, EGR turbine, EGR
Compressor and EGR control valve etc..Compressor, air intake intercooler, inlet air flow gauge and inlet manifold's group
Become the first air inlet branch road；Exhaust main and exhaust gas turbine connect composition first exhaust branch road by pipeline.Row
In addition to first exhaust branch road, three exhaust branch are also had, including the controlled by exhaust discharge valve after gas house steward
Two exhaust branch, are directly discharged to waste gas in atmospheric environment；The 3rd row controlled by EGR turbine control valve
Whether are gas branch road, the switch on control Zhe Ci road and EGR turbine；Controlled by EGR compressor control valve
The 4th exhaust branch, control the switch on Zhe Ci road and whether EGR compressor work.After EGR compressor
And also having the second air inlet branch road controlled by EGR control valve between inlet manifold, this branch road realizes EGR
The last item branch road, aerofluxus flows to diesel engine by the second air inlet branch road, thus realizes EGR.
The control program of this device is as follows:
ECU control unit gathers turbo charger speed signal, diesel engine speed signal and diesel load
Signal, makes comparisons these three signal with the MAP set in advance of diesel engine and judges:
(1) when under the state that diesel engine is in low speed Smaller load, exhaust discharge valve, EGR turbine control valve,
EGR compressor control valve and EGR control valve are in closed mode, now do not have EGR.
(2) when diesel engine is in middle high rotating speed and middle high load capacity, whether turbo charger speed is looked first at
Exceed limit value, if it exceeds then open exhaust discharge valve, portion discharge is bled off, without exceeding limit
Definite value then exhaust discharge valve is still in closed mode；Later on EGR compressor control valve, when crossing one section
Between final vacuum pressurizer tank is full of, open EGR turbine control valve, finally open EGR control valve, according to
The MAP that ECU control unit sets, is controlled the aperture of each valve, thus reach to want
Flow, it is achieved target EGR rate.
A kind of supercharged diesel engine of this utility model realizes the device of EGR technology, including compressor, exhaust gas turbine,
Air intake intercooler, inlet air flow gauge, inlet manifold, exhaust main, diesel engine, EGR flow gauge, aerofluxus
Vent valve, EGR turbine control valve, EGR compressor control valve, cooler for recycled exhaust gas, pressurizer tank, ECU control
Unit, EGR turbine, EGR compressor and EGR control valve etc..Wherein, compressor inlet communicates with air,
Air, by after compressor pressure, cools down in air intake intercooler, then passes through inlet air flow gauge total through air inlet
Pipe enters diesel engine, and waste gas flows out through exhaust main, and one side is by exhaust gas turbine expansion work, exhaust gas turbine
Outlet communicates with atmospheric environment, and another side is then to have flowed to three directions, and one is direct by exhaust discharge valve
Being put in atmospheric environment, two is to flow to EGR turbine by EGR turbine control valve do work, and eventually flows to air
In environment, three is to flow to EGR compressor by EGR compressor control valve, cooler for recycled exhaust gas and pressurizer tank,
Eventually pass through EGR control valve and EGR flow gauge flows to inlet manifold, come back in diesel engine.
Diesel exhaust flows to the turbine of turbocharger through tee tube one road, and a road flows to realize EGR's
In pipeline, atmospheric environment, EGR turbine and three directions of EGR compressor are flowed to the most respectively.
The waste gas flow direction realizes in the pipeline of EGR, and in order to prevent turbocharger from exceeding the speed limit, being provided with one will be useless
Gas is directly discharged to a pipeline of atmospheric environment, is controlled the switch of this pipeline by exhaust discharge valve.
The waste gas flow direction realizes, in the pipeline of EGR, flowing to this road of EGR turbine, by EGR turbine control valve
Control the switch of this pipeline, when diesel engine is in underload, closes EGR turbine control valve, there is no EGR,
When diesel engine is in middle high load capacity, open EGR turbine control valve, it is achieved EGR.
The waste gas flow direction realizes, in the pipeline of EGR, flowing to this road of EGR compressor, by EGR compressor control
Valve processed controls the switch on this road, closes EGR compressor control valve when diesel engine is in underload, works as diesel oil
When machine is in middle high load capacity, open EGR compressor control valve, cool down through cooler for recycled exhaust gas, then surely
In pressure case, guarantee enters stablizing of the pressure at expulsion of EGR compressor.
Enter the waste gas after the pressurization of EGR compressor, flow to air inlet through EGR control valve and EGR flow gauge total
Pipe, EGR control valve is as desired by switch Angle ambiguity exhaust gas flow.
Claims (3)
1. realizing a supercharged diesel engine for EGR technology, including diesel engine, turbocharger, diesel engine divides
Not Lian Jie inlet manifold and exhaust main, the compressor of turbocharger by first air inlet branch road connect air inlet
House steward, the turbine of turbocharger connects exhaust main by first exhaust branch road, it is characterized in that: also include
EGR turbocharger, described EGR turbocharger includes EGR compressor and EGR turbine, first exhaust
Branch road is respectively communicated with second exhaust branch road, the 3rd exhaust branch and the 4th exhaust branch, and second exhaust branch road is even
Logical air, the 3rd exhaust branch connection EGR turbine, the 4th exhaust branch connection EGR compressor, EGR presses
Mechanism of qi, by the second air inlet branch road connection inlet manifold, the first air inlet branch road is installed air intake intercooler and air inlet
Effusion meter, on the second air inlet branch road install EGR flow gauge, on the 4th exhaust branch install cooler for recycled exhaust gas and
Pressurizer tank.
A kind of supercharged diesel engine realizing EGR technology the most according to claim 1, is characterized in that: the
Exhaust discharge valve is installed on two exhaust branch, the 3rd exhaust branch is installed EGR turbine control valve, the 4th row
EGR compressor control valve is installed on gas branch road, the second air inlet branch road is installed EGR control valve.
A kind of supercharged diesel engine realizing EGR technology the most according to claim 2, is characterized in that: row
Gas vent valve, EGR turbine control valve, EGR compressor control valve and EGR control valve are all connected with gathering turbine
Supercharger speed signal, diesel load signal, the ECU control unit of diesel engine speed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361178.3U CN205714485U (en) | 2016-04-26 | 2016-04-26 | A kind of supercharged diesel engine realizing EGR technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361178.3U CN205714485U (en) | 2016-04-26 | 2016-04-26 | A kind of supercharged diesel engine realizing EGR technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714485U true CN205714485U (en) | 2016-11-23 |
Family
ID=57294284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620361178.3U Expired - Fee Related CN205714485U (en) | 2016-04-26 | 2016-04-26 | A kind of supercharged diesel engine realizing EGR technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781810A (en) * | 2016-04-26 | 2016-07-20 | 哈尔滨工程大学 | Supercharged diesel engine achieving EGR technology and supercharged diesel engine EGR achieving method |
| CN106762242A (en) * | 2017-01-23 | 2017-05-31 | 哈尔滨工程大学 | A kind of supercharged diesel engine EGR based on assisted turbocharger realizes device |
-
2016
- 2016-04-26 CN CN201620361178.3U patent/CN205714485U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781810A (en) * | 2016-04-26 | 2016-07-20 | 哈尔滨工程大学 | Supercharged diesel engine achieving EGR technology and supercharged diesel engine EGR achieving method |
| CN106762242A (en) * | 2017-01-23 | 2017-05-31 | 哈尔滨工程大学 | A kind of supercharged diesel engine EGR based on assisted turbocharger realizes device |
| CN106762242B (en) * | 2017-01-23 | 2019-05-21 | 哈尔滨工程大学 | A kind of supercharged diesel engine EGR realization device based on assisted turbocharger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104487692B (en) | The control device of internal combustion engine | |
| CN108131221A (en) | Gasoline engine gas recirculation system and control method | |
| US9410490B2 (en) | Fuel selection system and method for dual fuel engines | |
| CN108952982A (en) | Control method of the diesel engine with high pressure exhaust gas recycling booster anti-surge | |
| CN203499859U (en) | Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus | |
| CN105673543A (en) | Control method for preventing turbocharger surges | |
| CN103470408A (en) | EGR (Exhaust Gas Recirculation) system used for marine medium-speed diesel engine | |
| CN107237686A (en) | Realize two-stage consecutive pressurization system structure and control method that overall performance improves | |
| CN101581263A (en) | Intake manifold configuration and automobile internal combustion engine with the same | |
| CN105134418A (en) | Engine with high-pressure exhaust gas recirculation (EGR) device and control method for high-pressure EGR device | |
| CN107448277A (en) | Variable cross section turbine consecutive pressurization system structure and control method | |
| CN205714485U (en) | A kind of supercharged diesel engine realizing EGR technology | |
| WO2013148046A1 (en) | Methods and systems for an engine | |
| CN107060989B (en) | Three stage of the three turbocharger sequential turbocharging device and its control method of function are realized with EGR | |
| CN105781810B (en) | A kind of supercharged diesel engine for realizing EGR technology and supercharged diesel engine EGR implementation methods | |
| CN109339938A (en) | Three condition two-stage consecutive pressurization system and its control method | |
| CN210343538U (en) | Medium-pressure exhaust gas recirculation system based on two-stage turbocharger | |
| CN105443273A (en) | High-pressure gas source based single-cylinder diesel engine EGR device and control method | |
| CN205297792U (en) | V type gas engine's air intake system | |
| CN110173377B (en) | Gas pressure feedback system of gas engine | |
| CN203655418U (en) | EGR (exhaust gas recirculation) system for marine medium-speed diesel engine | |
| CN206816354U (en) | A kind of turbocharged engine system | |
| CN110513720A (en) | A kind of bifuel system | |
| CN205370749U (en) | Adjustable diesel engine order pressure intensifying structure | |
| CN210343536U (en) | Medium-pressure exhaust gas low-pressure side introducing system based on two-stage turbocharger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20190426 |