CN106150633B - Exhaust shutter is used to arrange the control method and system of warm management - Google Patents

Exhaust shutter is used to arrange the control method and system of warm management Download PDF

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Publication number
CN106150633B
CN106150633B CN201610770163.7A CN201610770163A CN106150633B CN 106150633 B CN106150633 B CN 106150633B CN 201610770163 A CN201610770163 A CN 201610770163A CN 106150633 B CN106150633 B CN 106150633B
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Prior art keywords
temperature
exhaust
exhaust shutter
warm
row
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CN201610770163.7A
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Chinese (zh)
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CN106150633A (en
Inventor
仲昆
吕志华
张朝阳
李丕茂
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • F02D9/06—Exhaust brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1626—Catalyst activation temperature
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02T10/40—Engine management systems

Abstract

The invention discloses the control methods that a kind of exhaust shutter is used to arrange warm management, including step：1) acquire whether engine or vehicle have braking requirement；2) exhaust shutter is closed if having braking requirement, if performing the next step without braking requirement；3) temperature value for obtaining selective catalytic reducing agent upstream, the row's of sending warm regulatory requirement when the temperature value of acquisition is not more than preset temperature：4) exhaust throttle valve opening is adjusted, keeps exhaust gas instruction energy Q maximum；5) until the temperature value of selective catalytic reducing agent upstream is greater than preset temperature, exhaust shutter restores normal aperture.Exhaust shutter disclosed herein not only has control when braking requirement, also has the application in row's warm management process, by adjusting the aperture of exhaust shutter, and changes the variation of exhaust gas instruction energy Q, to reach the control to row's warm management.The system for being used to arrange warm management the invention also discloses a kind of exhaust shutter.

Description

Exhaust shutter is used to arrange the control method and system of warm management
Technical field
The present invention relates to technical field of engines, in particular to a kind of exhaust shutter is for arranging warm management Control method and system.
Background technique
Existing exhaust shutter only serves exhaust brake function, the only unlatching when there is exhaust brake demand.Existing exhaust Throttle functionality is single, the row's of cannot achieve temperature management function, so that apparatus structure is complicated.
Therefore, the row for how providing a kind of exhaust shutter warms management control method, is that those skilled in the art are current The technical issues that need to address.
Summary of the invention
In view of this, the present invention provides a kind of rows of exhaust shutter to warm management control method, to increase exhaust section Flow the function of valve.The present invention also provides a kind of rows of above-mentioned exhaust shutter to warm management system.
To achieve the above object, the present invention provides the following technical solutions：
A kind of exhaust shutter is used to arrange the control method of warm management, including step：
1) it acquires whether engine or vehicle have braking requirement, exhaust shutter is closed if having braking requirement, if not having Braking requirement then performs the next step；
2) temperature value for obtaining selective catalytic reducing agent upstream, issues when the temperature value of acquisition is not more than preset temperature Row's warm regulatory requirement；
3) exhaust throttle valve opening is adjusted, keeps exhaust gas instruction energy Q maximum, the exhaust gas indicates energy Q=(Mair+ Mfuel)*T4, wherein MairFor air input of engine by air；MfuelFor engine oil mass；T4For the temperature value of upstream of catalytic converter；
4) until the temperature value of selective catalytic reducing agent upstream is greater than preset temperature, exhaust shutter restores just normally opened Degree.
It further include step 31) between step 3) and step 4) in preferred control method：
Within a preset time, the temperature value of selective catalytic reducing agent upstream is not more than preset temperature always, then calculates choosing The rate of temperature change of selecting property catalytic reducer upstream then reduces row when the rate of temperature change is not more than preset temperature change rate Gas throttle valve opening is to minimum.
A kind of exhaust shutter is for arranging warm management system comprising：
For obtaining the electronic control unit of braking requirement and row's warm regulatory requirement；
For detecting the intake flow sensor of air input of engine by air, the intake flow sensor and the electronic control unit Signal connection；
First temperature sensor of selective catalytic reducing agent upstream, first temperature sensor and the electricity are set Control cell signal connection；
The second temperature sensor of upstream of catalytic converter, the second temperature sensor and the electronic control unit are set Signal connection；
Exhaust shutter, the electronic control unit control the exhaust shutter and close when collecting braking requirement；Work as acquisition When warming regulatory requirement to row, exhaust throttle valve opening is adjusted, until the temperature that the first temperature sensor detects is greater than default Value, the exhaust shutter restore initial opening.
Preferably, above-mentioned exhaust shutter is for arranging in warm management system, electronic control unit acquisition engine or Whether vehicle has braking requirement, closes if there is braking requirement then controls the exhaust shutter.
Preferably, above-mentioned exhaust shutter is for arranging in warm management system, when electronic control unit sends row's temperature management After demand, the exhaust throttle valve opening is adjusted, keeps exhaust gas instruction energy Q maximum, until first temperature sensor detects The temperature arrived is greater than preset value；
The exhaust gas indicates energy Q=(Mair+Mfuel)*T4, wherein Mair is air input of engine by air；MfuelFor engine Oil mass；T4The temperature detected for the second temperature sensor.
Preferably, for above-mentioned exhaust shutter for arranging in warm management system, the electronic control unit is also used to calculate the The rate of temperature change that one temperature sensor detects, and compared with preset temperature change rate, when rate of temperature change is no more than default When rate of temperature change, then reduce exhaust throttle valve opening to minimum.
Preferably, above-mentioned exhaust shutter is for arranging in warm management system, and described the of electronic control unit acquisition Temperature value on one sensor is compared with preset value, the row of sending when the temperature value on the first sensor is not more than preset value Warm regulatory requirement.
It can be seen via above technical scheme that the invention discloses the controls that a kind of exhaust shutter is used to arrange warm management Method comprising step：1) acquire whether engine or vehicle have braking requirement；2) exhaust throttle is closed if having braking requirement Valve performs the next step if without braking requirement；3) temperature value for obtaining selective catalytic reducing agent upstream, when the temperature of acquisition The row's of sending warm regulatory requirement when value is no more than preset temperature：4) exhaust throttle valve opening is adjusted, makes exhaust gas instruction energy Q most Greatly；5) until the temperature value of selective catalytic reducing agent upstream is greater than preset temperature, exhaust shutter restores normal aperture.Pass through Above-mentioned control method can be seen that exhaust shutter disclosed herein not only and have control when braking requirement, also have Application in row's warm management process by adjusting the aperture of exhaust shutter, and changes the variation of exhaust gas instruction energy Q, To reach the control to row's warm management.
In addition, the row's of optimizing warm manages the control function under cold car state, it is first rapid with maximum exhaust gas instruction energy Heating post-processing, then post-processing temperature is made to reach target set point.Warming way to manage relative to present row can faster add Heat treatment improves post-processing transformation efficiency, reduces urea crystals risk and discharges the risk to transfinite.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of row's warm management control method of exhaust shutter provided in an embodiment of the present invention；
Fig. 2 is the connection figure of row's warm management system of exhaust shutter provided in an embodiment of the present invention.
Specific embodiment
The row that core of the invention is to provide a kind of exhaust shutter warms management control method, to increase exhaust shutter Function.The row that another core of the invention is to provide a kind of above-mentioned exhaust shutter warms management system.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, disclose the control method that a kind of exhaust shutter is used to arrange warm management in the present invention, wrap with Lower step：
Step S1：Whether interpretation has braking requirement.
Whether acquisition engine or vehicle have braking requirement, since the most fundamental effect of exhaust shutter is to be vented system Dynamic, therefore, it is necessary to first meet automatic demand.
It then needs to close exhaust shutter when there is braking requirement, then be performed the next step when there is no braking requirement.
Step S2：Whether interpretation has thermal management requirements.
The temperature value for obtaining selective catalytic reducing agent upstream, the row of sending when the temperature value of acquisition is not more than preset temperature Warm regulatory requirement；When the temperature value of acquisition is not more than preset temperature, then exhaust shutter restores normal aperture, herein just Normally opened degree is the aperture for being able to maintain that current state stable operation, can be set according to actual demand, is not done herein specific It limits.
Step S3：Adjusting exhaust throttle valve opening keeps Q maximum.
Exhaust gas indicates energy Q=(Mair+Mfuel)*T4, wherein MairFor air input of engine by air；MfuelFor engine oil mass； T4For the temperature value of upstream of catalytic converter.After engine determines, exhaust throttle valve opening is bigger, and air input of engine by air is bigger, And the temperature value of upstream of catalytic converter can be smaller, it can be according to being actually calculated for the maximum value of exhaust gas instruction energy, this It is related with engine.
Step S4：Judge T6Whether T is greater thanThreshold value。
Until the temperature value T of selective catalytic reducing agent upstream after adjusting maximum to Q6Greater than preset temperature TThreshold value, then arrange Gas throttle valve restores normal aperture.
Further, as the temperature value T of selective catalytic reducing agent upstream6No more than preset temperature TThreshold valueIt further include step：
Step S31：Judge whether Δ T is greater than threshold value Δ TThreshold value。
Within a preset time, the temperature value of selective catalytic reducing agent upstream is not more than preset temperature always, then calculates choosing The rate of temperature change of selecting property catalytic reducer upstream then reduces row when the rate of temperature change is not more than preset temperature change rate Gas throttle valve opening is to minimum.And when the rate of temperature change is greater than preset temperature change rate, then continue to judge T6Whether it is greater than TThreshold value, until the temperature value T of selective catalytic reducing agent upstream6Greater than preset temperature TThreshold value, then exhaust shutter restores just normally opened Degree.
When can be seen that exhaust shutter disclosed herein not only by above-mentioned control method and have braking requirement Control also has the application in row's warm management process, by adjusting the aperture of exhaust shutter, and changes exhaust gas instruction energy The variation of Q is measured, to reach the control to row's warm management.
In addition, the row's of optimizing warm manages the control function under cold car state, it is first rapid with maximum exhaust gas instruction energy Heating post-processing, then post-processing temperature is made to reach target set point.Warming way to manage relative to present row can faster add Heat treatment improves post-processing transformation efficiency, reduces urea crystals risk and discharges the risk to transfinite.
As shown in Fig. 2, the invention also discloses a kind of exhaust shutters for arranging warm management system, including electronic control unit 1, intake flow sensor 2, the first temperature sensor 3, second temperature sensor 4 and exhaust shutter 5.
Wherein, electronic control unit 1 is for obtaining braking requirement and row's warm regulatory requirement；Intake flow sensor 2 is for examining Survey the air inflow of engine, intake flow sensor 2 connect with 1 signal of electronic control unit, with guarantee electronic control unit 1 can obtain into The information that mass-air-flow sensor 2 measures；First temperature sensor 3 is arranged in the upstream of selective catalytic reducing agent and detects herein Temperature value, the first temperature sensor 3 is connect with 1 signal of electronic control unit, to guarantee that electronic control unit 1 can be obtained into the first temperature The information that sensor 3 measures；Second temperature sensor 4 is arranged in the upstream of catalytic converter, second temperature sensor 4 with it is automatically controlled 1 signal of unit connection, to guarantee that electronic control unit 1 can obtain the information measured into second temperature sensor 4；Electronic control unit 1 is adopted Control exhaust shutter 5 is closed when collecting braking requirement；When the row of collecting warms regulatory requirement, adjusts exhaust shutter 5 and open Degree, until the temperature that the first temperature sensor 3 detects is greater than preset value, exhaust shutter 5 restores initial opening.
Specifically, electronic control unit 1 acquires whether engine or vehicle have braking requirement, if there is braking requirement then controls institute State the closing of exhaust shutter 5.Exhaust shutter 5 is controlled by the braking requirement of acquisition engine or entirety.
In order to realize the detection to rate of temperature change, which is also used to calculate the first temperature sensor 3 and detects Rate of temperature change when rate of temperature change is not more than preset temperature change rate, then reduce and compared with preset temperature change rate 5 aperture of exhaust shutter is to minimum.
Temperature of the temperature value on first sensor 3 that electronic control unit 1 acquires compared with preset value, on first sensor 3 Angle value issues row's warm regulatory requirement when being not more than preset value, i.e., the temperature value that first sensor 3 at this time measures is lower, needs Carry out heating treatment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (6)

1. the control method that a kind of exhaust shutter is used to arrange warm management, which is characterized in that including step：
1) it acquires whether engine or vehicle have braking requirement, exhaust shutter is closed if having braking requirement, if not braking Demand then performs the next step；
2) temperature value for obtaining selective catalytic reducing agent upstream, the row's of sending temperature when the temperature value of acquisition is not more than preset temperature Thermal management requirements；
3) exhaust throttle valve opening is adjusted, keeps exhaust gas instruction energy Q maximum, the exhaust gas indicates energy Q=(Mair+Mfuel)*T4, Wherein, MairFor air input of engine by air；MfuelFor engine oil mass；T4For the temperature value of upstream of catalytic converter；
4) until the temperature value of selective catalytic reducing agent upstream is greater than preset temperature, exhaust shutter restores normal aperture.
2. control method according to claim 1, which is characterized in that further include step 31) between step 3) and step 4)：
Within a preset time, the temperature value of selective catalytic reducing agent upstream is not more than preset temperature always, then calculates selectivity The rate of temperature change of catalytic reducer upstream then reduces exhaust section when the rate of temperature change is not more than preset temperature change rate Valve opening is flowed to minimum.
3. a kind of exhaust shutter is for arranging warm management system, which is characterized in that including：
For obtaining the electronic control unit of braking requirement and row's warm regulatory requirement；
For detecting the intake flow sensor of air input of engine by air, the intake flow sensor and the electronic control unit signal Connection；
First temperature sensor of selective catalytic reducing agent upstream, first temperature sensor and the automatically controlled list are set First signal connection；
The second temperature sensor of upstream of catalytic converter, the second temperature sensor and the electronic control unit signal are set Connection；
Exhaust shutter, the electronic control unit control the exhaust shutter and close when collecting braking requirement；When the row of collecting When warming regulatory requirement, exhaust throttle valve opening is adjusted, until the temperature that the first temperature sensor detects is greater than preset value, institute It states exhaust shutter and restores initial opening；
After electronic control unit sends row's temperature management demand, the exhaust throttle valve opening is adjusted, makes exhaust gas instruction energy Q most Greatly, until the temperature that first temperature sensor detects is greater than preset value；
The exhaust gas indicates energy Q=(Mair+Mfuel)*T4, wherein Mair is air input of engine by air；MfuelFor engine oil mass； T4The temperature detected for the second temperature sensor.
4. exhaust shutter according to claim 3 is for arranging warm management system, which is characterized in that the electronic control unit Whether acquisition engine or vehicle have braking requirement, close if there is braking requirement then controls the exhaust shutter.
5. exhaust shutter according to claim 3 is for arranging warm management system, which is characterized in that the electronic control unit It is also used to calculate the rate of temperature change that the first temperature sensor detects, and compared with preset temperature change rate, works as temperature change When rate is not more than preset temperature change rate, then reduce exhaust throttle valve opening to minimum.
6. exhaust shutter according to claim 3 is for arranging warm management system, which is characterized in that the electronic control unit Temperature value of the temperature value compared with preset value, on first temperature sensor on first temperature sensor of acquisition The row's of sending warm regulatory requirement when no more than preset value.
CN201610770163.7A 2016-08-30 2016-08-30 Exhaust shutter is used to arrange the control method and system of warm management Active CN106150633B (en)

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CN106150633B true CN106150633B (en) 2018-11-16

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CN109667680B (en) * 2018-12-28 2022-06-28 潍柴动力股份有限公司 Heat removal and management method, device and system
CN113464253B (en) * 2020-03-31 2023-07-21 北京福田康明斯发动机有限公司 Device and method for DPF regeneration control of extended-range diesel engine
CN112228189B (en) * 2020-10-12 2021-12-21 潍柴动力股份有限公司 Exhaust gas heat management coupling method and exhaust gas treatment system
CN112343691B (en) * 2020-10-28 2021-10-08 潍柴动力股份有限公司 Method and equipment for quitting thermal management control
CN114312741A (en) * 2022-01-12 2022-04-12 东风商用车有限公司 Method and system for performing engine thermal management based on P0 shallow mixing architecture

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JP4017010B2 (en) * 2006-02-01 2007-12-05 いすゞ自動車株式会社 Exhaust gas purification system control method and exhaust gas purification system
US20080155962A1 (en) * 2006-12-06 2008-07-03 Siemens Vdo Automotive Canada Inc. Pressure or temperature sensor control of a variable position exhaust throttle valve
CN103742274B (en) * 2013-12-13 2017-06-27 潍柴动力股份有限公司 The control method and device of a kind of engine throttle
US9297320B2 (en) * 2014-07-25 2016-03-29 Ford Global Technologies, Llc Systems and methods for exhaust catalyst temperature control
JP2016153630A (en) * 2015-02-20 2016-08-25 いすゞ自動車株式会社 Exhaust emission control system

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