CN106285869A - Exhaust gas after treatment method - Google Patents
Exhaust gas after treatment method Download PDFInfo
- Publication number
- CN106285869A CN106285869A CN201610769605.6A CN201610769605A CN106285869A CN 106285869 A CN106285869 A CN 106285869A CN 201610769605 A CN201610769605 A CN 201610769605A CN 106285869 A CN106285869 A CN 106285869A
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- China
- Prior art keywords
- treatment method
- exhaust gas
- perform
- electromotor
- back pressure
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Classifications
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- 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
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- 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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1404—Exhaust gas temperature
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- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1406—Exhaust gas pressure
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- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to diesel engine truck exhaust system regions, it is provided that a kind of exhaust gas after treatment method.The method comprising the steps of: S1, detection delivery temperature, and performs step S2；S2, judge delivery temperature whether less than the first temperature threshold, if then performing step S3, if otherwise performing step S4；S3, electromotor perform Miller cycle, and perform step S1；S4, detect exhaust back pressure in real time, and perform step S5；S5, judge exhaust back pressure whether less than pressure threshold, if then performing step S6, if otherwise performing step S7；S6, electromotor are properly functioning, perform step S1 simultaneously；And S7, electromotor perform Miller cycle, perform step S4 simultaneously.The present invention provide exhaust gas after treatment method, by use Miller cycle promote delivery temperature, it is achieved that DPF passive regeneration, prevent and eliminate SCR crystallization, substantially increase the transformation efficiency of SCR simultaneously, reduce oil consumption and use cost.
Description
Technical field
The present invention relates to diesel engine truck exhaust system regions, be specifically related to a kind of exhaust gas after treatment method.
Background technology
In recent years, about the emission level of vehicle, the trend of a kind of tightened up legislation has been presented.Wherein locate after aerofluxus
Reason device includes: particulate filter (Diesel Particulate Filter, hereinafter referred to as DPF), it can be from aerofluxus
Particle-removing material；And SCR transducer (Selective Catalytic Reduction, hereinafter referred to as
SCR), it sprays a kind of amino reductive in the presence of a catalyst, with by conversion of nitrogen oxides as nitrogen with water.
In order to remove the soot particulates (Particulate Matter, hereinafter referred to as PM) in diesel exhaust gas, typically can
Engine exhaust conduit is installed DPF, DPF filtered from aerofluxus by PM, to prevent PM from leaving tail pipe.Along with DPF inside is caught
Collect to PM gradually increase, cause engine back pressure to rise the most therewith, make the rate of fuel consumption of diesel engine increase, under power simultaneously
Fall.Owing to PM is mainly made up of carbon, it is flammable the most at a certain temperature.But this situation is not easily accomplished, mainly because of
For the only just spontaneous combustion when the delivery temperature of about 450 DEG C of the PM of accumulation in DPF, and engine exhaust is not changed places and is reached this temperature,
Particularly when vehicle is applied under the low speed, such as urban road run duration delivery temperature generally only 150-300 DEG C.Cause
This needs to take certain means raising delivery temperature to remove PM, and in this removal DPF, the technology of PM is referred to as dpf regeneration technology.
Dpf regeneration mode is divided into passive regeneration and initiative regeneration.It addition, in order to remove the nitrogen oxides in aerofluxus, SCR typically can be passed through
Spraying into a certain amount of urea liquid in the exhaust pipe of engine, urea liquid at high temperature gasifies and is decomposed into ammonia and water, ammonia
Gas and the nitrogen oxides catalytic conversion reaction by catalyst, can be nitrogen and water by conversion of nitrogen oxides.Urea liquid is being given birth to
During becoming ammonia, it may occur that the chemical reaction of series of complex.When delivery temperature is relatively low when, easily produce carbamide knot
Crystalline substance, urea crystals constantly accumulates blocking discharge duct so that exhaust back pressure increases.
In prior art in order to improve delivery temperature typically directly in exhaustor use Resistive heating element raise
Delivery temperature；Or inject fuel in aerofluxus and make this fuel burn in special burner assembly.
The method of existing raising delivery temperature need to increase firing equipment or increase oil consumption, causes the raising of use cost.
Summary of the invention
The present invention is to solve the technical problem that diesel vehicle oil consumption is big, use cost is high of the prior art.
For solving the problems referred to above, the present invention provides a kind of exhaust gas after treatment method, and the method comprises the following steps:
S1, detection delivery temperature, and perform step S2；
S2, judge delivery temperature whether less than the first temperature threshold, if then performing step S3, if otherwise performing step
S4；
S3, electromotor perform Miller cycle, and perform step S1；
S4, detect exhaust back pressure in real time, and perform step S5；
S5, judge exhaust back pressure whether less than pressure threshold, if then performing step S6, if otherwise performing step S7；
S6, electromotor are properly functioning, perform step S1 simultaneously；And
S7, electromotor perform Miller cycle, perform step S4 simultaneously.
Wherein, in described step S4, described exhaust back pressure is the exhaust back pressure of SCR upstream.
Wherein, in described step S4, described exhaust back pressure is the exhaust back pressure of DPF upstream.
Wherein, before described step S4, also include step S4 ', described step S4 ' be: judge whether delivery temperature is less than
Second temperature threshold, if then performing step S4, if otherwise performing step S6；Described second temperature threshold is more than described first temperature
Degree threshold value.
Wherein, in described step S4 ' judged result be no make electromotor properly functioning after and perform step S1 it
Before, also perform following steps:
S8, DPF carry out initiative regeneration, then perform step S9
S9, judge pressure at expulsion whether less than pressure threshold, if then performing step S10, if otherwise performing step S8；
S10, DPF stop initiative regeneration, and perform step S1.
Wherein, described second temperature threshold is 500 DEG C.
Wherein, the span of described first temperature threshold is 300～400 DEG C.
Wherein, described first temperature threshold is 350 DEG C.
Wherein, the span of described pressure threshold is 16kpa～20kpa.
Wherein, described pressure threshold is 20kpa.
The exhaust gas after treatment method that the present invention provides, by using Miller cycle to promote delivery temperature, it is achieved that DPF is passive
Regenerate, prevent and eliminate SCR crystallization, substantially increase the transformation efficiency of SCR simultaneously, reduce oil consumption and use cost.
Accompanying drawing explanation
Fig. 1 is exhaust gas after treatment method flow chart in the embodiment of the present invention 1；
Fig. 2 is exhaust gas after treatment method flow chart in the embodiment of the present invention 2；
Fig. 3 is exhaust gas after treatment method flow chart in the embodiment of the present invention 3.
Detailed description of the invention
For making the purpose of invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in invention, in invention
Technical scheme be explicitly described, it is clear that described embodiment is to invent a part of embodiment rather than whole realities
Execute example.Based on the embodiment in invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly falls into the scope of invention protection.
Embodiment 1
Shown in Fig. 1, a kind of exhaust gas after treatment method that the embodiment of the present invention provides, comprise the following steps:
S1, detection delivery temperature, and perform step S2.By the temperature sensor detection aerofluxus being arranged in discharge duct
Temperature.
S2, judge delivery temperature whether less than the first temperature threshold, if then performing step S3, if otherwise performing step
S4.Wherein, the span of the first temperature threshold is 300～400 DEG C.Specifically, the first temperature threshold is taken as 350 DEG C.Work as row
When temperature is less than 350 DEG C, the efficiency of SCR conversion nitrogen oxides can reduce, during meanwhile SCR sprays into the exhaust pipe of engine
Urea liquid can occur other reactions a series of to produce crystallization.Additionally DPF caught inside to PM the most gradually increase, may
Blocking DPF.Now it is accomplished by a liter high exhaust temperature avoid and eliminate these situations.
S3, electromotor perform Miller cycle, and perform step S1.When delivery temperature is less than 350 DEG C, electromotor just switching
Perform Miller cycle, i.e. electromotor to terminate and piston movement is not to the at that time intake valve of lower dead center at breathing process
Close, until piston up moves to certain position intake valve and just closes, the most just start compression, make electromotor
Expansion ratio is more than compression ratio, so that delivery temperature raises.Along with the rising of delivery temperature, SCR sprays in the exhaust pipe of engine
Urea liquid be decomposed into ammonia and water, the speed that conversion of nitrogen oxides is nitrogen and water is the most constantly added by ammonia by catalyst
Hurry up.Meanwhile, it is also possible to suppression carbamide occurs other chemical reactions to produce crystallization.It addition, along with the rising of delivery temperature,
DPF carries out the catalyst composition that passive regeneration, i.e. DPF are distributed on its gas flow by utilization, reduces the ignition temperature of PM
Degree, along with the rising of delivery temperature, the continuous ignition of PM.In the process, by the temperature sensor being arranged in discharge duct
Detecting delivery temperature in real time, when delivery temperature is increased to more than 350 DEG C by Miller cycle, electromotor just stops performing Miller
Circulation, starts properly functioning i.e. electromotor piston in breathing process and arrives after bottom dead center, and intake valve is closed immediately, lives simultaneously
Plug starts move toward top dead centre and start compressed gas, makes the expansion ratio of electromotor equal to compression ratio.
S4, detect exhaust back pressure in real time, and perform step S5.When delivery temperature is in 350 DEG C, by being arranged on exhaustor
Pressure transducer detection exhaust back pressure in road.If the exhaust back pressure that exhaust back pressure is DPF upstream, then DPF's and/or SCR is stifled
Plug all can cause the exhaust back pressure detected to raise.If the exhaust back pressure that exhaust back pressure is SCR upstream, the then blocking of SCR just meeting
The exhaust back pressure detected is caused to raise.The direction that wherein tail gas is discharged is downstream, and its opposite direction is upstream.
S5, judge exhaust back pressure whether less than pressure threshold, if then performing step S6, if otherwise performing step S7.Its
In, the span of pressure threshold is 16kpa～20kpa.Specifically pressure threshold is taken as 20kpa.Due to along with electromotor
Running, PM is continuously generated, DPF caught inside to PM the most gradually increase and begin to block up DPF, thus cause exhaust back pressure liter
Height, simultaneously constantly carrying out along with SCR conversion nitrogen oxides, the crystallization of generation the most constantly increases and begins to block up SCR, thus
Exhaust back pressure is caused to raise.And the rising of exhaust back pressure greatly have impact on the power performance and the economy performance of electromotor.
S6, electromotor are properly functioning, perform step S1 simultaneously.When the exhaust back pressure of DPF upstream is less than 20kpa, explanation
DPF and SCR is the most unplugged, and now electromotor is properly functioning.In the process, delivery temperature to be detected in real time.
S7, electromotor perform Miller cycle, perform step S4 simultaneously.When the exhaust back pressure of DPF upstream is not less than 20kpa
Time, illustrate that now DPF and/or SCR has occurred and that blocking.Now electromotor improves aerofluxus temperature by switching to Miller cycle
Degree, along with the rising of delivery temperature, the crystallization that the PM in DPF starts in spontaneous combustion, SCR is gradually pyrolyzed.
The exhaust gas after treatment method that the present embodiment provides, by using Miller cycle to promote delivery temperature, it is achieved that DPF quilt
Move regeneration, prevent and eliminate SCR crystallization, substantially increase the transformation efficiency of SCR simultaneously, reduce oil consumption and use cost.
Embodiment 2
Shown in Fig. 2, the present embodiment is essentially identical with the exhaust gas after treatment method of embodiment 1, for embodiment 1 phase
Same part the present embodiment repeats no more, and its difference is: the most also include step S4 ', step S4 ' be:
Judge whether delivery temperature is less than the second temperature threshold, if then performing step S4, if otherwise performing step S6；Second temperature threshold
Value is more than the first temperature threshold.Specifically, the second temperature threshold is 500 DEG C.When exhaust back pressure is not less than 20kpa, electromotor
A liter high-temperature is carried out by performing Miller cycle.When delivery temperature is increased to more than 500 DEG C, if electromotor continues executing with Miller and follows
Ring, it will cause electromotor to burn out.Therefore, when delivery temperature is not less than 500 DEG C, electromotor need to stop Miller cycle, is just starting
Often run.When delivery temperature is less than 500 DEG C, by judging whether the exhaust back pressure of detection in real time is less than 20kpa, if being less than
20kpa, then explanation DPF with SCR does not plugs, and now electromotor just can stop Miller cycle, starts properly functioning；If no
Less than 20kpa, then explanation DPF Yu SCR still in blocked state, need by Miller cycle promote delivery temperature remove PM with
Crystallization, now electromotor need to continue executing with Miller cycle.
The exhaust gas after treatment method that the present embodiment provides, by using Miller cycle to promote delivery temperature, it is achieved that DPF quilt
Dynamic regeneration and initiative regeneration, prevent and eliminate SCR crystallization, substantially increasing the transformation efficiency of SCR simultaneously, reduce oil consumption and
Use cost, and by contrast delivery temperature and the second temperature threshold, it is to avoid electromotor burns out because heating up too high.
Embodiment 3
Essentially identical with the exhaust gas after treatment method of embodiment 2 in conjunction with the present embodiment shown in Fig. 3, for embodiment 2 phase
With part the present embodiment repeat no more, its difference is: in step S4 ' judged result is no to make electromotor normally transport
After row and performing before step S1, also perform following steps:
S8, DPF carry out initiative regeneration, then perform step S9
S9, judge pressure at expulsion whether less than pressure threshold, if then performing step S10, if otherwise performing step S8；
S10, DPF stop initiative regeneration, and perform step S1.
When delivery temperature is not less than 500 DEG C, no matter whether the blocking in DPF and SCR removes, in order to avoid electromotor liter
Temperature is too high and burns out, and now electromotor need to stop Miller cycle immediately, starts properly functioning.After electromotor is properly functioning, aerofluxus
Temperature can be gradually reduced, and now can improve delivery temperature by DPF initiative regeneration, so that blocking is removed in PM spontaneous combustion.With
Time, owing to SCR is positioned at downstream of DPF, the tail gas through SCR is the tail gas after DPF heats up, thus can realize the pyrolysis of SCR crystallization.
In the process, need to judge that the exhaust back pressure detected in real time, whether less than 20kpa, if less than 20kpa, has then illustrated DPF Yu SCR
Through not plugging, now DPF just can stop initiative regeneration；If not less than 20kpa, then explanation DPF Yu SCR is still in blocking shape
State, needs to improve delivery temperature by DPF initiative regeneration.Specifically, conventional initiative regeneration method has burner oil spout to add
Hot recycling and electrical heating regeneration.Burner oil spout thermal regeneration is to arrange burner in the porch of DPF, sprays into diesel oil and secondary
Air, ignite PM.Electrical heating is regenerated as the method using electrified regulation and heats DPF, to promote PM ignition.At said process
In, cause delivery temperature to reduce owing to electromotor is properly functioning, but why need not detect temperature in this process, be because
After SCR is as DPF, the exhaust temperature after DPF initiative regeneration is necessarily higher than the first temperature threshold.
The exhaust gas after treatment method that the present embodiment provides, by using Miller cycle to promote delivery temperature, and by DPF quilt
Dynamic regeneration and initiative regeneration combine, and can realize more preferably preventing and eliminating the effect of SCR crystallization, substantially increase SCR simultaneously
Transformation efficiency, reduce oil consumption and use cost, and, it is to avoid electromotor burns out because heating up too high, avoids simultaneously
Cause DPF and SCR blocking not removed because excessive discharge temperature stops Miller cycle.
Last it is noted that above example is only in order to illustrate the technical scheme of invention, it is not intended to limit；Although ginseng
According to previous embodiment, invention is described in detail, it will be understood by those within the art that: it still can be right
Technical scheme described in foregoing embodiments is modified, or wherein portion of techniques feature is carried out equivalent；And this
A little amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope inventing each embodiment technical scheme.
Claims (10)
1. an exhaust gas after treatment method, it is characterised in that comprise the following steps:
S1, detection delivery temperature, and perform step S2；
S2, judge delivery temperature whether less than the first temperature threshold, if then performing step S3, if otherwise performing step S4；
S3, electromotor perform Miller cycle, and perform step S1；
S4, detect exhaust back pressure in real time, and perform step S5；
S5, judge exhaust back pressure whether less than pressure threshold, if then performing step S6, if otherwise performing step S7；
S6, electromotor are properly functioning, perform step S1 simultaneously；And
S7, electromotor perform Miller cycle, perform step S4 simultaneously.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that in described step S4, described aerofluxus is carried on the back
Pressure is the exhaust back pressure of SCR upstream.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that in described step S4, described aerofluxus is carried on the back
Pressure is the exhaust back pressure of DPF upstream.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that also included step before described step S4
S4 ', described step S4 ' be: judge whether delivery temperature is less than the second temperature threshold, if then performing step S4, if otherwise holding
Row step S6；Described second temperature threshold is more than described first temperature threshold.
Exhaust gas after treatment method the most according to claim 4, it is characterised in that in described step S4 ' judged result is no
And after making electromotor properly functioning and performing before step S1, also perform following steps:
S8, DPF carry out initiative regeneration, then perform step S9
S9, judge pressure at expulsion whether less than pressure threshold, if then performing step S10, if otherwise performing step S8；
S10, DPF stop initiative regeneration, and perform step S1.
Exhaust gas after treatment method the most according to claim 4, it is characterised in that described second temperature threshold is 500 DEG C.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that the span of described first temperature threshold
It it is 300～400 DEG C.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that described first temperature threshold is 350 DEG C.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that the span of described pressure threshold is
16kpa～20kpa.
Exhaust gas after treatment method the most according to claim 1, it is characterised in that described pressure threshold is 20kpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610769605.6A CN106285869B (en) | 2016-08-30 | 2016-08-30 | Exhaust gas after treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610769605.6A CN106285869B (en) | 2016-08-30 | 2016-08-30 | Exhaust gas after treatment method |
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| CN106285869B CN106285869B (en) | 2019-01-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6381952B1 (en) * | 1999-10-26 | 2002-05-07 | Toyota Jidosha Kabushiki Kaisha | Exhaust temperature raising apparatus and method for internal combustion engine |
| WO2009056931A2 (en) * | 2007-10-30 | 2009-05-07 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for controlling an exhaust throttle valve of an internal combustion engine |
| CN102057146A (en) * | 2008-06-04 | 2011-05-11 | 日产自动车株式会社 | Apparatus for engine control |
| CN102575589A (en) * | 2009-10-16 | 2012-07-11 | 三菱重工业株式会社 | Miller cycle engine |
| CN103670726A (en) * | 2012-09-10 | 2014-03-26 | 福特环球技术公司 | Catalyst heating with exhaust back-pressure |
-
2016
- 2016-08-30 CN CN201610769605.6A patent/CN106285869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6381952B1 (en) * | 1999-10-26 | 2002-05-07 | Toyota Jidosha Kabushiki Kaisha | Exhaust temperature raising apparatus and method for internal combustion engine |
| WO2009056931A2 (en) * | 2007-10-30 | 2009-05-07 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for controlling an exhaust throttle valve of an internal combustion engine |
| CN102057146A (en) * | 2008-06-04 | 2011-05-11 | 日产自动车株式会社 | Apparatus for engine control |
| CN102575589A (en) * | 2009-10-16 | 2012-07-11 | 三菱重工业株式会社 | Miller cycle engine |
| CN103670726A (en) * | 2012-09-10 | 2014-03-26 | 福特环球技术公司 | Catalyst heating with exhaust back-pressure |
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| Publication number | Publication date |
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| CN106285869B (en) | 2019-01-15 |
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