CN104265423B - Tail gas catalysis system and tail gas catalysis control method - Google Patents
Tail gas catalysis system and tail gas catalysis control method Download PDFInfo
- Publication number
- CN104265423B CN104265423B CN201410510915.7A CN201410510915A CN104265423B CN 104265423 B CN104265423 B CN 104265423B CN 201410510915 A CN201410510915 A CN 201410510915A CN 104265423 B CN104265423 B CN 104265423B
- Authority
- CN
- China
- Prior art keywords
- tail gas
- storage tank
- exhaust
- offgas duct
- catalyst
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a tail gas catalysis system and a tail gas catalysis control method. The situation that a catalyst is extremely weak in catalysis capability before startup of an engine can be eliminated while the catalysis capability of the catalyst is fully and efficiently utilized within a full rotating speed region of the engine. The tail gas catalysis system comprises a tail gas flow path in which a tail gas pipe, a catalysis device tank and a tail gas exhaust pipe are arranged, and a tail gas heating bypath in which a tail gas heating inlet pipe, a tail gas storage tank and a heated tail gas exhaust pipe are arranged; in the tail gas heating bypath, a first single-way stop valve is arranged in the tail gas heating inlet pipe; a compression pump is arranged at the position of the tail gas heating inlet pipe which is closer to a connecting part of the tail gas storage tank than the first single-way stop valve; a controllable valve is arranged in the tail gas storage tank.
Description
Technical field
The present invention relates to a kind of tail gas catalyzed system and tail gas catalyzed control method, particularly passed through using catalyst
Oxidation and reduction are by CO, HC and NO of discharging in vehicle exhaustXDeng pernicious gas be changed into harmless carbon dioxide, water and
The tail gas catalyzed system of nitrogen and tail gas catalyzed control method.
Background technology
Tail gas catalyzed system is indispensable purifier during motor vehicle exhaust emission, and it can be by air and automobile
CO, HC and the NO discharging as tail gas after burning within the engineXIt is changed into no by oxidation and reduction etc. harmful automobile
The carbon dioxide of evil, water and nitrogen.
As the tail gas catalyzed system of existing engine, for example, in patent document 1 (Japanese Patent Laid-Open 6-
212958) have disclosed in when, after the engine started after the stipulated time, catalyst is still without the temperature reaching regulation
In the case of, by importing extraneous gas come the technology that catalyst is heated.
But, in above-mentioned patent document 1, however it remains following technical problem：
● in the low-speed region of engine, because tail gas amount is less, the honeycomb catalyst carrier in catalyst has part not
Can contact with tail gas, therefore, lead to catalyst ability superfluous.On the other hand, in the high-speed region of engine, due to tail gas
Amount is larger, and flow velocity is fast, leads to tail gas shorter with the time of contact of catalyst and can flow quickly through catalyst converter tank, therefore, leads to
The catalyst scarce capacity of high speed area, and then have a strong impact on purification efficiency.
● because catalyst just starts when delivery temperature reaches 300 DEG C to activate, therefore, when delivery temperature is less than 300 DEG C
When, the catalytic capability of catalyst is extremely weak, causes engine starting the exhaust emissions deterioration with idling initial stage.
Therefore, how equal abundant effectively utilizes catalyst ability and how in the full rotary speed area of engine
The extremely weak situation of catalytic capability becomes as technical problem urgently to be resolved hurrily before an engine is started to eliminate catalyst.
Content of the invention
The present invention makees for solving above-mentioned technical problem, its object is to provide a kind of tail gas catalyzed system and tail gas catalyzed
Control method, its can in the full rotary speed area of engine all fully effectively utilizes catalyst ability while eliminate catalyst
The extremely weak situation of catalytic capability before an engine is started.
The feature of the tail gas catalyzed system of first technical scheme of a first aspect of the present invention is, including：Tail gas stream, should
It is provided with offgas duct, catalyst converter tank and tail gas discharging pipe in tail gas stream, wherein, one end of above-mentioned offgas duct and the row of engine
Gas port connects, and the other end of above-mentioned offgas duct is connected with one end of above-mentioned catalyst converter tank, stores in above-mentioned catalyst converter tank
Catalyst, the tail gas after the catalyst in catalyst converter tank is discharged by above-mentioned tail gas discharging pipe；And by tail gas heating
Road, is provided with tail gas heating air inlet pipe, tail gas storage tank and heating exhaust pipe in the bypass of this tail gas heating, wherein, above-mentioned
One end of tail gas heating air inlet pipe and the exhaust port side above-mentioned offgas duct, leaning on above-mentioned engine of above-mentioned tail gas stream
Part connects, and the other end of above-mentioned tail gas heating air inlet pipe is connected with above-mentioned tail gas storage tank, above-mentioned heating exhaust pipe
One end is connected with above-mentioned tail gas storage tank, the other end of above-mentioned heating exhaust pipe and above-mentioned tail gas stream offgas duct,
Part by above-mentioned catalyst converter tank side connects, in the bypass of above-mentioned tail gas heating, in the midway of above-mentioned tail gas heating air inlet pipe
Be provided with the first unidirectional stop valve, above-mentioned tail gas heating air inlet pipe, than above-mentioned first unidirectional stop valve more lean on and above-mentioned tail
Gas stores at the position of tank connected coupling part, is provided with compression pump, is provided with controllable valve in above-mentioned tail gas storage tank.
The tail gas catalyzed system of second technical scheme of a first aspect of the present invention is the of a first aspect of the present invention
On the basis of the tail gas catalyzed system of one technical scheme, it is characterized in that, in the above-mentioned tail gas storage tank of above-mentioned tail gas heating bypass
In be provided with heater circuit.
The tail gas catalyzed system of the 3rd technical scheme of a first aspect of the present invention is the of a first aspect of the present invention
On the basis of the tail gas catalyzed system of two technical schemes, it is characterized in that, above-mentioned heater circuit includes heater circuit switch, metal-oxide-semiconductor
Current amplifier and resistance wire.
The tail gas catalyzed system of the 4th technical scheme of a first aspect of the present invention is the of a first aspect of the present invention
On the basis of the tail gas catalyzed system of one technical scheme, it is characterized in that, in tail gas stream, bypassing than with above-mentioned tail gas heating
The coupling part that connects of above-mentioned tail gas heating air inlet pipe at the position in downstream, be provided with open-close type valve.
The tail gas catalyzed system of the 5th technical scheme of a first aspect of the present invention is the of a first aspect of the present invention
On the basis of the tail gas catalyzed system of one technical scheme or the second technical scheme, it is characterized in that, in above-mentioned tail gas storage tank also
It is provided with machine security relief valve, pressure sensor and temperature sensor, be provided with the midway of above-mentioned heating exhaust pipe
Second unidirectional stop valve.
The tail gas catalyzed control method of first technical scheme of a second aspect of the present invention is the first party using the present invention
The tail gas catalyzed system of the 5th technical scheme in face is controlled to the catalysis of tail gas, it is characterized in that, electricity on above-mentioned engine
And before not yet starting, using the compression of above-mentioned compression pump or using the compression of above-mentioned compression pump and above-mentioned heating
The heat effect of circuit, the air being stored in above-mentioned tail gas storage tank is heated, in above-mentioned tail gas storage tank
When air themperature is higher than the activation temperature of above-mentioned catalyst, by the air above-mentioned catalyst converter tank of introducing of above-mentioned tail gas storage tank and right
Catalyst in above-mentioned catalyst converter tank is heated.
The tail gas catalyzed control method of second technical scheme of a second aspect of the present invention is in a second aspect of the present invention
The tail gas catalyzed control method of the first technical scheme on the basis of, it is characterized in that, in above-mentioned engine start, idling, will
Above-mentioned open-close type valve is closed, the compression using above-mentioned compression pump or the compression using above-mentioned compression pump and on
State the heat effect of heater circuit, the tail gas being stored in above-mentioned tail gas storage tank is heated, in the storage of above-mentioned tail gas
After exhaust temperature in tank reaches 300 DEG C, wait the stipulated time, after the above-mentioned stipulated time, make above-mentioned controllable valve
Carry out switch motion.
In addition, in the tail gas catalyzed control method of second technical scheme of a second aspect of the present invention, above-mentioned controlled valve
Door switch motion pass through the primary importance of above-mentioned offgas duct, i.e. be located at above-mentioned tail gas stream, compare with above-mentioned tail gas heating by
The exhaust flow of position and the catalysis in exhaust gas flow downstream is more leaned in the coupling part that the above-mentioned heating exhaust pipe on road connects
Relation between the theoretical delivery of best results, to carry out, is less than above-mentioned theory in the exhaust flow of the primary importance of above-mentioned offgas duct
During flow, it is gradually increased the aperture of above-mentioned controllable valve, be above-mentioned theory in the exhaust flow of the primary importance of above-mentioned offgas duct
When more than flow, it is gradually reduced the aperture of above-mentioned controllable valve.
The tail gas catalyzed control method of the 3rd technical scheme of a second aspect of the present invention is in a second aspect of the present invention
The tail gas catalyzed control method of the first technical scheme on the basis of, it is characterized in that, when engine is in normal operation, will be upper
State open-close type valve to open, above-mentioned offgas duct the second place, i.e. be located at above-mentioned tail gas stream, than and above-mentioned tail gas heating
The coupling part that the above-mentioned tail gas heating air inlet pipe of bypass connects more leans on the exhaust flow of the position of exhaust gas flow upstream side to be more than
During above-mentioned theory flow, it is judged as that the catalytic capability of the catalyst of above-mentioned catalyst converter tank is not enough, in the second of above-mentioned offgas duct
When the exhaust flow put is less than above-mentioned theory flow, it is judged as that the catalytic capability of the catalyst of above-mentioned catalyst converter tank is superfluous.
The tail gas catalyzed control method of the 4th technical scheme of a second aspect of the present invention is in a second aspect of the present invention
The tail gas catalyzed control method of the first technical scheme on the basis of, it is characterized in that, when above-mentioned catalytic capability is not enough, by upper
State the relation between the exhaust flow of the primary importance of offgas duct and above-mentioned theory flow, to control the pumping energy of above-mentioned compression pump
Power, when the exhaust flow of the primary importance of above-mentioned offgas duct is more than above-mentioned theory flow, increases the pumping energy of above-mentioned compression pump
Power, when the exhaust flow of the primary importance of above-mentioned offgas duct is below above-mentioned theory flow, reduces the pumping of above-mentioned compression pump
Ability.
In addition, in the tail gas catalyzed control method of the 4th technical scheme of a second aspect of the present invention, in above-mentioned catalysis
When ability is superfluous, by the relation between the exhaust flow of the primary importance of above-mentioned offgas duct and above-mentioned theory flow, to control on
State the aperture of controllable valve, when the exhaust flow of the primary importance of above-mentioned offgas duct is less than above-mentioned theory flow, be gradually increased
The aperture of above-mentioned controllable valve, when the exhaust flow of the primary importance of above-mentioned offgas duct is more than above-mentioned theory flow, gradually
Reduce the aperture of above-mentioned controllable valve.
The tail gas catalyzed control method of the 5th technical scheme of a second aspect of the present invention is in a second aspect of the present invention
The first technical scheme to the 4th technical scheme in the tail gas catalyzed control method of arbitrary technical scheme on the basis of, its feature
It is that the pressure value detecting in the pressure sensor located at above-mentioned tail gas storage tank is more than the utmost carrying ability of above-mentioned tail gas storage tank
During pressure value, open above-mentioned safety relief valve.
Tail gas catalyzed system according to the present invention and tail gas catalyzed control method, in vehicle launch, catalyst converter tank
In catalyst reached 300 DEG C, therefore, compared with prior art, catalyst can be solved and be catalyzed energy before an engine is started
The extremely weak technical problem of power.
Tail gas catalyzed system according to the present invention and tail gas catalyzed control method, by when tail gas amount is excessive, by part
Tail gas compression is stored in tail gas storage tank, when tail gas amount is less, suitably discharges the tail gas in tail gas storage tank, thereby,
Can in the full rotary speed area of engine equal abundant effectively utilizes catalyst abilities.
Brief description
Fig. 1 is the integrally-built schematic diagram of the tail gas catalyzed system representing embodiment of the present invention.
Fig. 2 is to represent before activation, the tail gas heating bypass that the tail gas catalyzed system of embodiment of the present invention has and
The schematic diagram of the action (course of work 1 of tail gas catalyzed system) of associated components.
Fig. 3 be represent starting, the idling stage, the tail gas heating that the tail gas catalyzed system of embodiment of the present invention has
The schematic diagram of the action (course of work 2 of tail gas catalyzed system) of bypass and associated components.
Fig. 4 be represent starting, the idling stage, the tail gas heating that the tail gas catalyzed system of embodiment of the present invention has
The schematic diagram of the action (course of work 2 of tail gas catalyzed system) of bypass and associated components.
Fig. 5 is the effect of the heatable catalyst in the course of work 1 and the course of work 2 represent above-mentioned tail gas catalyzed system
Figure.
Fig. 6 is the signal of the course of work 3 (storage partial tail gas) of the tail gas catalyzed system representing embodiment of the present invention
Figure.
Fig. 7 is the course of work 4 (tail gas of discharge unit storage) of the tail gas catalyzed system representing embodiment of the present invention
Schematic diagram.
Fig. 8 be in the course of work 3 and the course of work 4 represent above-mentioned tail gas catalyzed system system storage, emission
Effect.
Fig. 9 is the control flow chart of the tail gas catalyzed system of embodiment of the present invention.
Specific embodiment
Hereinafter, with reference to Fig. 1～Fig. 8, the overall structure and action of the tail gas catalyzed system of embodiment of the present invention is carried out
Describe in detail.
Fig. 1 is the integrally-built schematic diagram of the tail gas catalyzed system 100 representing embodiment of the present invention.
As shown in figure 1, the tail gas catalyzed system 10 of engine E includes：Tail gas stream 100, is arranged in this tail gas stream 100
There are offgas duct 110, catalyst converter tank 120 and tail gas discharging pipe 130, wherein, one end of above-mentioned offgas duct 110 is with engine E's
Exhaust port connects, and the other end of above-mentioned offgas duct 110 is connected with one end of catalyst converter tank 120, stores up in above-mentioned catalyst converter tank 120
There is the catalyst for being catalyzed to tail gas, the catalyst in catalyst converter tank 120 is urged by above-mentioned tail gas discharging pipe 130
Tail gas (clean tail gas) after change is discharged；And tail gas heating bypass 200, it is provided with tail gas in this tail gas heating bypass 200 and add
Hot air inlet pipe 210, tail gas storage tank 220 and heating exhaust pipe 230, wherein, the one of above-mentioned tail gas heating air inlet pipe 210
End is connected with the part of exhaust port side offgas duct 110, depending on engine E of above-mentioned tail gas stream 100, the other end and tail
Gas storage tank 220 connects, for the tail gas not heated discharged from the exhaust port of engine E is introduced tail gas storage tank 220,
One end of above-mentioned heating exhaust pipe 230 is connected with tail gas storage tank 220, the tail gas of the other end and above-mentioned tail gas stream 100
Part pipe 110, leaning on catalyst converter tank 120 side connects, for discharging the tail gas after tail gas storage tank 220 heats.
Tail gas stream 100, than the coupling part that is connected of tail gas heating air inlet pipe 210 with tail gas heating bypass 200
At the position in downstream, it is provided with open-close type valve m.The midway of tail gas heating air inlet pipe 210 is provided with unidirectional stop valve a
(the first unidirectional stop valve), tail gas is only capable of entering tail gas storage tank 220 via tail gas heating air inlet pipe 210.In addition, in tail gas plus
Hot air inlet pipe 210, more lean at the position of coupling part being connected with tail gas storage tank 220 than unidirectional stop valve a and be provided with pressure
Contracting pump (variable capacity compression pump) b.
It is provided with heater circuit (heater circuit switch d, metal-oxide-semiconductor in the tail gas storage tank 220 of tail gas heating bypass 200
Current amplifier e, resistance wire f), machine security relief valve c, pressure sensor g, temperature sensor i and controllable valve j.
Heating exhaust pipe 230 midway be provided with unidirectional stop valve k (the second unidirectional stop valve), tail gas be only capable of from
Tail gas storage tank 220 is discharged via heating exhaust pipe 230.
Fig. 2 is to represent before engine E starts, tail gas heating bypass 200 and correlation that tail gas catalyzed system 10 has
Action (the tail of part (compression pump b, machine security relief valve c, heater circuit switch d, controllable valve j and open-close type valve m etc.)
The course of work 1 of gas catalysis system 10) schematic diagram.
As shown in Fig. 2 before upper electrical switch is opened (when i.e., upper electrical switch is "Off"), open-close type valve m opens, air
Temperature is in normal temperature, and compression pump b closes simultaneously, and heater circuit switch d opens, and controllable valve j closes.
After upper electrical switch is opened, (when i.e., upper electrical switch is "ON", now engine is still not actuated, for example, rotates car key
Spoon, makes vehicle be energized), open-close type valve m opens, and controllable valve j closes.Now, compression pump b is changed into from closing and opens,
Heater circuit switch d is changed into from closing and opens, thus being carried out to the air in tail gas storage tank 220 by heater circuit
Heating.
The air themperature in tail gas storage tank 220 is detected using temperature sensor i and reach the activation temperature of catalyst
After (300 DEG C), close compression pump b, close heater circuit switch d, and controllable valve j is opened, to be deposited using being stored in tail gas
Tail gas (now, because engine not yet starts, be still therefore the air after heating) in storage tank 220 is in catalyst converter tank 120
Catalyst heated.
Before an engine is started, because offgas duct 110 internal memory leaves large quantity of air, by heating to air, thus
Catalyst temperature can be made to be promoted to activation temperature (about 300 DEG C) as early as possible, thereby, using before engine start, air can be entered
Row heating, to make the activation of catalyst shift to an earlier date.
In the course of work 1 of tail gas catalyzed system 10, carry out following action：
(1) pass through the suction of compression pump b, the air in offgas duct is pumped in tail gas storage tank 220, and air is entered
Row compression.Substantial amounts of heat can be produced in air compression process, thus heating to the air in tail gas storage tank 220.
(2) given off heat by the resistance wire f in heater circuit, the air in tail gas storage tank 220 is heated.
(3) after the air themperature in tail gas storage tank 220 reaches 300 DEG C, by heated sky in tail gas storage tank 220
Gas is emitted at catalyst converter tank 120, with the catalyst in heatable catalytic converter tank 120.
Fig. 3 and Fig. 4 is to represent in engine E startup, idling stage, by the tail gas heating that tail gas catalyzed system 10 has
Road 200 and associated components (compression pump b, machine security relief valve c, heater circuit switch d, controllable valve j and open-close type valve m
Deng) action (course of work 2 of tail gas catalyzed system 10) schematic diagram.
Understand the catalyst it is assumed that when the exhaust flow of catalyst converter tank 120 is θ g/min in conjunction with Fig. 1, Fig. 3 and Fig. 4
Catalytic effect optimal.Due to depositing in catalytic process, catalytic capability mentioned in the background is superfluous and catalytic capability is not enough
Problem, therefore, tested by catalyst performance, the concrete numerical value of θ can be known, that is, θ be constant.
Additionally, the ECU of engine E can be evaluated at offgas duct A (as shown in figure 1, being located at tail gas by rotating speed and load
Stream 100, than with the coupling part that is connected of tail gas heating air inlet pipe 210 of tail gas heating bypass 200 more by exhaust gas flow
Trip side position A) exhaust flow, for example, β g/min.
In addition, the ECU of engine E by the pressure value of the pressure sensor g in tail gas heating bypass 200, and can combine
The aperture of controllable valve j and/or the opening value of variable capacity compression pump b, to evaluate at offgas duct B (as shown in figure 1, being located at
Tail gas stream 100, than with the coupling part that is connected of heating exhaust pipe 230 of tail gas heating bypass 200 more by tail gas stream
The position B in dynamic downstream) exhaust flow, for example, γ g/min.
When engine E starts, (i.e., the activate switch of engine E is changed into "ON" from "Off", for example, rotate car key and carry out
Igniting) after, open-close type valve m is closed, compression pump b is opened, heater circuit switch d is opened, and controllable valve j is closed
Close.Now, the tail gas producing after burning in engine E is not via tail gas stream 100, but bypasses 200 via tail gas heating
Tail gas heating air inlet pipe 210 be stored in tail gas storage tank 220, and using heater circuit, tail gas therein is heated.
After the exhaust temperature in tail gas storage tank 220 reaches 300 DEG C, wait stipulated time T1, so that tail gas storage tank
Exhaust temperature in 220 is higher than 300 DEG C.
When, after above-mentioned stipulated time T1, making controllable valve j carry out switch motion.
The switch motion of above-mentioned controllable valve j is by the theory optimal with catalytic effect of the exhaust flow γ at offgas duct B
Relation between flow θ is carrying out.During exhaust flow γ ＜ theoretical delivery θ at offgas duct B, make the aperture of controllable valve j by
Gradual change is big, so that exhaust flow γ offgas duct B at positive (increasing the exhaust flow γ at offgas duct B place) levels off to theory and flows
Amount θ.During exhaust flow γ >=theoretical delivery θ at offgas duct B, the aperture of controllable valve j is made to be gradually reduced, so that offgas duct
Exhaust flow γ at B reversely (reduces the exhaust flow γ at offgas duct B) and levels off to theoretical delivery θ.
In startup and the idling stage of engine E, exhaust temperature is likely lower than 300 DEG C, by heating to tail gas, energy
Catalyst temperature is made to be promoted to 300 DEG C as early as possible, thus improving the purification efficiency to tail gas for the catalyst.
In the course of work 2 of tail gas catalyzed system 10, carry out following action：
(1) using compression pump b, whole tail gas are pumped in tail gas storage tank 220, can produce in the compression process of tail gas
Raw substantial amounts of heat, thus heat to tail gas.
(2) given off heat by the resistance wire f in heater circuit, the tail gas in tail gas storage tank 220 is heated.
(3) after the exhaust temperature in tail gas storage tank 220 reaches 300 DEG C, by heated tail in tail gas storage tank 220
Gas is emitted at catalyst converter tank 120, with the catalyst in heatable catalytic converter tank 120.
Fig. 5 is the effect of the heatable catalyst in the course of work 1 and the course of work 2 represent above-mentioned tail gas catalyzed system 10
Figure.
As shown in figure 5, in the prior art, on vehicle between electric t1～vehicle launch t2 during, catalyst converter tank 120
Interior catalyst temperature is in normal temperature, after vehicle launch t2, just starts the catalyst in catalyst converter tank 120 is heated,
Thus the catalyst in catalyst converter tank 120 for example can be only achieved 300 DEG C in the t3 moment.On the contrary, in the present invention, electricity on vehicle
During between t1～vehicle launch t2, using the resistance wire f of the swabbing action (compression) of compression pump b and heater circuit
Heat effect, to make the air in tail gas storage tank 220 raise, after more than 300 DEG C, to the catalyst in catalyst converter tank 120
Heated.
In addition, in the present invention, show that vehicle could start after the catalyst in catalyst converter tank 120 reaches 300 DEG C
Example.So, in the present invention, for example in the vehicle launch t2 moment, the catalyst in catalyst converter tank 120 has reached 300
DEG C, therefore, compared with prior art, the catalyst extremely weak technical problem of catalytic capability before an engine is started can be solved.
Fig. 6 and Fig. 7 is all the figure representing under engine E normal operation, and wherein, Fig. 6 represents present embodiment
The schematic diagram of the course of work 3 (storage partial tail gas) of tail gas catalyzed system 10, Fig. 7 is the tail gas representing embodiment of the present invention
The schematic diagram of the course of work 4 (tail gas of discharge unit storage) of catalysis system.
In Fig. 6, Fig. 7, when normal working of engine, open-close type valve m is in open mode.
As shown in fig. 6, during exhaust flow β≤theoretical delivery θ at offgas duct A, being judged as urging in catalyst converter tank 120
The catalytic effect of agent is preferably or catalytic capability still has more than needed, there is not the not enough situation of catalytic capability.
During exhaust flow β ＞ theoretical delivery θ at offgas duct A, it is judged as the catalysis of the catalyst in catalyst converter tank 120
Scarce capacity.This is due to entering the tail gas in catalyst converter tank 120 excessively.Now, controllable valve j is closed, and will press
Contracting pump b opens, and is stored in tail gas storage tank 220 with extracting tail gas from offgas duct 110.
In addition, the switch motion of the exhaust capacity of above-mentioned compression pump b is by the exhaust flow γ at offgas duct B and catalysis effect
Relation between really optimal theoretical delivery θ is carrying out.During exhaust flow γ ＞ theoretical delivery θ at offgas duct B, increase compression
The exhaust capacity of pump b, so that reversely (i.e. exhaust flow γ at the reduction offgas duct B) convergence of the exhaust flow γ at offgas duct B
In theoretical delivery θ.During exhaust flow γ ＜ theoretical delivery θ at offgas duct B, reduce the exhaust capacity of compression pump b, so that tail
Exhaust flow γ at tracheae B positive (increasing the exhaust flow γ at offgas duct B) levels off to theoretical delivery θ.
In the course of work 3 of tail gas catalyzed system 10, during exhaust flow β ＞ theoretical delivery θ at offgas duct A, will
Appropriate tail gas stores in tail gas storage tank 220, make inflow catalyst converter tank 120 exhaust flow constant in θ g/min.Now, enter
The following action of row：
(1) partial tail gas are pumped in tail gas storage tank 220 compression pump b, and remaining tail gas is urged through catalyst converter tank 120
It is expelled in air after agent catalytic treatment.
(2) ECU exports the working condition to control variable capacity compression pump b by dutycycle.In addition, ECU passes through to compare
The difference of the theoretical delivery θ optimal with catalytic effect of the exhaust flow γ at offgas duct B, to feed back the working condition of compression pump.
As shown in fig. 7, during exhaust flow β ＞ theoretical delivery θ at offgas duct A, being judged as urging in catalyst converter tank 120
The catalytic capability of agent is not enough, and now, compression pump b is in open mode.
During exhaust flow β ＜ at offgas duct A (or≤) theoretical delivery θ, it is judged as the catalyst in catalyst converter tank 120
Catalytic capability still have more than needed.This is not enough due to entering the tail gas in catalyst converter tank 120.Now, controllable valve j is beaten
Opening, and compression pump b is closed, being arranged via from heating tail gas discharging pipe 230 with will be stored in the tail gas in tail gas storage tank 220
Go out.
The switch motion of above-mentioned controllable valve j is by the theory optimal with catalytic effect of the exhaust flow γ at offgas duct B
Relation between flow θ is carrying out.During exhaust flow γ ＜ theoretical delivery θ at offgas duct B, make the aperture of controllable valve j by
Gradual change is big, so that exhaust flow γ offgas duct B at positive (increasing the exhaust flow γ at offgas duct B place) levels off to theory and flows
Amount θ.During exhaust flow γ >=theoretical delivery θ at offgas duct B, the aperture of controllable valve j is made to be gradually reduced, so that offgas duct
Exhaust flow γ at B reversely (reduces the exhaust flow γ at offgas duct B) and levels off to theoretical delivery θ.
In the course of work 4 of tail gas catalyzed system 10, during exhaust flow β ＜ theoretical delivery θ at offgas duct A, tail
Gas storage tank 220 discharges appropriate tail gas to catalyst converter tank 120, make inflow catalyst converter tank 120 exhaust flow constant in θ g/
min.Now, carry out following action：
(1) controllable valve j is opened, by the exhaust emissions after compression storage in tail gas storage tank 220 to catalyst converter tank 120
Place.
(2) ECU exports the working condition to control controllable valve j by dutycycle.In addition, ECU is by comparing offgas duct B
The difference of the exhaust flow γ theoretical delivery θ optimal with catalytic effect at place, to feed back the working condition of compression pump.
Fig. 8 is that the system in the course of work 3 and the course of work 4 represent above-mentioned tail gas catalyzed system 10 stores, discharges tail
The effect of gas.
In the prior art, during the traveling of vehicle, there is high-speed region and low-speed region in the rotating speed of engine,
During low-speed region, because tail gas amount is few, therefore, the tail gas amount in catalyst converter tank 120 is few, and makes urging of catalyst therein
Change ability is superfluous, and on the contrary, in high-speed region, because tail gas amount is many, therefore, the tail gas amount in catalyst converter tank 120 is many, and
Make the catalytic capability of catalyst therein not enough.Thereby, in the tail gas catalyzed system of prior art, in catalyst converter tank 120
The catalytic capability of catalyst in the not enough switching and catalytic capability surplus between of catalytic capability, causes the catalysis when tail gas amount is few all the time
The waste of ability, cannot sufficiently be processed in tail gas amount tail gas of many whens simultaneously, and then be led to atmosphere pollution.
In the present invention, by when tail gas amount is excessive, partial tail gas compression being stored in tail gas storage tank 220,
When tail gas amount is less, suitably the tail gas in tail gas storage tank 220 is discharged, thereby, all can fill in the full rotary speed area of engine
Divide effectively utilizes catalyst ability.
Hereinafter, with reference to Fig. 9, the tail gas catalyzed control method of the present invention is described in detail.
Fig. 9 is the control flow chart of the tail gas catalyzed system of embodiment of the present invention.
As shown in figure 9, electricity (that is, rotating car key, make engine be energized) afterwards (step S100), makes compression pump on vehicle
B works, and closes heater circuit switch d, controllable valve j, opens open-close type valve m, and makes activate switch lose efficacy (step S200).
Next, it is determined that whether the air themperature in the tail gas storage tank 220 being detected by temperature sensor i reaches catalyst
Activation temperature (such as 300 DEG C) (step S310).
In activation temperature (being judged as "No" in step S310) being judged as not yet reaching catalyst, return to step
S200.
When the activation temperature that the air themperature being judged as in tail gas storage tank 220 reaches catalyst (judges in step S310
For "Yes") after, stop compression pump b, and heater circuit is switched d, controllable valve j opens (step S320).Then, startup is made to open
Close effectively (step S330).
Then, whether engine E is actuated for judge (step S400).
If engine E not yet starts (being judged as "No" in step S400), return to step S200.
If engine E starts (being judged as "Yes" in step S400), so that compression pump b is worked, and heater circuit is switched
D, controllable valve j and open-close type valve m close (step S510).
Next, it is determined that whether the exhaust temperature in the tail gas storage tank 220 being detected by temperature sensor i reaches catalyst
Activation temperature (such as 300 DEG C) (step S520).
In activation temperature (being judged as "No" in step S520) being judged as not yet reaching catalyst, return to step
S510.
When the activation temperature that the air themperature being judged as in tail gas storage tank 220 reaches catalyst (judges in step S520
For "Yes") after, after the T1 time, controllable valve j is opened (step S530) with initial angle.
Then, (step S540) is judged to the exhaust flow γ at offgas duct B and the relation between theoretical delivery θ.
When being judged as the γ of the exhaust flow at offgas duct B≤theoretical delivery θ (being judged as "No" in step S540), increase
The aperture (step S541) of big controllable valve j.
When being judged as exhaust flow γ ＞ theoretical delivery θ (being judged as "Yes" in step S540) at offgas duct B, subtract
The aperture (step S542) of little controllable valve j.
Then, whether idling is in engine E and is judged (step S600).
When being judged as that engine is in idling mode (being judged as "Yes" in step S600), return to step S510.
When being judged as that engine is in non-idle (being judged as "No" in step S600), controllable valve m is beaten
Open (step S710).
Then, (step S720) is judged to the exhaust flow β at offgas duct A and the relation between theoretical delivery θ.
In exhaust flow β ＞ theoretical delivery θ (being judged as "Yes" in step S720) at offgas duct A, make compression pump b
With initial flow action, and heater circuit switch d is opened, controllable valve j is closed (step S721A).
Then, (step S730A) is judged to the exhaust flow γ at offgas duct B and the relation between theoretical delivery θ.
When being judged as the γ of the exhaust flow at offgas duct B≤theoretical delivery θ (being judged as "No" in step S730A),
Reduce the pumping compressed capability (step S731A) of compression pump b.
When being judged as exhaust flow γ ＞ theoretical delivery θ (being judged as "Yes" in step S730A) at offgas duct B,
Increase the pumping compressed capability (step S732A) of compression pump b.
Next, it is determined that whether pressure value M that pressure sensor g records exceedes the limiting pressure of tail gas storage tank 220 carrying
Value P (step S740A).
Pressure value M recording in pressure sensor g exceedes the limit pressure P (step of tail gas storage tank 220 carrying
It is judged as "Yes" in S740A) when, open safety relief valve c (step S741A), the shutdown then carrying out vehicle judges (step
S750).
Pressure value M recording in pressure sensor g is not above the limit pressure P (step of tail gas storage tank 220 carrying
It is judged as "No" in S740A) when, the shutdown directly carrying out vehicle judges (step S750).
(it is judged as in step S750 if it is determined that being not in vehicle and shutting down (that is, vehicle is not in switch-off) state
"No"), then return to step S720.
Whereas if vehicle is in switch-off state (being judged as "Yes" in step S750), then terminate whole controlling stream
Journey.
On the other hand, in exhaust flow β≤theoretical delivery θ (being judged as "No" in step S720) at offgas duct A,
So that compression pump b is quit work (step S721B), then make controllable valve j open (step S722B) with initial angle.
Then, (step S730B) is judged to the exhaust flow γ at offgas duct B and the relation between theoretical delivery θ.
When being judged as the γ of the exhaust flow at offgas duct B≤theoretical delivery θ (being judged as "No" in step S730B),
Increase the aperture (step S731B) of controllable valve j.
When being judged as exhaust flow γ ＞ theoretical delivery θ (being judged as "Yes" in step S730B) at offgas duct B,
Reduce the aperture (step S732B) of controllable valve j.
Then, the shutdown carrying out vehicle judges (step S750).
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that implementing of the present invention is not subject to above-mentioned reality
Apply the restriction of mode.Those of ordinary skill in the art will be readily apparent other advantages and modification.Therefore, in its wider range of side
For on face, the present invention is not limited to detail shown and described herein and representative embodiment.Therefore, it can not
Make on the premise of departing from the spirit or scope of this general inventive concept that such as appended claims and its equivalent are limited
Various modifications.
For example, in the above-described embodiment, show that heater circuit includes heater circuit switch d, metal-oxide-semiconductor current amplifier
E, the situation of resistance wire f, but the present invention is not limited to this, as long as heater circuit can be to the air/tail gas in tail gas storage tank
Heated, then the structure of heater circuit is not limited by embodiment of the present invention.
For example, in the above-described embodiment, show after the exhaust temperature in tail gas storage tank 220 reaches 300 DEG C, etc.
Treat stipulated time T1, and after above-mentioned stipulated time T1, make controllable valve j carry out switch motion, but the present invention not office
It is limited to this it is also possible to be not to wait for stipulated time T1, and make controllable valve j carry out switch motion.
Claims (9)
1. a kind of tail gas catalyzed system (10) is it is characterised in that include：
Tail gas stream (100), is provided with offgas duct (110), catalyst converter tank (120) and exhaust emissions in this tail gas stream (100)
Pipe (130), wherein, one end of above-mentioned offgas duct (110) is connected with the exhaust port of engine (E), above-mentioned offgas duct (110)
The other end is connected with one end of described catalyst converter tank (120), stores catalyst, described tail in described catalyst converter tank (120)
Gas delivery pipe (130) will be discharged through the tail gas after the catalyst in catalyst converter tank (120)；And
Tail gas heating bypasses (200), is provided with tail gas heating air inlet pipe (210), tail gas storage in this tail gas heating bypass (200)
Tank (220) and heating exhaust pipe (230), wherein, one end of described tail gas heating air inlet pipe (210) and described tail gas stream
(100) part of exhaust port side described offgas duct (110), leaning on described engine (E) connects, described tail gas heating
The other end of air inlet pipe (210) is connected with described tail gas storage tank (220), described heating exhaust pipe (230) one end with
Described tail gas storage tank (220) connection, the other end of described heating exhaust pipe (230) and described tail gas stream (100)
Part offgas duct (110), leaning on described catalyst converter tank (120) side connects,
In described tail gas heating bypass (200), the midway of described tail gas heating air inlet pipe (210) is provided with first unidirectional section
Only valve (a),
Described tail gas heating air inlet pipe (210), than described first unidirectional stop valve (a) more lean on and described tail gas storage tank
(220), at the position of the coupling part connecting, it is provided with compression pump (b),
It is provided with controllable valve (j) in described tail gas storage tank (220),
It is provided with heater circuit in the described tail gas storage tank (220) of described tail gas heating bypass (200),
Described tail gas storage tank (220) in described engine (E) power up phase, using described compression pump (b) to described offgas duct
(110) air retaining in is collected, and utilizes described heater circuit, will be collected in described tail gas storage tank (220)
Air discharges after being heated to activation temperature to described catalyst converter tank (120),
Described tail gas storage tank (220) described engine (E) start, the idling stage, using described compression pump (b) to from described
Whole tail gas that the exhaust port of engine (E) enters in described offgas duct (110) are collected, and using described heating electricity
Road, will be collected in tail gas heating in described tail gas storage tank (220) to activation temperature, by based at primary importance (B) place
Exhaust flow (γ) and theoretical delivery (θ) between described catalyst converter tank (120) determined by relation in catalyst catalysis
Scarce capacity or the state of surplus, to adjust the aperture of described controllable valve (j), so that catalytic effect is optimal,
Described tail gas storage tank (220) when described engine (E) runs well, according to based at the second place (A) place
The catalysis energy of the catalyst in described catalyst converter tank (120) determined by the relation between exhaust flow (β) and theoretical delivery (θ)
Power, to adjust the exhaust capacity of described compression pump (b) and the aperture of described controllable valve (j), to collect the row from engine (E)
The tail gas that gas port is discharged or release is collected in tail gas in described tail gas storage tank (220).
2. as claimed in claim 1 tail gas catalyzed system (10) it is characterised in that
Described heater circuit includes heater circuit switch (d), metal-oxide-semiconductor current amplifier (e) and resistance wire (f).
3. as claimed in claim 1 tail gas catalyzed system (10) it is characterised in that
In tail gas stream (100), than the described tail gas heating air inlet pipe (210) with described tail gas heating bypass (200) even
The coupling part connecing, at the position in downstream, is provided with open-close type valve (m).
4. as claimed in claim 3 tail gas catalyzed system (10) it is characterised in that
It is additionally provided with machine security relief valve (c), pressure sensor (g) and TEMP in described tail gas storage tank (220)
Device (i),
The midway of described heating exhaust pipe (230) is provided with the second unidirectional stop valve (k).
5. a kind of tail gas catalyzed control method, usage right requires the tail gas catalyzed system (10) described in 4 that the catalysis of tail gas is entered
Row control it is characterised in that
Before starting in the upper electricity of described engine (E) and not yet, using the compression of described compression pump (b) or using described
The compression of compression pump (b) and the heat effect of described heater circuit, come to being stored in described tail gas storage tank (220)
Air is heated,
When air themperature in described tail gas storage tank (220) is higher than the activation temperature of described catalyst, described tail gas is deposited
The air of storage tank (220) is introduced into described catalyst converter tank (120) and the catalyst in described catalyst converter tank (120) is heated.
6. as claimed in claim 5 tail gas catalyzed control method it is characterised in that
In described engine (E) startup, idling, described open-close type valve (m) is closed,
Compression using described compression pump (b) or the compression using described compression pump (b) and described heater circuit
Heat effect, the tail gas being stored in described tail gas storage tank (220) is heated,
After the exhaust temperature in described tail gas storage tank (220) reaches 300 DEG C, wait the stipulated time (T1), through described
After stipulated time (T1), described controllable valve (j) is made to carry out switch motion,
The switch motion of described controllable valve (j) is by the primary importance (B) of described offgas duct, i.e. positioned at described tail gas stream
(100), more lean on than with the coupling part that is connected of described heating exhaust pipe (230) of described tail gas heating bypass (200)
Relation between the exhaust flow (γ) of the position in exhaust gas flow downstream and the optimal theoretical delivery (θ) of catalytic effect carrying out,
When the exhaust flow (γ) of the primary importance (B) of described offgas duct is less than described theoretical delivery (θ), it is gradually increased described
The aperture of controllable valve (j),
When the exhaust flow (γ) of the primary importance (B) of described offgas duct is more than described theoretical delivery (θ), it is gradually reduced institute
State the aperture of controllable valve (j).
7. as claimed in claim 5 tail gas catalyzed control method it is characterised in that
When engine (E) is in normal operation, described open-close type valve (m) is opened,
The second place (A) in described offgas duct (110), i.e. be located at described tail gas stream (100), than and described tail gas heating
The tail of the position of exhaust gas flow upstream side is more leaned in the coupling part that the described tail gas heating air inlet pipe (210) of bypass (200) connects
When throughput (β) is more than described theoretical delivery (θ), it is judged as that the catalytic capability of the catalyst of described catalyst converter tank (120) is not enough,
When the exhaust flow (β) of the second place (A) in described offgas duct (110) is less than described theoretical delivery (θ), it is judged as institute
The catalytic capability stating the catalyst of catalyst converter tank (120) is superfluous.
8. as claimed in claim 7 tail gas catalyzed control method it is characterised in that
When described catalytic capability is not enough,
By the relation between the exhaust flow (γ) of the primary importance (B) of described offgas duct (110) and described theoretical delivery (θ),
To control the exhaust capacity of described compression pump (b),
When the exhaust flow (γ) of the primary importance (B) in described offgas duct (110) is more than described theoretical delivery (θ), increase institute
State the exhaust capacity of compression pump (b),
The exhaust flow (γ) of the primary importance (B) in described offgas duct (110) be described theoretical delivery (θ) below when, reduce
The exhaust capacity of described compression pump (b),
When described catalytic capability is superfluous,
By the relation between the exhaust flow (γ) of the primary importance (B) of described offgas duct (110) and described theoretical delivery (θ),
To control the aperture of described controllable valve (j),
When the exhaust flow (γ) of the primary importance (B) of described offgas duct is less than described theoretical delivery (θ), it is gradually increased described
The aperture of controllable valve (j),
When the exhaust flow (γ) of the primary importance (B) of described offgas duct is more than described theoretical delivery (θ), it is gradually reduced institute
State the aperture of controllable valve (j).
9. the tail gas catalyzed control method as any one of claim 5 to 8 it is characterised in that
The pressure value (M) detecting in the pressure sensor (g) located at described tail gas storage tank (220) is more than described tail gas storage
During utmost carrying ability pressure value (P) of tank (220), open described machine security relief valve (c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510915.7A CN104265423B (en) | 2014-09-29 | 2014-09-29 | Tail gas catalysis system and tail gas catalysis control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510915.7A CN104265423B (en) | 2014-09-29 | 2014-09-29 | Tail gas catalysis system and tail gas catalysis control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104265423A CN104265423A (en) | 2015-01-07 |
| CN104265423B true CN104265423B (en) | 2017-02-15 |
Family
ID=52156981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410510915.7A Expired - Fee Related CN104265423B (en) | 2014-09-29 | 2014-09-29 | Tail gas catalysis system and tail gas catalysis control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265423B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10690072B2 (en) * | 2016-10-19 | 2020-06-23 | Ford Global Technologies, Llc | Method and system for catalytic conversion |
| CN113006906B (en) * | 2021-03-31 | 2022-03-11 | 奇瑞汽车股份有限公司 | Exhaust gas heating device, exhaust gas heating method and automobile |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004052107A1 (en) * | 2004-10-26 | 2006-05-04 | J. Eberspächer GmbH & Co. KG | Operation of an exhaust system for a motor vehicle, comprises loading an internal-combustion engine by a latent heat reservoir and preheating the engine by an oxidation catalyst from the reservoir |
| CN101578433A (en) * | 2007-05-14 | 2009-11-11 | 丰田自动车株式会社 | Exhaust gas purifying apparatus for internal combustion engine |
| CN103277173A (en) * | 2013-01-18 | 2013-09-04 | 贵州黄帝车辆净化器有限公司 | Control system and control method for temperature rising of diesel engine exhaust aftertreatment device |
| CN103711551A (en) * | 2013-01-23 | 2014-04-09 | 日立汽车部件（苏州）有限公司 | Vehicle exhaust treatment device and engine system |
| CN103835788A (en) * | 2014-02-28 | 2014-06-04 | 长城汽车股份有限公司 | Exhaust system applied to vehicle and vehicle provided with exhaust system |
| CN203685355U (en) * | 2013-12-31 | 2014-07-02 | 高志男 | Automatic heating device for automotive tail gas emission |
| CN204099006U (en) * | 2014-09-29 | 2015-01-14 | 日立汽车系统(苏州）有限公司 | Tail gas catalyzed system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06212958A (en) * | 1993-01-14 | 1994-08-02 | Hitachi Ltd | Internal combustion engine with exhaust gas purifying mechanism |
| JPH0988568A (en) * | 1995-09-26 | 1997-03-31 | Toyota Motor Corp | Exhaust device for internal combustion engine |
| JPH10252449A (en) * | 1997-03-13 | 1998-09-22 | Nissan Motor Co Ltd | Exhaust cleaning device for internal combustion engine |
| JP2010229820A (en) * | 2009-03-25 | 2010-10-14 | Nippon Soken Inc | Exhaust emission control device for internal combustion engine |
| SE1150155A1 (en) * | 2010-05-04 | 2011-11-05 | Alpraaz Ab | Exhaust system for an internal combustion engine |
-
2014
- 2014-09-29 CN CN201410510915.7A patent/CN104265423B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004052107A1 (en) * | 2004-10-26 | 2006-05-04 | J. Eberspächer GmbH & Co. KG | Operation of an exhaust system for a motor vehicle, comprises loading an internal-combustion engine by a latent heat reservoir and preheating the engine by an oxidation catalyst from the reservoir |
| CN101578433A (en) * | 2007-05-14 | 2009-11-11 | 丰田自动车株式会社 | Exhaust gas purifying apparatus for internal combustion engine |
| CN103277173A (en) * | 2013-01-18 | 2013-09-04 | 贵州黄帝车辆净化器有限公司 | Control system and control method for temperature rising of diesel engine exhaust aftertreatment device |
| CN103711551A (en) * | 2013-01-23 | 2014-04-09 | 日立汽车部件（苏州）有限公司 | Vehicle exhaust treatment device and engine system |
| CN203685355U (en) * | 2013-12-31 | 2014-07-02 | 高志男 | Automatic heating device for automotive tail gas emission |
| CN103835788A (en) * | 2014-02-28 | 2014-06-04 | 长城汽车股份有限公司 | Exhaust system applied to vehicle and vehicle provided with exhaust system |
| CN204099006U (en) * | 2014-09-29 | 2015-01-14 | 日立汽车系统(苏州）有限公司 | Tail gas catalyzed system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104265423A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102159068B1 (en) | Method and apparatus for post-treatment of exhaust gas from internal combustion engine | |
| CN102165152B (en) | Control of the regeneration of a particulate filter | |
| CN103502619B (en) | Internal-combustion engine system | |
| CN103883380B (en) | The control method of engine exhaust temperature and system | |
| JP4730352B2 (en) | Exhaust gas purification device for compression ignition type internal combustion engine | |
| CA2715088A1 (en) | Method and device for producing compressed air and for injecting the same into an internal combustion engine | |
| JP6540675B2 (en) | Automobile | |
| JP2004019496A (en) | Exhaust emission control device of internal combustion engine | |
| US20080011866A1 (en) | Method and device for heating a motor vehicle cabin | |
| US8978370B2 (en) | Engine off particulate filter (“PF”) regeneration using a single secondary energy storage device | |
| JP4574395B2 (en) | Exhaust gas purification device having particulate filter regeneration function, internal combustion engine equipped with the exhaust gas purification device, and particulate filter regeneration method | |
| KR20120054314A (en) | Exhaust gas post processing system | |
| CN108729986A (en) | The vehicle-mounted soot cleaning systems of diesel engine DPF based on Brake energy recovery and control method | |
| CN104265423B (en) | Tail gas catalysis system and tail gas catalysis control method | |
| CN106640398B (en) | A kind of device and control method shortening triple effect catalytic converter light-off time | |
| CN204099006U (en) | Tail gas catalyzed system | |
| CN102312705B (en) | Hydrocarbon adsorber regeneration system | |
| JP6571172B2 (en) | Powertrain with electric compressor and control method of powertrain with electric compressor | |
| CN106795792B (en) | The regeneration method of exhaust gas post-treatment device in engine driving type compressor and the engine driving type compressor for having the after-treatment device | |
| US10473016B2 (en) | Exhaust purification device of engine | |
| JP2007278252A (en) | Turbocharger control unit | |
| JP2003307117A (en) | Exhaust emission control device of internal combustion engine | |
| CN103758614A (en) | Automatic regeneration system and regeneration method of DPF (Diesel Particulate Filter) | |
| CN201236737Y (en) | Novel diesel engine reprocessing system | |
| JP2007162486A (en) | Control device for diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20170215 Termination date: 20190929 |