CN204099010U - Engines tail gas processing system - Google Patents

Engines tail gas processing system Download PDF

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Publication number
CN204099010U
CN204099010U CN201420568099.0U CN201420568099U CN204099010U CN 204099010 U CN204099010 U CN 204099010U CN 201420568099 U CN201420568099 U CN 201420568099U CN 204099010 U CN204099010 U CN 204099010U
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China
Prior art keywords
way valve
catalyst converter
tail gas
communicated
exhaust port
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CN201420568099.0U
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Chinese (zh)
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赵安成
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Hitachi Astemo Automotive Systems Suzhou Ltd
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Hitachi Automotive Systems Suzhou Ltd
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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
    • 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

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  • Exhaust Gas After Treatment (AREA)

Abstract

A kind of engines tail gas processing system, can catalyzer in catalyst converter nonactive before make tail gas not be discharged to air, after catalyst activity, make tail gas be discharged to air after the abundant catalysis of catalyst converter.Described system comprises the first three-way valve, the second three-way valve, the 3rd three-way valve and electromagnet cut off valve.Described electromagnet cut off valve is arranged on the close catalyst converter side of offgas duct.An exhaust port of the first three-way valve is communicated with the air inlet port of the second three-way valve, another exhaust port of first three-way valve is communicated with the air inlet port of the second three-way valve, the exhaust port of the second three-way valve is communicated with the suction port of catalyst converter, the exhaust port of the second three-way valve is communicated with the suction port of motor, the relief opening of motor is communicated with the air inlet port of the 3rd three-way valve, the exhaust port of the 3rd three-way valve is communicated with the suction port of catalyst converter, and the exhaust port of the 3rd three-way valve is communicated with the air inlet port of the second three-way valve.

Description

Engines tail gas processing system
Technical field
The utility model relates to a kind of engines tail gas processing system, specifically, relates to a kind of engines tail gas processing system that can carry out different disposal to the tail gas before catalyst activity and after catalyst activity.
Background technique
In the past, as the measure of engines tail gas disposal, such as, in patent documentation 1 (Japanese Patent Laid-fair 6-6901), disclose a kind of making and pass through at the tail gas in cylinder after burning the catalyst converter being arranged on offgas duct midway, after the tail gas flow through being purified to utilize catalyst converter, be discharged to the structure of air.
But as everyone knows, be in inactive state for the catalyzer in the catalyst converter that purifies motor exhaust specified temp (such as, 300 DEG C) is front, its catalytic efficiency is low.When motor just starts, because catalyzer not yet activates, therefore, through catalyst cleaning not fully in catalyzed device of the tail gas of catalyst converter, thus make the tail gas be not sufficiently purified enter air, air is polluted.
Therefore, how to make tail gas not be discharged to air before catalyzer is nonactive, the technical problem making tail gas be discharged to air after catalyst activity after the abundant catalysis of catalyst converter just to become urgently to be resolved hurrily.
Model utility content
The utility model is done in view of above-mentioned prior art Problems existing, its object is to provide a kind of engines tail gas processing system, its can catalyzer in catalyst converter nonactive before make tail gas not be discharged to air, after catalyst activity, make tail gas be discharged to air after the abundant catalysis of catalyst converter.
The engines tail gas processing system of the utility model first aspect, comprises motor, catalyst converter and offgas duct, it is characterized in that, comprising: the first three-way valve, and this first three-way valve has an air inlet port and two exhaust ports, second three-way valve, this second three-way valve has two air inlet ports and two exhaust ports, 3rd three-way valve, this first three-way valve has an air inlet port and two exhaust ports, and electromagnet cut off valve, this electromagnet cut off valve is arranged on the close catalyst converter side of offgas duct, an exhaust port of described first three-way valve was communicated with the air inlet port of described second three-way valve by the first connecting tube, another exhaust port of described first three-way valve is by the first engine driven supercharging suction tude, and be communicated with the air inlet port of described second three-way valve via engine driven supercharging mechanism, an exhaust port of described second three-way valve is communicated with the suction port of described catalyst converter by the first catalyst converter suction tude, another exhaust port of described second three-way valve is communicated with the suction port of described motor by suction tude, the relief opening of described motor is communicated with the air inlet port of described 3rd three-way valve by outlet pipe, an exhaust port of described 3rd three-way valve is communicated with the suction port of catalyst converter by the second catalyst converter suction tude, another exhaust port of 3rd three-way valve is by the second engine driven supercharging suction tude, and be communicated with the air inlet port of the second three-way valve via engine driven supercharging.
The engines tail gas processing system of the utility model second aspect is on the basis of the engines tail gas processing system of the utility model first aspect, it is characterized in that, near the concourse being positioned at the described first catalyst converter suction tude of described catalyst converter upstream, described second catalyst converter suction tude, be provided with catalyst converter side pressure sensor, the pressure of this catalyst converter side pressure sensor to described catalyst converter upstream side measures.
The engines tail gas processing system of the utility model third aspect is on the basis of the engines tail gas processing system of the utility model second aspect, it is characterized in that, 4th three-way valve, described in the ratio that 4th three-way valve is arranged on described offgas duct, electromagnet cut off valve is further from the downstream side of described catalyst converter, and has an air inlet port and two exhaust ports; And storage tank, this storage tank is arranged on the downstream side of an exhaust port of described 4th three-way valve, the air inlet port of described 4th three-way valve is communicated with described catalyst converter via described offgas duct, an exhaust port of described 4th three-way valve is communicated with described storage tank via tail gas recycle pipe, and another exhaust port of described 4th three-way valve is communicated with outside atmosphere via tail gas discharging pipe.
The engines tail gas processing system of the utility model fourth aspect is on the basis of the engines tail gas processing system of the utility model third aspect, it is characterized in that, described storage tank is provided with compressor pump, storage tank side pressure sensor, pressure regulator valve and Decompression valves, described compressor pump compresses the tail gas be stored in described storage tank, the pressure of described pressure transducer to the tail gas being stored in described storage tank measures, described pressure regulator valve makes described storage tank be communicated with the suction port of described catalyst converter by the 3rd catalyst converter suction tude, described Decompression valves makes the tail gas in storage tank discharge via relief tube.
The engines tail gas processing system of the utility model the 5th aspect is on the basis of the engines tail gas processing system of the utility model fourth aspect, it is characterized in that, tail gas enters described catalyst converter via described first catalyst converter suction tude, described first catalyst converter suction tude and described first catalyst converter suction tude.
According to engine exhaust gas processing unit of the present utility model, before catalyst activity, make the waste gas of discharge through engine driven supercharging mechanism (case turbocharging mechanism), and compress in catalyst converter inside, to make exhaust temperature raise, reach the effect shortening catalyzer soak time.In addition, when catalyst converter side pressure sensor detects that catalyst converter internal pressure is too high, electromagnet cut off valve is opened, tail gas is made to be stored in storage tank through the primary importance of two position three-way valve (the 4th three-way valve), and solenoid valve is according to the continuous opening and closing of the signal of pressure transducer, pressurize to make waste gas rapid preheating catalyst after heating up, simultaneously, before catalyzer is nonactive, tail gas through catalyst converter can not directly be discharged to the outside, but be collected in storage tank, by this, avoid the air without catalytic purification process to pollute air.
On the other hand, according to engine exhaust gas processing unit of the present utility model and motor exhaust processing method, after catalyst activity, make tail gas through catalyst converter, after purification, be directly discharged to air by the catalyst after wherein activating.Meanwhile, be collected in tail gas in storage tank also according to the signal of catalyst converter side pressure sensor, the waste gas in storage tank is entered catalyst converter via the 3rd catalyst converter suction tude, and after purification, be discharged to air by the catalyst after wherein activating.
By this, can catalyzer in catalyst converter nonactive before make tail gas not be discharged to air, after catalyst activity, make tail gas be discharged to air after the abundant catalysis of catalyst converter.
Accompanying drawing explanation
Fig. 1 is the schematic configuration diagram representing engines tail gas processing system of the present utility model.
Fig. 2 is the flow chart of the motor exhaust processing method represented when utilizing engines tail gas processing system of the present utility model to process tail gas.
Embodiment
Below, with reference to Fig. 1, engines tail gas processing system of the present utility model is described in detail.
Fig. 1 is the schematic configuration diagram representing engines tail gas processing system of the present utility model.
As shown in Figure 1, engines tail gas processing system 1 comprises two position three-way valve V1 (the first three-way valve), two position three-way valve V2 (the second three-way valve), two position three-way valve V3 (the 3rd three-way valve), catalyst converter CAT, electromagnet cut off valve V4, two position three-way valve V5 (the 4th three-way valve) and storage tank T.
Two position three-way valve V1 (the first three-way valve) has an air inlet port I 11with two exhaust port O 11, O 12, when two position three-way valve V1 is switched to A position, air inlet port I 11with exhaust port O 11be communicated with, when two position three-way valve V1 is switched to B position, air inlet port I 11with exhaust port O 12be communicated with.
Two position three-way valve V2 (the second three-way valve) has two air inlet port I 21, I 22with two exhaust port O 21, O 22, when two position three-way valve V2 is switched to A position, air inlet port I 21with exhaust port O 22be communicated with, air inlet port I 22with exhaust port O 21be communicated with, when two position three-way valve V2 is switched to B position, air inlet port I 22with exhaust port O 22be communicated with.
Two position three-way valve V3 (the 3rd three-way valve) has an air inlet port I 31with two exhaust port O 31, O 32, when two position three-way valve V3 is switched to A position, air inlet port I 31with exhaust port O 32be communicated with, when two position three-way valve V3 is switched to B position, air inlet port I 31with exhaust port O 31be communicated with.
Two position three-way valve V5 (the 4th three-way valve) has an air inlet port I 51with two exhaust port O 51, O 52, when two position three-way valve V5 is switched to A position, air inlet port I 51with exhaust port O 51be communicated with, when two position three-way valve V5 is switched to B position, air inlet port I 51with exhaust port O 52be communicated with.
The exhaust port O of the first three-way valve V1 11by the first connecting tube CP 1and with the air inlet port I of the second three-way valve V2 21be communicated with, the exhaust port O of the first three-way valve V1 12by the first engine driven supercharging suction tude DP 1, and via engine driven supercharging mechanism EDS with the air inlet port I of the second three-way valve V2 22be communicated with.
The exhaust port O of the second three-way valve V2 21by the first catalyst converter suction tude CIP 1and be communicated with the suction port of catalyst converter CAT, the exhaust port O of the second three-way valve V2 22be communicated with the suction port of motor E by suction tude IP.
The relief opening of motor E by outlet pipe OP with the air inlet port I of the 3rd three-way valve V3 31be communicated with.
The exhaust port O of the 3rd three-way valve V3 31by the second catalyst converter suction tude CIP 2and be communicated with the suction port of catalyst converter CAT, the exhaust port O of the 3rd three-way valve V3 32by the second engine driven supercharging suction tude DP 2, and via engine driven supercharging mechanism EDS with the air inlet port I of the second three-way valve V2 22be communicated with.
The relief opening of catalyst converter CAT passes through the air inlet port I of offgas duct GP and the 4th three-way valve V5 51be communicated with.
Electromagnet cut off valve V4 is arranged on the midway of catalyst converter CAT and the 4th three-way valve V5, to allow or to stop the tail gas through catalyst converter CAT to move to downstream effluent further.
The exhaust port O of the 4th three-way valve V5 51be communicated with the suction port of storage tank T, the exhaust port O of the 4th three-way valve V5 by tail gas recycle pipe GRP 52be communicated with outside atmosphere by tail gas discharging pipe GDP.
Storage tank T is provided with compressor pump P, pressure transducer (storage tank side pressure sensor) S2, pressure regulator valve V6 and Decompression valves V7, wherein, above-mentioned compressor pump P is used for compressing the tail gas be stored in wherein, above-mentioned pressure transducer S2 is used for measuring the pressure of the tail gas be stored in wherein, and above-mentioned pressure regulator valve V6 can make storage tank T by the 3rd catalyst converter suction tude CIP 3and be communicated with the suction port of catalyst converter CAT, above-mentioned Decompression valves V7 can make the tail gas in storage tank T discharge via relief tube RP.
Be positioned at the first catalyst converter suction tude CIP of catalyst converter CAT upstream 1, the second catalyst converter suction tude CIP 2, the 3rd catalyst converter suction tude CIP 3concourse near be provided with pressure transducer (pressure of storage tank sensor) S1, for measuring the gas pressure of catalyst converter CAT upstream end.
Below, with reference to Fig. 2, motor exhaust processing method of the present utility model is described in detail.
As shown in Figure 2, after motor E sends activating signal (step S100), the first three-way valve V1 is switched to B position, and the second three-way valve V2 is switched to B position, and the 3rd three-way valve V3 is switched to B position (step S200).
Now, motor E carries out light a fire (step S300), and then, the electronic control unit (ECU) of motor E judges whether motor E starts successfully (step S400).
If ECU judges that motor E does not have Successful startup (being judged as "No" in step S400), then carry out controlling (step S310) in conjunction with starting failure strategy.
If ECU judges motor E Successful startup (being judged as "Yes" in step S400), then judge whether catalyzer is activated state (step S500).
If catalyzer is in inactive state (being judged as "No" in step S500), then the 4th three-way valve V5 is switched to A position (step S610A), then pressure regulator valve V6 and Decompression valves V7 is closed (step S620A), and make compressor pump P start (step S630A).
Then, the first three-way valve V1, the second three-way valve V2 and the 3rd three-way valve V3 are all switched to A position (step S640A).Now, air is from the exhaust port O of the first three-way valve V1 11via the first connecting tube CP 1, suction tude IP enters in motor E, and within the engine with fuel oil mixed combustion after, tail gas is via outlet pipe OP, the second engine driven supercharging suction tude DP 2enter the first catalyst converter suction tude CIP 1.
Then, catalyst converter side pressure sensor S1 judges whether the gas pressure of catalyst converter CAT upstream end exceedes critical value (step S650A).If the gas pressure of catalyst converter CAT upstream end does not exceed critical value (being judged as "No" in step S650A), then electromagnet cut off valve V4 is closed (step S651A), now, tail gas is accumulated in the upstream side of the electromagnet cut off valve V4 of offgas duct GP.
Along with the tail gas amount of accumulation gets more and more, when the gas pressure of catalyst converter CAT upstream end exceedes critical value (being judged as "Yes" in step S650A), electromagnet cut off valve V4 is opened (step S660A).Now, because the 4th three-way valve V5 is switched to A position, therefore, tail gas can be entered in storage tank T to be accumulated, and utilizes compressor pump P to compress the tail gas entering into storage tank T simultaneously.
Then, judge whether the pressure of storage tank side pressure sensor S2 exceedes critical value (S670A).If the pressure of storage tank side pressure sensor S2 exceedes critical value (being judged as "Yes" in step S670A), then opened (step S671A) by Decompression valves V7, now, tail gas can be discharged to the outside by relief tube RP.
If the pressure of storage tank side pressure sensor S2 does not exceed critical value (being judged as "No" in step S670A), then close Decompression valves V7 or keep Decompression valves V7 to close (step S680A).
Then, judge that now motor is with or without stop signal (step S700), if motor has stop signal (being judged as "Yes" in step S700), then the first three-way valve V1 is switched to B position, second three-way valve V2 is switched to B position, 3rd three-way valve V3 is switched to B position, and electromagnet cut off valve V4 closes, and the 4th three-way valve V5 is switched to B position (step S800).
Then, compressor pump P (step S910) is stopped, and closing pressure-regulating valve V6 and Decompression valves V7 (step S920), finally enter the shutdown mode (S930) of motor.
In step S700, if motor does not have stop signal (being judged as "No" in step S700), then get back to step S500, again judge whether catalyzer is activated state.
If catalyzer is still in inactive state, then proceed to control to judge according to step S610 ~ S680.
If catalyzer is in active state (being judged as "Yes" in step S500), then the 4th three-way valve V5 is switched to B position (step S610B), then electromagnet cut off valve V4 is opened (step S620B), and make compressor pump P stop (step S630B).
Then, the first three-way valve V1, the second three-way valve V2 and the 3rd three-way valve V3 are all switched to B position (step S640B).Now, air is from the exhaust port O of the first three-way valve V1 12via the first engine driven supercharging suction tude DP 1, suction tude IP enters in motor E, and within the engine with fuel oil mixed combustion after, tail gas enters the second catalyst converter suction tude CIP via outlet pipe OP 2.
Now, because the 4th three-way valve V5 is switched to B position, therefore, tail gas can be directly discharged to the outside by tail gas discharging pipe GDP.
Then, storage tank side pressure sensor S2 judges whether still store tail gas in storage tank T, namely judges whether the checkout value of storage tank side pressure sensor S2 is 0 (step S650B).
If the pressure in storage tank T is 0 (being judged as "Yes" in step S650B), then closing pressure-regulating valve V6 (step S670B).If the pressure in storage tank T is not 0, when namely still storing tail gas in storage tank T, utilize the gas pressure of catalyst converter side pressure sensor S1 to catalyst converter CAT upstream end whether to exceed critical value and judge (step S660B).
If the gas pressure of catalyst converter CAT upstream end exceedes critical value (being judged as in step S660B " having "), then closing pressure-regulating valve V6 (step S670B).
If the gas pressure of catalyst converter CAT upstream end does not exceed critical value (being judged as in step S660B " not having "), then open pressure regulator valve V6 (step S681B), then, in conjunction with the aperture (step S682B) of the signal Collaborative Control pressure regulator valve V6 of catalyst converter side pressure sensor S1.
Then, judge that now motor is with or without stop signal (step S700), if motor has stop signal (being judged as "Yes" in step S700), then the first three-way valve V1 is switched to B position, second three-way valve V2 is switched to B position, 3rd three-way valve V3 is switched to B position, and electromagnet cut off valve V4 closes, and the 4th three-way valve V5 is switched to B position (step S800).
Then, compressor pump P (step S910) is stopped, and closing pressure-regulating valve V6 and Decompression valves V7 (step S920), finally enter the shutdown mode (S930) of motor.
Engine exhaust gas processing unit according to the present embodiment and motor exhaust processing method, before catalyst activity, control gear controls (tail gas collected by exhaust compression+storage tank) each valve V1 ~ V7 with the flow process of step S610A ~ S680A, thus make the waste gas of discharge through engine driven supercharging mechanism (case turbocharging mechanism) EDS, and compress in catalyst converter inside, to make exhaust temperature raise, reach the effect shortening catalyzer soak time.In addition, when catalyst converter side pressure sensor S1 detects that catalyst converter internal pressure is too high, electromagnet cut off valve V4 is opened, tail gas is made to be stored in storage tank T through the A position of two position three-way valve (the 4th three-way valve) V5, and solenoid valve V4 is according to the continuous opening and closing of the signal of pressure transducer S1, pressurize to make waste gas rapid preheating catalyst after heating up, simultaneously, before catalyzer is nonactive, tail gas through catalyst converter can not directly be discharged to the outside, but be collected in storage tank, by this, avoid the air without catalytic purification process to pollute air.
On the other hand, engine exhaust gas processing unit according to the present embodiment and motor exhaust processing method, after catalyst activity, control gear controls (air inlet compression+storage tank release tail gas) each valve V1 ~ V6 with the flow process of step S610B ~ S672B, thus tail gas is through catalyst converter, after purification, directly air is discharged to by the catalyst after wherein activating.Meanwhile, tail gas in storage tank T is collected in also according to the signal of catalyst converter side pressure sensor S1, by the waste gas in storage tank T via the 3rd catalyst converter suction tude CIP 3enter catalyst converter, and after purification, be discharged to air by the catalyst after wherein activating.
Be exemplarily described the utility model by reference to the accompanying drawings above, obvious specific implementation of the present utility model is not by the restriction of above-mentioned mode of execution.Those of ordinary skill in the art are easy to advantage and the amendment of expecting other.Therefore, in it is more wide in range, shown in the utility model is not limited to here and described detail and representative embodiment.Therefore, can not depart from as appended claims and equivalent thereof make various amendment under the prerequisite of the spirit or scope of this general inventive concept that limits.
Such as, in the above-described embodiment, show engine exhaust gas processing unit 1 and comprise storage tank T, the exhaust port O of the 4th three-way valve V5 51be communicated with the suction port of storage tank T, the exhaust port O of the 4th three-way valve V5 by tail gas recycle pipe GRP 52be communicated with outside atmosphere by tail gas discharging pipe GDP, and on above-mentioned storage tank T, be provided with compressor pump P, pressure transducer (storage tank side pressure sensor) S2, pressure regulator valve V6 and Decompression valves V7, and above-mentioned pressure regulator valve V6 can make storage tank T by the 3rd catalyst converter suction tude CIP 3and be communicated with the suction port of catalyst converter CAT, the structure that above-mentioned Decompression valves V7 can make the tail gas in storage tank T discharge via relief tube RP, but the utility model is not limited to this.
As variation of the present utility model, engine exhaust gas processing unit can not arrange storage tank T, now, two position three-way valve (the 4th three-way valve) V5 also can not be set, and tail gas recycle pipe GRP, tail gas discharging pipe GDP and the 3rd catalyst converter suction tude CIP are not set 3.In addition, the upstream side at catalyst converter or between the downstream side at catalyst converter and electromagnet cut off valve V4, Decompression valves is set, thus when catalyst converter side pressure sensor S1 detects that the gas pressure of catalyst converter CAT upstream end is too high, tail gas is discharged on a small quantity.
As in the processing method corresponding to the engine exhaust gas processing unit of above-mentioned variation, before catalyst activity, make the tail gas of discharge through engine driven supercharging mechanism (case turbocharging mechanism) EDS, and compress in catalyst converter inside, to make exhaust temperature raise, reach the effect shortening catalyzer soak time.In addition, when catalyst converter side pressure sensor S1 detects that catalyst converter internal pressure is too high, open Decompression valves, discharge a small amount of tail gas, after pressure suitably reduces, close Decompression valves.On the other hand, after catalyst activity, close Decompression valves, make tail gas through catalyst converter, after purification, be directly discharged to air by the catalyst after wherein activating.

Claims (5)

1. an engines tail gas processing system (1), comprises motor (E), catalyst converter (CAT) and offgas duct (GP), it is characterized in that, comprising:
First three-way valve (V1), this first three-way valve (V1) has an air inlet port (I 11) and two exhaust port (O 11, O 12);
Second three-way valve (V2), this second three-way valve (V2) has two air inlet port (I 21, I 22) and two exhaust port (O 21, O 22);
3rd three-way valve (V3), this first three-way valve (V3) has an air inlet port (I 31) and two exhaust port (O 31, O 32); And
Electromagnet cut off valve (V4), this electromagnet cut off valve (V4) is arranged on close catalyst converter (CAT) side of offgas duct (GP),
An exhaust port (O of described first three-way valve (V1) 11) by the first connecting tube (CP 1) and with the air inlet port (I of described second three-way valve (V2) 21) be communicated with, another exhaust port (O of described first three-way valve (V1) 12) by the first engine driven supercharging suction tude (DP 1), and via engine driven supercharging mechanism (EDS) with the air inlet port (I of described second three-way valve (V2) 22) be communicated with,
An exhaust port (O of described second three-way valve (V2) 21) by the first catalyst converter suction tude (CIP 1) and be communicated with the suction port of described catalyst converter (CAT), another exhaust port (O of described second three-way valve (V2) 22) be communicated with the suction port of described motor (E) by suction tude (IP),
The relief opening of described motor (E) by outlet pipe (OP) with the air inlet port (I of described 3rd three-way valve (V3) 31) be communicated with,
An exhaust port (O of described 3rd three-way valve (V3) 31) by the second catalyst converter suction tude (CIP 2) and be communicated with the suction port of catalyst converter (CAT), another exhaust port (O of the 3rd three-way valve (V3) 32) by the second engine driven supercharging suction tude (DP 2), and via engine driven supercharging (EDS) with the air inlet port (I of the second three-way valve (V2) 22) be communicated with.
2. engines tail gas processing system (1) as claimed in claim 1, is characterized in that,
Be positioned at the described first catalyst converter suction tude (CIP of described catalyst converter (CAT) upstream 1), described second catalyst converter suction tude (CIP 2) concourse near be provided with catalyst converter side pressure sensor (S1), the pressure of this catalyst converter side pressure sensor (S1) to described catalyst converter (CAT) upstream side measures.
3. engines tail gas processing system (1) as claimed in claim 2, is characterized in that, also comprise:
4th three-way valve (V5), described in the ratio that 4th three-way valve (V5) is arranged on described offgas duct (GP), electromagnet cut off valve (V4) is further from the downstream side of described catalyst converter (CAT), and has an air inlet port (I 51) and two exhaust port (O 51, O 52); And
Storage tank (T), this storage tank (T) is arranged on an exhaust port (O of described 4th three-way valve (V5) 51) downstream side,
Air inlet port (the I of described 4th three-way valve (V5) 51) be communicated with described catalyst converter (CAT) via described offgas duct (GP),
An exhaust port (O of described 4th three-way valve (V5) 51) be communicated with described storage tank via tail gas recycle pipe (GRP), another exhaust port (O of described 4th three-way valve (V5) 52) be communicated with outside atmosphere via tail gas discharging pipe (GDP).
4. engines tail gas processing system (1) as claimed in claim 3, is characterized in that,
Described storage tank (T) is provided with compressor pump (P), storage tank side pressure sensor (S2), pressure regulator valve (V6) and Decompression valves (V7),
Described compressor pump (P) compresses the tail gas be stored in described storage tank (T),
The pressure of described pressure transducer (S2) to the tail gas being stored in described storage tank (T) measures,
Described pressure regulator valve (V6) makes described storage tank (T) by the 3rd catalyst converter suction tude (CIP 3) and be communicated with the suction port of described catalyst converter (CAT),
Described Decompression valves (V7) makes the tail gas in storage tank (T) discharge via relief tube (RP).
5. engines tail gas processing system (1) as claimed in claim 4, is characterized in that,
Tail gas is via described first catalyst converter suction tude (CIP 1), described first catalyst converter suction tude (CIP 2) and described first catalyst converter suction tude (CIP 3) enter described catalyst converter (CAT).
CN201420568099.0U 2014-09-29 2014-09-29 Engines tail gas processing system Withdrawn - After Issue CN204099010U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405480A (en) * 2014-09-29 2015-03-11 日立汽车系统(苏州）有限公司 Engine tail gas treatment system and engine tail gas treatment method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405480A (en) * 2014-09-29 2015-03-11 日立汽车系统(苏州）有限公司 Engine tail gas treatment system and engine tail gas treatment method
CN104405480B (en) * 2014-09-29 2017-11-24 日立汽车系统(苏州）有限公司 Engines tail gas processing system and motor exhaust processing method

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