WO2021244446A1 - 汽油颗粒捕集器再生装置及车辆 - Google Patents

汽油颗粒捕集器再生装置及车辆 Download PDF

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Publication number
WO2021244446A1
WO2021244446A1 PCT/CN2021/096949 CN2021096949W WO2021244446A1 WO 2021244446 A1 WO2021244446 A1 WO 2021244446A1 CN 2021096949 W CN2021096949 W CN 2021096949W WO 2021244446 A1 WO2021244446 A1 WO 2021244446A1
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WIPO (PCT)
Prior art keywords
gasoline
gasoline particle
air
pipe
particle trap
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PCT/CN2021/096949
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English (en)
French (fr)
Inventor
康文霞
贾春
张国庆
寇珂瑛
谢晓峰
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中国第一汽车股份有限公司
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Publication of WO2021244446A1 publication Critical patent/WO2021244446A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • This application relates to the technical field of gasoline particle traps, for example, to a gasoline particle trap regeneration device and a vehicle.
  • gasoline particulate traps have become more and more widely used.
  • the capture efficiency of gasoline particulate traps is generally above 90%, and particulate traps can capture automobile exhaust. More than 90% of the number of particles, the captured particles are attached to the trap. Because the particles captured by the particle trap require a high temperature to be oxidized, the particles are in the exhaust gas without the excitation of external conditions. It is difficult to be eliminated in the system. With the accumulation of particulate matter, the exhaust resistance of the engine will gradually increase. When the particulate trap is severely blocked, the back pressure of the engine exhaust system will rise sharply and the engine performance will also deteriorate.
  • the exhaust temperature is lower than that of the tightly coupled gasoline particulate traps, and the problem that neither of the above two methods can be regenerated at low temperatures is prone to occur.
  • the present application provides a gasoline particle trap regeneration device and a vehicle, which can realize the regeneration of the gasoline particle trap even at low temperatures.
  • a gasoline particle trap regeneration device including:
  • a gasoline particle trap is arranged on the exhaust pipe of the engine, the gasoline particle trap is coated with a catalyst, and the catalyst-coated gasoline particle trap is set to purify pollutants discharged from the engine;
  • a pressure difference detecting element which is arranged on the gasoline particle trap, and is configured to detect the air pressure difference between the air inlet and the air outlet of the gasoline particle trap;
  • a connecting pipe one end of which is connected to the inlet end of the gasoline particle trap
  • the air valve is arranged on the connecting pipe;
  • the active desorption pump has an outlet set at the other end of the connecting pipe and is set to deliver air to the gasoline particle trap.
  • the pressure difference detecting element is a pressure difference sensor.
  • a vehicle including the gasoline particle trap regeneration device as described above.
  • it further includes an air cleaner and a first intake pipe, and the inlet end of the engine is connected to the air cleaner through the first intake pipe.
  • it further includes a first vent pipe and a canister valve, the inlet end of the engine is connected to the outlet end of the active desorption pump through the first vent pipe, and the canister valve is disposed on the first vent pipe.
  • One snorkel is a first vent pipe and a canister valve, the inlet end of the engine is connected to the outlet end of the active desorption pump through the first vent pipe, and the canister valve is disposed on the first vent pipe.
  • it further includes a carbon canister, and the inlet of the active desorption pump is connected to the carbon canister.
  • it further includes a second vent pipe and a three-way valve, one end of the second vent pipe is connected to the first connection port of the three-way valve, and the other end is connected to the inlet of the active desorption pump, so The second connection port of the three-way valve is connected to the carbon canister.
  • it further includes an oil tank, the second connection port of the three-way valve is connected to the carbon canister through a third vent pipe, and the carbon canister is connected to the oil tank through a fourth vent pipe.
  • it further includes a second air inlet pipe and a vent valve, and the third connection port of the three-way valve is connected to the vent valve through the second air inlet pipe.
  • vent valve is connected to the carbon canister through a fifth vent pipe.
  • Fig. 1 is a schematic structural diagram of a gasoline particle trap regeneration device provided by the present application.
  • Air filter 1. Air filter; 2. Engine; 3. Three-way catalytic converter; 4. Gasoline particle trap; 5. Pressure difference detection parts; 6. Air valve; 61. Connecting pipe; 7. Fuel tank; 8. Carbon Tank; 9, vent valve; 10, three-way valve; 101, second air inlet pipe; 11, active desorption pump; 111, second vent pipe; 12, carbon canister valve.
  • the terms “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. indicate the orientation or positional relationship based on the attached
  • the position or position relationship shown in the figure, or the position or position relationship usually placed when the application product is used, is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific Therefore, it cannot be construed as a limitation of this application.
  • the terms “first”, “second”, “third”, etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
  • “plurality” means two or more.
  • the "above” or “below” of the first feature of the second feature may include the first feature and the second feature in direct contact, or may include the first feature and the second feature Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • This embodiment discloses a gasoline particle trap regeneration device, including: a gasoline particle trap 4, which is arranged on the exhaust pipe of an engine, and the gasoline particle trap 4 is coated with a catalyst and is configured to purify the engine 2 discharged pollutants; pressure difference detection member 5, which is arranged on the gasoline particle trap 4, and is configured to detect the air pressure difference between the air inlet and the air outlet of the gasoline particle trap 4; connecting pipe 61.
  • One end is connected to the inlet end of the gasoline particle trap 4; the air valve 6 is set on the connecting pipe 61; the active desorption pump 11 is set on the other end of the connecting pipe 61 and set to Air is delivered to the gasoline particle trap 4.
  • the air valve and active desorption pump are opened to deliver oxygen-containing air to the gasoline particulate trap, and The exhaust gas in the gasoline particulate trap is mixed, and the mixed gas enters the gasoline particulate trap.
  • the unburned pollutants and the oxygen in the air undergo a redox reaction under the action of the catalyst.
  • the heat released by the redox reaction makes The temperature in the gasoline particle trap increases rapidly, reaching or even exceeding the combustible temperature of the carbon particles, so that the carbon particles are burned, and the carbon particles in the gasoline particle trap are cleaned, thereby realizing the regeneration of the gasoline particle trap.
  • the regeneration device since the vehicle itself has an active desorption pump, in fact, the regeneration device only needs a connecting pipe, an air valve and a pressure difference detection component, which makes the structure of the regeneration device simpler and easy to install. Furthermore, since the combustion of pollutants in the exhaust gas raises the temperature in the gasoline particulate trap, the temperature in the gasoline particulate trap can also be raised to the combustible temperature of carbon particles under low temperature conditions. The regeneration of the gasoline particle trap can also be achieved at low temperatures.
  • this embodiment discloses a vehicle, which includes a gasoline particle trap regeneration device, an engine 2 and an engine exhaust system.
  • the engine exhaust system includes a three-way catalytic converter 3, a gasoline particulate trap 4, a three-way catalytic converter 3 and a gasoline particulate trap 4 are all installed on the engine exhaust pipe, and the three-way catalytic converter 3 is located in the gasoline particulate trap. 4 upstream.
  • the exhaust gas of the engine 2 is finally discharged through the three-way catalyst 3, the gasoline particle trap 4 and the engine exhaust pipe.
  • the gasoline particle trap 4 is coated with a catalyst.
  • a catalyst is coated on the inner pore wall; the catalyst is used to purify the unburned pollutants discharged from the engine 2.
  • the gasoline particle trap 4 also includes a pressure difference detecting member 5, a connecting pipe 61, an air valve 6 and an active desorption pump 11.
  • the pressure difference detection element 5 is arranged on the gasoline particle trap 4.
  • the pressure difference detection element 5 in this embodiment is a pressure difference sensor.
  • the two interfaces of the pressure difference detecting member 5 are respectively connected to the air inlet and the air outlet of the gasoline particle trap 4, and are set to detect the air pressure difference between the air inlet and the air outlet of the gasoline particle trap 4 to determine Whether the gasoline particulate trap 4 needs to be regenerated.
  • One end of the connecting pipe 61 is connected to the inlet end of the gasoline particulate trap 4, and can be connected to the engine exhaust pipe between the three-way catalyst 3 and the gasoline particulate trap 4; the other end is connected to the active desorption pump 11
  • the air valve 6 is arranged on the connecting pipe 61.
  • the active desorption pump 11 is configured to deliver air to the gasoline particulate trap 4.
  • the pressure difference detection component 5 detects that the pressure difference between the gas inlet and the gas outlet of the gasoline particulate trap 4 is large, and reaches the load alert level, it will enter the regeneration process; the control unit of the engine 2 is based on the ambient temperature and the engine 2
  • the speed, vehicle speed and air-fuel ratio parameters determine whether the regeneration conditions are met. If the regeneration conditions are met, calculate the required secondary air intake volume, open the air valve 6 and the active desorption pump 11 to deliver to the gasoline particulate trap 4
  • the air containing oxygen is mixed with the exhaust gas in the gasoline particulate trap 4, and the mixed gas enters the gasoline particulate trap 4.
  • the unburned pollutants and the oxygen in the air undergo an oxidation-reduction reaction under the action of the catalyst.
  • the released heat causes the temperature in the gasoline particle trap 4 to rise rapidly, reaching or even exceeding the combustible temperature of the carbon particles, so that the carbon particles are burned, and the carbon particles in the gasoline particle trap 4 are cleaned, thereby achieving gasoline particle capture.
  • Regeneration of the device 4 Since the vehicle itself has an active desorption pump 11, in fact, the device only needs the connecting pipe 61, the air valve 6 and the pressure difference detecting member 5, which makes the structure of the regeneration device simpler and easy to install. Furthermore, since the combustion of pollutants in the exhaust gas raises the temperature in the gasoline particulate trap 4, the temperature in the gasoline particulate trap 4 can also be raised to the combustible temperature of carbon particles under low temperature conditions. , The regeneration of the gasoline particle trap 4 can also be achieved at low temperatures.
  • the vehicle further includes an air cleaner 1 and a first intake pipe, and the inlet end of the engine 2 is connected to the air cleaner 1 through the first intake pipe.
  • the first intake pipe and the air cleaner 1 provide clean air required for the operation of the engine 2.
  • the vehicle further includes a first vent pipe and a canister valve 12, the inlet end of the engine 2 is connected to the outlet end of the active desorption pump 11 through the first vent pipe, and the canister valve 12 is arranged on the first vent pipe.
  • the canister valve 12 can control whether to release the oil and gas mixture collected in the canister to the engine 2.
  • the vehicle also includes a fuel tank 7, a second vent pipe 111, a three-way valve 10, a carbon canister 8, a second intake pipe 101 and a vent valve 9.
  • the inlet of the active desorption pump 11 is connected to the carbon tank 8.
  • the second vent pipe 111 is connected to the first connection port of the three-way valve 10, and the other end is connected to the inlet of the active desorption pump 11.
  • the second connection port of the three-way valve 10 is connected to the carbon canister 8.
  • the active desorption pump 11 can release the air-fuel mixture collected in the carbon canister 8 to the engine 2 or deliver air to the gasoline particle trap 4.
  • the second connection port of the three-way valve 10 is connected to the oil tank 7.
  • the second connection port of the three-way valve 10 is connected to the carbon canister 8 through a third vent pipe, and the carbon canister 8 is connected to the carbon canister 8 through a fourth vent pipe.
  • the third connection port of the three-way valve 10 is connected to the vent valve 9 through the second intake pipe 101.
  • the vent valve 9 is connected to the carbon canister 8 through a fifth vent pipe.
  • the pressure difference detection component 5 detects that the pressure difference between the gas inlet and the gas outlet of the gasoline particulate trap 4 is large, and reaches the load alert level, it will enter the regeneration process; the control unit of the engine 2 is based on the ambient temperature and the engine 2
  • the speed, vehicle speed and air-fuel ratio parameters determine whether the regeneration conditions are met. If the regeneration conditions are met, calculate the required secondary air intake, close the canister valve 12, open the air valve 6, the vent valve 9 and the active desorption pump 11. Deliver oxygen-containing air into the gasoline particulate trap 4, and mix it with the exhaust gas in the gasoline particulate trap 4. The mixed gas enters the gasoline particulate trap 4, and unburned pollutants are combined with the oxygen in the air.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

一种汽油颗粒捕集器再生装置，包括：汽油颗粒捕集器（4），设置于发动机排气管上，汽油颗粒捕集器（4）内涂覆有催化剂，涂覆催化剂的汽油颗粒捕集器（4）设置为净化发动机排出的污染物；压差检测件（5），设置于汽油颗粒捕集器（4）上，设置为检测汽油颗粒捕集器（4）的进气口和出气口之间的气压差；连接管（61），一端连接于汽油颗粒捕集器（4）的进口端；空气阀（6），设置于连接管（61）上；主动脱附泵（11），出口设置于连接管（61）的另一端，设置为向汽油颗粒捕集器（4）输送空气。还公开一种包括汽油颗粒捕集器再生装置的车辆。

Description

汽油颗粒捕集器再生装置及车辆
本申请要求在2020年06月05日提交中国专利局、申请号为202010506928.2的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及汽油颗粒捕集器技术领域，例如涉及一种汽油颗粒捕集器再生装置及车辆。
背景技术
随着机动车排放法规对颗粒物要求的日益加严，汽油颗粒捕集器的应用越来越广泛，汽油颗粒捕集器的捕集效率一般在90％以上，颗粒捕集器可以捕获汽车尾气中90％以上数量的颗粒，被捕获的颗粒物附着在捕集器上，由于颗粒捕集器捕集到的颗粒需要很高的温度才能被氧化掉，在没有外界条件的激发下，颗粒物在排气系统内很难被消除，随着颗粒物的不断积累，发动机的排气阻力会逐渐增加，当颗粒捕集器被堵塞严重时，发动机排气系统背压会急剧上升，发动机性能也会恶化。
因此需要及时将汽油颗粒捕集器中的颗粒物烧掉即再生。常用的汽油颗粒捕集器的再生方式有两种。一种是通过推迟点火角，提高排气温度，使颗粒捕集器再生。但是在低温情况下无法达到再生温度，不能主动再生；如果进一步增大点火推迟角，会出现动力性不足的情况，容易引起用户抱怨。第二种是采用提醒用户高速行驶后收油从而使颗粒捕集器再生。但是需要用户配合完成主动再生，容易引起用户抱怨，而且还存在用户经常忘记的现象。
对于汽油颗粒捕集器布置在底盘下的车型，其排温相对紧耦合式汽油颗粒捕集器更低，在低温情况下易出现上述两种方式都无法再生的问题。
发明内容
本申请提供一种汽油颗粒捕集器再生装置及车辆，在低温下也可实现汽油颗粒捕集器的再生。
提供一种汽油颗粒捕集器再生装置，包括：
汽油颗粒捕集器，设置于发动机排气管上，所述汽油颗粒捕集器内涂覆有催化剂，涂覆催化剂的汽油颗粒捕集器设置为净化发动机排出的污染物；
压差检测件，设置于所述汽油颗粒捕集器上，设置为检测所述汽油颗粒捕 集器的进气口和出气口之间的气压差；
连接管，一端连接于所述汽油颗粒捕集器的进口端；
空气阀，设置于所述连接管上；
主动脱附泵，出口设置于所述连接管的另一端，设置为向所述汽油颗粒捕集器输送空气。
可选地，压差检测件为压差传感器。
还提供一种车辆，包括如上所述的汽油颗粒捕集器再生装置。
可选地，还包括空气滤清器和第一进气管，所述发动机的进口端通过所述第一进气管连接于所述空气滤清器。
可选地，还包括第一通气管和碳罐阀，所述发动机的进口端通过所述第一通气管连接于所述主动脱附泵的出口端，所述碳罐阀设置于所述第一通气管上。
可选地，还包括碳罐，所述主动脱附泵的进口连接于所述碳罐。
可选地，还包括第二通气管和三通阀，所述第二通气管的一端连接于所述三通阀的第一连接口，另一端连接于所述主动脱附泵的进口，所述三通阀的第二连接口连接于所述碳罐。
可选地，还包括油箱，所述三通阀的第二连接口通过第三通气管连接于所述碳罐，所述碳罐通过第四通气管连接于所述油箱。
可选地，还包括第二进气管和通气阀，所述三通阀的第三连接口通过所述第二进气管连接于所述通气阀。
可选地，所述通气阀通过第五通气管连接于所述碳罐。
附图说明
图1是本申请提供的汽油颗粒捕集器再生装置的结构示意图。
图中：
1、空气滤清器；2、发动机；3、三元催化器；4、汽油颗粒捕集器；5、压差检测件；6、空气阀；61、连接管；7、油箱；8、碳罐；9、通气阀；10、三通阀；101、第二进气管；11、主动脱附泵；111、第二通气管；12、碳罐阀。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，所描述的实施例是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以多种不同的配置来布置和设计。此外，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
因此，以下对在附图中提供的本申请的实施例的描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。
相似的标号和字母在下面的附图中表示类似项，因此，一旦其中一项在一个附图中被定义，则在随后的附图中不需要对该项进行定义和解释。
在本申请的描述中，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，除非另有规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接。可以根据具体情况理解上述术语在本申请中的含义。
在本申请中，除非另有规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下面描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
本实施例公开了一种汽油颗粒捕集器再生装置，包括：汽油颗粒捕集器4，设于发动机排气管上，所述汽油颗粒捕集器4内涂覆有催化剂，设置为净化发动机2排出的污染物；压差检测件5，设置于所述汽油颗粒捕集器4上，设置为检测所述汽油颗粒捕集器4的进气口和出气口之间的气压差；连接管61，一端连接于所述汽油颗粒捕集器4的进口端；空气阀6，设置于所述连接管61上；主动脱附泵11，出口设置于所述连接管61的另一端，设置为向所述汽油颗粒捕集器4输送空气。
当压差检测件检测到汽油颗粒捕集器的进气口和出气口的压差达到负载警戒水平时，开启空气阀和主动脱附泵向汽油颗粒捕集器内输送含有氧气的空气，与汽油颗粒捕集器内的废气混合，混合气体进入到汽油颗粒捕集器内，未燃烧的污染物与空气中的氧气在催化剂的作用下，发生氧化还原反应，氧化还原反应释放的热量，使汽油颗粒捕集器内的温度迅速升高，达到甚至超过碳颗粒的可燃温度，使碳颗粒燃烧，清理汽油颗粒捕集器内的碳颗粒，从而实现汽油颗粒捕集器的再生。
由于车辆上本身带有主动脱附泵，实际上该再生装置只需要连接管、空气阀及压差检测件即可，使该再生装置的结构更加简单，而且安装方便。再者，由于是靠尾气内污染物燃烧使汽油颗粒捕集器内的温度升高，在低温条件下也可以使汽油颗粒捕集器内的温度升高至碳颗粒的可燃温度，因此，在低温下也可实现汽油颗粒捕集器的再生。
如图1所示，本实施例公开了一种车辆，包括汽油颗粒捕集器再生装置、发动机2及发动机排气系统。发动机排气系统包括三元催化器3，汽油颗粒捕集器4，三元催化器3和汽油颗粒捕集器4均设置在发动机排气管上，三元催化器3位于汽油颗粒捕集器4的上游。发动机2的尾气最终经过三元催化器3、汽油颗粒捕集器4及发动机排气管排出。
汽油颗粒捕集器4内涂覆有催化剂。在一实施例中，在内侧孔壁上涂覆有催化剂；催化剂用于净化发动机2排出的未燃烧的污染物。
汽油颗粒捕集器4还包括压差检测件5、连接管61、空气阀6及主动脱附泵11。压差检测件5设置于汽油颗粒捕集器4上，作为可选，本实施例中压差检测件5为压差传感器。压差检测件5的两个接口分别连接于汽油颗粒捕集器4的进气口和出气口，设置为检测汽油颗粒捕集器4的进气口和出气口之间的气压差，以确定汽油颗粒捕集器4是否需要再生。
连接管61的一端连接于汽油颗粒捕集器4的进口端，可以连接于三元催化器3和汽油颗粒捕集器4之间的发动机排气管上；另一端连接于主动脱附泵11的出口，空气阀6设置于连接管61上。主动脱附泵11设置为向汽油颗粒捕集 器4输送空气。
当压差检测件5检测到汽油颗粒捕集器4的进气口和出气口的压差较大，且达到负载警戒水平时，即进入再生程序；发动机2的控制单元根据环境温度、发动机2的转速、车速及空燃比参数确定是否满足再生条件，如果满足再生条件，则计算所需的二次空气进气量，开启空气阀6和主动脱附泵11向汽油颗粒捕集器4内输送含有氧气的空气，与汽油颗粒捕集器4内的废气混合，混合气体进入到汽油颗粒捕集器4内，未燃烧的污染物与空气中的氧气在催化剂的作用下，发生氧化还原反应，释放的热量，使汽油颗粒捕集器4内的温度迅速升高，达到甚至超过碳颗粒的可燃温度，使碳颗粒燃烧，清理汽油颗粒捕集器4内的碳颗粒，从而实现汽油颗粒捕集器4的再生。由于车辆上本身带有主动脱附泵11，实际上该装置只需要连接管61、空气阀6及压差检测件5即可，使该再生装置的结构更加简单，而且安装方便。再者，由于是靠尾气内污染物燃烧使汽油颗粒捕集器4内的温度升高，在低温条件下也可以使汽油颗粒捕集器4内的温度升高至碳颗粒的可燃温度，因此，在低温下也可实现汽油颗粒捕集器4的再生。
可选地，车辆还包括空气滤清器1和第一进气管，发动机2的进口端通过第一进气管连接于空气滤清器1。通过第一进气管和空气滤清器1为发动机2运行提供所需的洁净的空气。
可选地，车辆还包括第一通气管和碳罐阀12，发动机2的进口端通过第一通气管连接于主动脱附泵11的出口端，碳罐阀12设置于第一通气管上。碳罐阀12可以控制是否向发动机2释放碳罐内收集的油气混合物。
车辆还包括油箱7、第二通气管111、三通阀10、碳罐8、第二进气管101和通气阀9。主动脱附泵11的进口连接于碳罐8。
第二通气管111的一端连接于三通阀10的第一连接口，另一端连接于主动脱附泵11的进口。三通阀10的第二连接口连接于碳罐8。主动脱附泵11可以向发动机2释放碳罐8内收集的油气混合物或者向汽油颗粒捕集器4输送空气。三通阀10的第二连接口连接于油箱7，在一实施例中，三通阀10的第二连接口通过第三通气管连接于碳罐8，碳罐8通过第四通气管连接于油箱7。三通阀10的第三连接口通过第二进气管101连接于通气阀9。通气阀9通过第五通气管连接于碳罐8，当碳罐8压力过大时可通过通气阀9向大气中释放油气混合物，以平衡碳罐8内气压。
当压差检测件5检测到汽油颗粒捕集器4的进气口和出气口的压差较大，且达到负载警戒水平时，即进入再生程序；发动机2的控制单元根据环境温度、发动机2的转速、车速及空燃比参数确定是否满足再生条件，如果满足再生条 件，则计算所需的二次空气进气量，关闭碳罐阀12，开启空气阀6、通气阀9和主动脱附泵11，向汽油颗粒捕集器4内输送含有氧气的空气，与汽油颗粒捕集器4内的废气混合，混合气体进入到汽油颗粒捕集器4内，未燃烧的污染物与空气中的氧气在催化剂的作用下，发生氧化还原反应，释放的热量，使汽油颗粒捕集器4内的温度迅速升高，达到甚至超过碳颗粒的可燃温度，使碳颗粒燃烧，清理汽油颗粒捕集器4内的碳颗粒，从而实现汽油颗粒捕集器4的再生。
车辆正常使用时，关闭空气阀6和通气阀9，如检测到碳罐8内负载超过警戒水平，则打开碳罐阀12，然后由主动脱附泵11向发动机2抽送碳罐8中的油气混合物，实现对碳罐8的脱附。

Claims (10)

  1. 一种汽油颗粒捕集器再生装置，包括：
    汽油颗粒捕集器(4)，设于发动机排气管上，所述汽油颗粒捕集器(4)内涂覆有催化剂，涂覆所述催化剂的汽油颗粒捕集器(4)设置为净化发动机(2)排出的污染物；
    压差检测件(5)，设置于所述汽油颗粒捕集器(4)上，设置为检测所述汽油颗粒捕集器(4)的进气口和出气口之间的气压差；
    连接管(61)，一端连接于所述汽油颗粒捕集器(4)的进口端；
    空气阀(6)，设置于所述连接管(61)上；
    主动脱附泵(11)，出口设置于所述连接管(61)的另一端，设置为向所述汽油颗粒捕集器(4)输送空气。
  2. 根据权利要求1所述的汽油颗粒捕集器再生装置，其中，所述压差检测件(5)为压差传感器。
  3. 一种车辆，包括如权利要求1或2所述的汽油颗粒捕集器再生装置。
  4. 根据权利要求3所述的车辆，还包括空气滤清器(1)和第一进气管，所述发动机(2)的进口端通过所述第一进气管连接于所述空气滤清器(1)。
  5. 根据权利要求3所述的车辆，还包括第一通气管和碳罐阀(12)，所述发动机(2)的进口端通过所述第一通气管连接于所述主动脱附泵(11)的出口端，所述碳罐阀(12)设置于所述第一通气管上。
  6. 根据权利要求3所述的车辆，还包括碳罐(8)，所述主动脱附泵(11)的进口连接于所述碳罐(8)。
  7. 根据权利要求6所述的车辆，还包括第二通气管(111)和三通阀(10)，所述第二通气管(111)的一端连接于所述三通阀(10)的第一连接口，所述第二通气管(111)的另一端连接于所述主动脱附泵(11)的进口，所述三通阀(10)的第二连接口连接于所述碳罐(8)。
  8. 根据权利要求7所述的车辆，还包括油箱(7)，所述三通阀(10)的第二连接口通过第三通气管连接于所述碳罐(8)，所述碳罐(8)通过第四通气管连接于所述油箱(7)。
  9. 根据权利要求8所述的车辆，还包括第二进气管(101)和通气阀(9)，所述三通阀(10)的第三连接口通过所述第二进气管(101)连接于所述通气阀(9)。
  10. 根据权利要求9所述的车辆，其中，所述通气阀(9)通过第五通气管连 接于所述碳罐(8)。
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