WO2017193689A1 - 汽车尾气中的一氧化碳净化方法 - Google Patents

汽车尾气中的一氧化碳净化方法 Download PDF

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Publication number
WO2017193689A1
WO2017193689A1 PCT/CN2017/075937 CN2017075937W WO2017193689A1 WO 2017193689 A1 WO2017193689 A1 WO 2017193689A1 CN 2017075937 W CN2017075937 W CN 2017075937W WO 2017193689 A1 WO2017193689 A1 WO 2017193689A1
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automobile
exhaust gas
carbon monoxide
purifier
exhaust
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PCT/CN2017/075937
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English (en)
French (fr)
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黄方元
黄安武
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黄方元
黄安武
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Publication of WO2017193689A1 publication Critical patent/WO2017193689A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0857—Carbon oxides
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/022—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting CO or CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to the technical field of automobile exhaust gas control, and particularly relates to a method for purifying carbon monoxide in automobile exhaust gas.
  • the car exhaust gas purifier installed inside the car can usually absorb the harmful gas once, but when the road surface is uneven, for example, the car engine needs to output a large power. At this time, exhaust gas with a relatively high amount of harmful gas is discharged, and the exhaust gas purifier of the automobile is difficult to absorb the harmful gas in the exhaust gas, thereby causing environmental pollution.
  • some harmful gases in the exhaust of the car can also cause harm to the human body.
  • carbon monoxide in the automobile exhaust combines with hemoglobin in the blood 250 times faster than oxygen. Carbon monoxide enters the blood circulation through the respiratory tract and forms a carboxyhemoglobin after affinity with hemoglobin, thereby weakening the function of blood to transport oxygen to tissues.
  • the central nervous system causes dysfunction such as human feelings, reactions, understanding, memory, etc., and the severe ones endanger the blood circulation system, leading to life-threatening. Therefore, even a slight inhalation of carbon monoxide may cause terrible anoxic damage.
  • the object of the present invention is to provide a vehicle exhaust
  • the carbon monoxide purification method can effectively control the content of carbon monoxide in the exhaust gas of the automobile, and reduce the pollution of the automobile exhaust gas to the environment and the harm to the human body.
  • the present invention adopts the following technical solutions:
  • a method for purifying carbon monoxide in automobile exhaust gas comprises the following steps:
  • the second purifier valve of the automobile is opened, and the exhaust of the automobile is discharged to the second purifier of the automobile for carbon monoxide treatment, wherein the second purifier of the automobile is filled with a carbon monoxide adsorbent.
  • the carbon monoxide purification method in the automobile exhaust gas of the present invention determines whether it is necessary to perform secondary treatment on the automobile exhaust gas through the exhaust pressure value at the outlet of the exhaust pipe of the automobile engine and the carbon monoxide emission amount, and if so, The vehicle exhaust is discharged to the second purifier of the car for carbon monoxide treatment. Therefore, the vehicle will not emit carbon monoxide that exceeds the standard when the vehicle is driven on various road surfaces or the engine work is different, effectively preventing the automobile exhaust gas from polluting the environment and harming the human body.
  • FIG. 1 is a schematic flow chart of a method for purifying carbon monoxide in automobile exhaust gas according to an embodiment of the present invention.
  • a method for purifying carbon monoxide in automobile exhaust gas comprises the following steps:
  • step S101 the exhaust pressure value at the outlet of the exhaust pipe of the automobile engine is obtained. Since the car produces different power on different roads or when the speed of the car is different, the exhaust pressure at the outlet of the exhaust pipe of the automobile engine is also different. When the exhaust pressure value is different, the content of harmful gases contained in the exhaust gas at the outlet of the exhaust pipe of the engine is also different.
  • Step S102 when the exhaust pressure value reaches a predetermined value, detecting exhaust gas at the outlet of the automobile exhaust gas purifier.
  • the exhaust gas of the automobile exhaust gas purifier outlet is detected, which can effectively reduce the number of times and time of using the equipment used in the process, and prolong the service life of the equipment. .
  • the type and content of the harmful gas contained in the exhaust gas can be separately detected by a plurality of gas detectors.
  • M% the content of all harmful gases in the exhaust gas discharged from the outlet of the automobile exhaust gas purifier per unit time
  • the harmful gas in the automobile exhaust gas is usually discharged after the automobile exhaust gas purifier is absorbed.
  • the pressure value is greater than the predetermined value, there is a possibility that the automobile exhaust exceeds the standard.
  • the predetermined value can be based on different engines Determine after testing. For example, by detecting the content of harmful gas in the exhaust gas at the exhaust pipe of the automobile engine exhaust pipe, when the content reaches the maximum value that can be absorbed by the automobile exhaust gas purifier, the exhaust gas at the outlet of the exhaust pipe of the automobile engine at this time can be exhausted.
  • the magnitude of the pressure value is set to the predetermined value.
  • Step S103 determining whether the carbon monoxide emission in the automobile exhaust exceeds a threshold according to the detected result. If yes, step S104 is performed. Otherwise, the process returns to step S101 or step S102.
  • the threshold can be set to 135 mg/km.
  • Step S104 if the determination result in the step S103 is YES, the second purifier valve of the automobile is opened, and the automobile exhaust gas is discharged to the second purifier of the automobile for carbon monoxide treatment, wherein the second purifier of the automobile is inside A carbon monoxide adsorbent is packed for absorbing carbon monoxide in the exhaust of the automobile.
  • the automobile second purifier is a device specially used for secondary absorption treatment of various harmful gases in the automobile exhaust gas, and can be connected at the exit of the automobile exhaust gas purifier.
  • the carbon monoxide absorbent may be a composition composed of a porous inorganic carrier and a binary complex of a nitride and a copper chloride carried thereon, and the nitride in the composition accounts for 0.43- 0.78 molar ratio;
  • the inorganic carrier comprises: honeycomb ceramic, activated carbon or titanium oxide; the nitride is pyridine and Compositions.
  • the process of detecting exhaust gas at the outlet of the automobile exhaust gas purifier may include the following steps:
  • automobile exhaust gas usually contains various harmful gases such as carbon monoxide, hydrocarbons, sulfur oxides, and nitrogen oxides.
  • harmful gases such as carbon monoxide, hydrocarbons, sulfur oxides, and nitrogen oxides.
  • Each of these gases has a specific characteristic absorption band and characteristic frequency that is strongly absorbed when the infrared spectrum falls near the characteristic frequency band. Therefore, the infrared spectroscopy of the corresponding characteristic frequency can be used to detect the components of the harmful gas in the exhaust gas, and the amount of the absorbed external spectrum can detect the content of the corresponding gas (ie, the discharge amount).
  • the following steps may be further included:
  • the opening time of the second purifier valve of the automobile is controlled according to the delay instruction, and the exhaust pressure value at the outlet of the exhaust pipe of the automobile engine is stopped during the opening time.
  • the vehicle when the actual number of times the exhaust pressure value is greater than or equal to the predetermined value reaches a set threshold within a predetermined time, the vehicle is automatically determined to travel on a rough mountain road, otherwise the car is automatically determined. Drive on a flat road.
  • the predetermined time is generally set to a time of a few seconds, for example 3-5 seconds. If by judging that the car is driving On the rugged mountain road, you can extend the opening time of the second purifier valve of the car, for example, to 5 minutes or 10 minutes.
  • the opening time can be set in advance, and the specific setting process can adopt the prior art, and details are not described herein.
  • the predetermined time, the predetermined value, the set threshold, and the like may be set by using similar means according to actual needs.
  • the process of controlling the opening time of the second purifier valve of the automobile according to the delay instruction may specifically include the following steps:
  • Extracting a time value in the delay instruction is proportional to the exhaust pressure value and the actual number of times;
  • a timer After opening the second purifier valve of the automobile, a timer is turned on, and the second purifier valve of the automobile is turned off when the timer reaches the time value.
  • the method may further include the following steps: generating an alarm instruction, and displaying an alarm identifier at a predetermined position of the dashboard of the automobile according to the alarm instruction.
  • the carbon monoxide emission in the exhaust gas can be displayed more intuitively and timely, so that people can overhaul the engine through the alarm and the displayed content, and timely control the carbon monoxide pollution in the exhaust gas to pollute the environment.
  • the process of discharging the automobile exhaust gas to the second purifier of the automobile may specifically include the following steps:
  • the reference speed is calculated based on the rotational speed, the current temperature, the exhaust pressure value, and the carbon monoxide emission amount, and the speed at which the vehicle exhaust is discharged to the second purifier of the automobile is adjusted according to the reference speed.
  • V is the reference speed
  • r is the rotational speed of the automobile engine
  • C is the carbon monoxide emission
  • T is the current temperature in the second purifier of the automobile
  • P is the exhaust pressure value
  • a is a constant conversion coefficient, which is between 0.28 Between -0.5.
  • the carbon monoxide purification method in the automobile exhaust gas determines whether the exhaust gas of the automobile is required to be reprocessed by the exhaust pressure value at the outlet of the exhaust pipe of the automobile engine and the carbon monoxide emission amount. If it is, the car exhaust is discharged to the second purifier of the car for carbon monoxide treatment. Therefore, the vehicle will not emit carbon monoxide that exceeds the standard when the vehicle is driven on various road surfaces or the engine work is different, effectively preventing the automobile exhaust gas from polluting the environment and harming the human body.

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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)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)

Abstract

一种汽车尾气中的一氧化碳净化方法，包括：获取汽车发动机排气管出口处的排气压力值（S101）；当排气压力值达到预定值时，对汽车尾气净化器出口的尾气进行检测（S102）；根据检测的结果判断汽车尾气中的一氧化碳排放量是否超过阈值（S103）；若是，则将汽车第二净化器阀门打开，将汽车尾气排放到汽车第二净化器进行一氧化碳处理，其中，汽车第二净化器内填充有一氧化碳吸附剂（S104）。通过排气压力值及一氧化碳排放量来判断是否对汽车尾气进行二次处理，避免尾气污染环境。

Description

汽车尾气中的一氧化碳净化方法 技术领域
本发明涉及汽车尾气控制技术领域，具体涉及一种汽车尾气中的一氧化碳净化方法。
背景技术
通常汽车在比较平缓的公路上行驶时，汽车内部安装的汽车尾气净化器通常能较好的将有害气体一次吸收完毕，但是在例如山路等路面不平整时，汽车发动机则需要输出较大的功率，此时就会排出有害气体含量比较多的尾气，该汽车尾气净化器则难以将尾气中的有害气体一下吸收完毕，从而会造成对环境的污染。
并且，汽车尾气中的某些有害气体还会对人体造成伤害。例如，汽车尾气中的一氧化碳与血液中的血红蛋白结合的速度比氧气快250倍，一氧化碳经呼吸道进入血液循环，与血红蛋白亲合后生成碳氧血红蛋白，从而削弱血液向各组织输送氧的功能，危害中枢神经系统，造成人的感觉、反应、理解、记忆力等机能障碍，重者危害血液循环系统，导致生命危险。所以，即使微量吸入一氧化碳，也可能给人造成可怕的缺氧性伤害。
因此，如何对汽车尾气进行进一步处理以降低尾气对环境的污染和对人身的伤害，成为一个亟待解决的问题。
发明内容
针对现有技术的不足，本发明的目的在于提供一种汽车尾气中的 一氧化碳净化方法，能够有效地控制汽车尾气中一氧化碳的含量，降低汽车尾气对环境的污染和对人体的伤害。
为实现上述目的，本发明采用如下技术方案：
一种汽车尾气中的一氧化碳净化方法，包括如下步骤：
获取汽车发动机排气管出口处的排气压力值；
当所述排气压力值达到预定值时，对汽车尾气净化器出口的尾气进行检测；
根据检测的结果判断汽车尾气中的一氧化碳排放量是否超过阈值；
若是，则将汽车第二净化器阀门打开，将所述汽车尾气排放到所述汽车第二净化器进行一氧化碳处理，其中，所述汽车第二净化器内填充有一氧化碳吸附剂。
与现有技术相比，本发明的汽车尾气中的一氧化碳净化方法，通过汽车发动机排气管出口处的排气压力值及一氧化碳排放量来判断是否需要对汽车尾气进行二次处理，若是则将汽车尾气排放到汽车第二净化器进行一氧化碳处理。从而使得汽车行驶在各种环境的路面上或者发动机做功不同的情况下均不会有排放超标的一氧化碳，有效的防止汽车尾气对环境的污染和对人体的伤害。
附图说明
图1为本发明的实施例中一种汽车尾气中的一氧化碳净化方法的流程示意图。
具体实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述：
参照图1，本发明所提供的一种汽车尾气中的一氧化碳净化方法，包括如下步骤：
步骤S101，获取汽车发动机排气管出口处的排气压力值。由于汽车在不同道路上行驶或者汽车时速不同时汽车发动机所产生功率不同，从而使得汽车发动机排气管出口处的排气压力值也不同。该排气压力值不同时通常发动机排气管出口处的尾气中所包含有害气体的含量也不相同。
步骤S102，当所述排气压力值达到预定值时，对汽车尾气净化器出口的尾气进行检测。
本发明实施例中，只有当排气压力值达到预定值才对汽车尾气净化器出口的尾气进行检测，可以有效的降低完成该过程所述使用设备的使用次数和时间，延长该设备的使用寿命。
在其中一个实施例中，可通过多个气体检测器来分别检测出尾气中包含有害气体的种类及含量。当单位时间内汽车尾气净化器出口排出的尾气中所有害气体的含量占总尾气量大于或等于M％时则说明害气体超标。该M为正数，其可根据实际需要进行设定。
由于排气压力值小于预定值时，汽车尾气中的有害气体通常会在汽车尾气净化器吸收完毕之后排放出去。但是当该压力值大于预定值时则有可能会出现汽车尾气超标的情况。该预定值可根据不同发动机 进行测试之后确定。例如通过对汽车发动机排气管出口处的尾气含有有害气体的含量进行检测，当该含量达到汽车尾气净化器所能吸收的最大值时，可将此时汽车发动机排气管出口处的排气压力值的大小设为该预定值。
步骤S103，根据检测的结果判断汽车尾气中的一氧化碳排放量是否超过阈值。若是则执行步骤S104。否则返回执行步骤S101或者步骤S102。
在其中一个实施例中，所述阈值可以设置为135毫克/公里。
步骤S104，若步骤S103的判断结果为是，则将汽车第二净化器阀门打开，将所述汽车尾气排放到所述汽车第二净化器进行一氧化碳处理，其中，所述汽车第二净化器内填充有一氧化碳吸附剂，以用于吸收汽车尾气中的一氧化碳。
本发明实施例中，汽车第二净化器是专门用来对汽车尾气中的各种有害气体进行二次吸收处理的一个装置，其可以连接在汽车尾气净化器出口之处。在本实施例中，所述一氧化碳吸收剂可以为由多孔无机载体和其上所载有的氮化物和氯化铜的二元配合物构成的组合物，且该组合物中氮化物占0.43-0.78摩尔比；所述无机载体包括：蜂窝陶瓷、活性炭或者氧化钛；所述氮化物为吡啶及
Figure PCTCN2017075937-appb-000001
的组合物。
在另外一个实施例中，所述对汽车尾气净化器出口的尾气进行检测的过程可以包括如下步骤：
通过红外线检测的方式对尾气进行实时检测；
根据被吸收的红外线的波长范围及被吸收的程度，生成相应的电信号；
根据该电信号分析得出一氧化碳排放量。
由于汽车尾气中通常包含有一氧化碳、碳氢化合物、硫氧化合物、氮氧化合物等各种有害气体。而这些气体中每种气体具有特定的特征吸收谱带与特征频率，当红外光谱落在特征频率带附近的时候会被强烈的吸收。所以可通过相应特征频率的红外光谱来检测尾气中有害气体的成分，及被吸收的外光谱的量可以检测出相应气体的含量(即排放量)。
作为优选的实施例，在所述获取对汽车发动机排气管出口处的排气压力值步骤之后，还可以包括以下步骤：
获取所述排气压力值在预定时间内大于或等于预定值的实际次数；
判断所述实际次数是否大于或等于设定阈值；
若是，则发送延长打开所述汽车第二净化器阀门的延时指令；
根据所述延时指令控制所述汽车第二净化器阀门的打开时间，并在该打开时间内停止获取汽车发动机排气管出口处的排气压力值。
本发明实施例中，当在预定时间内所述排气压力值大于或等于所述预定值的实际次数达到一个设定阈值时，则自动判定汽车行驶在坎坷崎岖的山路上，否则自动判定汽车行驶在平坦的公路上。该预定时间一般设为几秒钟的时间，例如3-5秒钟。若通过判定汽车是行驶在 坎坷崎岖的山路上，则可以延长汽车第二净化器阀门的打开时间，例如延长至5分钟或者10分钟等。该打开的时间可以预先进行设定，具体设定的过程可采用现有技术，此处不予赘述。同理所述预定时间、预定值、设定阈值等均可根据实际需要采用相类似的手段进行设定。
作为一个较好的实施例，根据所述延时指令控制所述汽车第二净化器阀门的打开时间的过程具体可以包括如下步骤：
提取所述延时指令中的时间值；所述时间值与所述排气压力值以及所述实际次数成正比关系；
在打开所述汽车第二净化器阀门后，开启一个定时器，在该定时器到达所述时间值时关闭所述汽车第二净化器阀门。
作为优选的实施例，在判断得出汽车尾气中的一氧化碳排放量超过阈值之后，还可以包括如下步骤：生成报警指令，根据该报警指令在汽车仪表盘的预定位置显示报警标识。通过报警及显示，可以使得尾气中一氧化碳排放量更直观及时地展示，便于人们通过该报警及显示的内容对发动机进行检修，及时控制尾气中的一氧化碳污染环境。
作为一个较好的实施例，将所述汽车尾气排放到所述汽车第二净化器的过程具体可以包括如下步骤：
实时获取汽车发动机的转速以及所述汽车第二净化器中的当前温度；
根据转速、当前温度、排气压力值以及一氧化碳排放量计算出参考速度，并根据所述参考速度来调节汽车尾气排放到所述汽车第二净化器的速度。
本实施例中，可以采用如下公式来计算参考速度：
Figure PCTCN2017075937-appb-000002
上式中，V为参考速度；r为汽车发动机的转速，C为一氧化碳排放量，T为汽车第二净化器中的当前温度，P为排气压力值，a为常数转换系数，介于0.28-0.5之间。通过控制尾气排放到汽车第二净化器中的的速度，使得一氧化碳能够在汽车第二净化器中被更完全的吸收，从而可以有效提高尾气处理的效率。特别的，经过大量的实验数据证明，当a的值取为0.38时，一氧化碳吸收的效率最佳。
通过以上方案可以看出，本发明实施例的一种汽车尾气中的一氧化碳净化方法，通过汽车发动机排气管出口处的排气压力值及一氧化碳排放量来判断是否需要对汽车尾气进行二次处理，若是则将汽车尾气排放到汽车第二净化器进行一氧化碳处理。从而使得汽车行驶在各种环境的路面上或者发动机做功不同的情况下均不会有排放超标的一氧化碳，有效的防止汽车尾气对环境的污染和对人体的伤害。
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本发明权利要求的保护范围之内。

Claims (5)

  1. 一种汽车尾气中的一氧化碳净化方法，其特征在于，包括如下步骤：
    获取汽车发动机排气管出口处的排气压力值；
    当所述排气压力值达到预定值时，对汽车尾气净化器出口的尾气进行检测；
    根据检测的结果判断汽车尾气中的一氧化碳排放量是否超过阈值；
    若是，则将汽车第二净化器阀门打开，将所述汽车尾气排放到所述汽车第二净化器进行一氧化碳处理，其中，所述汽车第二净化器内填充有一氧化碳吸附剂；所述一氧化碳吸收剂为由多孔无机载体和其上所载有的氮化物和氯化铜的二元配合物构成的组合物，且该组合物中氮化物占0.43-0.78摩尔比；所述无机载体包括：蜂窝陶瓷、活性炭或者氧化钛；所述氮化物为吡啶及
    Figure PCTCN2017075937-appb-100001
    的组合物；
    根据所述延时指令控制所述汽车第二净化器阀门的打开时间的过程包括：提取所述延时指令中的时间值；其中，所述时间值与所述排气压力值以及所述实际次数成正比关系；在打开所述汽车第二净化器阀门后，开启一个定时器，在该定时器到达所述时间值时关闭所述汽车第二净化器阀门；
    将所述汽车尾气排放到所述汽车第二净化器的过程包括：实时获取汽车发动机的转速以及所述汽车第二净化器中的当前温度；根据转 速、当前温度、排气压力值以及一氧化碳排放量计算出参考速度，并根据所述参考速度来调节汽车尾气排放到所述汽车第二净化器中的速度。
  2. 根据权利要求1所述的汽车尾气中的一氧化碳净化方法，其特征在于，所述阈值为135毫克/公里。
  3. 根据权利要求1所述的汽车尾气中的一氧化碳净化方法，其特征在于，所述对汽车尾气净化器出口的尾气进行检测的过程包括：
    通过红外线检测的方式对汽车尾气净化器出口的尾气进行检测；
    根据被吸收的红外线的波长范围及被吸收的程度，生成相应的电信号；
    根据该电信号分析得出一氧化碳排放量。
  4. 根据权利要求1所述的汽车尾气中的一氧化碳净化方法，其特征在于，在所述获取对汽车发动机排气管出口处的排气压力值步骤之后，还包括以下步骤：
    获取所述排气压力值在预定时间内大于或等于预定值的实际次数；
    判断所述实际次数是否大于或等于设定阈值；
    若是，则发送延长打开所述汽车第二净化器阀门的延时指令；
    根据所述延时指令控制所述汽车第二净化器阀门的打开时间，并在该打开时间内停止获取汽车发动机排气管出口处的排气压力值。
  5. 根据权利要求1所述的汽车尾气中的一氧化碳净化方法，其特征在于，在判断得出汽车尾气中的一氧化碳排放量超过阈值之后， 还包括如下步骤：
    生成报警指令，根据该报警指令在汽车仪表盘的预定位置显示报警标识。
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