Automobile tail gas treatment equipment

Abstract

The invention relates to the technical field of waste gas treatment, and discloses automobile tail gas treatment equipment which comprises an exhaust pipe body, an exhaust port is fixedly connected toone side of the exhaust pipe body, a gas inlet pipe is fixedly connected to the other side of the exhaust pipe body, and an exhaust channel is formed in the exhaust pipe body. Through the arrangementof an electric heating wire and an armature switch, when high-temperature waste gas generated by an engine starts to enter the exhaust pipe body, the temperature does not reach the temperature required by a three-way catalyst at the moment, a large amount of high-temperature waste gas is accumulated at the front end of the three-way catalyst, the air pressure is increased, the temperature is rapidly increased, meanwhile, a storage battery supplies power to the electric heating wire to heat inflow tail gas, and the needed temperature can be rapidly reached. When the temperature reaches the working temperature of the three-way catalyst, an electromagnet is powered on to enable the armature switch to contract upwards for exhausting, and at the moment, all gas passing through the three-way catalyst is exhaustible gas subjected to catalytic conversion so that the ignition time can be effectively shortened, and the purification performance of cold start is improved.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to an automobile tail gas treatment equipment. Background technique [0002] With the progress of the times, automobiles have become an indispensable part of people's lives. However, although the development of the automobile industry has brought great benefits to mankind, it also pollutes the environment in which we live. Automobile exhaust is one of the main sources of air pollution. Automobile exhaust contains a large number of harmful substances, including carbon monoxide, nitrogen oxides, hydrocarbons and solid suspended particles. While the exhaust gas directly endangers human health, it will also have a profound impact on the environment in which humans live. Moreover, the sulfur dioxide in the exhaust gas It has a strong irritating odor, and when it reaches a certain concentration, it will easily lead to the occurrence of "acid rain", causing acidification of soi...

AI Technical Summary

Problems solved by technology

[0002] With the progress of the times, automobiles have become an indispensable part of people's lives. However, although the development of the automobile industry has brought great benefits to mankind, it also pollutes the environment in which we live. Automobile exhaust is one of the main sources of air pollution. Automobile exhaust contains a large number of harmful substances, including carbon monoxide, nitrogen oxides, hydrocarbons and solid suspended particles. While the exhaust gas directly endangers human health, it will also have a profound impact on the environment in which humans live. Moreover, the sulfur dioxide in the exhaust gas It has a strong irritating smell, and when it reaches a certain concentration, it will easily lead to the occurrence of "acid rain", causing acidification of soil and water sources, and affecting the growth of crops and forests

[0003] The tail gas produced by cars during driving contains harmful gases, thus causing great pollution to the atmosphere. Especially in large and medium-sized cities, the number of cars has a linear upward trend, and the emission of car tail gas has a great impact on the health of urban residents. It is the main source of air pollution in modern cities. In order to solve the above problems, various automobile exhaust treatment devices have come into operation. Among them, the three-way catalytic converter is the most widely used after-treatment device for gasoline engines. However, its conversion efficiency and temperature Closely related, it starts to work only when it reaches a certain temperature. The temperature at which the three-way catalytic converter starts to work is about 200 degrees Celsius, and the best working temperature is between 400 degrees Celsius and 800 degrees Celsius. When the conversion efficiency reaches 50%, the time required is called light-off During cold start, the exhaust gas temperature is low and the light-off time is long, especially in areas with low temperature and winter, resulting in a large amount of exhaust gas before the temperature in the exhaust pipe reaches the reaction temperature It is directly discharged from the exhaust pipe, causing harm to people and the natural environment, so it is particularly important to shorten the light-off time to improve the purification performance of cold start

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