Research On The Control Technique Of Vehicl Emissions

Auto is a main source of energy consumption and polluted emissions.As the static of car owners roars dramaticly,environment pollution has become more more serious day by day.Presently,our standard to control vehicle emissions is equivalent to that in the 20th century 70s,which was implemented in the the developed countries.The most vechile pollution is emitted concentratedly on the urban road.And,as the backwardness of the urban road network and related facilities,traffic jams and congestion becomes increasingly serious,furthermore,the pollution of vehicle emissions draws a worse damage toward our living environment day by day.Thus,surveys about comprehensive control of vehicle emissions has become a very urgent job.The formation and diffusion mechanism of vehicle emissions is analyzed firstly in the paper,and it takes gasoline (diesel) engines as well as the moving cars as research objects,studies the influencing factors and diffusion mechanisms of vehicle emissions by the means of theoretical analysis.Then,as the basis of it,according to the law about vehicle emissions pollutant,the paper mainly studys emission control technology and comprehensive application technology on CO,HC,NOx,and particle which is mainly existed in vehicle emissions.Now,the main control technologies at home and abroad are engine inside control technique and engine outside control technique.This paper combines the mentioned two techniques with external environment control technique horizontally,and proposes "Engine inside-Engineoutside-Externalenvironment"comprehensive control technique,besides,generally introduces the application about the technique.The author approves that the comprehensive application about three techniques can be analyzed from short-term application and long-term application.In the short-term application, to achieve the aim of controlling urban autos emissions on time,lower emissions engine should be used firstly,then,control and management of urban traffic should be actively implemented scientifically.In the long-term application, to begin with,External Environment Control Technique needs to develop and apply mainly,simultaneity,technical countermeasure also should be taken into account in the traffic planning.Secondly,endeavor after the development and application of the "Engine inside-Engine outside control technique",and stick to fulfilling the Motor vehicle inspection and maintenance program and the enhancem about traffic planning.Thirdly,focus on the traffic planning program as well as the implementation of traffic management measures.After the three steps,the vehicle emissions could be in a sustainable and effective control,besides,the cost and effect are mostly optimized too.The proposed ideas of comprehensive control techniques and comprehensive applications are based on the study on the comprehensive control of the urban traffic emissions in china.It may be helpful to improve the urban's air conditions, and has a certain theoretical and practical significance on the coordinated development of urban traffic.