1, related presentations
environmental standards is based on local fuel standards enacted, mainly to improve human quality of air, on high oil prices and develop serious urban air pollution automotive environmental standards.
of Beijing from 2004 January 1, emissions standards for motor vehicles from the current Euro I to Euro II, instead, by 2008, the formal implementation of the Euro III standard.
It is common in our European car and Europe Ⅱ Ⅰ standards like terms, refers Emission Directive EEC then issued. Such as instructions for heavy-duty diesel vehicles (mass greater than 3.5 t) “EEC88 / 77” is divided into two phases, Phase A (i.e. Euro Ⅰ) applied to a vehicle registered after October 1993; the stage B (i.e. Euro Ⅱ ) applicable to vehicles registered after October 1995.
Euro III emission standards on pollution is a real sense in Europe, the United States is implemented. It is understood that the car is controlled by the key environmental technologies is good emissions, reducing harmful gas emissions, while the gasoline engine control system (ie EMS technology) it is environmentally friendly cars as well as key technologies to achieve Euro III necessary. EMS application techniques can effectively reduce the emission of pollutants by 50% (plus TWC technology reduces emissions 95%), 5-15% fuel savings, but also improve the power of 10-25%. Many are known as environmentally friendly vehicle technology since the EMS was able to install the product so confident.
Automotive emissions are CO (carbon monoxide), HC + NOx (nitrogen oxides and hydrocarbons), the PM (particulate, soot) and other harmful gas discharged from the exhaust gas. They are generated by the engine during the combustion of harmful gases for power. The reason for these different harmful gases, CO is incomplete fuel oxidation intermediate products, the oxygen is insufficient when CO is generated, and a large concentration of the mixture will be nonuniform mixed gas of CO in the exhaust gas increases. HC is unburned fuel material, since the uneven air-fuel mixture, the combustion chamber wall causes of cold part of the fuel combustion is not enough time toThey are emitted. NOx is a substance that fuel (gasoline) is produced in the combustion process. PM is generated during combustion of fuel hypoxia a substance, the most obvious of which the diesel engine. Because the diesel engine using compression ignition mode, diesel fuel cracking under heat and pressure more easily visible to the naked eye to produce a large amount of soot. In order to suppress the generation of these harmful gases, prompted automobile manufacturers to improve products in order to reduce these sources produce harmful gases, Europe and the United States to develop the relevant vehicle emission standards. European standard which is our reference vehicle emission standards, the current domestic new car will be marked engine exhaust emissions to meet European standards.
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vehicle emissions in the European legislation (directive) standard is based on emissions (g / km) car engines to calculate distance traveled, because this degree of automobile pollution of the environment is reasonable. Meanwhile, the European emission standards for cars will be divided into the total mass of not more than 3500 kg (light vehicles) and the total mass of over 3500 kg (heavy vehicles) categories. Light vehicles regardless of gasoline or diesel vehicles, vehicle tests were performed on a chassis dynamometer. Since the heavy vehicle weight machine, loaded with the engine in the engine test bench.
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Automotive Environmental