Recently, the National Automobile Standardization Technical Committee (hereinafter referred to as the Automotive Standards Committee) convened dozens of vehicle and engine companies in Wuhan to exchange ideas on how to determine test methods and limits for fuel economy standards for heavy-duty commercial vehicles. When the domestic heavy-duty commercial vehicle fuel consumption limit standard (hereinafter referred to as the "standard") was introduced once again became the focus of domestic attention, the relevant experts said: due to a series of specific implementation problems, "Standard" may take two or three years Can be introduced.
Fang Maodong, chief engineer of the China Automotive Technology and Research Center, said last month that it is possible that the "Standard" will be introduced within two or three years, because "it is hard to say what the heavy vehicle limit is justified is reasonable".
An expert on product standards has listed three problems: it is difficult to build a complete vehicle test room; the determination period of the target limit value is long; and the technical route of test methods and working conditions is difficult to determine.
The expert said that there are several steps to make in the development of the "Standard". First of all, it is to find out the status of use of heavy-duty vehicles throughout the country, and then determine the test methods. In order to determine the test method, we must collect data, collect data on the status of the vehicle, road conditions, driving status, and analyze and process data to determine a standard operating condition under simulated conditions. The collection of these data requires a lot of manpower, material resources, and financial resources to do, and it takes a lot of time. After determining the test methods and working conditions, it is necessary to turn this method into a standard that can be implemented in the laboratory. Domestically, there must be a corresponding laboratory to be able to achieve product inspection.
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