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A kind of rde working condition library development and use method

A working condition, chi-square test technology, applied in the field of transportation, can solve the problems of unreasonable window compliance judgment method, low measurement equipment accuracy, uncontrollable boundary conditions and so on.

Active Publication Date: 2021-09-03
CHINA AUTOMOTIVE TECH & RES CENT +1
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Problems solved by technology

[0005] In view of this, the present invention aims to propose a method for developing and using the RDE working condition library to solve the unreasonable judgment method of the proportion of each speed range in the existing RDE test method, the window compliance judgment method and the actual road test has boundary conditions Problems such as uncontrollability and low accuracy of measuring equipment

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  • A kind of rde working condition library development and use method
  • A kind of rde working condition library development and use method
  • A kind of rde working condition library development and use method

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] The invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] Below in conjunction with accompanying drawing, the inventive method is described in further detail, figure 1 Build method flows for the RDE test case library.

[0035] Acquisition of vehicle speed data by autonomous driving method

[0036] Select 70 private cars in 5 cities, use the on-board data collection terminal to continuously collect driving data for a total of three months from September 1 to November 30, and send them to the working condition data management platform in real time through the GPRS network. Accumulated mileage of 250,000 kilometers.

[0037] short stroke division

[0038] The vehicle starts from the start to stops at the destination, and is affected by road tra...

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Abstract

Aiming at the problems of unreasonable judgment methods of the proportion of each speed range and window compliance in the existing RDE test method, uncontrollable boundary conditions and low precision of the measurement equipment in the actual road test, the present invention is based on macroscopic traffic volume big data, Chinese industrial The condition curve and the large database of China's working conditions provide a method for developing the RDE working condition library. The present invention uses large traffic data to calculate the weights of each speed interval, which can be more in line with the real situation of vehicles driving in the city, and RDE tests are performed on the rotating hub to avoid unreasonable judgment methods of RDE window compliance and the fact that the boundary conditions of the actual test cannot be met. Control and measurement equipment accuracy is low and so on. The method for developing and using the RDE working condition library of the present invention can better reflect the actual emission of the vehicle.

Description

technical field [0001] The invention belongs to the field of transportation, and in particular relates to a method for developing and using an RDE working condition library. Background technique [0002] Driving conditions are a comprehensive reflection of factors such as driver characteristics, road characteristics, vehicle characteristics, traffic characteristics, and climate characteristics in a region to a certain extent. Automotive product testing conditions are an important common basic technology in the automotive industry, and are the basis for testing methods and standard limit values ​​for all relevant indicators of automobiles. At present, the NEDC (New Europe Driving Cycle) test cycle is used in GB18352.1 to GB18352.5 light vehicle pollutant emission limits and measurement methods and GB / T19233 light vehicle fuel consumption test method. In the China VI stage, the working conditions will use the WLTC (World Light Duty Vehicle Test Cycle) test cycle, neither NEDC...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/21G06F16/29G06F30/20
CPCG01M17/007
Inventor 刘昱李孟良李菁元安晓盼于晗正男胡熙汪洋
Owner CHINA AUTOMOTIVE TECH & RES CENT
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