关键词: 城建标载；混合动力系统；匹配设计；解决方案

Abstract: With the release of the "dual-carbon target" and the update of national standards, there is a higher requirement for the economic efficiency of heavy commercial dump trucks. The hybrid solution integrates the long transportation mileage of fuel vehicles and the low-carbon transportation advantages of new energy vehicles, and has received widespread attention in the commercial vehicle market. For the city and construction standard-payload transportation market, based on the revised content of national standards and the typical working conditions of the market, a plug-in hybrid vehicle motor battery matching method is proposed. The design indicators are the pure electric mode power demand of the China heavy-duty commercial vehicle test cycle-dumper (CHTC-D) working condition, the braking recovery power of the typical working conditions of the market, and the maximum climbing angle of the vehicle, and the driving motor power is determined based on these indicators. The design indicators are the peak power of the motor and the pure electric range, and the power battery capacity is determined based on these indicators. The proposed solution provides a comprehensive solution for the vehicle. The Cruise simulation analysis results and the test results of the chassis dynamometer show that the CHTC-D working condition fuel consumption is lower than the fourth-stage fuel consumption limit by 6.52%, the pure electric range is more than 50 km, the total time of the CHTC-D test in pure electric mode is less than 15 s, and the typical working condition fuel saving rate is 16.88%. These results verify the accuracy of the vehicle solution, meet the requirements of national standards and market competition, and have good application prospects.

Key words: urban construction standard load; hybrid power system; matching design; solution