基于碳平衡法的汽车油耗智能测试技术

针对汽车油耗直接测试法的不足和目前碳平衡法存在的问题,由取样系统、流量传感器和排放分析仪等构建汽车油耗测试系统，采用虚拟仪器技术，进行汽车油耗智能测试技术研究。基于碳平衡法建立与国情相适应的汽车油耗测试计算模型，根据测试系统功能要求，进行油耗测试系统设计。通过实车试验，并与标准油耗仪检测结果对比，进行测试数据处理分析。通过油耗曲线拟合和线性回归，对理论油耗计算数学模型进行修正。建立的油耗测试系统取样方便快捷，能在各种条件下测试汽车油耗，测试精度达到3.5%。能实现汽车油耗的快速、不解体检测。

Intelligent testing technology of vehicle fuel consumption based on carbon balance method

According to the defect of vehicle fuel consumption directly testing method and the current problems existing in the carbon balance method, intelligent testing method for vehicle fuel consumption was studied based on virtual instrument technology, which including sampling system, flow sensor and emission analyzer. The vehicle fuel consumption calculation model suitable for China's specific condition was established based on carbon balance method, and fuel consumption test system was designed according to the test system function requirements. Through the experiments, comparison with fuel consumption meter test results for the real car was conducted based on the data processing analysis. The fuel consumption mathematic calculation model was modified through the curve fitting and linear regression,. The consumption sampling testing system is convenient to collect samples, and can satisfy the various testing conditions with a precision of 3.5%. It can realize fast inspection of vehicle fuel consumption without disassembly testing.