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针对现有汽车工业发展和保有量增加的情况,考虑汽车燃油消耗量成为评价燃油经济性的重要指标,如何降低燃油消耗量具有十分重要的意义.在重点分析碳平衡方法及其他一些参考文献的基础上,基于空燃比油耗量计算模型,提出了一种可随车携带的在线检测方法,并设计了以MSP430为主控制单元的燃油消耗检测系统,分析了其控制原理以及数据采集、计算等过程.最后,选用捷达GIX为试验车辆,分析处理试验数据,利用设计的空燃比油耗计算模型,得出理论计算油耗与实测油耗具有良好的一致性.试验结果表明,基于空燃比的燃油消耗检测方法对于随车在线检测具有可行性和一致性.
In view of the current situation of automobile industry development and the increase of the holding quantity, it is of great significance to consider the fuel consumption of the automobile as an important index to evaluate the fuel economy and how to reduce the fuel consumption. In the analysis of the carbon balance method and some other references Based on the calculation model of fuel consumption of air-fuel ratio, an on-line detection method that can be carried along the vehicle was put forward and a fuel consumption detection system based on MSP430 was designed. The control principle, data acquisition, calculation and so on Finally, Jetta GIX is selected as the test vehicle, the experimental data are analyzed and processed, and the calculated fuel consumption of the air-fuel ratio is calculated using the calculated model, which shows that the calculated fuel consumption is in good agreement with the measured fuel consumption.The test results show that the fuel consumption detection The method is feasible and consistent for on-line inspection of truck.