A statistical method for vehicle fuel consumption

Abstract

The invention discloses a method for vehicle oil consumption statistics. According to the method, the OBD interface of an oil consumption statistic device is connected to the OBD interface of a vehicle-mounted diagnosis system so as to collect the realtime work condition data of the vehicle; according to the information such as the equivalent ratio Vlambda of a linear or broadband type oxygen sensor, the air intake flow value Vmaf of the vehicle engine, and the like, by combining the vehicle's archival information, the realtime oil consumption of the vehicle can be calculated by an instant oil consumption calculation formula, and thus the oil consumption statistics can be achieved. The OBD interface of an oil statistic device is inserted into an original OBD interface of a vehicle to collect the vehicle work condition data, the original circuit of the vehicle does not to be broken or changed, the installation is convenient, the method is practical and safe, the quality guarantee of the vehicle will not be influenced, and thus the method can be accepted by the customers more easily. The oil consumption calculated through the work condition data will not be influenced by the external environment or road condition during the driving process, the precision is high, moreover, the realtime oil consumption of the vehicle can be calculated, and the oil consumption data precise synchronous comparison and analysis can be realized.

Description

technical field [0001] The invention relates to a statistical method for fuel consumption of vehicles, in particular to a statistical method for accurately calculating real-time fuel consumption of vehicles. Background technique [0002] In recent years, with the continuous and rapid development of my country's economy and society, cars have greatly facilitated people's daily travel and production and business activities. The rigid demand for car purchases is strong, the number of cars continues to grow rapidly, and the number of motor vehicles and drivers has increased rapidly. . As the global energy crisis intensifies, oil prices continue to rise, and vehicle operating costs are also increasing. While cars bring convenience to people's production and life, they also cause huge energy loss and environmental pollution. How to achieve energy conservation and emission reduction has become a major issue in today's world. Important research topics, including how to accurately ca...

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Problems solved by technology

[0003] The traditional fuel consumption statistics method is relatively mechanical, complicated to install, high in manual participation, and low in accuracy, and cannot calculate the real-time fuel consumption of the current vehicle in real time. Synchronized comparative analysis, real-time is not enough, the effect in practical application is unsatisfactory, there are many shortcomings, mainly adopt the following methods:

[0004] One is to check the current oil volume of the fuel tank through the display on the instrument panel of the vehicle. Due to the large interval between the scale values ​​of the oil volume on the instrument panel, you can only roughly see the general situation of the current fuel tank oil volume, and cannot accurately and truly reflect the current fuel volume of the fuel tank. The error is large Big;

[0005] The second is to use the volumetric method, by installing an oil float sensor, to measure the scale of the remaining fuel in the current fuel tank. Since it is necessary to install an oil float sensor in the fuel tank, and the fuel tanks of various models have different shapes, the installation is complicated, the engineering amount is large, and it is difficult to implement. At the same time, the bumps of the vehicle caused the oil float to shake, and the error of the collected value was large;

[0006] The third is to use the flow meter method or the flow meter method, which must be connected to the oil supply system of the engine in series, which is inconvenient to install and use, and at the same time causes a safety hazard to the engine, with a low safety factor

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