System and method for accurately measuring instantaneous oil consumption value of automobile

Abstract

The invention relates to a system and a method for accurately measuring instantaneous oil consumption value of an automobile. The system is characterized by comprising the following modules of: an air flow meter, a discharge analyzer, a chassis power measuring machine and main control equipment, wherein the air flow meter is used for measuring the volume V1 of instantaneous diluent air with high precision; the discharge analyzer is used for sampling in real time and measuring the concentration rho i1 of the instantaneous diluent air and the concentration rho I2 of mixed gas; the chassis powermeasuring machine is used for measuring instantaneous distance d of the automobile; and the main control equipment is used for reading the volume and the concentration of the instantaneous diluent air, the volume and the concentration of the mixed gas and the instantaneous distance measured by the system, calculating pollutant exhaust mass Mi in the instantaneous exhaust of the automobile according to the volume difference, the concentration difference and the instantaneous distance, converting the Mi into the mass of a fuel according to carbon element conservation, and finally dividing the mass by the density D of the fuel to accurately obtain the instantaneous fuel consumption FCi of the automobile.

Description

technical field [0001] The invention belongs to the technical field of automobile fuel consumption measurement, and relates to a system and method for accurately measuring instantaneous fuel consumption of automobiles, and is suitable for calculating fuel consumption of gasoline-engined and diesel-engined automobiles. Background technique [0002] With the development of automobile technology, the increasingly severe pressure of environmental deterioration and the crisis of oil depletion, people are paying more and more attention to the fuel consumption of automobiles. Accurate vehicle fuel consumption data plays a decisive role in the research of vehicle engine technology and the judgment of faults. [0003] At present, the carbon balance fuel consumption test of the chassis dynamometer is widely used in automobile companies, and the constant volume sampling system is used, but it can only measure the volume of the instantaneous mixed gas, and the urban operating conditions...

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Problems solved by technology

[0003] At present, the carbon balance fuel consumption test of the chassis dynamometer is widely used in automobile companies, and the constant volume sampling system is used, but it can only measure the volume of the instantaneous mixture, and the urban operating conditions of the car can be obtained by using the emission analyzer and the chassis dynamometer. The average fuel consumption value of urban and suburban conditions cannot accurately measure the instantaneous fuel consumption value

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