Method for measuring oil consumption of hybrid electric vehicle

Abstract

The invention discloses a method for measuring the oil consumption of a hybrid electric vehicle. The method comprises the steps as follows: the NEC (Net Energy Change) of a power battery pack of the hybrid electric vehicle is calculated during the running process; when the percentage of the NEC is less than 1 percent of the total energy consumption, the true value of the oil consumption quantity is a measured value of the oil consumption quantity; when the percentage of the NEC is more than 1 percent of the total energy consumption, the NEC of the battery pack is converted to equivalent mileage; if the NEC is more than zero, that is, the power battery pack outputs energy to the outside, the true mileage is the balance of measured mileage after deducting equivalent mileage, and the oil consumption quantity corresponding to the true mileage is the true value of the oil consumption quantity; and if the NEC is less than zero, that is, the power battery pack absorbs energy, the true mileage is the sum of the measured mileage and the equivalent mileage, and the oil consumption quantity corresponding to the true mileage is the true value of the oil consumption quantity. The method considers the energy conversion efficiency of batteries, the calculated value is more accurate, the provided equivalent mileage method for correcting the oil consumption of the hybrid electric vehicle can simplify the testing process, and the method is simple and effective.

Description

technical field [0001] The invention relates to the technical field of electric vehicle testing, in particular to a method for measuring fuel consumption of a hybrid electric vehicle. Background technique [0002] The development of electric vehicles is the fundamental way to meet the challenges of energy security, environmental pollution and climate change, and to maintain the sustainable development of my country's automobile industry; it is a strategic opportunity to respond to the technological change of automobile power electrification and realize the technological transformation and technological leap of my country's automobile industry; Strategic choices for industries and new economic growth points. After the support of the "863" two consecutive five-year plans, my country has basically established an electric vehicle power system technology research and development platform with independent intellectual property rights, and initially formed a supporting research and ...

AI Technical Summary

Problems solved by technology

Compared with traditional vehicles, the power system of hybrid electric vehicles has undergone major changes. The addition of energy storage devices makes the fuel consumption testing and evaluation methods of traditional vehicles no longer applicable to hybrid electric vehicles.

However, the fuel consumption test and evaluation methods of hybrid electric vehicles currently promulgated and implemented generally have the problems of inaccurate calculation of the net energy change of the power battery pack and too complicated fuel consumption correction test methods, which make the existing fuel consumption test and evaluation methods of hybrid electric vehicles different from the real ones. There are deviations between the results, which cannot be widely recognized by various manufacturers

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