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Method for estimating electric energy demand of motor vehicle for predetermined driving route

A technology for motor vehicles and vehicles, applied in the direction of motor vehicles, hybrid vehicles, power management, etc., can solve problems such as not taking into account

Pending Publication Date: 2022-06-07
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The method according to the prior art has the disadvantage that, in fact, the vehicle-specific data are not constant but can vary more or less, which is not taken into account in the prior art

Method used

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  • Method for estimating electric energy demand of motor vehicle for predetermined driving route
  • Method for estimating electric energy demand of motor vehicle for predetermined driving route

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0101] Figure 1 Schematically shows the forces acting on the motor vehicle during driving and the equations used within the scope of the method.

[0102] During driving, the driving force F of the motor that acts on the motor vehicle e-motor and the driving resistance F in reverse road-load and acceleration force F acc 。

[0103] Drive resistance F road-load Contains rolling resistance F roll , Air resistance F air and the force F that slows or accelerates a motor vehicle due to uphill or downhill climb 。

[0104] For acceleration force F acc , apply as follows: F acc ＝m veh *a veh 。

[0105] If you want to consider the rotational acceleration, apply the following: F acc ＝(e i *m veh,leer +m add )*a veh , where e i is a factor, m veh,leer Indicates the vehicle no-load mass, m add Indicates the quality of the goods, including the occupants.

[0106] In the present embodiment, equation P is used e-motor ＝P road-load +m veh *a veh *v veh thereinto

[0107] -P e-motor Indicates the d...

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PUM

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Abstract

The invention relates to a method for determining a functional relationship between the driving resistance and the speed vveh of a motor vehicle comprising an electric machine of a torque source for driving and a storage device for electrical energy. The invention discloses a method for determining a functional relationship between the driving resistance and the speed vveh of a motor vehicle comprising an electric machine for a torque source for driving and a storage device for electrical energy, with the aim of more accurately estimating the electrical energy demand for a predetermined travel route compared to the prior art. The invention is achieved by a method in which:-the driving resistance is represented by equations having n unknown quantities and m available known quantities,-during operation of the motor vehicle, i (i > = n) equations are established at different times t, and m available known quantities are given, such that an undetermined equation set having i equations is obtained, and determining a functional relationship between the driving resistance and the speed vveh of the motor vehicle by means of an equation set.

Description

Technical field [0001] The present invention relates to a kind for determining the driving resistance and speed of a motor vehicle v veh A method of functional relationship between the motor vehicle comprises a motor that acts as a torque source for the drive and a storage device for electrical energy. Background [0002] There has been a lot of work on developing vehicle drives to minimize fuel consumption. In addition, efforts are being made to reduce pollutant emissions so that future emission limits can be met. [0003] Therefore, according to existing technology, electric drives are used more and more frequently in automobiles, often combined with internal combustion engines as hybrid drives. [0004] In urban transportation, electric drives as emission-free drives undoubtedly have their rationality or advantages. In addition, there are many other related reasons, for example, the use of electric drives can reduce the drive noise of the vehicle. [0005] In addition, in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/02B60W40/13
CPCB60W40/02B60W40/13B60W2520/10B60W2520/105B60W2530/16B60W2555/20B60L15/2045B60L2240/12B60L2240/14B60L2240/26B60L2240/423B60L2240/54B60L2240/642B60L2240/647B60L2260/54B60W20/00B60W40/1005B60W2530/209B60W2510/244B60W2552/40B60W2530/10B60W2520/125B60W2552/15B60W2520/12B60W2510/0666B60W2510/085B60W20/10
Inventor 马库斯·埃斯皮克大卫·范贝伯
Owner FORD GLOBAL TECH LLC