Method for determining an expected consumption value of a motor vehicle
First Claim
1. A method for determining an expected consumption value of a motor vehicle for a predetermined driving situation, comprising the steps of:
- a) acquiring and storing respective actual consumption values at each occurrence of the predetermined driving situation, wherein the predetermined driving situation is characterized with reference to at least one of a speed, a driven road category, an incline of a driven roadway and a traffic condition,b) checking based on the stored consumption values whether a statistically significant database for estimating a consumption exists for the predetermined driving situation, said statistically significant database defined by a median consumption and a mean interquartile range for each speed class,b1) if yes, determining the expected median consumption and determining therefrom a driving range for the motor vehicle,b2) if no, determining an estimated value for the expected consumption for the predetermined driving situation based on stored consumption values of the motor vehicle for another driving situation at a second speed belonging to a different non-overlapping second speed class having a median consumption that is comparable to the median consumption for the first speed class, wherein the interquartile ranges for the first and second speed class overlap,substituting the expected consumption value of the motor vehicle traveling with the first speed of the first speed class with the median consumption of the second speed class, anddetermining, from a remaining quantity of energy of the motor vehicle and the expected consumption value of the motor vehicle, the driving range of the motor vehicle.
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Abstract
A method for determining an expected consumption value of a motor vehicle for a predetermined driving situation—includes detecting actual consumption values and storing these values upon each occurrence of the predetermined driving situation, and further estimating the expected consumption value on the basis of the stored consumption values. Furthermore, a check is made whether the expected consumption value satisfies a predetermined significance criterion. If this is the case, the expected consumption value is used for a range determination for the motor vehicle; if this is not the case, an estimated value for the expected consumption is determined and used for range determination for the motor vehicle.
41 Citations
5 Claims
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1. A method for determining an expected consumption value of a motor vehicle for a predetermined driving situation, comprising the steps of:
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a) acquiring and storing respective actual consumption values at each occurrence of the predetermined driving situation, wherein the predetermined driving situation is characterized with reference to at least one of a speed, a driven road category, an incline of a driven roadway and a traffic condition, b) checking based on the stored consumption values whether a statistically significant database for estimating a consumption exists for the predetermined driving situation, said statistically significant database defined by a median consumption and a mean interquartile range for each speed class, b1) if yes, determining the expected median consumption and determining therefrom a driving range for the motor vehicle, b2) if no, determining an estimated value for the expected consumption for the predetermined driving situation based on stored consumption values of the motor vehicle for another driving situation at a second speed belonging to a different non-overlapping second speed class having a median consumption that is comparable to the median consumption for the first speed class, wherein the interquartile ranges for the first and second speed class overlap, substituting the expected consumption value of the motor vehicle traveling with the first speed of the first speed class with the median consumption of the second speed class, and determining, from a remaining quantity of energy of the motor vehicle and the expected consumption value of the motor vehicle, the driving range of the motor vehicle. - View Dependent Claims (2, 3, 4)
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5. An apparatus for determining an expected consumption value of a motor vehicle for a predetermined driving situation, comprising:
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a sensor determining quantities characterizing an actual driving situation, wherein the quantities comprise at least one of a speed, a driven road category, an incline of a driven roadway and a traffic condition, and actual consumption values of the motor vehicle, and a memory unit, and a control device coupled to the sensor and the memory unit by way of a bus system, the control device configured to a) acquire and store in the memory unit respective actual consumption values at each occurrence of the predetermined driving situation, b) check based on the stored consumption values whether a statistically significant database for estimating a consumption exists for the predetermined driving situation, said statistically significant database defined by a median consumption and a mean interquartile range for each speed class, b1) if yes, determine the expected consumption value based on the stored consumption values and determining therefrom a driving range for the motor vehicle, b2) if no, determine an estimated value for the expected consumption for the predetermined driving situation based on stored consumption values of the motor vehicle at a second speed belonging to a different non-overlapping second speed class having a median consumption that is comparable to the median consumption for the first speed class, wherein the interquartile ranges for the first and second speed class overlap, and to substitute the expected consumption value of the motor vehicle traveling with the first speed of the first speed class with the median consumption of the second speed class, and to determine, from a remaining quantity of enemy of the motor vehicle and the expected consumption value of the motor vehicle, the driving range of the motor vehicle.
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Specification