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Method for operating an electric or hybrid vehicle with shiftable transmission and electric or hybrid vehicle

A technology for hybrid vehicles and gearshift transmissions, which is applied to the layout of multiple different prime movers of hybrid vehicles and general power plants, and road vehicle drive control systems. It can solve the problems of expensive adaptation and avoid serious heat generation. Effect

Active Publication Date: 2016-08-24
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This adaptation with correction factors to account for a larger number of influencing parameters is expensive

Method used

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  • Method for operating an electric or hybrid vehicle with shiftable transmission and electric or hybrid vehicle
  • Method for operating an electric or hybrid vehicle with shiftable transmission and electric or hybrid vehicle
  • Method for operating an electric or hybrid vehicle with shiftable transmission and electric or hybrid vehicle

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Embodiment Construction

[0034] exist figure 1 In the illustrated graph 10, the torque development and the power development of the electric motor 12 of the vehicle 14 are shown as a function of speed at different states of charge of the battery 16 of the vehicle 14 (cf. image 3 ). On the abscissa 18 of the diagram 10, the speed of the electric motor 12 in revolutions per minute [l / min] is indicated, the first ordinate 20 its torque in Nm, the second ordinate 22 Indicates its power in kW.

[0035] A first curve 24 illustrates the development of the torque of the electric motor 12 with increasing speed when the battery 16 of the vehicle 14 has a high, in particular maximum, state of charge. According to a first curve 24 , the torque first remains constant and then decreases when a certain speed 26 is reached. Another curve 28 illustrates the progression of the power delivered by the electric motor 12 when the battery 16 has a high state of charge. Thus, power reaches a maximum value 30 at speed 26...

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PUM

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Abstract

The invention relates to a method for operating an electric or hybrid vehicle with shiftable transmission, in which at least one electric motor is employed for propelling the vehicle. Upon reaching a shift threshold, a shift operation is performed in the transmission of the vehicle, wherein a value specifying the shift threshold is varied depending on at least one parameter. As the at least one parameter, a speed (26, 36) is used, at which a power provided by the at least one electric motor for propelling the vehicle has a maximum (30, 38). Furthermore, the invention relates to an electric or hybrid vehicle.

Description

technical field [0001] The invention relates to a method of operating an electric or hybrid vehicle with a shiftable transmission, wherein at least one electric motor is used for propulsion of the vehicle. When a shift threshold is reached, a shift operation takes place in the vehicle's transmission. Here, the value of the specified shift threshold is varied as a function of at least one parameter. Furthermore, the invention relates to a vehicle having at least one electric motor formed for propulsion of the vehicle. Background technique [0002] DE 44 38 914 A1 describes an electric vehicle with an electric motor for propelling the vehicle and a transmission controller for controlling the gearwheels of an automatically shiftable transmission. Three different methods of the gear selection function are provided for optimal consumption-dependent shifting. In the first method, the optimal state of the shift line according to consumption is stored in the transmission controll...

Claims

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Application Information

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IPC IPC(8): F16H61/02
CPCB60K6/48B60W10/10B60W20/00F16H61/0213B60K2006/4825B60W2510/085B60W2510/244B60W2510/246F16H2061/0096Y10S903/919Y10S903/945Y02T10/62B60W10/08F16H2059/145F16H2059/363B60K6/547B60W20/30B60Y2200/92B60Y2300/70F16H59/48F16H59/72F16H59/78
Inventor 安德里亚斯·佩茨塞巴斯蒂安·希伯本杰明·科内费尔阿恩·赫尔曼杰拉尔德·里德罗曼·施特拉塞尔
Owner AUDI AG
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