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Drive device for a motor vehicle

A driving device and motor vehicle technology, applied in the direction of motor vehicles, transmission devices, power devices, etc., to achieve the effect of improving the use effect

Active Publication Date: 2017-08-01
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This places a huge burden on the on-board power grid

Method used

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  • Drive device for a motor vehicle
  • Drive device for a motor vehicle
  • Drive device for a motor vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 The schematic diagram shows a drive for a hybrid motor vehicle with an internal combustion engine 10 , a transmission 12 with an integrated differential (not shown) for driving front wheels 14 of the motor vehicle.

[0025] Furthermore, the drive device has an electric motor 16 as a second drive source, which drives rear wheels 20 of the motor vehicle via a differential 18 , which is only schematically shown.

[0026] The electric machine 16 , which can be switched on as a motor or generator, is supplied with current via a traction battery 22 arranged in the motor vehicle, wherein the control and shifting processes in the transmission 12 and in the electric machine 22 take place via an electronic controller 24 , The electronic controller evaluates engine-specific data (load demand, rotational speed, etc.) and travel-specific data (speed, brake actuation, etc.) in a known manner.

[0027] The transmission 12 is here exemplarily an automatic transmission (for ex...

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Abstract

The invention relates to a drive device for a motor vehicle, comprising an internal combustion engine (10) which drives a transmission (12) which has a number of transmission stages which provide shiftable driving gears (1 to 6) in a traction mode in which the vehicle is driven by the internal combustion engine (10), namely from a starting gear (1) up to a highest driving gear (6). According to the invention, the transmission (12) has at least one transmission stage providing a thrust gear (7), which transmission stage cannot be shifted in the traction mode, but only in a thrust mode, in which the vehicle drags the internal combustion engine (12).

Description

technical field [0001] The invention relates to a drive device for a motor vehicle according to the preamble of claim 1 . Background technique [0002] Depending on the driving situation, the motor vehicle can be driven in traction mode, in which the motor vehicle is driven by a drive engine (internal combustion engine and / or electric machine), or in freewheeling mode, in which the motor vehicle is driven via the wheels. [0003] In the case of a vehicle, the thrust is cut off during freewheeling, wherein no fuel injection is carried out in order to save fuel. In this freewheel, the vehicle pulls on the powertrain. All powertrain components generate a drag torque that reacts against the drive torque. The drag torque depends on the engine speed. That is to say, the lower the speed of the internal combustion engine, the lower the drag torque. Therefore, in order to reduce the drag torque, during freewheeling, the transmission controller controls the automatic transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H3/00
CPCF16H3/00F16H61/0213F16H2061/0237F16H61/68B60K6/48B60W20/15B60W10/06B60W10/08B60W10/11B60W30/18072B60W30/18127B60W2030/18081B60W2510/0638B60W2710/065B60W2710/1005B60Y2200/92Y10S903/93Y02T10/62
Inventor J·温克勒K·福格特赫尔M·万斯内尔
Owner AUDI AG
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