Method for operating a transmission and a transmission with at least two shifting devices
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A technology for shifting devices and transmissions, which is applied in transmission control, components with teeth, belts/chains/gears, etc. It can solve problems such as sticking and slipping, and achieve the effects of reducing costs, saving resources, and improving shifting quality
Inactive Publication Date: 2017-07-25
AVL LIST GMBH
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Abstract
Description
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Problems solved by technology
As a result, the so-called stick-slip phenomenon can occur in the shifting device, which acts in an undesirable manner on the shifting mass
In addition, undesired effects can occur on other transmission components, especially strong loads and contact changes, torque peaks or torque pulses on the tooth surfaces of the gears
Method used
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[0068] figure 1 The drive train 6 of the transmission 1 according to an embodiment of the invention is shown in a principle block diagram. The drive train 6 shown in this embodiment is that of a hybrid motor vehicle with an internal combustion engine 60 and an electromechanical energy converter 50 called an electric machine. By means of the transmission 1, torque can be transmitted from the internal combustion engine 60 and / or the electric machine 50 to an output pinion 70, wherein the output pinion 70 is connectable or connectable to driveable wheels of the hybrid motor vehicle.
[0069] Conversely, torque can also be transmitted from output pinion 70 to internal combustion engine 60 and / or electric machine 50 , in particular in the sense of a resistive torque operation of internal combustion engine 60 and / or by means of electric machine 50 in order to recover energy.
[0070] In this embodiment, the transmission 1 has a first shifting device 10 , a second shifting device 20...
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Abstract
The invention relates to a method for shifting gears of a transmission (1) of a motor vehicle, said transmission having an input side (11, 21, 31, 41) and an output side (13, 23, 33, 43) respectively At least two friction-locking shifting devices (10, 20, 30, 40), wherein the rotational speed of the input side (11, 21, 31, 41) and the rotational speed of the output side (11, 21, 31, 41 ) between each other defines a slip coefficient (S), and wherein each of said shifting devices (10, 20, 30, 40) has at least one power shift state in which the input side (11, 21, 31, 41) and output side (13, 23, 33, 43) are interconnected to transmit torque; and an idle shift state in which the input side (11, 21, 31, 41) and output sides (11, 21, 31, 41) are substantially disconnected from each other, and wherein a first of said shifting devices (10) is switched from its power shifting state to its idle shifting state, or reverse shifting, and the second shifting device in the shifting device (20) is shifted from its idle shifting state to its power shifting state according to its slip coefficient (S20) in the following cases state, or reverse shifting, that is, when the slip coefficient (S20) after zero crossing, especially in the sense of slip reversal, has a different Another symbol in between.
Description
technical field [0001] The invention relates to a transmission for operating a motor vehicle having at least two shifting devices for shifting. Furthermore, the invention relates to a transmission with at least two shifting devices as well as to a motor vehicle and a drive train with such a transmission. Background technique [0002] The invention is described with reference to the use of a road-based motor vehicle with a hybrid drive architecture, in which a transmission having at least two input shafts and at least one output shaft is used multiple times, in particular for combining torque. However, it is pointed out that the device / method according to the invention can also be used in any other application, in particular in the field of rail or water-composite motor vehicles, or in static applications, in particular in the field of power plants and / or buildings middle. [0003] A shifting sequence with at least two, in particular three, participating shifting devices u...
Claims
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Application Information
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