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Operating method for automatic transmission of motor vehicle

A technology of automatic transmission and operation method, applied in the direction of brakes, brake components, mechanical equipment, etc., can solve the problems of damage, parts wear and driving comfort, and achieve the effect of reducing parts wear

Active Publication Date: 2020-02-21
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the gear selector is in the inertial flight phase, but it still tries to engage in the shift gear, this may cause "scratching" between the parts due to possibly very high rotational speed differences and thus Possible damage to parts wear (Bauteilverschleiß) and driving comfort (Fahrkomfort) due to disturbing noise

Method used

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  • Operating method for automatic transmission of motor vehicle
  • Operating method for automatic transmission of motor vehicle
  • Operating method for automatic transmission of motor vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] figure 1 with 2 Correspondingly, in the upper window is shown a diagram for illustrating the wheel speed gradient during braking by means of the active anti-lock braking system ABS, in which the left and right front wheels v of the motor vehicle R,VL ,v R,VR and the left and right rear wheels v R,HL ,v R,HR wheel speed v R, v R,VL ,v R,VR ,v R,HL ,v R,HR Relative time t is plotted.

[0050] In the lower window, figure 1 with 2 Accordingly, there is a diagram in which the state of lift of the driven wheel aR is plotted against time t.

[0051] here, figure 1 ABS braking without wheel lift is shown.

[0052] here, figure 2 is shown in which the driven front wheels on the left and right sides of the vehicle are braked by the ABS of the lane lift and is illustrated as follows, that is, in the case of a lift of the driven wheel aR,

[0053] - its wheel speed v R,VL ,v R,VR At a certain speed value less than, for example, based on the unraised and / or undrive...

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Abstract

The invention relates to an operating method for an automatic transmission, particularly for an automatic variable-speed transmission and / or dual-clutch transmission, for a motor vehicle. The automatic transmission can be operated in a cost-effective manner, particularly with reduced component wear and increased service life, and / or the driving comfort of the vehicle can be improved such that whenthe lifting of at least one driven vehicle wheel (aR) off the roadway during braking is detected by the operating method, then for the length of the braking process, in the event of an incomplete gearshift into a gear (G3) of the transmission, the engagement of a gear (G3) is prevented and or the beginning of a gearshift into a gear (G3) of the transmission is prevented.

Description

technical field [0001] The invention relates to a method of operating an automatic gearbox (automatisches Getriebe), in particular an automatic shift gearbox (automatisches Schaltgetriebe) and / or a double clutch gearbox (Doppelkupplungsgetriebe) for a motor vehicle with the features of patent claim 1 . Background technique [0002] Motor vehicle transmissions, such as automatic shift transmissions and / or dual clutch transmissions generally have at least one or more corresponding at least one specific gear or a plurality of corresponding specific gears for engaging the transmission gear adjuster (Gangsteller). Such a gear shifter can be designed and / or embodied, for example, in the form of a movable / displaceable clutch. In this case, the shifting gear rotation of the gear to be shifted or the gear stage to be engaged is then effectively connected to and decoupled or decoupled from the shaft of the gearbox, which may be designed, for example, as an idler gear. Thus, a gear ...

Claims

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Application Information

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IPC IPC(8): F16H61/16F16H59/54F16H61/682
CPCB60T8/175B60T8/17616B60T2240/06B60T2250/04B60T2260/04F16H59/54F16H61/16F16H61/682B60T2240/00F16H61/18F16H2061/163F16H2061/168
Inventor R.霍夫曼A.尚沙
Owner VOLKSWAGEN AG
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