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Method for synchronisation of a first transmission component

A technology of transmission and synchronizer, which is applied to the arrangement of multiple prime movers of general power plants, vehicle components, elements with teeth, etc. It can solve the problems that the demand for drivability still exists and reduce the torque interruption time Effect

Active Publication Date: 2020-05-29
NINGBO GEELY AUTOMOBILE RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]Despite actions in this area, there is no need to improve transmission for hybrid or pure electric vehicles including automatic stepping gear transmissions and electric traction motors The demand for drivability of the system still exists

Method used

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  • Method for synchronisation of a first transmission component
  • Method for synchronisation of a first transmission component
  • Method for synchronisation of a first transmission component

Examples

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Embodiment Construction

[0070] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thorough and complete illustration. Throughout the specification, like reference numerals refer to like elements. The drawings are not necessarily to scale and certain features may be exaggerated in order to better illustrate and explain the exemplary embodiments of the present disclosure.

[0071] figure 1 A first exemplary embodiment of a hybrid electric powertrain 1 for a vehicle according to the present disclosure is shown. The specific exemplary embodiment relates to a parallel hybrid electric vehicle with an internal combustion engine 4 and an electric traction motor 2 integrated into a step-gear transmission...

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Abstract

The present disclosure relates to a method for performing rotational speed synchronisation of a first transmission component having a first initial rotational speed (Omega_initial) with a second transmission component having a second initial rotational speed, so that they rotate with the same final rotational speed (Omega _final) during a gear switch from an initial driving gear to a final drivinggear in a stepped gear transmission (3) for a hybrid electric or electric drive train having an electric traction motor (2). The method comprising calculating a total frictional work resulting from performing the total rotational speed synchronisation by means of a mechanical synchroniser (25) of the stepped gear transmission (3) only, and if the calculated total frictional work exceeds a maximalfrictional work (Wlim) of the mechanical synchroniser (25), performing the rotational speed synchronisation by means of both the electric traction motor (2) and the mechanical synchroniser (25). Thepresent disclosure also relates to a corresponding drive train (2) for a hybrid electric or electric vehicle.

Description

technical field [0001] The present disclosure relates to a method for performing rotational speed synchronization of a first transmission assembly having a first initial rotational speed ω_initial and a second transmission assembly having a second initial rotational speed such that they are used in a hybrid with an electric traction motor Rotates at the same final speed ω_final during a shift from an initial drive gear to a final drive gear in a stepping gear transmission of an electric drive train or a purely electric drive train. [0002] The present disclosure also relates to a drive train for a hybrid electric vehicle or a pure electric vehicle, wherein the drive train includes a step gear transmission having a plurality of driving gears and at least one mechanical synchronizer, an electric traction motor and a transmission control unit . [0003] Although the present disclosure has been described primarily in relation to passenger cars, the present disclosure is not limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/36
CPCF16H61/0403F16H2061/0422F16H2061/0418Y02T10/62B60K6/26B60K6/28B60K6/36B60K6/38B60W10/08B60W10/11B60W20/30B60W2510/1005B60W2510/244B60W2540/10B60Y2200/91B60Y2200/92F16H59/18F16H59/38F16H59/70F16H61/688F16H2059/147F16H2059/148F16H2059/6807B60W2710/08B60W30/19B60W2710/10
Inventor M·皮拉查
Owner NINGBO GEELY AUTOMOBILE RES & DEV CO LTD