Method for controlling switchable planetary gear set in belt pulley plane of drive train

一种行星变速器、动力总成的技术，应用在通用动力装置的多个不同原动机的布置、具有机械动力储存器的起动装置、皮带/链条/齿轮等方向，能够解决受损、材料磨损舒适性、制动器困难等问题

Inactive Publication Date: 2013-08-21
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this case, controlling the brake of the switching ratio is difficult and must be done precisely in order to avoid sudden torque changes, which can lead to material wear and loss of comfort

Method used

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  • Method for controlling switchable planetary gear set in belt pulley plane of drive train
  • Method for controlling switchable planetary gear set in belt pulley plane of drive train
  • Method for controlling switchable planetary gear set in belt pulley plane of drive train

Examples

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Embodiment Construction

[0022] figure 1 A motor vehicle drivetrain 1 with an internal combustion engine 2 , a belt drive 3 , a friction clutch 4 , a transmission 5 and drive wheels 6 is shown schematically.

[0023] With its crankshaft 8 , the internal combustion engine drives both a transmission 5 , which may be configured as a shift transmission, automatic transmission, dual clutch transmission and the like, and also a belt drive 3 . The belt drive 3 contains a starter-generator 7 whose rotor 9 is arranged to be connected to the crankshaft 8 of the internal combustion engine by means of oppositely acting freewheels 10 , 11 shifted by means of an actuator not shown. The connection is rotationally closed, for example concentrically or by means of pulleys and belts (not shown). Here, the first freewheel 10 switches the torque flow from the crankshaft 8 to the rotor 9 and blocks it in the opposite direction, while the second freewheel 11 releases the torque flow from the rotor 9 to the crankshaft 8 a...

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PUM

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Abstract

The invention relates to a method for controlling a belt drive of a drive train of a motor vehicle. The belt drive is equipped with a planetary gear set which switches a transmission ratio between a starter-generator and an internal combustion engine, said planetary gear set having an internal gear which can be connected fixedly with respect to a housing by means of a brake;a web which is connected to a crankshaft of the internal combustion engine of the drive train and which has planet gears arranged over the circumference; a sun gear which is connected in a rotationally engaged manner to a rotor of the starter-generator and to at least one auxiliary unit; a first switchable freewheel which blocks in the torque direction from the rotor to the crankshaft; and a second switchable freewheel which blocks in the torque direction from the crankshaft to the rotor. In order to improve the switching accuracy of the brake and thereby avoid high torque loading during the closing of the brake, a characteristic curve of the torque that can be transmitted via the brake versus the actuating travel thereof is adapted.

Description

technical field [0001] The invention relates to a method for controlling a belt drive of a drive train of a motor vehicle, which belt drive has a switching ratio between the starter-generator and the internal combustion engine, which can be controlled by means of a brake. A planetary transmission with a ring gear connected in a fixed manner to the housing; a web connected to the crankshaft of the internal combustion engine of the powertrain with planetary wheels arranged on the circumference; a rotor connected to the starter-generator and at least one Auxiliary group rotationally lockingly connected sun gear; blocked, switchable first free wheel in torque direction from said rotor to said crankshaft; in torque direction from said crankshaft to said rotor Upper blocking, switchable second free wheel. Background technique [0002] Belt drives have long been known in motor vehicle drivetrains, in particular on a pulley plane of an internal combustion engine opposite to the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N15/04F16H3/54F02B67/06B60L50/16
CPCF02B67/06F02N15/046F16H3/54B60K6/383B60K6/485B60K2006/381B60K2006/4841B60W2710/025Y02T10/62F16H37/02
Inventor M·迪尔泽D·赖茨
Owner SCHAEFFLER TECH AG & CO KG
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