Unlock instant, AI-driven research and patent intelligence for your innovation.

Planetary transmission

A technology of planetary transmissions and transmissions, applied in vehicle gearboxes, transmissions, transportation and packaging, etc., which can solve problems such as high drag loss, large structural length, and high component consumption

Active Publication Date: 2014-05-28
ZF FRIEDRICHSHAFEN AG
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heretofore, however, a smaller part of the transmission's components was installed in the radially inner installation space of the electric machine, or the electric machine was arranged laterally of the transmission, thus requiring high component consumption and resulting in a large overall length. , or in planetary transmissions despite the built-in electric machine, in which friction shifting elements are still used, which cause relatively high drag losses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Planetary transmission
  • Planetary transmission
  • Planetary transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Accordingly, figure 1 A planetary transmission of a hybrid drive train of a motor vehicle is shown, which includes three simple planetary gear sets RS1, RS2, RS3 and four shifting elements B03, K45, K56, K36, wherein the shifting elements B03, K45 and K35 is designed as a claw shifting element, whereas shifting element K56 can be designed as a claw shifting element or as a load shifting element, in particular as a friction shifting element. For the sake of illustration, the designations of the shifting elements are associated with the shafts or housing parts explained below that can be coupled to one another via the shifting elements.

[0037] In the first planetary gear set RS1 , the central sun gear SR1 is connected to a housing-fixed component, not shown in detail. The outer ring gear HR1 can be connected to a housing-fixed component via a shifting element B03 designed as a claw brake. The ring gear HR1 can also be coupled via an associated shaft W3 and a further s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a planetary transmission for a hybrid drive of a motor vehicle, having three coupled planetary gear sets (RS1, RS2, RS3), having a plurality of shift elements (B03, K14, K15, K26, K25, K36, K45, K56) and having at least one electric machine (EM) which is assigned to a shaft (W1, W2, W3, W4, W5, W6) within the transmission, wherein in a first planetary gear set (RS1), the internal gear (HR1) can be connected to a component fixed with respect to the housing and the planet carrier (PR1) is connected in terms of drive to the internal gear (HR2) of a second planetary gear set (RS2), wherein in the second planetary gear set (RS2), the planet carrier (PT2) is connected to the internal gear (HR3) of a third planetary gear set (RS3) and the sun gear (SR2) can be driven by a transmission input shaft (GE), and wherein in the third planetary gear set (RS3), the planet carrier (PT3) is connected to a transmission output shaft (GA). In order that the planetary transmission is of compact construction and is inexpensive to produce and efficient in operation, it is provided that the sun gear (SR1) of the first planetary gear set (RS1) is connected to the component fixed with respect to the housing, and that the sun gear (SR3) of the third planetary gear set (RS3) can be connected to the component fixed with respect to the housing and to the internal gear (HR1) of the first planetary gear set (RS1).

Description

technical field [0001] The invention relates to a planetary transmission according to the preamble of claim 1 . Background technique [0002] From DE 10 2007 005 438 A1 a planetary transmission with several planetary gear sets and multiple shifting elements is known, wherein an electric motor with its rotor is operatively connected to one of the planetary gear sets in order to support the torque exerted on the planetary gear sets for transmission . The drive shaft and the output shaft of the transmission are arranged coaxially with each other such that the drive means and the output means are diametrically opposed, and the electric machine is arranged coaxially with these two shafts. The electric machine radially surrounds the associated planetary gear set, wherein the rotor of the electric machine is fixedly connected to the ring gear of the enclosed planetary gear set. The ring gear can be fixed to the opposite housing ( ) member connection. The stator of the electric...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16H3/66B60K6/48
CPCY02T10/6256F16H2200/2041B60K2006/4816F16H3/62H02K7/116F16H2200/0047F16H2200/2064Y02T10/6221F16H2200/201B60K6/48F16H3/725F16H3/66F16H2200/2097Y02T10/62B60K6/365B60K6/547
Inventor 乌韦·格里斯迈尔斯特凡·沙尔伯恩德·瓦伦西克斯特凡·贝克克里斯蒂安·西卜拉
Owner ZF FRIEDRICHSHAFEN AG