US 4,289,044 AGranted

Motor vehicle transmission

AssigneeVolkswagenwerk Aktiengesellschaft

InventorsHeinz Dorpmund, Gerd Oberpichler

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Abstract

A motor vehicle hydrodynamic transmission is provided with a torque converter and a planetary gear train. In order to provide a compact transmission arrangement, the stator of the torque converter is connected to the planetary gear carrier by means of a freewheel, and the planetary gear carrier is connected to the housing by another freewheel. The planetary gear is also connected to the housing by a controllable brake. The brake and freewheel connecting the carrier to the housing are arranged radially outward from the planetary gear train. The second sun gear of the planetary gear train and the second brake, which acts on the second sun gear, are arranged on the side of the planetary gear train facing away from the torque converter. The output of the planetary gear train is a pinion, which is connected to the inertial gear and located between the torque converter and the planetary gear train.

Claims5

Dependent claims

A motor vehicle transmission comprising:

(1) a hydrodynamic torque converter including a driving impeller connected to an input shaft, a stator and and output turbine;
(2) and a planetary gear train and control system in a stationary gear housing, including:
(a) a first sun gear;
(b) a second sun gear arranged on the side of said first sun gear away from said torque converter;
(c) an inertial ring gear having a power output;
(d) a planetary gear carrier;
(e) a first planetary gear mounted on said planetary gear carrier and meshing with said first sun gear;
(f) a second planetary gear mounted on said planetary gear carrier and meshing with said first planetary gear, said second sun gear and said inertial gear;
(g) first controllable clutch means for interconnecting said first sun gear and said impeller by said output turbine;
(h) second controllable clutch means for interconnecting said second sun gear and said impeller by said output turbine;
(i) third controllable clutch means for interconnecting said planetary gear carrier and said impeller;
(j) a first freewheel arranged radially outward from said planetary gear train, connecting said planetary gear carrier and said housing;
(k) a second freewheel connecting said stator and said planetary gear carrier;
(l) a first controllable brake arranged radially outward from said gear train and selectively connecting said housing and said planetary gear carrier;
(m) and a second controllable brake arranged on the side of said gear train away from said torque converter and selectively connecting said housing and said second sun gear.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/051,904Filed 25 Jun 1979
Priority: DE 283054312 Jul 1978
Granted: 15 Sep 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16H 47/085
The mechanical gearing being of the type with members having orbital motion: with at least two mechanical connections between the hydrokinetic…
F16H 2200/2005
Characterised by the number of sets of orbital gears: with one sets of orbital gears
F16H 2200/2023
Characterised by the type of Ravigneaux set: using a Ravigneaux set with 4 connections
F16H 2200/2041
Characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes: with four engaging means