# US 6,719,655 B2 · Electrodynamic drive system

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- Number: US 6,719,655 B2
- Document ID: US6719655B2
- Status: Granted
- Kind: B2
- Application number: 10/278,124
- Filed: 2002-10-21
- Published: 2003-04-24
- Granted: 2004-04-13
- Earliest claimed: 2001-10-24
- Assignees: ZF Friedrichshafen AG
- Inventors: Jens Kramer
- Web page: https://patentgrep.com/patent/US6719655B2

## CPC

- B60W 20/30: Control strategies involving selection of transmission gear ratio {(control of change speed gearings, together with other vehicle sub-units B60W10/10; HEV transmission gearing B60K6/36; gearings and control thereof F16H)}
- B60K 6/365: with the gears having orbital motion
- B60K 6/48: Parallel type
- B60K 6/547: the transmission being a stepped gearing
- B60W 10/02: including control of driveline clutches
- F16H 3/725: {with means to change ratio in the mechanical gearing}
- B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)}
- F16H 3/0915: {with coaxial input and output shafts}
- F16H 3/54: one of the central gears being internally toothed and the other externally toothed
- F16H 2200/0052: the gear ratios comprising six forward speeds
- Y02T 10/62: Hybrid vehicles
- Y10S 903/906: Motor or generator
- Y10S 903/91: Orbital, e.g. planetary gears
- Y10S 903/914: Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means
- Y10S 903/919: Stepped shift
- Y10S 903/946: Characterized by control of driveline clutch
- Y10S 903/951: Assembly or relative location of components
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F16H: GEARING
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An electrodynamic drive system (2) for a vehicle between a drive engine (4) and a manual transmission (16) comprising a planetary transmission (12) with the three elements sun gear (50), internal gear (10) and planet carrier (32), of which a first element (32) is connected to the manual transmission (16), a second element (10) is connected to the drive engine (4), and a third element (50) is connected to at least one electrical engine (22). A clutch (40) is provided with a first shift position, in which a rigid connection exists between the planet carrier (32) and the sun gear (50) for bridging the planetary transmission (12), and a second shift position in which the connection between the planet carrier (32) and the sun gear (50) is interrupted. The clutch (40) is provided with a third shift position, in which a rigid connection exists between the sun gear (50) and a stationary component of the housing (14), whereby a reduction in the speed of the drive engine (4) that corresponds to the transmission ratio of the planetary transmission (12) is achieved.

## Claims

### Claim 1

An electrodynamic drive system (2), for a vehicle, comprising a drive engine (4), a manual transmission (16), with a planetary transmission (12) therebetween, the planetary transmission having a sun gear (50), an annulus (10) and a planet carrier (32), of which the carrier (32) is connected to the manual transmission (16), the annulus (10) is connected to the drive engine (4), and the sun gear (50) is connected to at least one electrical motor (22); a clutch (40) having a first shift position in which a rigid connection exists between the planet carrier (32) and the sun gear (50) for bridging the planetary transmission (12), and a second shift position, in which the connection between the planet carrier (32) and the sun gear (50) is interrupted; a third shift position in which a rigid connection exists between the sun gear (50) and a stationary component of the housing (14); and a control mechanism for the clutch.

### Claim 2 (depends on 1)

The electrodynamic drive system according to claim 1, wherein the sun gear (50) is connected to a contact-free retarding braking system (56).

### Claim 3 (depends on 2)

The electrodynamic drive system according to claim 2, wherein the contact-free retarding braking system is an eddy brake (56).

### Claim 4 (depends on 2)

The electrodynamic drive system according to claim 2, wherein the contact-free retarding braking system is a hydrodynamic retarder.

### Claim 5 (depends on 1)

The electrodynamic drive system (2) according to claim 1, wherein the clutch (40) is a dual-action synchronizer (38, 46, 58, 64) having a neutral position.

### Claim 6 (depends on 1)

The electrodynamic drive system (2) according to claim 1, wherein the clutch (40) is a dual-action dog clutch (38, 46, 58, 64) having a neutral position.

### Claim 7 (depends on 1)

The electrodynamic drive system (2) according to claim 1, wherein the clutch (40) is a double-sided multi-plate clutch having a neutral position.

### Claim 8

A method for dividing gear ratios in a manual transmission of a vehicle that is equipped with an electrodynamic drive system (2) between a drive engine (4) and the manual transmission (16), having a planetary transmission (12), including a sun gear (50), an annulus (10), and a planet carrier (32), the carrier (32) being connected to the manual transmission (16), the annulus (10) being connected to the drive engine (4), and the sun gear (50) being connected to an electrical motor (22); a clutch (40) that is shifted from a neutral position to a first gear position in order to form a rigid direct connection between the planet carrier (32) and the sun gear (50) for the purpose of bridging the planetary transmission (12), wherein the clutch (40) is shifted from the neutral position into a second gear position, whereby a reduction in the speed of the drive engine (4) corresponding to the transmission ratio of the planetary transmission (12) is achieved.