METHOD, DEVICE AND USE THEREOF FOR OPERATING A MOTOR VEHICLE

• US 20050090370A1
• Filed: 10/08/2004
• Published: 04/28/2005
• Est. Priority Date: 04/10/2002
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Schneider, Georg, Kupper, Klaus, Berger, Reinhard
• Granted Patent: US 7,160,225 B2
• Time in Patent Office: Days
• US Class Current: 477/167
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2050/0031 Mathematical model of the vehicle
• CPC Class Codes: B60W 2710/027 Clutch torque
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: B60W 30/18027 Drive off, accelerating from standstill
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• CPC Class Codes: F02N 11/04 the motors being associated with current generators
• CPC Class Codes: F02N 11/0822 related to action of the driver
• CPC Class Codes: F02N 11/0851 characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
• CPC Class Codes: F02N 2200/0802 Transmission state, e.g. gear ratio or neutral state
• CPC Class Codes: F16D 13/385 double clutches, i.e. comprising two friction disc mounted on one driven shaft with two concentric driven shafts F16D21/06
• CPC Class Codes: F16D 13/583 Diaphragm-springs, e.g. Belleville co-operation with a disengaging thrust ring or bearing F16D23/14
• CPC Class Codes: F16D 13/585 Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate
• CPC Class Codes: F16D 13/71 in which the clutching pressure is produced by springs only
• CPC Class Codes: F16D 13/757 : the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate
• CPC Class Codes: F16D 2023/123 : Clutch actuation by cams, ramps or ball-screw mechanisms
• CPC Class Codes: F16D 23/12 : Mechanical clutch-actuating mechanisms arranged outside the clutch as such specific for combined clutches F16D21/00; mechanisms specific for synchronisation F16D23/02
• CPC Class Codes: F16D 25/083 : Actuators therefor F16D25/085 - F16D25/087 take precedence
• CPC Class Codes: F16D 25/10 : Clutch systems with a plurality of fluid-actuated clutches arrangements or mounting of clutches in vehicles B60K17/00
• CPC Class Codes: F16D 25/12 : Details not specific to one of the before-mentioned types
• CPC Class Codes: F16D 25/126 : adjustment for wear or play
• CPC Class Codes: F16D 2500/1024 : combined with hydraulic actuation
• CPC Class Codes: F16D 2500/10412 : Transmission line of a vehicle
• CPC Class Codes: F16D 2500/30406 : Clutch slip
• CPC Class Codes: F16D 2500/3067 : Speed of the engine
• CPC Class Codes: F16D 2500/3069 : Engine ignition switch
• CPC Class Codes: F16D 2500/30806 : Engaged transmission ratio
• CPC Class Codes: F16D 2500/3101 : Detection of a brake actuation by a sensor on the brake
• CPC Class Codes: F16D 2500/3109 : Vehicle acceleration
• CPC Class Codes: F16D 2500/31453 : Accelerator pedal position threshold, e.g. switch
• CPC Class Codes: F16D 2500/31466 : Gear lever
• CPC Class Codes: F16D 2500/31486 : Recognition of user style of driving, e.g. sportive, calm, nervous
• CPC Class Codes: F16D 2500/31493 : Switches on the dashboard
• CPC Class Codes: F16D 2500/3166 : Detection of an elapsed period of time
• CPC Class Codes: F16D 2500/7041 : Position
• CPC Class Codes: F16D 27/00 : Magnetically- or electrically- actuated clutches; Control or electric circuits therefor clutches with magnetisable particles F16D37/02; with electro-rheological fluids F16D37/008
• CPC Class Codes: F16D 27/004 : with permanent magnets combined with electromagnets
• CPC Class Codes: F16D 28/00 : Electrically-actuated clutches arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00
• CPC Class Codes: F16D 29/005 : with a fluid pressure piston driven by an electric motor
• CPC Class Codes: F16D 48/04 : providing power assistance
• CPC Class Codes: F16D 48/06 : Control by electric or electronic means, e.g. of fluid pressure
• CPC Class Codes: F16D 48/062 : of a clutch system with a plurality of fluid actuated clutches
• CPC Class Codes: F16D 48/066 : Control of fluid pressure, e.g. using an accumulator F16D48/062, F16D48/068 take precedence
• CPC Class Codes: F16F 15/14 : using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers compensation of inertia forces F16F15/22; weights for balancing rotating bodies F16F15/32
• CPC Class Codes: F16H 57/04 : Features relating to lubrication or cooling or heatingin hydrokinetic gearing F16H41/30; control of lubrication or cooling in hydrostatic gearing F16H61/4165
• CPC Class Codes: Y02T 10/40 : Engine management systems
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility

Abstract

An apparatus and method of use thereof for operating a motor vehicle. The apparatus comprises a starter generator between two clutches on the crankshaft. The starter generator is activated in order to start the internal combustion engine at the moment when the transmission-side clutch passes into the slipping/sliding state.

Claims

1. In a motor vehicle having a crankshaft starter generator operatively arranged between an engine clutch and a gearbox clutch of a crankshaft, a drive unit, a clutch gearbox, and a power takeoff shaft, a method for operation of said motor vehicle comprising the step of operating the starter generator between the two clutches to turn on the drive unit at a moment in time when the gearbox clutch changes into a slipping state and said power takeoff shaft is disconnected from the drive unit.

2. The method recited in claim 1 wherein the drive unit is an internal combustion unit.

3. The method according to claim 2, wherein the starter generator is operated to start the combustion engine during an electrical start at a moment when a kickdown switch is operated for a certain period of time.

4. The method according to claim 2, wherein the starter generator for starting the combustion engine is operated during an electrical start at a moment when a gas pedal exceeds a defined position or when it is operated beyond a defined span of time.

5. The method according to claim 2, wherein the starter generator is operated to start the combustion engine when a measured vehicle acceleration does not correspond to a defined required vehicle acceleration.

6. The method according to claim 1, wherein starting with an electrical start of the vehicle, the gearbox clutch, located between the gearbox and the starter generator, is operated in a slipping manner until such time as the gearbox clutch operates without slip.

7. The method according to claim 2, wherein turning on the engine clutch, arranged between the starter generator and the combustion engine, is subject to a logic control depending on fuel consumption.

8. The method according to claim 2, wherein turning on the engine clutch, arranged between the starter generator and the combustion engine, is subject to a logic control depending on a selected driving mode.

9. The method according to claim 1, wherein as the vehicle is started, and as torque of the starter generator is either retained or changed, simultaneously, a friction torque is built up on the engine clutch via a travel or torque control.

10. The method according to claim 2, wherein prior to a time when a number of revolutions of the combustion engine and a number of revolutions the starter generator are equal, a transmissible torque of the gearbox clutch is again reduced down to a slippage state.

11. The method according to claim 2, wherein a defined revolution number threshold of the combustion engine is exceeded.

12. The method according to claim 1, wherein a defined slippage revolution number threshold value is exceeded.

13. The method according to claim 2, wherein a gradient of the engine or slippage revolution number exceeds a boundary value.

14. The method according to claim 2, wherein a value, determined for starting up the combustion engine is deposited from a control in a volatile memory.

15. The method according to claim 2, wherein for a period of starting up the combustion engine, a temperature factor is deposited in a memory of a control device.

16. The method according to claim 1, wherein a program part is deposited in a control, which on the basis of defined starting parameters, calculates a particular necessary required clutch moment.

17. The method according to claim 16, wherein the program part preferably comprises several modules and is either located in a control unit or is subdivided over several control units that communicate with each other.

18. The method according to claim 16, wherein the program part with its associated functions are present in the entire system.

19. The method according to claim 1, wherein controls of the drive unit, the gearbox as well as at least one clutch are supplied with data by one coordinator.

20. The method according to claim 1, wherein a gearbox input revolution number is acquired by means of a sensor attached to the gearbox.

21. The method according to claim 2, wherein differences between a number of revolutions of the starter generator and a number of revolutions the combustion engine, data from a wheel sensor, as well as temperatures of the engine and gearbox clutches are acquired and are processed in a gearbox control.

22. An apparatus for operating a motor vehicle comprising:

a drive unit;

an engine clutch;

a gearbox clutch;

a crankshaft;

a clutch gearbox;

a power take-off shaft; and

,

a crankshaft starter generator operatively arranged between said engine clutch and said gearbox clutch and arranged to turn on said drive unit at a moment in time when a gearbox clutch changes to a slipping state and said power take-off shaft is disconnected from said drive unit.

23. The apparatus for operating a motor vehicle described in claim 22, wherein said drive unit is an internal combustion engine.

24. The apparatus for operating a motor vehicle described in claim 22, wherein said drive unit is a motor.