Power train with automated transmission

• US 6,213,911 B1
• Filed: 10/10/1997
• Issued: 04/10/2001
• Est. Priority Date: 10/12/1996
• Status: Expired due to Fees

• Current Assignee: Luk Getriebe-Systeme GmbH (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Luk Getriebe-Systeme GmbH (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Zimmermann, Martin, Stinus, Jochen, Salecker, Michael
• Primary Examiner(s): Marmor, Charles A
• Assistant Examiner(s): HO, HA DINH
• Application Number:
  US08/949,101
• Time in Patent Office: 1,278 Days
• Field of Search: 477/97, 477/166, 477/174, 743/35, 701/53, 701/65
• US Class Current: 477/97
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 2540/06 Ignition switch
• CPC Class Codes: B60W 30/18 Propelling the vehicle
• CPC Class Codes: B60W 30/1819 Propulsion control with control means using analogue circuits, relays or mechanical links
• CPC Class Codes: F16H 2059/746 Engine running state, e.g. on-off of ignition switch
• CPC Class Codes: F16H 59/50 Inputs being a function of the status of the machine, e.g. position of doors or safety belts
• CPC Class Codes: F16H 59/54 dependent on signals from the brakes, e.g. parking brakes

Abstract

An electronic control unit for an automated transmission and/or an automated clutch in the power train of a motor vehicle is connected with one or more sensors denoting one or more activities by the operator of the vehicle. The control unit can become operative in response to a signal denoting the actuation of a brake and/or in response to a signal denoting that the ignition system of the vehicle has been operated to start the engine.

Claims

1. A motor vehicle comprising a power train including a prime mover, an automatically actuatable transmission and a torque transmitting system;

at least one control unit switchable between an operative condition where the at least one control unit is in an on state and an inoperative condition where the at least one control unit is in an off state;

actuating means between said at least one control unit and said transmission to actuate said transmission in the operative condition of said at least one control unit;

a starting device for said prime mover, said device having activated and idle conditions and being operative to change a prevailing condition of said at least one control unit in response to a change between said activated and idle conditions; and

means for monitoring activities of an operator of the vehicle and for transmitting to said at least one control unit signals effecting a change from the inoperative to the operative condition of said at least one control unit in response to detection of actuation of a brake by the operator.

2. The vehicle of claim 1, wherein said torque transmitting system includes a friction clutch connecting an output element of said prime mover with an input element of said transmission.

3. The vehicle of claim 1, wherein said monitoring means includes a first sensor arranged to transmit said signals and at least one additional sensor.

4. The vehicle of claim 1, wherein said prime mover includes a combustion engine and said starting device includes an ignition system for said engine.

5. The vehicle of claim 1, wherein said torque transmitting system is an automatically actuatable system and further comprising an additional control unit and second actuating means interposed between said additional control unit and said automatically actuatable system to actuate said automatically actuatable system.

6. The vehicle of claim 5, wherein said additional control unit is arranged to actuate said automatically actuatable system by way or said second actuating means in response to signals from said at least one control unit.

7. The vehicle of claim 1, wherein said actuating means is arranged to actuate said transmission in response to the change from the inoperative to the operative condition of said at least one control unit.

8. The vehicle of claim 1, wherein said at least one control unit is arranged to remain in said operative condition for a predetermined interval of time following the change from said inoperative condition in response to transmission of a signal by said monitoring means.

9. The vehicle of claim 1 wherein, in the idle condition of said starting device, said at least one control unit is arranged to remain in said operative condition for a duration of signal transmission by said monitoring means.

10. The vehicle of claim 1, wherein said transmission is manually shiftable into a plurality of gears and a signal which effects the change from the inoperative to the operative condition of said at least one control unit is indicative of manual shifting of said transmission into one of said plurality of gears by the operator of the vehicle.

11. The vehicle of claim 1, wherein said transmission is shiftable into any one of a plurality of gears and a signal which effects the change from the inoperative to the operative condition of said at least one control unit is indicative of the shifted into gear of said transmission.

12. The vehicle of claim 1, wherein said transmission is shiftable into a plurality of gears and said torque transmitting system is an automatically disengageable system, and further comprising additional actuating means for said torque transmitting system, said at least one control unit including means for disengaging said torque transmitting system via said additional actuating means in response to a signal denoting an intention by the operator to shift said transmission.

13. The vehicle of claim 1, wherein said monitoring means includes at least one sensor which is effective to generate signals in the inoperative condition of said at least one control unit.

14. The vehicle of claim 1, wherein said monitoring means includes at least one sensor arranged to transmit signals for a duration of activity of the operator and said at least one control unit remains operative only during transmission of signals by said at least one sensor.

15. The vehicle of claim 1, wherein said monitoring means includes at least one sensor arranged to transmit signals for a duration of activity of the operator and said at least one control unit remains operative during and for intervals following transmission of signals by said at least one sensor.

16. The vehicle of claim 15, wherein said intervals take up predetermined periods of time.

17. The vehicle of claim 1, wherein said monitoring means includes at least one analog sensor.

18. The vehicle of claim 1, wherein said monitoring means includes at least one digital sensor.

19. The vehicle of claim 1, wherein said monitoring means includes at least one switch.

20. The vehicle of claim 1, wherein said monitoring means includes means for generating signals denoting at least one of (a) a condition of a parking brake, (b) a position of a brake pedal, (c) actuation of a door switch, (d) a position of a hood, (e) a position of a trunk cover, (f) a condition of an alarm system, (g) a condition of a seat switch, (h) a position of a gas pedal, (i) a position of a light control switch, (j) a condition of a headlamp flasher, (k) a condition of a horn, (l) a condition of a radio receiver, (m) a position of a gear ratio selecting element for the transmission, and (n) a position or condition of another adjustable constituent of the vehicle.

21. A motor vehicle comprising a power train including a prime mover, an automatically actuatable transmission, a starting device activatable to start the prime mover and an automatically actuatable torque transmitting system;

at least one control unit switchable between an operative condition where the at least one control unit is in an on state and an inoperative condition where the at least one control unit is in an off state;

first actuating means operating between said at least one control unit and said transmission to actuate said transmission in the operative condition of said at least one control unit;

second actuating means operating between said at least one control unit and said torque transmitting system to actuate said system in the operative condition of said at least one control unit; and

means for monitoring activities of an operator of the vehicle including a first sensor arranged to transmit to said at least one control unit first signals effecting a change from the inoperative to the operative condition of said at least one control unit in response to detection of at least one first activity of the operator including an actuation of a brake, and a second sensor arranged to transmit to said at least one control unit second signals effecting said change from the inoperative to the operative condition of said at least one control unit in response to detection of at least one second activity other than actuation of said brake.

22. The vehicle of claim 21, wherein said torque transmitting system includes an engageable and disengageable friction clutch, said at least one second activity involving a change of a condition of said starting device for said prime mover, said device having activated and idle conditions.

23. The vehicle of claim 22, wherein said prime mover includes a combustion engine and said starting device includes an ignition system for said engine.

24. The vehicle of claim 21, wherein said first actuating means is arranged to actuate said transmission in response to the change from the inoperative to the operative condition of said at least one control unit.

25. The vehicle of claim 24, wherein said at least one control unit is arranged to remain in said operative condition for a predetermined interval of time following the change from said inoperative condition in response to transmission of a signal by said monitoring means.

26. The vehicle of claim 21, wherein said at least one second activity involves a change of a condition of said starting device for said prime mover, said starting device having activated and idle conditions and, in the idle condition of said starting device, said at least one control unit is arranged to remain in said operative condition for a duration of signal transmission by said monitoring means.

27. The vehicle of claim 21, wherein said transmission is manually shiftable into a plurality of gears and a signal which effects the change from the inoperative to the operative condition of said at least one control unit is indicative of manual shifting of said transmission into one of said plurality of gears by the operator of the vehicle.

28. The vehicle of claim 21, wherein said transmission is shiftable into any one of a plurality of gears and a signal which effects the change from the inoperative to the operative condition of said at least one control unit is indicative of the shifted into gear of said transmission.

29. The vehicle of claim 21, wherein said transmission is shiftable into a plurality of gears and said torque transmitting system is an automatically disengageable system, said at least one control unit including means for disengaging said torque transmitting system via said second actuating means in response to a signal denoting an intention by the operator to shift said transmission.

30. The vehicle of claim 21, wherein at least one of said sensors is effective to generate signals in the inoperative condition of said at least one control unit.

31. The vehicle of claim 21, wherein at least one of said sensors is arranged to transmit signals for a duration of activity of the operator and said at least one control unit remains operative only during transmission of signals by said at least one sensor.

32. The vehicle of claim 22, wherein at least one of said sensors is arranged to transmit signals for a duration of activity of the operator and said at least one control unit remains operative during and for intervals following transmission of signals by said at least one sensor.

33. The vehicle of claim 32, wherein said intervals take up pretermined periods of time.

34. The vehicle of claim 21, wherein said monitoring means includes at least one analog sensor.

35. The vehicle of claim 21, wherein said monitoring means includes at least one digital sensor.

36. The vehicle of claim 22, wherein at least one of said sensors includes at least one switch.

37. The vehicle of claim 21, wherein said monitoring means includes sensors for generating signals denoting at least one of (a) a condition of a parking brake, (b) a position of a brake pedal, (c) actuation of a door switch, (d) a position of a hood, (e) a position of a trunk cover, (f) a condition of an alarm system, (e) a condition of a seat switch, (h) a position of a gas pedal, (i) a position of a light control switch, (j) a condition of a headlamp flasher, (k) a condition of a horn, (l) a condition of a radio receiver, (m) a position of a gear ratio selecting element for the transmission, and (n) a position or condition of another adjustable constituent of the vehicle.

38. A method of actuating at least one of an automatically actuatable torque transmitting system and an automatically actuatable transmission system in a power train of a motor vehicle by way of at least one control unit which is switchable between an operative condition where the at least one control unit is in an on state and an inoperative condition where the at least one control unit is in an off state, which is connected with at least one of the systems by at least one actuating means, and which receives signals from sensors arranged to monitor various activities of an operator of the vehicle, comprising the steps of switching the at least one control unit from the inoperative to the operative condition in response to a sensor signal denoting a starting by the operator of a prime mover of the vehicle;

and switching the at least one control unit from the inoperative to the operative condition in response to a sensor signal denoting an activity of the operator other than starting of the prime mover.

39. The method of claim 38, wherein said other activity involves the actuation of a brake in the motor vehicle.