System and method for the setting of an engine torque and a gearbox ratio in a vehicle with a continuously variable gearbox

• US 7,197,915 B2
• Filed: 11/07/2002
• Issued: 04/03/2007
• Est. Priority Date: 11/10/2001
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Ries-Mueller, Klaus, Luh, Joachim, Senger, Karl-Heinz, Seidel, Frank, Paeulgen, Markus
• Primary Examiner(s): Lefkowitz; Edward
• Assistant Examiner(s): JENKINS, JERMAINE L
• Application Number:
  US10/466,078
• Publication Number:
  US 20040249539A1
• Time in Patent Office: 1,608 Days
• Field of Search: 73116-120
• US Class Current: 73/115.02
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/101 Infinitely variable gearings
• CPC Class Codes: B60W 10/107 with endless flexible members
• 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 61/66 specially adapted for continuously variable gearings control of exclusively fluid gearing F16H61/38

Abstract

The invention relates to a system for inputting a motor torque and a transmission ratio in a vehicle having a continuously variable transmission (3) with means (202) for determining a desired motor torque (205) while considering a signal representing a driver command; means (203) for determining a desired transmission ratio (206) while considering a signal representing a driver command; and, means (201) for determining the signal representing the driver command. The signal, which represents the driver command, is a relative driver accelerative force command (204, 204′). The invention further relates to a method for inputting a motor torque and a transmission ratio in a vehicle.

Claims

1. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising:

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command;

several characteristic fields being provided for determining the relative driver accelerative force command; and

,

the characteristic fields being usable in dependence upon a selection lever position.

2. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising:

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command;

several computation methods being provided for determining the relative driver accelerative force command; and

,

the computation methods being usable in dependence upon a selection lever position.

3. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising:

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command; and

,

the transmission ratio being maintained when switching over from an automatic operation into a manual operation.

4. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising:

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command; and

,

in a manual operation when reaching an rpm threshold, the desired transmission ratio being changed continuously so that an rpm limit is not exceeded or there is no drop therebelow.

5. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising;

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command; and

,

in manual operation, a gear information being adapted to the instantaneously selected transmission ratio.

6. A system for inputting a motor torque and a transmission ratio in a vehicle having a continuously adjustable transmission, the system comprising;

means for determining a signal representing a relative driver accelerative force command;

means for determining a desired motor torque while considering said signal representing said relative driver accelerative force command;

means for determining a desired transmission ratio in dependence upon said signal representing said relative driver accelerative force command; and

,

the determination of the desired transmission ratio including at least an administrator object and several supplier objects in the sense of an object-orientated structure.

7. The system of claim 6, wherein the administrator object interrogates the supplier objects as to whether they want to supply information for determining the desired transmission ratio.

8. The system of claim 6, wherein the interrogation of the supplier objects takes place in a prioritized manner.

9. The system of claim 6, wherein the supplier objects can supply a desired rpm and/or a desired transmission ratio.

10. A method for inputting a motor torque and a transmission ratio in a vehicle having a continuously variable transmission, the method comprising the steps of;

determining a signal representing the relative driver accelerative force command;

determining a desired motor torque while considering the signal representing the relative driver accelerative force command;

determining a desired transmission ratio in dependence upon the signal representing the relative driver accelerative force command;

several characteristic fields being provided for determining the relative driver accelerative force command; and

,

the characteristic fields being used in dependence upon a selection lever position.

11. A method for inputting a motor torque and a transmission ratio in a vehicle having a continuously variable transmission, the method comprising the steps of;

determining a signal representing the relative driver accelerative force command;

determining a desired motor torque while considering the signal representing the relative driver accelerative force command;

determining a desired transmission ratio in dependence upon the signal representing the relative driver accelerative force command;

several computation methods being provided for determining the relative driver accelerative force command; and

,

the computation methods being used in dependence upon a selection lever position.