Method and system for controlling at least one actuator in the drive train of a motor vehicle
AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG
InventorsHeiko Dell, Klaus Kupper, Alexander Schwerzer, Dietmar Lang, Jurgen Benz, Reinhard Berger
Life of this patent
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Abstract
The invention relates to a method and device for securely and comfortably operating a drive train of a motor vehicle, especially for operating a drive train with several clutches.
Claims25
Method for referencing a component that can be moved by an actuator in a motor vehicle, wherein the movement of the component relative to a reference position is recorded, wherein, in said method, the component is moved by the actuator in its reference position when an actuating component of the vehicle is actuated, which is activated during normal operation prior to any activity by the actuator.
Method for determining whether the transmission, which is connected to a vehicle engine via a clutch that is actuated by an actuator, of a vehicle at rest with disengaged clutch has been shifted into the neutral gear, wherein, in said method,
- a) the clutch is closed from its open position to a predetermined extent,
- b) during engagement of the clutch the speed of the motor is determined,
- c) a speed reduction is interpreted as a transmission that is not in neutral and leads to a renewed disengagement of the clutch, or
- d) the absence of a speed reduction is interpreted as a transmission that is in neutral.
Method for engaging the clutches of a twin-clutch transmission arranged between an engine and driven wheels of a motor vehicle, wherein the engine stands still, comprising the following steps:
- e) slowly engage one clutch,
- f) record the gear input speed or the engine speed during the slow engagement of the clutch, and
- g) break off the continued engaging of the clutch when the detected speed exceeds a predetermined value.
Method for controlling the actuating ability of a selector lever of an automatic transmission, wherein, in said method, the selector lever can be moved out of a predetermined shift position or into a predetermined shift position only when the transmission has been shifted out the shifting state that corresponds to the predetermined shift position or has been shifted into the shifting state that corresponds to the predetermined shift position.
Method for shifting a twin-clutch transmission into the “P” position, wherein, in said method, after a command to shift the transmission into the “P” position a referencing operation of at least one gear actuator that engages a parking mechanism is performed and the transmission is shifted into the “P” position only after the referencing operation has occurred.
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition on, engine on and vehicle at rest”:
- Vehicle Status:
- Ignition on
- Engine on
- Vehicle at rest
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- 1
- 1/N
- N
- 1 P active
- Transmission 2
- 2
- R
- N
- 2 P active
- Clutch 1
- Disengaged
- Disengaged
- Disengaged
- Disengaged
- Clutch 2
- Disengaged
- Disengaged
- Disengaged
- Disengaged
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition off, engine off and vehicle at rest”:
- Vehicle Status:
- Ignition off
- Engine off
- Vehicle at rest
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- N
- N
- N
- N P active
- Transmission 2
- N
- N
- N
- N P active
- Clutch 1
- Engaged
- Engaged
- Engaged
- Engaged
- Clutch 2
- Engaged
- Engaged
- Engaged
- Engaged
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition on, engine off and vehicle at rest”:
- Vehicle Status:
- Ignition on
- Engine off
- Vehicle at rest
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- N
- N
- N
- N P active
- Transmission 2
- N
- N
- N
- N P active
- Clutch 1
- Disengaged
- Disengaged
- Disengaged
- Disengaged
- Clutch 2
- Disengaged
- Disengaged
- Disengaged
- Disengaged
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition on, engine off and vehicle in motion”:
- Vehicle Status:
- Ignition on
- Engine off
- Vehicle in motion
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- 1/3//5/7 or N
- N
- N
- N ignore P
- Transmission 2
- 2/4/6 or N
- R
- N
- N ignore P
- Clutch 1
- Undetermined
- Undetermined
- Disengaged
- Disengaged
- Clutch 2
- Undetermined
- Undetermined
- Disengaged
- Disengaged
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition off, engine off and vehicle in motion”:
- Vehicle Status:
- Ignition off
- Engine off
- Vehicle in motion
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- N
- N
- N
- N ignore P
- Transmission 2
- N
- N
- N
- N ignore P
- Clutch 1
- Engaged
- Engaged
- Engaged
- Engaged
- Clutch 2
- Engaged
- Engaged
- Engaged
- Engaged
Method for controlling the operation of a twin-clutch transmission of a motor vehicle, wherein, in said method, the clutches and gearboxes of the twin-clutch transmission are shifted into conditions corresponding to the following pattern for the vehicle status “ignition on, engine on and vehicle in motion”:
- Vehicle Status:
- Ignition on
- Engine on
- Vehicle in motion
- Selector Lever
- D
- R
- N
- P
- Transmission 1
- 1/3//5/7/N
- 1/N
- N
- Ignore
- Transmission 2
- 2/4/6/N
- R
- N
- Ignore
- Clutch 1
- Controlled
- Controlled
- Disengaged
- Disengaged
- Clutch 2
- Controlled
- Controlled
- Disengaged
- Disengaged
Method for controlling the operation of a twin-clutch transmission, comprising the following steps:
- shift the non-coupled transmission into a pre-selection gear according to a program comprising the gear of the coupled transmission and at least one additional operating parameter of the vehicle drive train,
- verify whether the pre-selection gear dependent upon the program is in fact engaged during the subsequent shifting of the twin-clutch transmission into another gear,
- determine a success factor that corresponds to the ratio between the number in which the pre-selection gear is actually shifted and the number of subsequent shifts, and
- change the program when the ratio is below a predetermined value.
Method for determining whether the transmission, which is connected to a vehicle engine via a clutch that is actuated by an actuator, of a vehicle at rest with disengaged clutch has been shifted into the neutral gear, wherein, in said method, a component in a vehicle that is moved by an actuator is subjected to a referencing operation, with the movement of the component relative to the reference position being recorded, wherein, in said method, the component is moved by the actuator into its reference position when an actuating part of the vehicle is actuated, which is actuated during normal operation prior to activity by the actuator, comprising the following steps:
- h) the clutch is closed from its open position to a predetermined extent,
- i) during engagement of the clutch the speed of the motor is determined,
- j) a speed reduction is interpreted as a transmission that is not in neutral and leads to a renewed disengagement of the clutch, or
- k) the absence of a speed reduction is interpreted as a transmission that is in neutral.
Dependencies are inferred from the claim text.