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US 7,416,514 B2Granted
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 Küpper, Alexander Schweizer, Dietmar Lang, Jürgen 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.
Claims5
A method for determining whether a motor vehicle transmission that is connected to an engine via a clutch that is actuated by a clutch actuator has been shifted into a neutral gear when the vehicle is at rest with a disengaged clutch, said method comprising the steps of:
- a) engaging the clutch from its disengaged position to a predetermined extent,
- b) determining engine rotational speed during engagement of the clutch,
- c) interpreting an engine rotational speed reduction as a transmission that is not in neutral and renewing disengagement of the clutch, and
- d) interpreting an absence of an engine rotational speed reduction as a transmission that is in neutral, and
- e) repeating steps a) through d) continuously and after each step d) displacing a gearshift component of the transmission by a predetermined amount until step d) has been satisfied.
2 more elements
Dependencies are inferred from the claim text.