Drive system for an automobile and method for controlling a combustion engine
First Claim
1. A drive system for an automobile, comprising:
- a combustion engine,a friction clutch configured for actuation between a disengaged and an engaged position,a multistep gearbox with an input shaft and an output shaft,a controller for controlling the combustion engine by taking into account a load lever position, a clutch position, a gear input shaft rotation speed, a gear output shaft rotation speed, an engaged gear stage, a vehicle speed and/or a vehicle acceleration, anda sensor for determining a disengaged position, an engaged position and intermediate positions of the friction clutch, wherein the sensor is connected with the controller for signal transmission, said controller being configured to adjust the rotation speed of the combustion engine when a change in the direction of clutch position change toward clutch engagement has occurred.
1 Assignment
0 Petitions
Accused Products
Abstract
A drive system for an automobile includes a combustion engine, a friction clutch, a multistep gearbox, a controller for controlling the combustion engine based on load lever position, clutch position, gear input shaft rotation speed, gear output shaft rotation speed, engaged gear stage, vehicle speed and/or vehicle acceleration, with a sensor connected with the controller determining a position of the friction clutch. A method for controlling this combustion engine includes the steps of receiving or generating with the controller information about a gear stage change, a clutch position change, a predetermined minimum vehicle speed and-or a predetermined maximum vehicle acceleration, and adjusting the rotation speed of the combustion engine in response to the received or generated information. This approach provides a particularly smooth and comfortable gear stage change.
12 Citations
19 Claims
-
1. A drive system for an automobile, comprising:
-
a combustion engine, a friction clutch configured for actuation between a disengaged and an engaged position, a multistep gearbox with an input shaft and an output shaft, a controller for controlling the combustion engine by taking into account a load lever position, a clutch position, a gear input shaft rotation speed, a gear output shaft rotation speed, an engaged gear stage, a vehicle speed and/or a vehicle acceleration, and a sensor for determining a disengaged position, an engaged position and intermediate positions of the friction clutch, wherein the sensor is connected with the controller for signal transmission, said controller being configured to adjust the rotation speed of the combustion engine when a change in the direction of clutch position change toward clutch engagement has occurred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for controlling a combustion engine of a drive system with a friction clutch, a multistep gearbox and a controller, comprising the steps of:
-
receiving or generating with the controller information about a gear stage change, a clutch position change, a predetermined minimum vehicle speed or a predetermined maximum vehicle acceleration, or a combination thereof, and initiating with the controller an adjustment of a rotation speed of the combustion engine in response to the received or generated information that a change in the direction of clutch position change toward clutch engagement has occurred. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A method for controlling a combustion engine of a drive system with a friction clutch, a multistep gearbox and a controller, comprising the steps of:
-
determining a first target rotation speed of the combustion engine, determining a first correction value for the first target rotation speed of the combustion engine, determining a second target rotation speed of the combustion engine by taking into account the first correction value and the first target rotation speed of the combustion engine, determining when at least one of the first and second target rotation speeds of the combustion engine is smaller than a predetermined maximum rotation speed of the combustion engine or when at least one of the first and second target rotation speeds of the combustion engine is greater than a predetermined minimum rotation speed of the combustion engine, determining if a magnitude of a difference between the at least one target rotation speed of the combustion engine and an actual rotation speed of the combustion engine is greater than or equal to a predetermined minimum rotation speed difference, and adjusting rotation speed of the combustion engine if the magnitude of a difference between at least one of the first and second target rotation speeds of the combustion engine and the actual rotation speed of the combustion engine is greater than or equal to a predetermined minimum rotation speed difference when the target rotation speed of the combustion engine is between the maximum and minimum rotation speeds of the engine.
-
-
19. A method for controlling a combustion engine of a drive system with a friction clutch, a multistep gearbox and a controller, comprising the steps of:
-
determining a first target rotation speed of the combustion engine, determining a first correction value for the first target rotation speed of the combustion engine, determining a second target rotation speed of the combustion engine by taking into account the first correction value and the first target rotation speed of the combustion engine, determining a third target rotation speed of the combustion engine by taking into account a second correction value and the second target rotation speed of the combustion engine, determining when the third target rotation speed of the combustion engine is smaller than a predetermined maximum rotation speed of the combustion engine or when the third target rotation speed of the combustion engine is greater than a predetermined minimum rotation speed of the combustion engine, determining if a magnitude of a difference between the third target rotation speed of the combustion engine and an actual rotation speed of the combustion engine is greater than or equal to a predetermined minimum rotation speed difference, and adjusting rotation speed of the combustion engine if the magnitude of a difference between the third target rotation speed of the combustion engine and the actual rotation speed of the combustion engine is greater than or equal to a predetermined minimum rotation speed difference when the third target rotation speed of the combustion engine is between the maximum and minimum rotation speeds of the engine.
-
Specification