Method for increasing active duration time of an automatic freewheeling function in a vehicle
First Claim
1. Method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control comprisingduring a cruise control active periodsetting a first vehicle set speed above which the function is allowed to be activated under at least prevailing, conditions;
- establishing a first under speed value to which vehicle speed is allowed to drop below the first vehicle set speed for at least prevailing conditions;
controlling the function based on the under speed value, in order to extend active duration time of the function, wherein the magnitude of the vehicle under speed value will not be lower than that of a highest gear of a transmission in the vehicle, or a gear engaged just before the freewheel function was activated, and will be possible to reengage when the vehicle speed reaches the vehicle under speed value and the freewheel function will be inactivated and a gear will have to be engaged.
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Abstract
A method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control and during a cruise control active period is provided. The function includes an arrangement for determining a vehicle set speed for when the function is allowed to he activated and an arrangement for calculating a predetermined allowable vehicle speed drop to a first under speed value below the vehicle set speed. The function is controlled based on the under speed value, m order to extend active duration time of the function.
11 Citations
12 Claims
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1. Method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control comprising
during a cruise control active period setting a first vehicle set speed above which the function is allowed to be activated under at least prevailing, conditions; -
establishing a first under speed value to which vehicle speed is allowed to drop below the first vehicle set speed for at least prevailing conditions; controlling the function based on the under speed value, in order to extend active duration time of the function, wherein the magnitude of the vehicle under speed value will not be lower than that of a highest gear of a transmission in the vehicle, or a gear engaged just before the freewheel function was activated, and will be possible to reengage when the vehicle speed reaches the vehicle under speed value and the freewheel function will be inactivated and a gear will have to be engaged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer readable medium comprising a computer program comprising a program code for executing a method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control comprising
during a cruise control active period setting a first vehicle set speed above which the function is allowed to be activated under at least prevailing conditions; -
establishing a first under speed value to which vehicle speed is allowed to drop below the first vehicle set speed for at least prevailing conditions; controlling the function based on the under speed value, in order to extend active duration time of the function, wherein the magnitude of the vehicle under speed value will not be lower than that of a highest gear of a transmission in the vehicle, or a gear engaged just before the freewheel function was activated, and will be possible to reengage when the vehicle speed reaches the vehicle under speed value and the freewheel function will be inactivated and a gear will have to be engaged.
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11. A non-transitory computer program product comprising a program code for executing a method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control comprising
during a cruise control active period setting a first vehicle set speed above which the function is allowed to be activated under at least prevailing conditions; -
establishing a first under speed value to which vehicle speed is allowed to drop below the first vehicle set speed for at least prevailing conditions; controlling the function based on the under speed value, it order to extent active duration time of the function, wherein the magnitude of the vehicle under speed value will not be lower than that of a highest gear of a transmission in the vehicle, or a gear engaged just before the freewheel function was activated, and will be possible to reengage when the vehicle speed reaches the vehicle under speed value and the freewheel function will be inactivated and a gear will have to be engaged.
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12. A computer comprising a computer program loaded on a non-transitory memory in the computer, the computer program comprising program code for executing a method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control comprising
during a cruise control active period setting a first vehicle set speed above which the function is allowed to be activated under at least prevailing conditions; -
establishing a first under speed value to which vehicle speed is allowed to drop below the first vehicle set speed for at least prevailing conditions; controlling the function based on the under s d value in order to extend active duration time of the function, wherein the magnitude of the vehicle under speed value will not be lower than that of a highest gear of a transmission in the vehicle, or a gear engaged just before the freewheel function was activated, and will be possible to reengage when the vehicle speed reaches the vehicle under speed value and the freewheel function will be inactivated and a gear will have to be engaged.
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Specification