Method for increasing active duration time of an automatic freewheeling function in a vehicle
AssigneeVolvo Lastvagnar AB
InventorsJohan Bjernetun, Anders Eriksson
Life of this patent
Estimating the term…
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 (Vset speed) for when the function is allowed to be activated and arrangement for calculating a predetermined allowable vehicle speed drop to a first under speed value (Vunderspeed) below the vehicle set speed (Vset speed). The function is controlled based on said under speed value, in order to extend active duration time of the function.
Claims12
Method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control and during a cruise control active period, the function comprising, means for determining a first vehicle set speed (Vset speed) for when the function is allowed to be activated under at least prevailing conditions, comprising:
- calculating, a predetermined allowable vehicle speed drop (d) to a first under speed value (Vunderspeed) below the first vehicle set speed (Vset speed) for at least prevailing conditions and;
- controlling the function based on the under speed value, in order to extend active duration time of the function, wherein the controlling comprises the step of activating the function when vehicle speed has increased up to at least the first under speed value (Vunderspeed) from a vehicle speed below the under speed value (Vunderspeed) and when the function is inactive.
Dependencies are inferred from the claim text.