摘要:
A method for determination of a braking location for regenerative braking of a vehicle (1) to a known stop location. The regenerative braking is effected with a braking force which comprises a regenerative force component Fe imparted by a regenerative brake system (30) of the vehicle. The method comprises the steps of: i) determining a distance between a momentary location and the stop location, ii) determining a braking distance for said regenerative braking on the basis of the momentary speed and Fe ,iii) determining whether the distance between the momentary location of the vehicle and the stop location is within said braking distance, and iv) generating a signal that said braking location has been reached if the distance between the momentary location of the vehicle and the stop location is within said braking distance, otherwise the above method steps are repeated.
摘要:
Energy control system for a hybrid vehicle with at least one electrical machine and a combustion engine and at least one chargeable energy store, which system comprises a control unit and a charge level meter which is adapted to measuring the charge level of the energy store. The control unit comprises a calculation unit adapted to calculating at a time t0, inter alia on the basis of the vehicles current speed and weight, a time t1 which denotes the beginning of a retardation phase during which the vehicle is braked in order to halt at a predetermined location P, and the control unit is adapted to controlling the offtake of energy from the energy store during the period from t0 to t1 so that the charge level of the energy store at time t1 is below a predetermined low level QL.
摘要:
A method and a system to control an auxiliary brake system in a vehicle 100, comprising a service brake system. 150 and auxiliary brake system 160, are presented. The vehicle also comprises a system for prevention of wheel lock when braking, which may deactivate a braking action provided by an auxiliary brake system 160 and may actively control a braking action provided by the service brake system 150, The system according to the present invention is arranged to determine whether the vehicle 100 is in a driving mode for which it is acceptable in terms of safety and/or drivability to block the deactivation of the braking action for the auxiliary brake system 160, If a first manual control 170, set up solely for the activation of braking action for the auxiliary brake system 160, is activated, this is here interpreted to mean that it is acceptable, from, a safety and/or drivability point of view for the driving mode in question, to block the deactivation. The system is also arranged to block the deactivation for the auxiliary brake system 160 if the determination snows that it is acceptable in terms of safety and drivability to block, the deactivation of this braking action.
摘要:
The present invention relates to an arrangement and a method for controlling the activation of an auxiliary brake of a vehicle. The arrangement comprises the auxiliary brake (5), a cooling system (1) with a circulating cooling medium adapted to cooling the auxiliary brake (5), a temperature sensor (8) adapted to detecting the temperature (Tout) of the cooling medium after the latter has cooled the auxiliary brake (5), and a control unit (7) adapted to comparing temperature values (Tout) received from the temperature sensor (8) with a reference temperature (Tref). The control unit (7) is adapted to controlling the activation of the auxiliary brake (5) with a reduced braking effect when temperature values (Tout) received exceed a reference temperature (Tref) which varies with time during at least one period of time (t1-t5) of the activation time of the auxiliary brake (5).
摘要:
A method and a system to control an auxiliary brake system in a vehicle 100 having a service brake system 150 and an auxiliary brake system 160. Also a system for prevention of wheel lock when braking, which may deactivate a braking action provided by the auxiliary brake system 160 and may actively control a braking action provided by the service brake system 150. The system determines whether the vehicle 100 is in a driving mode for which it is acceptable in terms of safety and/or drivability to block the deactivation of the braking action for the auxiliary brake system 160. If a first manual control 170, which is set up solely for activating braking action for the auxiliary brake system 160, is activated, this means it is acceptable, from a safety and/or drivability point of view, for the driving mode in question, to block the deactivation. Also arranging block deactivation for the auxiliary brake system 160 if it is acceptable in terms of safety and drivability to block it.
摘要:
The invention relates to a method for controlling retarder operation of a motor vehicle (100, 110), comprising the steps of: - continuously detecting temperatures (T) of the retarder's fluid (graph a); - continuously determining a change in the detected temperature; and - automatically disconnecting the operation of the retarder when said detected temperature exceeds a predetermined temperature. Said predetermined temperature (graph b) is determined continuously on the basis of the magnitude of the change per unit time. The invention relates also to a computer programme product comprising programme code for a computer for implementing a method according to the invention. The invention relates also to a device and a motor vehicle equipped with the device.
摘要:
A system for controlling braking of a motor vehicle during downhill driving, in which the vehicle is provided with a service frictional braking device (18) and an auxiliary braking device (25), comprising a retarder brake (26) and a lever (40) for activating the retarder brake by the driver of the vehicle, comprises means (29) adapted to, upon activation of said retarder brake (26) by actuating said lever (40) by the driver for applying a braking action to the vehicle when driving downhill, based upon values of parameters of the driving conditions of the vehicle, calculate whether the auxiliary braking device is able to alone obtain said braking action to be applied to the vehicle. The braking control means (28) is adapted to activate the service frictional braking device to assist said auxiliary braking device when said calculation states that the auxiliary braking device is not able to alone obtain said braking action to be applied to the vehicle. (Fig 1).