公开(公告)号：US20230127657A1

公开(公告)日：2023-04-27

申请号：US17912386

申请日：2021-03-12

Applicant: Scania CV AB

Inventor： Anders BJÖRKMAN ,  Richard BOSTRÖM ,  Frank MOHR ,  Marcus ENGMAN ,  Afram KOURIE

IPC: B60W30/188 ,  F16H61/02 ,  F16H59/44 ,  F16H59/66 ,  B60W10/184 ,  B60W10/10 ,  B60W10/02 ,  B60W30/18 ,  B60W30/19

Abstract: A method in a control arrangement of a vehicle and a control arrangement for a vehicle for downshifting gears in an uphill slope are presented. The method comprises, when the vehicle is travelling in an uphill slope using an initial gear of the vehicle's automated manual transmission gearbox: simulating at least one speed profile for a downshift to, and a usage of, at least one gear; determining that a minimal speed of each one of the at least one simulated speed profile has a value indicating that the actual speed of the vehicle will be less than or equal to zero in the uphill slope; opening a clutch before is reduced to a value less than zero; activating at least one vehicle brake; shifting vehicle's automated manual transmission gearbox to a start gear; closing the clutch; and deactivating the at least one vehicle brake.

公开(公告)号：US20210237728A1

公开(公告)日：2021-08-05

申请号：US17048646

申请日：2019-04-17

Applicant: Scania CV AB

Inventor： Christian WESSEL ,  Andreas SZILASSY ,  Oscar FLÄRDH ,  Mikael ÖGREN ,  Richard BOSTRÖM

IPC: B60W30/14 ,  B60W30/18 ,  B60W40/076 ,  B60W40/105 ,  B60W40/13 ,  B60W10/18

Abstract: A method for controlling a motor vehicle, comprising: retrieving road gradient data relating to an expected travelling route of the motor vehicle; based on at least the retrieved road gradient data and on a motor vehicle mass, simulating a required value of a braking power related variable, which required value is needed to prevent a vehicle speed from increasing above a preset desired vehicle speed in an upcoming downhill slope; determining an available value of the braking power related variable of at least one auxiliary brake of the motor vehicle; and based on the determined available value and the simulated required value of the braking power related variable, controlling the vehicle speed and/or at least one brake actuator of the motor vehicle such that the vehicle speed does not increase above the preset desired vehicle speed in the upcoming downhill slope.