Method and system for a vehicle
AssigneeScania CV AB
InventorsMustafa Abdul-Rasool, Oskar Johansson, Mikael Ögren
Life of this patent
Estimating the term…
Abstract
A method for running of a vehicle having a combustion engine which can selectively be connected to a driveshaft (104, 105) for propulsion of the vehicle, the vehicle can be run in a first mode (M1) with the engine connected to the driveshaft (104, 105) and in which fuel supply to the engine is substantially shut off, in a second mode (M2) with the engine disconnected from the driveshaft (104, 105) and a third mode like the first mode, but with the fuel supply not cut off. On a downgrade, determining whether running in the first mode (M1) will result in a speed increase, and then running in the second mode (M2) if running it in the first mode (M1) would cause a speed increase.
Claims21
A method for running a vehicle, wherein the vehicle comprises a combustion engine and a driveshaft to which the engine can selectively be connected to deliver driving force to the driveshaft for propulsion of the vehicle;
- the vehicle is selectively run in a first mode (M1) in which the engine is connected to the driveshaft and a fuel supply to the engine is substantially shut off, and in a second mode (M2), in which the engine is disconnected from the driveshaft;
- wherein the vehicle is or will be travelling on a downgrade;
- the method comprises:
- determining whether running the vehicle on the downgrade in the first mode (M1) will result in a speed increase of the vehicle;
- and
- then running the vehicle in the second mode (M2) if running the vehicle in the first mode (M1) would result in a speed increase of the vehicle.
A system for running a vehicle, wherein the vehicle comprises a combustion engine and a driveshaft to which the engine may be selectively connected to deliver driving force to the driveshaft for propulsion of the vehicle;
- the vehicle is configured to be selectively run in a first mode (M1) in which the engine is connected to the driveshaft, and a device for selectively permitting or shutting off supply of fuel to the engine is operated so that a fuel supply to the engine may be selectively substantially shut off, or the vehicle is configured to run in a second mode (M2) in which the engine is disconnected from the driveshaft;
- for a situation where the vehicle is or will be travelling on a downgrade, the system comprises a device configured for determining whether running on the downgrade in the first mode (M1) will result in a speed increase for the vehicle;
- and
- a further device for running the vehicle in the second mode (M2) if it is determined that running the vehicle in the first mode (M1) would result in a speed increase for the vehicle.
Dependencies are inferred from the claim text.