Computer system comprising processing circuitry configured to control gear selection of a powertrain of a vehicle a powertrain a vehicle and a computer-implemented method
AssigneeVolvo Truck Corporation
InventorsHanna WINBLAD, Samuel Jakobsson, Kristoffer Rydquist, Emma Svärling, Andreas Magnusson
Life of this patent
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Abstract
A computer system has processing circuitry to control gear selection of a powertrain of a vehicle. The powertrain includes a first power unit and a second power unit, a shiftable transmission and a range gear arrangement, wherein the processing circuitry is further configured to, for a take-off situation of the vehicle: select a first high range gear from a set of high range gears when an achievable acceleration for the first high range gear is equal to or exceeds an acceleration limit.
Claims15
A computer system comprising processing circuitry configured to control gear selection of a powertrain of a vehicle, wherein the powertrain comprises:
- a first power unit and a second power unit,
- a shiftable transmission which is shiftable between a plurality of gears with different gear ratios, wherein the shiftable transmission comprises a first and a second input shaft, and wherein the first input shaft is configured to be drivingly connected to the first power unit and the second input shaft is configured to be drivingly connected to the second power unit,
- /a range gear arrangement which is shiftable between at least a low range gear state and a high range gear state, wherein a gear ratio of the range gear arrangement in the low range gear state is higher than a gear ratio of the range gear arrangement in the high range gear state, wherein the range gear arrangement is configured to be drivingly connected to the shiftable transmission such that the shiftable transmission and the range gear arrangement together provides a set of low range gears and a set of high range gears, and wherein the powertrain is configured such that shifting the range gear arrangement between the low range gear state and the high range gear state results in a power transfer interruption,
- wherein the processing circuitry is further configured to, for a take-off situation of the vehicle:
- select a first high range gear from the set of high range gears when an achievable acceleration for the first high range gear is equal to or exceeds an acceleration limit.
A computer-implemented method for controlling gear selection of a powertrain of a vehicle, wherein the powertrain comprises:
- a first power unit and a second power unit,
- a shiftable transmission which is shiftable between a plurality of gears with different gear ratios, wherein the shiftable transmission comprises a first and a second input shaft, and
- wherein the first input shaft is drivingly connected to the first power unit and the second input shaft is drivingly connected to the second power unit,
- a range gear arrangement which is shiftable between at least a low range gear state and a high range gear state, wherein a gear ratio of the range gear arrangement in the low range gear state is higher than a gear ratio of the range gear arrangement in the high range gear state,
- wherein the range gear arrangement is drivingly connected to the shiftable transmission such that the shiftable transmission and the range gear arrangement together provides a set of low range gears and a set of high range gears, and wherein the powertrain is configured such that shifting the range gear arrangement between the low range gear state and the high range gear state results in a power transfer interruption,
- wherein the method comprises, for a take-off situation of the vehicle:
- selecting, by processing circuitry of a computer system, a first high range gear from the set of high range gears when an achievable acceleration for the first high range gear is equal to or exceeds an acceleration limit.
Dependencies are inferred from the claim text.