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US 12,768,327 B2Granted
Predictive engine stop-start based on clutch energy
AssigneeVolvo Truck Corporation
InventorsÖdül Bilen, Henrik Ryberg
Life of this patent
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Abstract
A computer system has processing circuitry to determine an energy level in a controllable clutch between a gearbox and a combustion engine of a vehicle powertrain. The energy level is indicative of the induced energy in the clutch during a time duration prior to determining the energy level. At least one of an engine start function and an engine off function are controlled depending on the determined energy level in relation to an energy threshold level.
Claims17
A computer system comprising processing circuitry configured to:
- determine an energy level in a controllable clutch between a transmission and a combustion engine of a vehicle powertrain, the energy level is indicative of the induced energy in the clutch during a time duration prior to determining the energy level,
- control at least one of an engine start function and an engine off function depending on the determined energy level in relation to an energy threshold level,
- calculate a predicted energy level in the clutch, the predicted energy level being a sum of the determined energy level and a potential additional energy resulting from using the clutch for engine start function, and
- determine that the predicted energy level is below the energy threshold level, and
- control the clutch for performing the engine start function.
2 more elements
A computer-implemented method, comprising:
- determining, by processing circuitry of a computer system, an energy level in a controllable clutch between a transmission and a combustion engine of a vehicle powertrain, the energy level is indicative of the induced energy in the clutch during a time duration prior to determining the energy level,
- controlling, by the processing circuitry, at least one of an engine start function and an engine off function depending on the determined energy level in relation to an energy threshold level,
- calculating, by the processing circuitry, a predicted energy level in the clutch, the predicted energy level being a sum of the determined energy level and a potential additional energy resulting from using the clutch for engine start function,
- determining, by the processing circuitry, that the predicted energy level is below the energy threshold level, and
- controlling, by the processing circuitry, the clutch for performing the engine start function.
2 more elements
Dependencies are inferred from the claim text.