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US 9,611,907 B2Granted
Aftertreatment thermal management via clutch assembly
AssigneeCummins Inc.
InventorJonathan A. Dickson
Life of this patent
Estimating the term…
Abstract
A vehicle system comprising: an engine; an aftertreatment system that receives exhaust gas from the engine; a clutch assembly; and a controller configured to direct adjusting slippage of the clutch assembly based on a first temperature that is selected from the group consisting of a temperature of the aftertreatment system and an expected temperature of the aftertreatment system.
Claims20
A vehicle system comprising:
- an engine;
- an aftertreatment system that receives exhaust gas from the engine;
- a clutch assembly;
- and
- a computing device configured to direct adjusting slippage of the clutch assembly based on a first temperature that is selected from the group consisting of a temperature of the aftertreatment system and an expected temperature of the aftertreatment system by directing the clutch assembly to:
- provide a first level of slippage when the first temperature is above a first reference temperature and above a second reference temperature;
- provide a second level of slippage that is more than the first level of slippage when the first temperature is below the first reference temperature and above the second reference temperature;
- and
- provide a third level of slippage that is more than the second level of slippage when the first temperature is below the first reference temperature and below the second reference temperature.
6 more elements
A method including:
- adjusting slippage of a clutch assembly responsive to determining a first temperature selected from the group consisting of a temperature of an exhaust aftertreatment system and an expected temperature of the exhaust aftertreatment system, wherein adjusting the slippage of the clutch assembly comprises:
- providing a first level of slippage when the first temperature is above a first reference temperature and above a second reference temperature;
- providing a second level of slippage that is more than the first level of slippage when the first temperature is below the first reference temperature and above the second reference temperature;
- and
- providing a third level of slippage that is more than the second level of slippage when the first temperature is below the first reference temperature and below the second reference temperature.
2 more elements
A computer readable medium containing non-transitory instructions thereon, that when interpreted by at least one processor cause the at least one processor to:
- adjust slippage of a clutch assembly responsive to determining a first temperature selected from the group consisting of a temperature of an exhaust aftertreatment system and an expected temperature of the exhaust aftertreatment system by directing the clutch assembly to:
- provide a first level of slippage when the first temperature is above a first reference temperature and above a second reference temperature;
- provide a second level of slippage that is more than the first level of slippage when the first temperature is below the first reference temperature and above the second reference temperature;
- and
- provide a third level of slippage that is more than the second level of slippage when the first temperature is below the first reference temperature and below the second reference temperature.
2 more elements
Dependencies are inferred from the claim text.