Method and apparatus to control temperature of an exhaust aftertreatment system for a hybrid powertrain
First Claim
1. Method for controlling an internal combustion engine during an engine operating cycle, said engine fluidly connected to an exhaust aftertreatment system and operatively connected to an electro-mechanical transmission to transmit tractive power to a driveline, comprising:
- determining a temperature of the exhaust aftertreatment system;
adjusting power output of the engine based upon the temperature of the exhaust aftertreatment system and a preferred temperature range of the exhaust aftertreatment system; and
,controlling the electro-mechanical transmission to transmit tractive power to the driveline to meet an operator torque request based upon the adjusted power output of the engine.
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Accused Products
Abstract
An internal combustion engine is fluidly connected to an exhaust aftertreatment system and operatively connected to an electro-mechanical transmission to transmit tractive power to a driveline. The engine is controlled during an engine operating cycle by determining a temperature of the exhaust aftertreatment system and adjusting power output of the engine based upon the temperature of the exhaust aftertreatment system and a preferred temperature range of the exhaust aftertreatment system. The electro-mechanical transmission is controlled to transmit tractive power to the driveline to meet an operator torque request based upon the adjusted power output of the engine.
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Citations
21 Claims
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1. Method for controlling an internal combustion engine during an engine operating cycle, said engine fluidly connected to an exhaust aftertreatment system and operatively connected to an electro-mechanical transmission to transmit tractive power to a driveline, comprising:
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determining a temperature of the exhaust aftertreatment system; adjusting power output of the engine based upon the temperature of the exhaust aftertreatment system and a preferred temperature range of the exhaust aftertreatment system; and
,controlling the electro-mechanical transmission to transmit tractive power to the driveline to meet an operator torque request based upon the adjusted power output of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Method for controlling an internal combustion engine during an engine operating cycle, said engine operatively connected to an electro-mechanical transmission, comprising:
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monitoring ambient operating conditions and engine operating conditions; determining a temperature of an exhaust aftertreatment system fluidly connected to the engine; adjusting power output of the engine based upon the temperature of the exhaust aftertreatment system and a preferred temperature of the exhaust aftertreatment system; and controlling the electro-mechanical transmission based upon the adjusted power output of the engine. - View Dependent Claims (15, 16, 17, 18)
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19. Method for controlling an internal combustion engine fluidly connected to an exhaust aftertreatment system and operatively connected to a transmission, comprising:
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determining a temperature of the exhaust aftertreatment system; adjusting an engine speed state and an engine torque state based upon the temperature of the exhaust aftertreatment system and a preferred temperature range of the exhaust aftertreatment system to minimize a total energy loss during an engine operating cycle; controlling the engine to the adjusted engine speed state and engine torque state to achieve the preferred temperature of the exhaust aftertreatment system; and controlling the transmission to transmit tractive power to the driveline to meet an operator torque request based upon the preferred engine operation. - View Dependent Claims (20, 21)
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Specification