METHOD AND APPARATUS TO CONTROL WARM-UP OF AN EXHAUST AFTERTREATMENT SYSTEM FOR A HYBRID POWERTRAIN
First Claim
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1. A method of controlling an internal combustion engine during an operating cycle, said engine fluidly connected to an exhaust aftertreatment system and operatively connected to a transmission to transmit tractive power to a driveline, the method comprising;
- monitoring ambient operating conditions and engine operating conditions;
determining a temperature of the exhaust aftertreatment system;
determining a preferred engine operation to achieve a preferred temperature of the exhaust aftertreatment system and to minimize a total energy loss during the engine operating cycle;
controlling the engine to the preferred engine operation; and
controlling the transmission to achieve a torque output based upon the preferred engine operation.
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Abstract
An internal combustion engine is controlled to achieve a preferred temperature of the exhaust aftertreatment system and to minimize a total engine energy loss. A transmission is controlled to achieve a torque output based upon the preferred engine operation.
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Citations
19 Claims
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1. A method of controlling an internal combustion engine during an operating cycle, said engine fluidly connected to an exhaust aftertreatment system and operatively connected to a transmission to transmit tractive power to a driveline, the method comprising;
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monitoring ambient operating conditions and engine operating conditions; determining a temperature of the exhaust aftertreatment system; determining a preferred engine operation to achieve a preferred temperature of the exhaust aftertreatment system and to minimize a total energy loss during the engine operating cycle; controlling the engine to the preferred engine operation; and controlling the transmission to achieve a torque output based upon the preferred engine operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An article of manufacture, comprising:
a computer-readable medium encoded with a program to control an internal combustion during an engine operating cycle, said engine fluidly connected to an exhaust aftertreatment system and operatively connected to a transmission to transmit tractive power to a driveline, the program comprising; code to monitor ambient operating conditions and engine operating conditions; code to determine a temperature of the exhaust aftertreatment system; code to determine a preferred engine operation to achieve a preferred temperature of the exhaust aftertreatment system and minimize a total energy loss during the engine operating cycle; and code to control the engine to the preferred engine operation. - View Dependent Claims (12, 13, 14, 15)
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16. An article of manufacture, comprising:
a computer-readable medium encoded with a program to control 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, the program comprising; code to determine a preferred engine operation to achieve a preferred temperature of the exhaust aftertreatment system and minimize a total energy loss during the engine operating cycle; code to control the engine to the preferred engine operation; and code to control the electro-mechanical transmission to achieve a torque output based upon the preferred engine operation. - View Dependent Claims (17, 18, 19)
Specification