Method and system for engine control
First Claim
1. A method for limiting idling time of an internal combustion engine in a vehicle having an electronic control module for controlling the internal combustion engine, the method comprising:
- determining a value representative of ambient air temperature; and
automatically disabling continued operation of the internal combustion engine when the value representative of ambient air temperature is within a range determined by selectable upper and lower ambient air temperature limit values.
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Abstract
A method for comprehensive integrated control of an internal combustion engine, such as a compression-ignition engine, utilizing an electronic control module (20) is disclosed. The control strategy integrates various functions of engine control including an acceleration balance test for the engine cylinders, a fuel economy vehicle speed limit adder, a fueling limit for high altitude vehicle operation, throttle logic, a data-hub for operation trending and vehicle component lifing analyses, a gear ratio torque limit, an air temperature based torque limit, enhanced cooling fan control, and an idle shutdown strategy based on ambient air temperature.
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Citations
24 Claims
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1. A method for limiting idling time of an internal combustion engine in a vehicle having an electronic control module for controlling the internal combustion engine, the method comprising:
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determining a value representative of ambient air temperature; and automatically disabling continued operation of the internal combustion engine when the value representative of ambient air temperature is within a range determined by selectable upper and lower ambient air temperature limit values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for limiting idling time of an internal combustion engine of a vehicle having an electronic control module for controlling the engine and a parking brake for maintaining the vehicle in a stationary condition, the method comprising:
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determining that the vehicle is stationary as indicated by the parking brake being engaged; determining a value representative of ambient air temperature; and automatically shutting down the internal combustion engine when the value representative of ambient air temperature is within a range determined by selectable upper and lower ambient air temperature limit values for a first time period. - View Dependent Claims (11, 12, 13, 14)
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15. A system for limiting idling time of an electronically controlled internal combustion engine in a vehicle, the system comprising:
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a memory for storing a predetermined set of instructions and calibration values; a processor in communication with the memory, the processor being operative to determine a value representative of ambient air temperature, and to automatically disable continued operation of the internal combustion engine when the value representative of ambient air temperature is within a range determined by selectable upper and lower ambient air temperature limit values stored in the memory. - View Dependent Claims (16, 17, 18, 19)
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20. A method for controlling an internal combustion engine in a vehicle including a transmission connected to the engine and having a transmission retarder, the vehicle also including a radiator containing engine coolant for cooling the engine during operation and a cooling fan for increasing cooling rate of the engine coolant and engine components, the method comprising:
operating the cooling fan based on an anticipated engine coolant temperature increase. - View Dependent Claims (21, 22, 23, 24)
Specification