BLOCK HEATER DETECTION FOR IMPROVED STARTABILITY
First Claim
1. A method of operating an internal combustion engine, the method comprising:
- sensing a temperature of an engine coolant when the internal combustion engine is not running;
sensing a temperature of a secondary engine component when the internal combustion engine is not running;
calculating a numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component; and
adjusting at least one start parameter setting used to start the internal combustion engine to compensate for a low temperature start of the internal combustion engine based upon the sensed temperature of the engine coolant and the numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component.
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Abstract
A method of starting an internal combustion engine includes sensing a temperature of an engine coolant at an engine block of the internal combustion engine, and sensing a temperature of a secondary engine component remote from the engine block when the internal combustion engine is not running. A numerical difference between the temperature of the engine coolant and the temperature of the secondary engine component is calculated. A start parameter setting used to control the start of the internal combustion engine is adjusted based upon both the sensed temperature of the engine coolant and the numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component.
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Citations
16 Claims
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1. A method of operating an internal combustion engine, the method comprising:
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sensing a temperature of an engine coolant when the internal combustion engine is not running; sensing a temperature of a secondary engine component when the internal combustion engine is not running; calculating a numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component; and adjusting at least one start parameter setting used to start the internal combustion engine to compensate for a low temperature start of the internal combustion engine based upon the sensed temperature of the engine coolant and the numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of starting an internal combustion engine, the method comprising:
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sensing a temperature of an engine coolant at an engine block of the internal combustion engine when the internal combustion engine is not running; sensing a temperature of a secondary engine component remote from the engine block of the internal combustion engine when the internal combustion engine is not running; calculating a numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component; adjusting at least one start parameter setting used to start the internal combustion engine to compensate for a low temperature start of the internal combustion engine based upon the sensed temperature of the engine coolant and the numerical difference between the sensed temperature of the engine coolant and the sensed temperature of the secondary engine component; and starting the internal combustion engine after adjusting the at least one start parameter setting. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification