Combustion control system and method for spark-ignition internal combustion engine
First Claim
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1. A combustion control system for a spark ignition internal combustion engine, the system being configured to:
- detect engine operating conditions;
predict, based on the detected engine operating conditions, autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas; and
control combustion to establish such a relationship between the autoignition timing and the amount of heat released due to the autoignition as to give a knock intensity not higher than a specified intensity limit.
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Abstract
A combustion control system for a spark ignition internal combustion engine, is configured to detect engine operating conditions, predict, based on the detected engine operating conditions, an autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas, calculate a knock intensity from the autoignition timing and the amount of heat released due to the autoignition, and control combustion in the engine in such a manner that the knock intensity is lower than or equal to a specified intensity limit.
22 Citations
22 Claims
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1. A combustion control system for a spark ignition internal combustion engine, the system being configured to:
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detect engine operating conditions; predict, based on the detected engine operating conditions, autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas; and control combustion to establish such a relationship between the autoignition timing and the amount of heat released due to the autoignition as to give a knock intensity not higher than a specified intensity limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A combustion control method for a spark-ignition internal combustion engine, comprising:
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detecting engine operating conditions; predicting, based on the detected engine operating conditions, autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas; and controlling combustion to establish such a relationship between the autoignition timing and the amount of heat released due to the autoignition as to give a knock intensity not higher than a specified intensity limit. - View Dependent Claims (10, 11)
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12. A combustion control system for a spark-ignition internal combustion engine, the system being configured to:
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detect engine operating conditions; predict, based on the detected engine operating conditions, an autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas; calculate a knock intensity from the autoignition timing and the amount of heat released due to the autoignition; and control combustion in the engine in such a manner that the knock intensity is lower than or equal to a specified intensity limit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A combustion control method for a spark-ignition internal combustion engine, comprising:
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detecting engine operating conditions; predicting, based on the detected engine operating conditions, autoignition timing of an end gas and an amount of heat released due to autoignition of the end gas; calculating a knock intensity from the autoignition timing and the amount of heat released due to the autoignition; and controlling combustion in the engine in such a manner that the knock intensity is lower than or equal to a specified intensity limit. - View Dependent Claims (21, 22)
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Specification