System and method for diagnosing and calibrating internal combustion engines
First Claim
1. A method for determining a predetermined operating condition of an internal combustion engine, the method comprising:
- measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle;
determining at least a first value for an operating parameter of the engine using the measured cylinder pressure;
determining a second value for the operating parameter of the engine using data received from at least one engine sensor; and
generating a predetermined signal if a difference between the first value and the second value has a predetermined relationship.
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Accused Products
Abstract
A method, system, and machine-readable storage medium for determining a predetermined operating condition of an internal combustion engine are disclosed. In operation, the method, system and machine-readable storage medium measure a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle. Next, the method, system, and machine-readable storage medium determine at least a first value for an operating parameter of the engine using the measured cylinder pressure, determine a second value for the operating parameter of the engine using data received from at least one engine sensor, and then generate a predetermined signal if a difference between the first value and the second value has a predetermined relationship.
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Citations
38 Claims
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1. A method for determining a predetermined operating condition of an internal combustion engine, the method comprising:
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measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle;
determining at least a first value for an operating parameter of the engine using the measured cylinder pressure;
determining a second value for the operating parameter of the engine using data received from at least one engine sensor; and
generating a predetermined signal if a difference between the first value and the second value has a predetermined relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A machine-readable storage medium having stored thereon machine executable instructions, the execution of said instructions adapted to implement a method for determining a predetermined operating condition of an internal combustion engine, the method comprising:
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measuring a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle;
determining at least a first value for an operating parameter of the engine using the measured cylinder pressure;
determining a second value for the operating parameter of the engine using data received from at least one engine sensor; and
generating a predetermined signal if a difference between the first value and the second value has a predetermined relationship. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for determining a predetermined operating condition of an internal combustion engine, the apparatus comprising:
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a module configured to measure a cylinder pressure in at least one combustion chamber at a predetermined point in a combustion cycle;
a module configured to determine at least a first value for an operating parameter of the engine using the measured cylinder pressure;
a module configured to determine a second value for the operating parameter of the engine using data received from at least one engine sensor; and
a module configured to generate a predetermined signal if a difference between the first value and the second value has a predetermined relationship. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification