Fuel system diagnostics by analyzing engine cylinder pressure signal and crankshaft speed signal
First Claim
Patent Images
1. A method for distinguishing between combustion issues and sensor faults within an engine comprising:
- monitoring pressure sensor data from a cylinder within said engine;
monitoring engine data describing combustion health from a source other than a pressure sensor;
analyzing said pressure sensor data to diagnose an anomalous combustion event;
analyzing said engine data;
comparing said anomalous combustion event to said analysis of said engine data; and
indicating a pressure sensor fault warning if said comparing diagnoses a pressure sensor fault.
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Abstract
A method for distinguishing between combustion issues and sensor faults within an engine includes monitoring pressure sensor data from a cylinder within the engine, monitoring engine data describing combustion health from a source other than a pressure sensor, analyzing the pressure sensor data to diagnose an anomalous combustion event, comparing the anomalous combustion event to analysis of the engine data, and indicating a pressure sensor fault warning if the comparison diagnoses a pressure sensor fault.
42 Citations
19 Claims
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1. A method for distinguishing between combustion issues and sensor faults within an engine comprising:
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monitoring pressure sensor data from a cylinder within said engine; monitoring engine data describing combustion health from a source other than a pressure sensor; analyzing said pressure sensor data to diagnose an anomalous combustion event; analyzing said engine data; comparing said anomalous combustion event to said analysis of said engine data; and indicating a pressure sensor fault warning if said comparing diagnoses a pressure sensor fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for distinguishing between combustion issues and sensor faults within an engine comprising:
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monitoring pressure sensor data from a cylinder within said engine; monitoring crankshaft speed data; analyzing said pressure sensor data to diagnose a pressure indicated anomalous combustion event; analyzing said crankshaft speed data to diagnose a crankshaft speed indicated anomalous combustion event; comparing said pressure indicated anomalous combustion event to said crankshaft speed indicated anomalous combustion event; and indicating a pressure sensor fault warning is said comparing diagnoses a pressure sensor fault. - View Dependent Claims (15, 16)
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17. An apparatus for distinguishing between combustion issues and sensor faults within an engine comprising:
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a pressure sensor in communication with a cylinder of said engine; a crankshaft speed sensor; a control module in communication with said pressure sensor and said crankshaft speed sensor, said control module analyzing data from said pressure sensor and data from said crankshaft speed sensor, determining whether data from both sensors are within acceptable combustion ranges, and indicating a pressure sensor warning if said data from said pressure sensor indicates an anomalous combustion event and said data from said crankshaft speed sensor indicates normal combustion. - View Dependent Claims (18, 19)
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Specification