SYSTEM AND METHOD FOR DETECTING CYLINDER MISFIRE
First Claim
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1. A system for detecting individual cylinder misfire in multiple cylinder internal combustion (IC) engine having exhaust gas recirculation (EGR), said system comprising:
- a device for predicting EGR flow rate on a cylinder to cylinder basis;
a device for sensing actual EGR flow rate on a cylinder to cylinder basis with all cylinders firing; and
a device for comparing the predicted EGR flow rate to the actual EGR flow to determine individual cylinder misfire.
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Abstract
A system for detecting individual cylinder misfire in a multiple cylinder internal combustion (IC) engine having exhaust gas recirculation (EGR). The system includes: a device for predicting EGR flow rate on a cylinder to cylinder basis; a device for sensing actual EGR flow rate on a cylinder to cylinder basis with all cylinders firing; and a device for comparing the predicted EGR flow rate to the actual EGR flow to determine individual cylinder misfire.
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Citations
19 Claims
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1. A system for detecting individual cylinder misfire in multiple cylinder internal combustion (IC) engine having exhaust gas recirculation (EGR), said system comprising:
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a device for predicting EGR flow rate on a cylinder to cylinder basis; a device for sensing actual EGR flow rate on a cylinder to cylinder basis with all cylinders firing; and a device for comparing the predicted EGR flow rate to the actual EGR flow to determine individual cylinder misfire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of determining individual cylinder misfiring in a multiple cylinder misfiring in a multiple cylinder internal combustion engine (IC) engine having exhaust gas recirculation (EGR) comprising the steps of:
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predicting EGR flow rate on a cylinder to cylinder basis with all cylinders firing; sensing actual EGR flow rate on a cylinder to cylinder basis; and comparing the predicted EGR flow rate to the actual EGR flow rate to determine individual cylinder misfiring. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification