Exhaust gas recirculation system for an internal combustion engine
First Claim
1. An exhaust gas recirculation system for an internal combustion engine having a combustion chamber and an exhaust passage, the exhaust passage extending from the combustion chamber to the atmosphere so as to conduct exhaust gas from the combustion chamber to the atmosphere, the exhaust gas recirculation system comprising:
- (a) first means for directing the exhaust gas back to the combustion chamber to recirculate the exhaust gas through the combustion chamber;
(b) second means, associated with the first means, for controllably determining the percentage of the exhaust gas recirculated;
(c) third means for sensing the average pressure in the exhaust passage; and
(d) fourth means, responsive to the sensed exhaust pressure, for controlling the second means in such a manner that the percentage of the exhaust gas recirculated is independent of variations in the average pressure in the exhaust passage.
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Accused Products
Abstract
An exhaust gas recirculation system is applied to an internal combustion engine having a combustion chamber and an exhaust passage conducting exhaust gas from the combustion chamber to the atmosphere. The system includes a first mechanism provided to recirculate the exhaust gas through the combustion chamber. A second mechanism is associated with the first mechanism to adjustably determine the percentage of the exhaust gas recirculated. A sensor detects the average pressure in the exhaust passage. In response to the detected exhaust pressure, a third mechanism controls the second mechanism in such a manner that the percentage of the exhaust gas recirculated is independent of the variations in the average pressure in the exhaust passage.
19 Citations
10 Claims
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1. An exhaust gas recirculation system for an internal combustion engine having a combustion chamber and an exhaust passage, the exhaust passage extending from the combustion chamber to the atmosphere so as to conduct exhaust gas from the combustion chamber to the atmosphere, the exhaust gas recirculation system comprising:
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(a) first means for directing the exhaust gas back to the combustion chamber to recirculate the exhaust gas through the combustion chamber; (b) second means, associated with the first means, for controllably determining the percentage of the exhaust gas recirculated; (c) third means for sensing the average pressure in the exhaust passage; and (d) fourth means, responsive to the sensed exhaust pressure, for controlling the second means in such a manner that the percentage of the exhaust gas recirculated is independent of variations in the average pressure in the exhaust passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification