EMISSION CONTROL SYSTEM WITH HEAT RECOVERY DEVICE
First Claim
1. An emission control system comprising:
- an absorbent provided in a passage through which an exhaust emission of an internal combustion engine flows, the exhaust emission containing a particular component, the absorbent acting to absorb the particular component with a temperature thereof being lower than a first temperature, the absorbent acting to desorb therefrom the absorbed particular component with the temperature thereof being equal to or higher than the first temperature;
a catalyst provided in the passage, the catalyst acting to convert the particular component desorbed from the absorbent into another component with a temperature thereof being equal to or higher than a second temperature, the second temperature being higher than the first temperature;
a heat recovery device disposed in the passage upstream of the absorbent and configured to recover heat from the exhaust emission by heat exchange between a heat-transfer medium and the exhaust emission; and
an adjusting unit configured to adjust an amount of heat to be recovered by the heat recovery device to thereby adjust a temperature state of the exhaust emission.
1 Assignment
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Accused Products
Abstract
In an emission control system, an absorbent in exhaust-emission passage absorbs a particular component in the emission with a temperature thereof being lower than a first temperature, and desorbs therefrom the absorbed particular component with the temperature thereof being equal to or higher than the first temperature. A catalyst in the exhaust-emission passage converts the particular component desorbed from the absorbent into another component with a temperature thereof being equal to or higher than a second temperature higher than the first temperature. A heat recovery device is disposed in the exhaust-emission passage upstream of the absorbent and recovers heat from the exhaust emission by heat exchange between a heat-transfer medium and the exhaust emission. An adjusting unit adjusts an amount of heat to be recovered by the heat recovery device to thereby adjust a temperature state of the exhaust emission.
32 Citations
19 Claims
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1. An emission control system comprising:
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an absorbent provided in a passage through which an exhaust emission of an internal combustion engine flows, the exhaust emission containing a particular component, the absorbent acting to absorb the particular component with a temperature thereof being lower than a first temperature, the absorbent acting to desorb therefrom the absorbed particular component with the temperature thereof being equal to or higher than the first temperature; a catalyst provided in the passage, the catalyst acting to convert the particular component desorbed from the absorbent into another component with a temperature thereof being equal to or higher than a second temperature, the second temperature being higher than the first temperature; a heat recovery device disposed in the passage upstream of the absorbent and configured to recover heat from the exhaust emission by heat exchange between a heat-transfer medium and the exhaust emission; and an adjusting unit configured to adjust an amount of heat to be recovered by the heat recovery device to thereby adjust a temperature state of the exhaust emission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification