State determining apparatus for exhaust gas purifier
First Claim
1. A state determining apparatus for an exhaust gas purifier arranged in an exhaust system of an internal combustion engine for determining a state of said exhaust gas purifier including an adsorbent capable of adsorbing hydrocarbons and moisture in exhaust gases, said state determining apparatus comprising:
- a humidity sensor arranged near said adsorbent in said exhaust system for detecting a humidity in an exhaust pipe of said exhaust system;
temperature state detecting means for detecting a temperature state in said exhaust system; and
adsorbent state determining means for determining a state of said adsorbent in accordance with the humidity in the exhaust pipe detected by said humidity sensor and the temperature state in said exhaust system detected by said temperature state detecting means.
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Accused Products
Abstract
A state determining apparatus for an exhaust gas purifier is provided for accurately determining the state of the exhaust gas purifier including an adsorbent for adsorbing hydrocarbons, including a deterioration of the adsorbent, in accordance with a temperature state in an exhaust system of an internal combustion engine. The state determining apparatus for an exhaust gas purifier is arranged in an exhaust system of the internal combustion engine for determining the state of the exhaust gas purifier including the adsorbent capable of adsorbing hydrocarbons and moisture in exhaust gas. The state determining apparatus comprises a humidity sensor arranged near the adsorbent in the exhaust system for detecting the humidity within a bypass exhaust pipe, and an ECU for determining a temperature state of the exhaust system and determining the state of adsorbent in accordance with the humidity within the bypass exhaust pipe detected by the humidity sensor and the temperature state in the exhaust system detected by the ECU.
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Citations
13 Claims
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1. A state determining apparatus for an exhaust gas purifier arranged in an exhaust system of an internal combustion engine for determining a state of said exhaust gas purifier including an adsorbent capable of adsorbing hydrocarbons and moisture in exhaust gases, said state determining apparatus comprising:
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a humidity sensor arranged near said adsorbent in said exhaust system for detecting a humidity in an exhaust pipe of said exhaust system;
temperature state detecting means for detecting a temperature state in said exhaust system; and
adsorbent state determining means for determining a state of said adsorbent in accordance with the humidity in the exhaust pipe detected by said humidity sensor and the temperature state in said exhaust system detected by said temperature state detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification