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Inventor:
Takakura; Shiro
Address:
Wako, JP
No. of patents:
5
Patents:












Patent Number Title Of Patent Date Issued
6978598 Deteriorated state evaluation device for exhaust emission control equipment December 27, 2005
A humidity sensor 4 is disposed downstream of an exhaust gas purifier comprising a hydrocarbon adsorbing catalyst 2, and an air-fuel ratio sensor 5 is disposed at least downstream of the exhaust gas purifier. The hydrocarbon adsorbing ability of a hydrocarbon adsorbent of a hydrocarbon
6799420 Method of evaluating deteriorated state of hydrocarbon adsorbent October 5, 2004
A temperature sensor is disposed near an HC adsorbent in an exhaust system of an internal combustion engine. After the internal combustion engine is shut off, a deteriorated state of the HC adsorbent is evaluated based on a value of the humidity detected by a humidity sensor. The deterio
6367245 Method of evaluating deteriorated state of exhaust gas adsorbent April 9, 2002
Exhaust gas sensors or air-fuel ratio sensors for generating outputs depending on the concentration of HC are disposed respectively upstream and downstream of an HC adsorbent in an exhaust passage. When an exhaust gas emitted from an internal combustion engine is supplied to the exhaust
6334304 Degradation discrimination system of internal combustion engine exhaust gas purification system January 1, 2002
A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage adsorbing unburned HC in exhaust gas generated by the engine. Based on the assumption that the degradation of the adsor
6286306 Exhaust gas purification system of internal combustion engine September 11, 2001
A system for purifying exhaust gas generated by an internal combustion engine having a bypass exhaust gas passage branching from an exhaust pipe which is opened or closed by a switch-over valve, and an adsorbent which adsorbs unburneds component in the exhaust gas installed at the bypass










 
 
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