Abstract:
PROBLEM TO BE SOLVED: To provide a failure detecting device provided in an exhaust passage of an internal combustion engine, capable of accurately detecting the failure of a filter for collecting PM (particulate matters). SOLUTION: The failure detecting device of the internal combustion engine includes: the filter that is provided in the exhaust passage of the internal combustion engine and collects PM in exhaust; a filter regeneration means that performs filter regeneration treatment for oxidatively removing the PM collected on the filter; a first branch passage and a second branch passage that diverge from the exhaust passage of the downstream side from the filter; a volatile particle-removal device that is provided in the first branch passage and removes volatile particles contained in the PM in the exhaust; a first sensor that is provided in the first branch passage of the downstream side from the volatile particle-removal device and detects the amount of PM in the exhaust; a second sensor that is provided in the second branch passage and detects the amount of PM in the exhaust; and a failure detection means that operates the volatile particle-removal device during the execution of the filter regeneration treatment and detects the failure of the filter based on the difference between the detected value by the first sensor and the detected value by the second sensor. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel adding device for an internal combustion engine efficiently removing deposit formed in a fuel passage. SOLUTION: The fuel adding device for the internal combustion engine is provided with a fuel adding valve 8 adding fuel guided to the fuel passage 30 of an inside from an injection port 30a of a tip of the fuel passage 30, and an ozone supply device supplying an inside of the fuel passage 30 with ozone. The fuel adding valve 8 is provided with an ozone passage 31 merging with the fuel passage 30 in the fuel adding valve 8 and supplies the fuel passage 30 with ozone from the ozone supply device via the ozone passage 31. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To produce an exhaust gas cleaning catalyst in which the sintering of a catalytic metal is restrained. SOLUTION: This exhaust gas cleaning catalyst in one embodiment (1) is provided with: a substrate 10; a catalyst-depositing layer 12 formed on the substrate 10; ferromagnetic particles 14 deposited on the catalyst-depositing layer 12; a catalytic metal 16 deposited on the catalyst-depositing layer 12 in such a state that the catalytic metal is attracted/fixed to the ferromagnetic particles 14 by magnetic force; and a ferromagnetic block 18 which is arranged in the substrate 10 and has the volume larger than that of each of ferromagnetic particles 14 so that each of ferromagnetic particles 14 is opposed to the ferromagnetic block 18 while interposing the catalyst-depositing layer 12 between them. The exhaust gas cleaning catalyst in the other embodiment (2) is provided with: the substrate 10; a ferromagnetic layer 20 which is a continuous layer formed on the substrate 10 and has the volume larger than that of each of after-mentioned ferromagnetic particles 14; the catalyst-depositing layer 12 formed on the ferromagnetic layer 20; the ferromagnetic particles 14 deposited on the catalyst-depositing layer 12; and the catalytic metal 16 deposited on the catalyst-depositing layer 12 in such a state that the catalytic metal is attracted/fixed to the ferromagnetic particles 14 by magnetic force so that each of ferromagnetic particles 14 is opposed to the ferromagnetic layer 20 while interposing the catalyst-depositing layer 12 between them. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To produce an exhaust gas cleaning catalyst which is prevented from sintering a catalyst metal; and to provide an exhaust gas cleaning apparatus using the same. SOLUTION: The exhaust gas cleaning catalyst comprises a substrate, a catalyst carrier layer formed on the substrate, and a catalyst metal carried on the catalyst carrier layer; the catalyst metal has ferromagnetism, and the catalyst carrier layer contains ferromagnetic particles dispersed therein. The exhaust gas cleaning apparatus uses the catalyst and is equipped with a detection means for exhaust gas temperatures and a means for controlling the exhaust gas temperatures to a temperature lower than the Curie point of the ferromagnetic particles. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust emission treatment method capable of efficiently recirculating exhaust emission from a collecting container to an intake passage while the deterioration of the state of combustion of an internal combustion engine is suppressed. SOLUTION: This exhaust emission treatment method comprises a step for collecting exhaust emission from an exhaust passage 5 into the collecting container 21 when catalysts 15 and 16 installed in the exhaust passage 5 of the internal combustion engine 1 cannot develop a specified purification performance and a step for recirculating the collected exhaust emission to the intake passage 3 of the internal combustion engine 1. In the step for recirculating the exhaust emission, the flow rate of the exhaust emission recirculated to the intake passage is varied according to the state of combustion of the internal combustion engine 1. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To suppress the release of noxious components right after starting an internal combustion engine. SOLUTION: This exhaust gas trapping device comprises a trapping container 11 capable of holding exhaust gas, an exhaust gas delivery passage 12 for guiding the exhaust gas from an exhaust passage 4 to the trapping container 11, an exhaust gas introduction passage 13 for guiding the exhaust gas from the trapping container 11 to the upstream side of a catalyst 7, a selector valve 14 to be switchable between a position of permitting the introduction of the exhaust gas from the exhaust passage 4 to the exhaust gas delivery passage 12 and a position of preventing the introduction thereof, and an on-off valve to be switchable between a position of permitting the introduction of the exhaust gas via the exhaust gas introduction passage 13 and a position of preventing the introduction thereof. After starting the internal combustion engine 1 but before satisfying preset trapping finishing conditions, the selector valve 14 is controlled so that at least part of the exhaust gas from the internal combustion engine 1 is trapped via the exhaust gas delivery passage 12 into the trapping container 11. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To suppress a dioxin content contained in the exhaust gas from a combustion system. SOLUTION: The filters 30, 40 and 20 are set to the feeding passages for feeding the materials to be heated to an engine 10, that is, a fuel, air and a lubricant, and are provided with the elements 33, 42 and 23 for reducing a chlorine content, respectively. Each element is composed by carrying a chlorine adsorbent such as an activated carbon, sodium sulfite, calcium sulfite or sodium ascorbate on a prescribed substrate. By the action of such a filter, the flow of chlorine into a combustion chamber 11 and the occurrence of dioxin caused thereby can be suppressed.
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel generator from combustible waste for on-board internal combustion engine. SOLUTION: A fuel generator from combustible waste in which supercritical water is brought into contact with hydrocarbon-containing combustible waste to generate the fuel including gaseous and liquid hydrocarbons is loaded on a vehicle. The fuel generator prepares the supercritical water by utilizing the exhaustion heat from the on-board internal combustion engine. The prepared hydrocarbon fuel is reformed with an on-board reformer by utilizing the exhaustion heat from the on-board combustion engine into the gas fuel comprising CO and H2 and the gas fuel is combusted as a fuel for the on-board combustion engine. The fuel generator from combustible waste is loaded on the vehicle and the heat source needed for the fuel generation is readily obtained from the on-board internal combustion engine and the cost for storing tentatively the generated fuel and transporting the generated fuel to the consumer place becomes unnecessary and the energy of the combustible waste can be efficiently utilized in low costs.
Abstract:
PROBLEM TO BE SOLVED: To provide a catalyst for particulate combustion which realizes the easy combustion of the particulate captured by a particulate filter on a diesel vehicle at a specially lower temperature than conventionally. SOLUTION: This catalyst for particulate combustion includes a catalyst for NO oxidation consisting of a catalytic component carried by a first carrier of acidic quality and a catalyst for NO2 decomposition consisting of a catalytic component carried by a second carrier. The catalyst for NO oxidation preferably comprises a precious metal such as platinum carried by the first carrier of acidic quality such as tungstic acid/zirconia and the catalyst for NO2 decomposition preferably comprises a catalytic component selected from the group of transition metals carried by the second carrier. Alternatively the catalyst for NO2 decomposition preferably comprises at least one kind of metal selected from an alkali metal and an alkali earth and the precious metal such as platinum carried by the second carrier such as titania.
Abstract:
PROBLEM TO BE SOLVED: To sufficiently discharge SOX from absorbent while obstructing that un-burnt HC and CO are discharged to the atmosphere. SOLUTION: NOX absorbent 12 is arranged in an exhaust passage, which is formed due to absorb NOX in exhaust gas which flows in when an air-fuel ratio of flowing exhaust gas is in a lean condition, and due to discharge NOX to be absorbed when oxygen concentration in flowing exhaust gas is reduced. SOX absorbent 9 is arranged upstream from the NOX absorbent 12, which is formed due to absorb SOX in exhaust gas which flows in when an air-fuel ratio of flowing exhaust gas is in a lean condition, and due to discharge SOX to be absorbed when oxygen concentration in flowing exhaust gas is reduced. An oxidation catalyst 15 having oxygen storage function is arranged downstream from the NOX absorbent 12. The air-fuel ratio of exhaust gas which flows into the SOX absorbent 9 is set in a rich condition so as to discharge SOX from the SOX absorbent 9, and the air-fuel ratio of exhaust gas which flows into the SOX absorbent 9 is returned in a lean condition when the air-fuel ratio detected by an air-fuel ratio sensor 29d arranged downstream from the oxidation catalyst 15 reaches a rich condition.