Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8176731 | Exhaust gas aftertreatment system Exhaust gas aftertreatment system for internal combustion engines operated with a lean mixture, wherein nitrogen oxides are reduced by an SCR catalyst, and particulates are removed by a particle separator or filter. A thermolysis catalyst is located near the engine ... | 05/15/2012 |
| 8141352 | Exhaust purification device of an internal combustion engine In an internal combustion engine, an NOX selective reducing catalyst is arranged in the engine exhaust passage, and an NOX storage catalyst able to store NOX contained in the exhaust gas is arranged at the upstream of the NOX selective reducing catalyst. The NOX sto... | 03/27/2012 |
| 8132405 | Exhaust emission purifying apparatus for engine An exhaust emission purifying apparatus for an engine, which is provided with: an electric pump sucking and supplying a liquid reducing agent by pumping out of a reducing agent tank; a flow control valve controlling flow rate of the liquid reducing agent; and an inj... | 03/13/2012 |
| 8117834 | Exhaust purification device of internal combustion engine In an internal combustion engine, an NOx selective reduction catalyst is arranged in the engine exhaust passage and a urea aqueous solution stored in a urea aqueous solution tank is fed to the NOx selective reduction catalyst where the NOx is selectively reduced. Op... | 02/21/2012 |
| 8099952 | Exhaust purification device of an internal combustion engine In an internal combustion engine, an NOx selective reducing catalyst is arranged inside an engine exhaust passage, an oxidation catalyst is arranged upstream of the NOx selective reducing catalyst, and an NOx adsorption catalyst is a... | 01/24/2012 |
| 8099951 | Dual bed catalyst system for NOx reduction in lean-burn engine exhaust A method for reducing nitrogen oxides including NO and NO2 in an exhaust stream also including oxygen, carbon monoxide and hydrocarbons at a temperature above about 150° C. includes oxidizing NO in the exhaust stream to NO2, adding diesel fuel... | 01/24/2012 |
| 8091351 | Non-zeolite base metal SCR catalyst An article for treating a gas containing nitrogen oxides including: (a) a monolith substrate; and (b) a catalytic composition containing at least one catalytic component consisting of (i) at least one transition me... | 01/10/2012 |
| 8091350 | Exhaust purification apparatus for engine An exhaust purification apparatus for an engine comprises a selective reduction-type NOx catalyst that is interposed in an exhaust passage of the engine and selectively reduces NOx contained in exhaust gas of the engine, an EGR device that recirculates exhaust gas o... | 01/10/2012 |
| 8042328 | Exhaust gas purifier The present invention provides an exhaust gas purifier capable of appropriately purifying harmful components discharged even from an internal combustion engine or a combustion instrument operated mainly in excess-air conditions. Particularly, the exhaust gas purifie... | 10/25/2011 |
| 8011181 | Exhaust gas cleaning catalyst, exhaust gas cleaning device, and system comprising internal combustion engine The invention makes use of an exhaust gas catalyst, comprising an active component comprising at least one type of metal from noble metals and transition metals; NOx-absorbing material for absorbing and releasing nitrogen oxides according to the surrounding nitrogen... | 09/06/2011 |
| 7975471 | Exhaust purification apparatus of internal combustion engine and control method thereof An engine has a first cylinder group and a second cylinder group. The first cylinder group and the second cylinder group are connected to a common NOx storage reduction catalyst via their corresponding exhaust passageways and their corresponding three-way catalysts,... | 07/12/2011 |
| 7971430 | Diesel turbine SCR catalyst A system for treating exhaust gases from an engine is described. The system includes, the exhaust gases routed from the engine to atmosphere through an exhaust passage, the system comprising: an injector directing a spray of reductant into the exhaust gases routed f... | 07/05/2011 |
| 7950226 | LNT-SCR system optimized for thermal gradient In an exhaust aftertreatment system, two LNTs having differing compositions are configured in series downstream from an inline fuel reformer. The downstream LNT is adapted for desulfation at higher temperatures than the upstream LNT. During desulfation, the system d... | 05/31/2011 |
| 7849681 | Apparatus, system, and method for engine-generated heat utilization in a NO-adsorber aftertreatment system An apparatus, system, and method are disclosed for utilizing engine-generated heat in a NOx-adsorber system. The apparatus may comprise a combustion device generating a heated exhaust stream. The apparatus may include a catalytic component that initiates ... | 12/14/2010 |
| 7845166 | Exhaust system with plural emission treatment devices An exhaust system for an engine with a plurality of combustion chambers. The exhaust system includes a first emission treatment device in fluid communication with at least one of the combustion chambers so as to receive exhaust therefrom. The exhaust system further ... | 12/07/2010 |
| 7784276 | Exhaust gas purifier and method of control therefor It is intended to efficiently remove particulate substances, such as NOx and soot, without poisoning by Sox, etc. from dilute-combustion effecting internal combustion engines, combustion equipment, etc. There is provided an exhaust gas purifier to be installed in ex... | 08/31/2010 |
| 7765800 | Exhaust gas purification apparatus Excessive generation NO2 by oxidation catalyst arrangement upstream of a selective reduction catalyst is suppressed to prevent falling of NOx reduction rate. A selective reduction catalyst 4 capable of selectively reacting NO... | 08/03/2010 |
| 7716924 | Device for purifying exhaust gas of an internal combustion engine A NOx occluding and reducing catalyst 7 is arranged in the exhaust gas passage 2 of a lean burn engine 1. When the engine 1 is in operation at a lean air-fuel ratio, the operating air-fuel ratio is changed over to a rich air-fuel ratio fo... | 05/18/2010 |
| 7712308 | Selective catalyst reduction of nitrogen oxides with hydrogen A system and method for reducing nitrous oxides in diesel exhaust with hydrogen and carbon monoxide over a palladium based catalyst. The catalyst comprises a compound represented by the formula: X % Pd—Y % V2O5/Z, where X is between about 0.1... | 05/11/2010 |
| 7581390 | Method and system for improving sensor accuracy A method and system for improving sensor accuracy of diesel emissions is disclosed. The method and system comprises changing the sensor reading as a function of sensor age to provide a more accurate measure of the diesel emissions. By estimating the degree of sensor... | 09/01/2009 |
| 7520126 | Exhaust purification method and exhaust purification apparatus of internal combustion engine In an internal combustion engine, an exhaust passage is provided with a NOx storing and decomposing catalyst (20). When burning fuel under a lean air-fuel ratio, the nitrogen monoxide is adsorbed by the NOx storing and decomposing cataly... | 04/21/2009 |
| 7490466 | Exhaust gas recirculation and selective catalytic reduction system A power source is provided for use with an exhaust gas recirculation and selective catalytic reduction system. The power source has a main air-intake passage fluidly connected to a first air-intake passage and a second air-intake passage. A first cylinder group may ... | 02/17/2009 |
| 7434387 | Integrated DPF-reformer A method of operating a power generation system involves operating a diesel engine to produce exhaust that is passed first through a combined DPF-fuel reformer and then a LNT. In response to the control signal to regenerate the LNT, fuel is injected into the exhaust... | 10/14/2008 |
| 7430856 | Pressure detection mechanism for exhaust emission control device of internal combustion engine A pressure detection mechanism for a catalyst of an engine, in which the catalyst includes an upstream NSR catalyst and a downstream DPNR catalyst stored in a catalyst casing, which includes a DPNR front pressure detection pipe connected to a space formed by the NSR... | 10/07/2008 |
| 7430855 | Muffling apparatus having exhaust emission purifying function A muffling apparatus 1 of the present invention having an exhaust emission purifying function, including a turning portion 8 in an inside of an exhaust gas flow passage, and having an injection nozzle 12 disposed in an upstream side exhaust gas ... | 10/07/2008 |
| 7428810 | System for increasing efficiency of an SCR catalyst A power source has at least one combustion chamber, an exhaust system fluidly connected to the at least one combustion chamber and configured to receive an exhaust-gas stream, and a fuel source configured to supply fuel to the at least one combustion chamber. The po... | 09/30/2008 |
| 7426825 | Method and apparatus for urea injection in an exhaust aftertreatment system An exhaust aftertreatment system and control system is provided, including a urea injecting device, a selective catalyst reduction device, and, a sensing device operative to monitor a forward portion of the selective catalyst reduction device. The sensing device can... | 09/23/2008 |
| 7415819 | Method and system to automatically drain and dispose of accumulated water from water/fuel separators in diesel A method and system are provided for removing water/fuel mixture from a water/fuel separator. The method injects the water/fuel mixture is injected into an exhaust aftertreatment device where the fuel portion of such mixture is burned and converted into water and ca... | 08/26/2008 |
| 7409821 | Catalytic converter degradation determining system A catalytic converter degradation determining system is configured to accurately determine if a NOx trapping catalytic converter is degraded. The system is configured to detect or estimate the temperature of a NOx trapping catalytic converter and sets a pre-degradat... | 08/12/2008 |
| 7407036 | Muffler for compact combustion engines To provide a muffler for a compact combustion engine, which is simple in structure and effective to sufficiently reduce the temperature of exhaust gases while avoiding contact with an external air, an exhaust guide passage 7 for communicating the exhaust gase... | 08/05/2008 |
| 7399452 | Meander-type catalytic converter To provide an exhaust system (100) for an internal combustion engine having a housing (10) in which there are provided at least one exhaust inlet port (15b) and another exhaust discharge port (15a), and a catalyst element ( | 07/15/2008 |
| 7390469 | Bimodal catalyst-urea SCR system for enhanced NOconversion and durability The present invention discloses a method for reducing NOx in exhaust gases of an internal combustion engine. The purpose of this invention is to convert engine out NOx (approximately 90% NO in diesel exhaust) into roughly a 50:50 mixture of NO ... | 06/24/2008 |
| 7386977 | Method and apparatus for regenerating NOx adsorbers In a method of regenerating a NOx adsorber, the NOx adsorber is used to treat exhaust gases created during the combustion of gaseous fuels in general. Methane is introduced into a reformer or exhaust line in which hydrogen generated during reforming is used to regen... | 06/17/2008 |
| 7380637 | Exhaust-gas muffler The invention is directed to an exhaust-gas muffler (1) of a handheld work apparatus driven by an internal combustion engine. The exhaust-gas muffler (1) includes a muffler housing (2) which includes an engine-end wall (3) having an inlet... | 06/03/2008 |
| 7373775 | Method for metering ammonia into the exhaust-gas region of an internal combustion engine and device for implementing the method A method for metering ammonia into the exhaust-gas region of an internal combustion engine and a device for implementing the method. The ammonia storage capacity of an SCR catalytic converter situated in the exhaust-gas region of the internal combustion engine is ut... | 05/20/2008 |
| 7370473 | Exhaust gas purification device for internal combustion engine By performing main fuel injection and sub fuel injection to perform rich operation of an engine, NOx purging of a NOx catalyst is carried out, and in the NOx purging, the ratio between the main fuel injection quantity and the sub fuel injection quantity is variably ... | 05/13/2008 |
| 7367183 | Internal combustion engine with a fuel reformer and ammonia generator The present invention relates to an internal combustion engine which is used in particular in motor vehicle having a reformer for generating hydrogen, whereby the reformer has a single operating mode in which it generates as much reformate as needed or even more for... | 05/06/2008 |
| 7363758 | Lean burn engine control NOpurging based on positional loading of oxidants in emission control device Disclosed is a method for controlling a lean burn engine coupled to an emission control device that stores oxidants during lean operation, and reacts the stored oxidants during stoichiometric or rich operation, the method comprising estimating amounts of NOx stored ... | 04/29/2008 |
| 7361320 | Exhaust gas purification unit with reducing agent supply The invention proposes an exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, in which a particulate filter and a SCR cat... | 04/22/2008 |
| 7343737 | System for purging sulfate from a NOx trap In the system of the invention, the NOx trap (1) is associated with catalyst-forming means (2) integrated in an exhaust line (3) of a vehicle engine (4), and the engine is associated with a common manifold or “rail” fuel feeder (7,... | 03/18/2008 |
