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Class 60/274 - Anti-pollution


Subclass of Class 60 - Power plants
Definition: Processes in which the handling or treatment serves to remove
No. of patents: 2263
Last issue date: 01/10/2012


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NumberTitleIssue Date
7293410Internal combustion engine having an exhaust particulate filter
A control unit prevents overheating of a particulate filter in an exhaust path of an internal combustion engine during regeneration of the particulate filter if the regeneration deviates from prescribed conditions. Overheating is prevented using one of two engine op...
11/13/2007
7293404Control device for internal combustion engine
A device includes: downstream air-fuel ratio feedback control unit that performs feedback control of an upstream target air-fuel ratio so that a downstream air-fuel ratio detected by a downstream air-fuel ratio detecting unit coincides with a downstream target air-f...
11/13/2007
7294162Exhaust filter
An exhaust filter having a pleated filter media mounted between end caps is disclosed herein. The filter has a construction suitable for high temperature environments such as engine exhaust systems. ...
11/13/2007
7294313Device and method for producing ammonia from solid urea pellets
A device for producing ammonia from urea pellets includes a pellet dispensing device, a pellet accelerator, a pellet shooting channel, and an ammonia reactor having a chamber or zone for shooting in urea pellets and a pellet deflector arranged on an end of the shoot...
11/13/2007
7293407Method for operating a diesel engine
The invention relates to a method for operating a diesel engine in which an air ratio (λ) of the fuel which is to be burnt and of the combustion air supplied is set by a control unit (14) according to predetermined values. When a value (15) which is p...
11/13/2007
7293406Engine control for low emission vehicle starting
A method for rapidly heating an emission control device in an engine exhaust uses excess air added to the exhaust via an air introduction device. After an engine cold start, the engine is operated to raise exhaust manifold temperature to a first predetermined value ...
11/13/2007
7292930Attenuation of engine harshness during lean-to-rich transitions
Engine systems and methods for accomplishing regeneration of a NOx adsorber (28) using in-cylinder post-injection in a way that creates a lean-rich transition (FIG. 3) for regenerating the NOx adsorber while attenuating engine torque output fluctuation...
11/06/2007
7290504System and method for operating an internal combustion engine with hydrogen blended with conventional fossil fuels
A system for retrofitting an internal combustion engine to use a proportion of hydrogen gas and existing fossil fuel is disclosed. The system is comprised of a source of hydrogen gas and means for delivering hydrogen gas to the combustion chamber of the engine. The ...
11/06/2007
7292933Engine misfire detection
A method of detecting an engine malfunction such as a misfire includes determining engine speed values at each of a plurality of measurement angular positions, heterodyning the engine speed values with sine and cosine functions indexed in the angular domain, passing...
11/06/2007
7287371Device and method for internal combustion engine control
A method is described for operating an engine coupled to an upstream and downstream emission control device that stores and reacts oxidants such as NOx. The method transitions from lean to stoichiometric or rich operation under various conditions. The amount of fuel...
10/30/2007
7287370NOx-trap
A NOx-trap composition comprises: (a) at least one first NOx storage component comprising at least one alkali metal supported on at least one first support material; and (b) a platinum oxidation catalyst and at least one second NOx storage component not being an alk...
10/30/2007
7284369Secondary air supply system and fuel injection amount control apparatus using the same
A secondary air pipe is connected on the upstream side from catalyst in an exhaust pipe, and a secondary air pump is provided at an upstream portion of the secondary air pipe. An opening/closing valve for opening/closing the secondary air pipe is provided on the dow...
10/23/2007
7284365Electric heated catalyst failure diagnostic device
It is an object to provide an electric heated catalyst failure diagnostic device that is compact, lightweight, inexpensive, and can accurately detect a disconnection of the heater and an abnormality in a circuit from the power supply to the heater with a simple conf...
10/23/2007
7285153Method and equipment for feeding two gases into and out of a multi-channel monolithic structure
A method with associated equipment for feeding two gases into and out of a multi-channel monolithic structure. The two gases will normally be gases with different chemical and/or physical properties. The first gas and the second gas are fed by means of a manifold he...
10/23/2007
7285247Apparatus and method for operating a fuel reformer so as to purge soot therefrom
A method of operating a fuel reformer includes advancing a first air/fuel mixture having a first air-to-fuel ratio into the fuel reformer. The method further includes determining if a soot purge is to be performed and generating a purge-soot signal in response there...
10/23/2007
7284366System and method for operating an engine having an exhaust gas recirculation system
In an apparatus having an internal combustion engine, a compressor for compressing engine intake gases, a particulate filter for filtering particulate matter from engine exhaust, an exhaust gas recirculation (EGR) system for recirculating exhaust gases from a locati...
10/23/2007
7284368Computer device to control operation during catalyst desulfurization to preserve catalytic function
A system is described for improving engine and vehicle performance by considering the effects of exhaust conditions on catalyst particle growth. Specifically, engine operation is adjusted to reduce operating in such conditions, and a diagnostic routine is described ...
10/23/2007
7284367Control apparatus of internal combustion engine
The ignition timing is sustained at an initial value during a predetermined time beginning at a start of an engine, and is retarded after the predetermined time is elapsed to heat a catalyst at an early time. The predetermined time ends when the negative pressure of...
10/23/2007
7281523Fuel injector pump system with high pressure post injection
High pressure post injection using only one valve is accomplished by fluidly connecting the control valve (76) in a fuel injection pump system (50) to the upper nozzle chamber (70) of a fuel injector (60), and connecting the upper nozzle ...
10/16/2007
7281369Deterioration diagnosis of diesel particulate filter
A filter (14) traps particulate matter contained in the exhaust gas of a diesel engine (1). The filter (14) is regenerated by burning the trapped particulate matter through an operation to raise the exhaust gas temperature. An oxidation catalyst...
10/16/2007
7281368Nodischarge quantity estimation method for internal combustion engine
In an NOx discharge quantity estimation method for an internal combustion engine equipped with an EGR apparatus, the gas components (e.g., oxygen molecules and NOx) of intake gas taken into a combustion chamber are assumed to be uniformly distr...
10/16/2007
7278414Diagnostic tool for sensing oxygen sensor heater operation
A diagnostic testing system for a vehicle comprising an oxygen sensor having a heating element for heating the oxygen sensor to its minimum operational temperature, an analyzer having a user interface, a communications link between the analyzer and the vehicle to ob...
10/09/2007
7278259Apparatus for emissions control, system, and methods
Methods, constructions, and systems for treating engine emissions. An engine includes a crankcase, an air intake, a blow-by vent, and an exhaust port; the crankcase emits blow-by gases through the blow-by vent, and the engine produces an exhaust stream through the e...
10/09/2007
7278260Method for controlling an internal combustion engine for regenerating exhaust gas purifying means and device therefor
A method for controlling an internal combustion engine for regenerating an exhaust gas purifying mechanism arranged on an exhaust line of the engine during a phase of regeneration of the purifying mechanism. The method analyzes an exhaust gas composition solely down...
10/09/2007
7280906Method for detecting misfires of an internal combustion engine and device for carrying out the method
A method for detecting combustion misfires of an internal combustion engine and a device for carrying out the method, in which an evaluation of a lambda signal made available by at least one broadband lambda sensor is provided. The lambda signal is compared to a lam...
10/09/2007
7279022Spiraltrap: devices and methods for the trapping particulate matter in exhaust and of other pollutants
Embodiments of the present invention include methods and devices for trapping particulate matter suspended in exhaust from, for example, automotive diesel engines. Particulates carried in exhaust are actually a colloidal suspension of finely divided particulates in ...
10/09/2007
7275364Exhaust emission control device of internal combustion engine
The air/fuel ratio of exhaust flowing into a catalytic converter is forcibly modulated, between a lean air/fuel ratio leaner than a target average air/fuel ratio and a rich air/fuel ratio richer than the target average air/fuel ratio, with a specific period, a speci...
10/02/2007
7275365Method for controlling temperature in a diesel particulate filter during regeneration
Uncontrolled regeneration in a Diesel particulate filter is prevented by controlling the concentration and mass flowrate of oxygen passing through the Diesel particulate filter during regeneration. ...
10/02/2007
7276212Exhaust articles for internal combustion engines
Provided is a base metal undercoat containing catalyst and an exhaust article containing the catalyst. The catalyst contains a base metal undercoat with an oxygen storage component, and at least one catalytic layer. Also provided are methods for preparing the cataly...
10/02/2007
7275363Exhaust gas purifying apparatus and method for internal combustion engine
In exhaust gas purifying apparatus and method for an internal combustion engine, a degree of a performance deterioration of an NOx trap catalyst is determined on the basis of a detected air-fuel ratio variation time difference, at the performance deterioration deter...
10/02/2007
7276276Honeycomb structure producing method, and honeycomb structure
In a method for producing a honeycomb structure 20 which comprises disposing a material for forming outer wall 11 on the outer peripheral surface 3 of a cell structure 1 having a plurality of cells serving as fluid flowing channels to pro...
10/02/2007
7276295Metal foil with an embossed structure for use in the purification of exhaust gas and a tool and method for its production
The subject matter of the present invention relates to a metal foil with an embossed structure for use in the purification of exhaust gas as well as to a tool and a method for its production. In the direction of the main flow, the metal foil has alternating peaks wi...
10/02/2007
7277801Method for testing catalytic converter durability
The present application relates in general to methods for testing the performance of an automotive catalytic converter under conditions simulating those which occur in motor vehicles over extended driving conditions. ...
10/02/2007
7275366High thermal efficiency Selective Catalytic Reduction (SCR) system
An emissions control system utilizes otherwise wasted heat to efficiently reduce emissions in a main exhaust flow. Heat stored in exhaust from an auxiliary generator (i.e., auxiliary exhaust) may be used to convert urea to ammonia used by a Selective Catalytic Reduc...
10/02/2007
7272924Exhaust gas purification device of internal combustion engine
A catalyst (22) suitable for reduction of the NOx in an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow cont...
09/25/2007
7273514Apparatus and method for filtering particulate and NOx emissions
An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulat...
09/25/2007
7272926Exhaust emission control device for internal combustion engine
A DPF is used in an internal combustion engine for trapping PM discharged from an engine body. Presence and absence of an abnormality in the DPF is evaluated using differential pressure, which is between the front and the rear of the DPF. The differential pressure c...
09/25/2007
7273027Startup-time control apparatus and stop-time control apparatus of internal combustion engine, and control methods thereof, and record medium
If it is determined that the present engine startup is a high-temperature startup, immediately fuel injection in concert with start of cranking is prohibited. After a delay time elapses following the start of cranking, or when THC
09/25/2007
7272925NOreduction in lean burn engine exhaust
The nitric oxide (NO) and nitrogen dioxide (NO2) content of lean-burn engine exhaust is beneficially prepared for selective catalytic reduction (SCR) of these oxides to nitrogen by two sidestream additions to the exhaust. An ozone-containing air stream is...
09/25/2007
7273592Combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine
A combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine is provided. The exhaust gas post treatment within the muffler, which forms sulfuric acid, takes place in at least one exhaust gas post treatment/muff...
09/25/2007
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