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6912847 |
Diesel engine system comprising a soot filter and low temperature NOx trap
The invention provides low temperature NO 2 trap compositions useful for adsorbing NO 2 from a gas stream at lower temperatures, and releasing the NO 2 at higher temperatures. The low...
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6912848 |
Particulate filter aftertreatment of diesel engine exhaust
A system for aftertreatment of diesel engine exhaust on a vehicle which is equipped for dynamic braking, using the electrical power generated by the dynamic braking to energize a resistor bank...
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6912844 |
System and method for determining set point location for oxidant-based engine air/fuel control strategy
The invention relates to a new method and system for optimizing the efficiency of an automotive catalytic converter by adjusting the engine air/fuel ratio based on estimates of the actual amount of...
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6912841 |
Device and method for exhaust-gas treatment
A device and a method for treating the exhaust gas of an internal combustion engine are proposed, comprising an ozone reactor for supplying ozone to the exhaust gas at a delivery location ( 54 ),...
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6910329 |
System for controlling particulate filter temperature
A system for controlling the temperature of a particulate filter coupled to an exhaust outlet of an internal combustion engine includes a controller responsive to volumetric flow and temperature of...
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6907725 |
Method for reducing engine exhaust emissions
Exhaust gas temperature is increased to improve the effectiveness of an after-treatment system having an activation temperature by deactivating one or more engine cylinders to increase the exhaust...
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6904751 |
Engine control and catalyst monitoring with downstream exhaust gas sensors
A system and method for controlling an internal combustion engine for low emissions include an inner feedback control loop to control the engine fuel/air ratio with feedback provided by a first...
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6901742 |
Method for detecting the state of a catalytic converter system
A process for detecting a state of a catalyst system installed in an exhaust gas channel of an internal combustion engine of a motor vehicle, through which catalyst system exhaust gas from the...
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6901741 |
Diagnosis of deterioration in air/fuel ratio sensor
An air/fuel ratio sensor ( 4 ) and a three-way catalytic converter ( 3 A) having an oxygen storage function are provided in an exhaust passage ( 2 ) of an internal combustion engine ( 1 ). A...
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6901743 |
Exhaust gas purifying method, exhaust gas purifying apparatus, and exhaust gas collecting apparatus of internal combustion engine
An exhaust gas collecting apparatus, of an internal combustion engine including a collection vessel that can hold exhaust gas, an exhaust gas taking-out passage through which exhaust gas is...
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6901745 |
Method for operating a nitrogen oxide (nox) storage catalyst
The invention relates to a method for operating a nitrogen oxide (NOx) storage catalytic converter ( 12′ ). During a first operating phase of the storage catalytic converter ( 12′ ), nitrogen...
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6901747 |
Fuel injection control method for diesel engine and regenerative control method for exhaust gas after treatment device
The present invention concerns an diesel engine fuel injection control, and a regeneration control method of exhaust gas post-treatment apparatus using this fuel injection control, and the engine...
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6898930 |
Exhaust gas purification device
There is provided an exhaust gas purification device ( 22 ) comprising a substrate used for purifying components contained in an exhaust gas discharged from an engine. The substrate has partitions...
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6898928 |
Co-ordination of different requirements of the exhaust gas temperature and corresponding heating and cooling measures
A method for influencing the exhaust gas temperature of an internal combustion engine is described in which measures can be carried out for increasing, lowering and limiting exhaust gas...
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6895747 |
Diesel aftertreatment systems
A method and a system for improving conversion efficiency of a urea-based SCR catalyst coupled downstream of a diesel or other lean burn engine is presented. The system includes an electrically...
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6895746 |
Reducing oxides of nitrogen using hydrogen generated from engine fuel and exhaust
Either (a) the exhaust ( 20 ) of an engine ( 9 ) and/or (b) inlet air ( 11 ) is sent to a hydrogen generator ( 22 ) along with diesel fuel ( 18 ) to produce hydrogen and carbon monoxide ( 26 ) for...
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6895744 |
Operation method and operation control device of internal combustion engine for vehicle that temporarily stops engine
In an operation of an internal combustion engine for a vehicle in which an operation of the internal combustion engine is stopped by a control of a vehicle operation control device during a vehicle...
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6892530 |
Exhaust gas aftertreatment systems
A method for improving NOx conversion efficiency of a urea base SCR catalyst is presented. Since efficiency is reduced by the presence of hydrocarbons in the catalyst, the method proposes to...
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6892527 |
Catalyst deterioration suppressing apparatus and method
A catalyst deterioration suppressing apparatus and method stops supply of fuel when an engine is decelerating, and prohibits the supply of fuel from being stopped when the catalyst temperature is...
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6892531 |
System for and methods of operating diesel engines to reduce harmful exhaust emissions and to improve engine lubrication
A Diesel engine anti-wear lubricant oil additive composition that includes organo-metallic compounds of Cu, Ce, etc., is used to catalytically burn-off diesel particulate matter (PM) collected by...
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6889497 |
Method and controller for operating a nitrogen oxide (NOx) storage catalyst
A method for operating a nitrogen oxide (NOx) storage catalytic converter ( 12′ ) of an internal combustion engine ( 1 ) includes storing nitrogen oxides (NOx), which are generated by the engine...
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6886329 |
Exhaust emission control apparatus for internal combustion engine
There is provided an exhaust emission control apparatus for an internal combustion engine, which comprises a cylinder suspend operation control section that provides control to suspend combustion...
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6883305 |
Method for cleaning exhaust gas from an internal combustion engine
In a method and apparatus for removing nitrogen oxides from the exhaust gas of a lean-burn automobile, a CO adsorbent component, which may, for example be made of Pd, Ru or Ir, is contained in an...
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6883306 |
Emission treatment system and control method
An emission treatment system for a vehicle is provided that includes a plasma reactor is disposed in a main exhaust pipe and configured to reduce noxious emissions of an engine. A bypass pipe is...
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6883311 |
Compact dual leg NOx absorber catalyst device and system and method of using the same
An apparatus, a system, and a method for treating exhaust gases from an internal combustion engine. The system and method employing the use of a catalytic device coaxial-arranged dual leg apparatus...
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6883310 |
Internal combustion engine emission control apparatus and method
An internal combustion engine emission control apparatus includes split passages that divide exhaust gas discharged from an internal combustion engine into a plurality of streams. Emission control...
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6883309 |
Method and device for treatment of a gas flow
Method and apparatus for treating a gas flow including guiding the gas flow through a gas treatment unit ( 18 ) adapted for filtering particles in the gas flow, and eliminating the particles in the...
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6880329 |
Exhaust gas purifying system for internal combustion engines
A first oxygen sensor is mounted on an exhaust pipe. An ECU determines an electric power to be fed to a sensor heater, by a heater control quantity calculating block, in accordance with a...
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6880327 |
Arrangement and method for compressed air systems in vehicles
Method and arrangement for providing a compressed air system in a vehicle including a compressor ( 2 ) for generating compressed air and a connection ( 11 ) for feeding compressed air generated by...
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6880518 |
Method of controlling direct gasoline injection type internal combustion engine with turbocharger and direct gasoline injection type internal combustion engine with turbocharger
A first object of the invention is to reduce an exhaust gas in a lean burn area which is expanded by a supercharging, in a direct gasoline injection type internal combustion engine provided with a...
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6882928 |
Enhanced diagnosis of a multi-banked catalyst exhaust system
Methods and apparatus are provided for diagnosing emissions in a multi-banked catalyst emissions system for a motor vehicle. A method of diagnosing emissions in a multi-banked emissions system...
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6879906 |
Engine control and catalyst monitoring based on estimated catalyst gain
A system and method for controlling an internal combustion engine determine a catalyst gain based on an exhaust gas sensor positioned upstream relative to a catalyst and at least one exhaust gas...
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6877313 |
Particulate control
An improved system for treating the aftertreatment of exhaust gases, especially from diesel engines, comprises a first catalyst ( 20 ) effective to oxidise hydrocarbons, a second catalyst ( 22 )...
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6877311 |
Catalyst degradation determining apparatus and method
A catalyst degradation determining apparatus determines whether a catalyst provided in an exhaust passage of an internal combustion engine has degraded. The apparatus includes a controller. The...
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6874314 |
Vehicle with internal combustion engine, fuel cell and catalyst
A vehicle includes an internal combustion engine, a catalyst operatively associated with the internal combustion engine for processing exhaust gases of the internal combustion engine, and a fuel...
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6874312 |
Oxidant storage capacity estimation
A method for determining the efficiency of a three-way catalyst is presented. It is shown that more accurate results are achieved if the efficiency estimates are performed when the engine is at...
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6874313 |
Automotive catalyst oxygen storage capacity diagnostic
An engine exhaust system includes a catalytic converter. An inlet sensor senses a first oxygen level of exhaust gases entering the catalytic converter. An outlet sensor senses a second oxygen level...
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6871492 |
Process and system for controlling the mixture composition for a spark ignition Otto engine with an NOx storage catalyst during a regeneration phase
A process and a system are used for controlling the mixture composition for an Otto engine with an NO x storage catalyst during a regeneration phase. The process includes controlling, to the value...
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6873901 |
Method for operating an electronic controller of a motor vehicle
A method for operating an electronic controller of a motor vehicle, in particular of an engine controller, with which signal processing is carried out in order to control the operation of the motor...
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6871489 |
Thermal management of exhaust systems
The present invention involves thermal management of an integrated emission reduction system for the removal of particulate matter (PM) and nitrogen oxides (NOx) from diesel engine exhaust streams....
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6868669 |
Exhaust-emission purifying apparatus and method for internal combustion engine
An exhaust-emission purifying apparatus for an internal combustion engine, includes an NOx purifying catalyst disposed in an exhaust system of the engine to purify NOx in an exhaust emission of the...
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6868666 |
Method and apparatus for monitoring catalyst efficiency and outlet oxygen sensor performance
A vehicle exhaust system includes a catalytic converter and an outlet sensor. The outlet sensor generates a sensor signal based on an oxygen level of exhaust gases exiting the catalytic converter....
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6868667 |
Method for rapid catalyst heating
A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders...
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6865884 |
Operating method for an internal combustion engine which operates with an exhaust-gas aftertreatment system
In an operating method for internal combustion engines which operate with exhaust-gas aftertreatment systems, in particular diesel internal combustion engines, a plurality of operating programs are...
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6865881 |
System and method for reducing nitrogen oxides in combustion exhaust streams
A system and method for reducing nitrogen oxide emissions (NO x ) in the exhaust from a combustion device, such as a reciprocating engine, using a solution containing a NO x reducing agent which...
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6865885 |
Exhaust gas purifying method and apparatus for internal combustion engine
An exhaust gas purifying method for an internal combustion engine, including determining an amount of particulates in an exhaust gas which is accumulated in a particulate filter disposed within an...
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6862879 |
Diesel aftertreatment system
A method for improving NOx conversion efficiency of a lean exhaust gas aftertreatment device by determining an accurate amount of reductant required is presented. The method includes calculating a...
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6862881 |
Method and apparatus for controlling regeneration of a particulate filter
Apparatuses and methods for regenerating a particulate filter. A first temperature corresponding to a temperature of a catalyst that is thermally coupled with a particulate filter is determined. A...
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6862880 |
Method for operating a catalyst
A method for operating a catalytic converter arranged in the exhaust gas of an internal combustion engine. The composition of exhaust gas being controlled in front of the catalytic converter by...
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6865472 |
Vehicle-installed exhaust gas analyzing apparatus
A vehicle-installed exhaust gas analyzing apparatus includes a nondispersive infrared (NDIR) type gas analyzer for continuously measuring concentration of hydrocarbon (HC) in an exhaust gas flowing...
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