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7628007 |
Onboard diagnostics for anomalous cylinder behavior
Method and system of onboard diagnostics in engine emissions monitoring, particularly for detecting anomalous cylinder behavior. In some embodiments, at least one sensor in the exhaust path...
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7618255 |
Apparatus and method for catalytic combustion
A catalytic combustion apparatus is equipped with a reactor for catalytically burning a gas to be treated containing a combustible organic compound, which further comprises a condensate forming...
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7618605 |
Exhaust emission control device and method for internal combustion engine, and engine control unit
An exhaust emission control device for an internal combustion engine, which is capable of supplying a just enough amount of reducing agent to a NOx catalyst, thereby reducing exhaust emission and...
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7614392 |
Diagnostic method and control apparatus for gas sensor
A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the...
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7610753 |
Exhaust gas purification apparatus for internal combustion engine and method thereof
According to the present invention, there is disposed in an exhaust passage of an internal combustion engine a filter that traps particulate matter In an exhaust gas, and a catalyst with a...
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7610748 |
Mounting structure for an air-fuel ratio sensor in a motorcycle, and exhaust subassembly including same
A mounting structure is provided for an air-fuel ratio sensor on an exhaust pipe in a motorcycle in which a concentration of oxygen in an exhaust gas can be detected efficiently and accurately by...
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7603845 |
Method and device for managing the operation of a nitrogen oxide trap, and diagnosing its ageing condition
The invention concerns a method which consists in arranging a oxygen probe ( 21 ) of an exhaust pipe and observing that substantial unique increase of said representative signal towards a threshold...
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7603846 |
Method for operating an internal combustion engine and a device for carrying out the method
A method for operating an internal combustion engine whose exhaust area has at least one SCR catalytic converter and a device for carrying out the method are described. The SCR catalytic converter...
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7603847 |
Device and method for internal combustion engine control
A system for an engine is shown that includes an upstream emission control device and a downstream emission control device. The upstream device has a washcoat having a predetermined amount of...
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7596941 |
Air-fuel ratio control device for internal combustion engine
An air-fuel ratio control device for an internal combustion engine can detect the deteriorated purification state of a catalyst without delay after completion of rich or lean control, and can...
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7594392 |
System for controlling adsorber regeneration
A system, method, and software for regenerating an adsorber connected with a flow of exhaust from an engine. An open-loop control module for ramping up and maintaining a temperature value of an...
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7591986 |
Exhaust emission control device and method for internal combustion engine, and engine control unit
An exhaust emission control device which is capable of supplying a just enough amount of reducing agent to a NOx catalyst while causing the amount of reducing agent consumed in an upstream catalyst...
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7591132 |
Apparatus and method to inject a reductant into an exhaust gas feedstream
An exhaust aftertreatment system for an internal combustion engine is provided including an apparatus and method to inject a reductant into the exhaust gas feedstream. Included is a fuel metering...
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7587891 |
Method for regenerating NOx absorbing catalyst
A method for regenerating a NOx absorbing catalyst includes: detecting a NOx value by a NOx sensor and determining whether to perform a regeneration mode or not based on a comparison of the sensed...
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7587892 |
Apparatus, system, and method for adapting a filter regeneration profile
An apparatus, system, and method are disclosed for adapting a regeneration profile for a particulate filter. A controller's input module receives inputs relating to conditions of the filter or...
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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...
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7581535 |
Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an extended Kalman filter
The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the...
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7571601 |
Method and apparatus for controlling regeneration of simultaneous NOx-PM reduction device
The present invention provides a method for controlling regeneration of the simultaneous NOx-PM reduction apparatus having a lean NOx trap (LNT) for removing nitrogen oxide (NOx) an engine and a...
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7568337 |
Device for detecting state of thermal degradation of exhaust purifying catalyst
An electronic controller integrates a rate of progress dK of thermal degradation of exhaust purifying catalyst at every predetermined time period, to calculate degree of thermal degradation K of...
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7565799 |
Controlling lean NOx trap (LNT) catalyst performance
A method of using a lean NOx trap (LNT) catalyst to control vehicle engine emissions. While catalyst temperature is within a low range, the catalyst is allowed to store NOx until the catalyst is...
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7559193 |
Control apparatus and method for internal combustion engine
A control apparatus for an internal combustion engine has an oxygen storage volume computing unit for computing an oxygen storage volume of a catalyst by using a real air/fuel ratio detected by an...
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7559194 |
Method and device for controlling the injection of reducing agent
The invention relates to a method and device ( 10 ) for controlling the injection of reducing agent upstream from a catalyst ( 4 ) in an exhaust line ( 2 ) from a combustion engine. According to...
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7555895 |
Exhaust gas purifying apparatus and method for internal combustion engine
In exhaust gas purifying apparatus and method for an internal combustion engine, an abnormality determination of an NOx (Nitrogen Oxides) removing catalyst is executed on the basis of output values...
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7552586 |
Marine exhaust system with a downstream oxygen sensor located away from a water reversion liquid trajectory path
A marine engine exhaust system has an oxygen sensor located within a catalyst housing structure and downstream from a catalyst device. The oxygen sensor is located away from a reversion liquid...
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7549283 |
Engine system with mixed exhaust gas oxygen sensor types
In one example, a system for a vehicle traveling on the road is described. The system includes a first cylinder; a second cylinder; a linear exhaust gas sensor coupled exclusively to said first...
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7543443 |
Method for determining NOx reduction ratio in exhaust emission control device
When urea water U is injected by an addition nozzle 7 upstream of NO x reduction catalyst 6 incorporated in an exhaust passage 5 of a diesel engine 1 so as to reduce and purify NO x in...
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7536851 |
Catalyst condition monitor based on differential area under the oxygen sensors curve algorithm
A control system and method of monitoring a condition of a catalyst in a catalytic converter includes commanding a first air/fuel ratio. A first signal is monitored from a first oxygen sensor and a...
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7533519 |
Three sensor comparison rationality test
Testing of temperature sensors ( 28, 30, 32 ) in an emission control system, such as in an exhaust system ( 10 ) of a diesel engine, serves to condition further component and/or system testing by...
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7530220 |
Control strategy for reducing fuel consumption penalty due to NOx adsorber regeneration
A method for enabling initiation of regeneration of a NOx adsorber catalyst. While the engine is operating to propel the vehicle, data indicative of NOx adsorption efficiency of the NOx adsorber...
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7526914 |
Heater control device for gas sensor
An oxygen concentration sensor including the sensor element for detecting oxygen concentration in the exhaust gas and the heater for heating the sensor element is installed at the location...
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7520274 |
Air fuel ratio sensor deterioration determination system for compression ignition internal combustion engine
In a compression ignition internal combustion engine provided with an NOx storage-reduction catalyst on an exhaust system, when the air fuel ratio of the exhaust gas being in a lean state is...
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7513105 |
Exhaust gas purifying system and abnormality determining method therefor
An exhaust gas purifying system includes a catalyst arranged on an exhaust pipe of an internal combustion engine; a sensor detecting a state of the exhaust gas passed through the catalyst; and an...
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7500358 |
Apparatus, system, and method for enhancing soot filter protection
An apparatus, system, and method are disclosed for enhancing protection of a soot filter. The method enhances soot filter protection by interpreting a baseline regeneration scheme, estimating...
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7499789 |
Deterioration signal generation device for gas sensor
A deterioration signal generation device for a gas sensor for simulating a deterioration signal output by a gas sensor in a deteriorated state, the gas sensor detecting the fuel-air ratio of...
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7490463 |
Process and system for removing soot from particulate filters of vehicle exhaust systems
A motor vehicle exhaust aftertreatment system includes an exhaust conduit that includes a NO x adsorber, a particulate filter, a reformer for generating reformate containing hydrogen and carbon...
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7478528 |
Oxygen based particulate filter regeneration strategy
A particulate filter regeneration method for an internal combustion engine system is provided. The method includes: receiving an outlet temperature signal corresponding to a temperature at an...
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7475536 |
Exhaust gas purifying apparatus for internal combustion engine
An exhaust gas purifying apparatus for an internal combustion engine having an exhaust system. The apparatus includes a NOx purifying device provided in the exhaust system. This device removes NOx...
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7474956 |
Air-fuel ratio control system of internal combustion engine
An air-fuel ratio control system maintaining constant an oxygen storage amount or oxygen release amount per unit time with respect to an exhaust purification catalyst having an oxygen storage...
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7472697 |
Air-fuel ratio control apparatus
An air-fuel ratio control apparatus is applied to an internal combustion engine including a variable lift mechanism which changes a lift amount of an intake valve. An oxygen sensor, which outputs a...
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7469530 |
Fuel cut control apparatus of internal combustion engine
The exhaust gas purifying catalysts sometimes generate H 2 S which emits exhaust odor under reducing atmosphere. However, in the ordinary air-fuel ratio control, it takes much time to establish...
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7469531 |
Method and apparatus to control injection of a reductant into an exhaust gas feedstream
A method and apparatus to control injection of a reductant into the exhaust gas feedstream of an internal combustion engine adapted to operate in a lean air/fuel ratio region upstream of a...
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7469177 |
Distributed control architecture for powertrains
Systems and methods for controlling automotive powertrains using a distributed control architecture are disclosed. A distributed control system may include a supervisory control unit for...
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7464540 |
Ammonia producing engine utilizing oxygen separation
A power system is provided having a power source, a first power source section with a first intake passage and a first exhaust passage, a second power source section with a second intake passage...
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7458205 |
Method for operating an internal combustion engine and device for implementing the method
A method for operating an internal combustion engine, in whose exhaust region, in the direction of flow of the exhaust gas, there are situated a first broadband lambda sensor which makes available...
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7454901 |
Exhaust system, and engine device and vehicle with the same
In an exhaust system, a first oxygen sensor is attached to an exhaust pipe connected to a standard cylinder in which the amount of injected fuel is the closest to the average of the amounts of fuel...
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7448201 |
Honeycomb body and method for treating a fluid
A honeycomb body, in particular for aftertreatment of exhaust gas from an internal combustion engine, includes an inlet surface, an outlet surface and a honeycomb structure through which a fluid...
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7444235 |
Post catalyst oxygen sensor diagnostic
An engine exhaust sensor diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor includes a first module that calculates a total integrated area based on a...
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7434386 |
System for monitoring exhaust gas concentrations
A system is provided for monitoring exhaust gas concentrations in an exhaust stream from an engine. The system may include the exhaust system configured to carry an exhaust stream generated by the...
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7430854 |
Air fuel ratio controller for internal combustion engine for stopping calculation of model parameters when engine is in lean operation
An air fuel ratio controller for an internal combustion engine includes an exhaust gas sensor, an identifier and a control unit. The exhaust gas sensor detects oxygen concentration of exhaust gas....
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7430853 |
Apparatus for evaluating deterioration condition of catalyst of internal combustion engine
To provide an apparatus for evaluating the deterioration condition of a catalyst of an internal combustion engine that can improve the accuracy of an evaluation of the deterioration condition of a...
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