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9027325 Exhaust purification device of internal combustion engine  
An ambient NOx adsorption catalyst that can adsorb NOx contained in an exhaust gas in the presence of CO under standard conditions is placed in an engine exhaust gas passage, in an internal...
9016044 IC engine and method for operating an IC engine  
A method is provided for operating an internal combustion engine of a motor vehicle. The method includes, but is not limited to storing exhaust gas while the engine is working, and supplying the...
9010088 Working machine  
A load application means, which applies a load to an engine such that a temperature of exhaust gas is raised to a temperature required to burn particulate matter, is comprised of an electric load...
8997457 Catalyst heating with exhaust back-pressure  
Embodiments for controlling an exhaust back-pressure valve are provided. In one example, a method for operating an engine comprises closing an exhaust back-pressure valve in response to a...
8997456 Compression ignition engine with low load rapid warm up strategy  
An electronically controlled compression ignition engine includes an electronic engine controller in control communication with fuel injectors, a high pressure exhaust recirculation system and a...
8943800 Air-fuel ratio control apparatus  
When an internal combustion engine (1) is determined to be in a low-temperature start state (an affirmative determination is made in S120), an air-fuel ratio control apparatus (10) controls the...
8943814 Warm-up system for exhaust system of internal combustion engine  
A warm-up system for an exhaust system of an internal combustion engine includes an electronic control unit that performs warm-up control for warming up an exhaust system component upon start-up...
8904767 Method and apparatus for cold starting an internal combustion engine  
The present invention relates to a method for achieving reduced emissions at cold start of an internal combustion engine having an exhaust gas after treatment system comprising at least one Diesel...
8904755 Heater control device of oxygen concentration sensor  
A heater control device of an oxygen concentration sensor is provided in which even in a case where an internal combustion engine is automatically stopped by idle stop control after cold start-up,...
8881504 System for providing power to an electrically heated catalyst  
An exhaust gas treatment system for an internal combustion engine is provided. The exhaust gas system includes an exhaust gas conduit, a generator, a vehicle electrical system, a primary energy...
8875487 Exhaust purifying system for hybrid vehicle and control method therefor  
An exhaust purifying system includes: a catalytic device supplied with electric power from a power supply unit; a first connecting unit connecting one end of the catalytic device to a negative...
8863506 Optimized electrically heated exhaust gas treatment system  
A method of sizing a light-off core supporting a fixed quantity of a light-off catalyst for an exhaust gas treatment system having an electric heater upstream of the light-off catalyst for heating...
8857152 System and method for unloading hydrocarbon emissions from an exhaust after-treatment device  
A method unloads hydrocarbon emissions deposited by an exhaust gas on an after-treatment device that is employed in an exhaust system for an internal combustion engine. The method includes...
8833058 Variable valvetrain turbocharged engine  
Embodiments for routing exhaust in an engine are provided. In one example, an engine method comprises, during a first condition, firing a subset of cylinders and routing all exhaust from the...
8820049 Method to reduce engine emissions for an engine capable of multi-stroke operation and having a catalyst  
A method to control valves in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve engine emissions as operating conditions vary.
8776500 System and method for hydrocarbon adsorber regeneration in a hybrid vehicle  
A control system for a hybrid vehicle is presented. The control system can include an air/fuel ratio control module that selectively commands a rich air/fuel ratio upon starting an engine based on...
8776495 Exhaust gas aftertreatment system and method of operation  
An exhaust gas after treatment system for an internal combustion engine comprises an oxidation catalyst device having a first substrate, a heater, and a second substrate disposed serially between...
8776496 Hydrocarbon retaining system configuration for combustion engine  
Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold....
8769932 Cold start NO2 generation system  
A cold start NO2 generation system includes a catalyst control module that identifies a portion of a three-way catalyst that corresponds to a nitrogen dioxide zone. A diagnostic module determines...
8764607 Fuel type based start-stop catalyst heating systems  
A start-stop system includes a fuel type module that determines a fuel type of a fuel supplied to an engine. A threshold module determines a first threshold based on the fuel type. A temperature...
8763366 Method for operating an internal combustion engine  
In a method for operating an air-compressing fuel-injection internal combustion engine having an exhaust gas post-treatment system with a particle filter and a nitrogen oxide reduction catalytic...
8756916 Hydraulic driving device for working machine  
A hydraulic driving device for a working machine surely prevents behavior of a single rod double acting cylinder not intended by an operator when discharge pressure of a main pump is raised to...
8728422 System intended to reduce the amount of NOx in the exhaust gases of a motor vehicle  
System to reduce the amount of NOx in exhaust gases of a vehicle. The system includes a storage space 1 containing an agent, a SCR catalytic converter 5, an injection module 6c to inject the agent...
8707683 Hydrocarbon retaining and purging system  
Methods and systems are provided for operating an engine having a hydrocarbon retaining system and an emission control device coupled to an engine exhaust, the engine exhaust comprising a venturi....
8701388 Exhaust treatment methods and systems  
A method of controlling an exhaust treatment system, comprising: selectively determining a first control state from a plurality of control states based on an exhaust temperature and a plurality of...
8689541 Valvetrain control method and apparatus for conserving combustion heat  
An engine control system includes a catalyst module and a cylinder module. The catalyst module determines a catalyst temperature. The cylinder module selectively switches operation of a first...
8683781 Method for controlling an exhaust-gas aftertreatment device of a hybrid drive, and hybrid drive  
A method for controlling an exhaust gas aftertreatment device of a vehicle hybrid drive is provided. The method comprises operating the hybrid drive only by a combustion engine, only by a...
8667782 Exhaust gas purifying apparatus for internal combustion engine  
An exhaust gas purifying apparatus for an internal combustion engine is provided. A selective reduction catalyst is disposed in an exhaust passage of the engine for reducing NOx in exhaust gases...
8646252 Preventing catalyst damage during misfire event  
A control system includes a temperature determination module and a catalyst protection module. The temperature determination module determines a temperature of exhaust gas based on a resistance of...
8635862 Control system for reducing nitrous oxide (“N2O”) after selective catalytic reduction (“SCR”) device light-off  
An exhaust gas treatment system for an internal combustion engine is provided having an exhaust gas conduit, an oxidation catalyst (“OC”) device, a selective catalytic reduction (“SCR”) device,...
8631641 Control device for vehicle  
In a vehicle having mounted therein an engine including an injector that directly injects fuel into a cylinder, in the case in which a warm-up control required condition is established, catalyst...
8621844 System and method for controlling fuel delivery based on output from a post-catalyst oxygen sensor during catalyst light-off  
A system includes a voltage determination module and a fuel control module. The voltage determination module determines a first output voltage of a first oxygen sensor position upstream from a...
8621843 Composition and method for reducing NOx emissions from diesel engines at minimum fuel consumption  
A diesel fuel composition is disclosed, as well as a method for reducing NOx emissions from a diesel engine at minimum fuel consumption wherein the diesel engine operates in a low temperature...
8607545 Air-fuel ratio control device  
An air-fuel ratio control device is provided for controlling the air-fuel ratio of an engine. The device includes an exhaust passage having a main catalytic converter and a bypass passage having a...
8596048 Method for operating an exhaust gas purification device having a heating apparatus and motor vehicle having the device  
A method for operating a device for the purification of exhaust gas of an internal combustion engine which is operated with an excess of air includes heating at least one heating apparatus of the...
8555615 Internal combustion engine exhaust gas control system and control method of internal combustion engine exhaust gas control system  
In a control method of an internal combustion engine exhaust gas control system which is applied to a hybrid vehicle that is powered by an internal combustion engine and an electric motor, an...
8544258 Exhaust treatment system diagnostic via ammonium nitrite decomposition  
A method of monitoring operation of an exhaust treatment system of a diesel engine includes injecting a dosing agent into an exhaust and monitoring the operating conditions of an engine during...
8534052 Exhaust gas treatment apparatus for working machine  
An exhaust gas treatment apparatus for a working machine is provided to reliably prevent a specific process that raises the exhaust temperature of an exhaust gas treatment section from being...
8534050 Exhaust gas aftertreatment system for a diesel engine and method of increasing a temperature of an SCR catalyst to reduce NOx in exhaust gases  
An exhaust gas aftertreatment system for a diesel engine is provided. The system includes a controller operably coupled to the engine that induces the engine to combust a rich air/fuel mixture in...
8511066 Multi-stage turbocharging system with thermal bypass  
A two-stage turbocharging system with a high pressure (HP) turbine and a low pressure (LP) turbine, exhaust piping connecting an engine to the HP turbine inlet, exhaust piping connecting the HP...
8499547 Hybrid vehicle and control method thereof  
Upon a system startup, a hybrid vehicle 20 determines whether a catalyst warm up operation of an engine 22 is to be executed or not based on a catalyst bed temperature Tcat of an exhaust gas...
8499546 Methods for reducing engine exhaust emissions  
A method for controlling an internal combustion engine wherein, during an initial, relatively low temperature operating phase of the engine, the engine operates with a modulated air/fuel ratio...
8490387 Method for improving the light-off or regeneration behavior of an aftertreatment device in a vehicle system  
The process of active DPF regeneration requires that the DPF be brought to regeneration temperatures in excess of 550° C. to 600° C. for a period of time sufficient to accomplish soot burnoff in...
8468801 Method and system for warming up catalytic converter for cleaning up exhaust gas  
A warming-up system performing a catalytic converter warming-up method has an electric motor (1m) enabling a turbocharger (1) to increase the amount of air supplied to an internal combustion...
8468808 Optimization of active regeneration triggers based on ambient and vehicle operating conditions  
A method of controlling the regeneration of a particulate filter includes defining a regeneration trigger limit for at least one operating parameter of the vehicle, modifying the regeneration...
8459007 Control system for cold start emissions reduction in hybrid vehicles  
A method comprises modifying combustion parameters of an engine of a hybrid vehicle to provide an engine power level insufficient to maintain crankshaft rotation at a desired speed including...
8448422 Engine starting control for engine with hydrocarbon retaining system  
Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold....
8443588 Control apparatus for internal combustion engine  
There is provided a control apparatus for an internal combustion engine, which can favorably reduce a load necessary for cranking at the time of the next start, while preventing the fresh air...
8438837 Control of an exhaust gas aftertreatment device in a hybrid vehicle  
The present invention involves a method for maintaining temperature in an exhaust gas treatment device for an internal combustion engine in a hybrid vehicle. The engine has a crankshaft and at...
8429897 Method for operating an internal combustion engine  
In a method for operating an air-compressing fuel-injection internal combustion engine having an exhaust gas post-treatment system with a particle filter and a nitrogen oxide reduction catalytic...