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WO/2013/010703A1 |
In a method for determining the particle count in the exhaust gas of internal combustion engines, a characteristic variable for the quantity of particles is determined, for example in the form of the blackening of a filter or the determi...
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WO/2013/007355A1 |
In a four-way catalyst for use in connection with an Otto engine, the function of a particulate filter is combined with that of a three-way catalyst (3) (having in particular an oxygen reservoir (4)). In order to check the capacity for s...
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WO/2013/004755A1 |
The invention relates to a device (18) for monitoring a urea solution (14) in a tank (12) of a motor vehicle (10). Said device includes a light source (24) suitable for emitting a light beam, a photodetector (26) configured to detect a p...
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WO/2013/003162A1 |
A gas monitoring system (12) is disclosed. The gas monitoring system may have a first electrode (28) in fluid communication with a first gas and a second gas, and a second electrode (26) spaced apart from the first electrode to contain t...
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WO/2012/175661A1 |
The present invention relates to a method for determining the quantity of reducing agent in a tank (10) of a system intended to reduce the amount of NOx in the exhaust gases of a motor vehicle. The system comprises: a storage material (1...
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WO/2012/172202A1 |
The invention relates to a method for detecting a change of reducing agent canister in an SCR system (10) comprising a plurality of canisters (12) and pipes (14) connecting the canisters to an injector, characterized in that the method i...
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WO/2011/107686A9 |
The invention relates to a method for detecting the defective operation of a particulate filter of a pollution control system of a heat engine, said particulate filter being impregnated with a catalyst enabling the reduction of nitrogen ...
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WO/2012/159934A1 |
Storage vessel for a liquid having an arrangement for measuring the electric conductivity of the liquid which is situated in the vessel, wherein the arrangement has a first contact and a second contact which are wetted by the liquid and ...
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WO/2012/159815A1 |
The invention relates to a device for measuring the quality of an operating substance and/or auxiliary substance (12), in particular a reduction means, stored in a tank (10), wherein a reference container (20) is connected to the operati...
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WO/2012/160009A1 |
An SCR system has a urea solution supply and an ultrasound-based urea concentration sensor, the measurement signal of which is representative for a propagation time of an ultrasonic pulse along a predetermined path length in a fluid of t...
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WO/2012/154491A1 |
A diagnostic test for a secondary air system comprising an air pump, a first mass air flow sensor connected to the air pump and a first check valve connected to the first mass air flow sensor. A first testing phase is disclosed comprisin...
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WO/2012/151442A1 |
A method includes providing: a selective catalytic reduction (SCR) catalyst disposed in an exhaust gas stream of an internal combustion engine, a reagent injector operationally coupled to the exhaust gas stream at a position upstream of ...
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WO/2012/144949A1 |
The invention relates to a method for determination of remaining volumes of liquid reducing agent in a container pertaining to an SCR system for exhaust cleaning. The method comprises the steps of continuously determining remaining volum...
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WO/2012/144945A1 |
The invention relates to a method pertaining to an SCR system for exhaust cleaning which comprises a container (205), to accommodate a reducing agent, and a dosing unit (250). The method comprises the steps of - continuously detecting (S...
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WO/2012/143633A1 |
The invention relates to a method for validating the detection of a change of nitrogen oxide reducing agent cannister (12) in an SCR system (10) comprising a plurality of cannisters (12) and piping (14) connecting the cannisters to an in...
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WO/2012/139608A1 |
The invention relates to a method for operating a lambda probe (10), wherein in a first operating mode the resistance of a Nernst cell (12) of the lambda probe (10) is measured and the temperature of the lambda probe (10) is determined o...
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WO/2012/125776A2 |
A particle mass filter system and method of analyzing particulate mass emissions from an emission source includes at least one filter holder that is adapted to hold at least one particle filter of a particular surface area in order to co...
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WO/2012/125152A1 |
A method and system directed to reductant dosing control for an emissions system on a motorized vehicle, is disclosed. Both system and method begin with the storing of reductant on the vehicle. Data about the vehicle and the reductant st...
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WO/2012/125725A1 |
An improved apparatus for sensing exhaust emissions (15) comprising a passive induction sampler (50) configured to sample exhaust from a source (16), a processing unit (30) connected to the induction sampler and configured to be mounted ...
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WO/2012/118430A1 |
Method for fault detection in an exhaust system (3). By analysis of the temperature increase in the exhaust gases which is generated by fuel injected by a fuel injection device (20) upstream of a fuel oxidation device (5), and by analysi...
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WO/2012/118429A1 |
Method for fault detection in an exhaust system (3). By analysis of the temperature increase in the exhaust gases which is generated by fuel injected by a fuel injection device (20) upstream of a fuel oxidation device (5), and by analysi...
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WO/2012/110210A1 |
In a method for the model-based determination of the temperature distribution of a post-treatment unit for exhaust gas, steady-state and non-steady-state operating states are differentiated by taking into account the axial and radial tem...
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WO/2012/108795A1 |
A method of calibration of at least one fuel injector for a fuel burner in an exhaust gas treatment system for an internal combustion engine is therefore suggested. The inventive method is adapted for an exhaust gas system having said fu...
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WO/2012/108809A1 |
A method of calibration of at least one fuel injector for a fuel burner in an exhaust gas treatment system for an internal combustion engine is therefore suggested. The inventive method is adapted for an exhaust gas system having said fu...
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WO/2012/105890A1 |
The present invention relates to a method pertaining to regeneration of a particle filter (202) in a post-treatment system (200), which particle filter (202) is intended to treat an exhaust flow arising from combustion in a combustion en...
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WO/2012/102664A1 |
Exhaust post-treatment system for a combustion engine, comprising an exhaust post-treatment device (10), e.g. in the form of a catalyst or a filter; a sensor (22) adapted to determining a measurement signal for the magnitude of a paramet...
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WO/2012/102666A1 |
Exhaust post-treatment system (4) for a combustion engine (2), comprising a selective catalytic reduction catalyst (SCR catalyst) (10); an NOx sensor (22) adapted to determining the content of nitrogen oxides (NOx) in exhaust gases which...
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WO/2012/096513A2 |
Disclosed is a mounting structure for a differential pressure sensor of a exhaust gas after-treatment device for a diesel engine. The mounting structure for a differential pressure sensor according to an embodiment of the present inventi...
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WO/2012/096675A1 |
According to one embodiment, a sensor module (100) includes a sensor probe (120) that has at least two arms (122) coupled together at a central location (186) with each of the at least two arms extending radially outwardly away from the ...
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WO/2012/092974A1 |
A method of operating an internal combustion engine is proposed, the engine comprising an exhaust system with a DOC and a DPF and, downstream thereof a SCR catalyst. The ECU is configured to allow operation in at least one of a normal mo...
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WO/2012/088426A2 |
The present disclosure provides a method and apparatus for measuring ash deposit levels in a particulate filter (10) comprising at least one cell. One or more indicator components is inserted into the at least one cell so as to lie upon ...
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WO/2012/080000A1 |
The invention relates to a method for carrying out a zero point adaptation of a lambda probe (16) in an exhaust gas discharge section (4) of an internal combustion engine (2), wherein fresh air is pumped, during an after-run period follo...
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WO/2012/080046A1 |
An internal combustion engine has an exhaust gas sensor arranged in an exhaust gas system of the internal combustion engine upstream of or in an exhaust gas catalytic converter, the measurement signal of said exhaust gas sensor being cha...
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WO/2012/080336A1 |
The invention relates to a sensor device (100) comprising a support substrate (10) which comprises a particle measuring structure (P), a heating element structure (H) and a temperature measuring structure (T). Said temperature measuring ...
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WO/2012/072566A1 |
The invention relates to a method for determining the NH3 loading of an SCR catalytic converter in the exhaust-gas section of an internal combustion engine, wherein the NH3 concentration in the exhaust gas is determined by way of at leas...
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WO/2012/067566A1 |
The invention relates to an arrangement and a method for a dosing system for supply of a reducing agent in the exhaust flow from a combustion device such as a combustion engine. More specifically, the invention relates to how to identify...
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WO/2012/047484A2 |
An exhaust system (18) for use with a combustion engine (12) is disclosed. The exhaust system may have an exhaust passage (26), a reduction catalyst (32) disposed within the exhaust passage, and an injection device (34) configured to inj...
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WO/2012/048308A2 |
Techniques and devices are disclosed for detecting particle composition. In one aspect, a method performed by a detector to detect particles includes receiving particles at an aerosol inlet of the detector. The method includes carrying t...
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WO/2012/045599A1 |
A method for adjusting a temperature of a sensor element (118), which can be heated using a heating apparatus (124) and is intended to detect at least one property of a gas in a measurement gas space (112), is proposed. The method involv...
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WO/2012/038627A1 |
The invention relates to a procedure (1) for estimating the current loading (MC) of a filter, consisting especially in identifying an engine operating mode corresponding to an operating phase of the particulate filter, especially when th...
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WO/2012/038894A1 |
A method of inspecting a ceramic wall-flow filter (1) for a vehicle exhaust system includes the steps of: a) providing a source (9) of heat energy suitable for heating material within the filter (1); b) applying heat energy from the sour...
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WO/2012/030279A1 |
The present invention relates to a method and a system for estimation of a soot load in a particle filter in an exhaust cleaning system, which estimation involves using a pressure drop across said particle filter in order to determine sa...
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WO/2012/030278A1 |
The present invention relates to a method and a system for estimation of an ash level in a particle filter in an exhaust cleaning system, whereby - a partial regeneration of said particle filter is effected when a soot load of said parti...
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WO/2012/022687A1 |
The invention relates to a method for operating a water gas treatment device (1) comprising at least one store (11) for a reducing agent and at least one supply device (4) for a reducing agent. Said method consists of at least the follow...
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WO/2012/021103A1 |
The present invention relates to an arrangement for controlling the injection of a reducing agent in an exhaust line of a combustion engine (1). The arrangement comprises an injection system (8-12) adapted to injecting the reducing agent...
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WO/2012/002962A1 |
A control system for an engine having an in-cylinder pressure sensor and a selective catalytic reduction device comprises an electronic control module and an in-cylinder pressure sensor. The electronic control module has a processor and ...
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WO/2011/162703A1 |
The invention relates to a method pertaining to an HC dosing system in which fuel in liquid form is supplied to a feed device (230) via which fuel is supplied to at least one consumption point (250) from a container (205), comprising the...
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WO/2011/162701A1 |
The invention relates to a method pertaining to an HC dosing system for cleaning of exhaust gases from an engine (150), comprising a dosing unit situated in thermal contact with the engine's exhaust system (250) and intended to supply a ...
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WO/2011/161175A1 |
Method for detecting whether an injector with a valve controlled by a PWM signal of an SCR system is clogged, said system comprising a rotary positive- displacement pump driven by a motor and the pressure of which is controlled by a cont...
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WO/2011/162700A1 |
The invention relates to a method pertaining to an SCR system for cleaning of exhaust gases from an engine (150), comprising a dosing unit (250) situated in thermal contact with the engine's exhaust system and intended to supply a reduci...
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