| Document |
Document Title |
|
WO/1995/016109A1 |
In a new process for checking and regulating the air-fuel ratio in motor vehicles, a known process is used for determining the air factor lambda from the oxygen partial pressure of the exhaust fumes that are largely brought into total ch...
|
|
WO/1995/012752A1 |
The present invention relates to a technique for estimating in a simple and accurate fashion the temperature of an exhaust emissions purifying catalyst provided on an engine of a vehicle. To be specific, assuming that the temperature Tws...
|
|
WO/1994/028292A1 |
A process for checking the effectiveness of a catalyst uses an oxygen probe arranged uptstream of the catalyst and an oxygen probe arranged downstream of the catalyst. The ratio between the times when the oxygen probes downstream and ups...
|
|
WO/1994/021902A1 |
A process for monitoring the operation of a catalytic converter (3) for exhaust gas purification having a supporting structure (4) and an adhesive catalytically active coating on the supporting structure (4), fitted downstream of the int...
|
|
WO/1994/021901A1 |
The invention relates particularly to the checking of the conversion of a precatalyst in internal combustion engines in which the check is performed in the coasting of the motor vehicle with a sufficiently long idling phase and in which ...
|
|
WO/1994/020737A1 |
A heated catalytic converter (1) is arranged upstream from a trifunctional catalytic converter (2) in an exhaust gas outlet (3). A computer (7) includes a unit for the closed loop control of the air/fuel mixture supplied to the engine, a...
|
|
WO/1994/020738A1 |
A method of determining the efficiency of a vehicle catalytic converter is described which comprises the steps of perturbing the fuelling of the engine to increase the hydrocarbon and carbon monoxide content of the exhaust gases, adding ...
|
|
WO/1994/017291A1 |
An exhaust gas cleaning device for an internal combustion engine comprising an NOx absorbing agent (18) disposed in the exhaust passage of the internal combustion engine for absorbing NOx when the air-fuel ratio of exhaust gas flowing th...
|
|
WO/1994/016205A1 |
An exhaust filter backpressure indicator (10) includes a sensor (12) for measuring the backpressure of the exhaust system. The sensor sends a signal which is processed for indicating that an exhaust filter element is filled. The indicato...
|
|
WO/1994/011622A1 |
A catalytic converter is provided incorporating an elongate temperature sensor (8) in contact with the catalyst block (4) at several points along its length. Such a sensor (8) has the ability to detect either uniform temperatures of the ...
|
|
WO/1994/009266A1 |
A sensor arrangement monitors the conversion rate of an exhaust gas catalyst (1) arranged in the tail-pipe (6) of an internal combustion engine (16). The sensor arrangement has two element pairs composed each of an infrared radiation ele...
|
|
WO/1994/004800A1 |
Process for analysing the state of at least a partial volume (K1, K2, K3, K4) of a catalytic converter (K) through which a gas mixture flows, in which during a change in the chemical and/or physical properties of the gas mixture a temper...
|
|
WO/1993/020340A2 |
The methods described for assessing the operatability of a catalytic converter fitted in the exhaust of an internal-combustion engine make use of the fact that the conversion-onset temperature for a catalytic converter is higher the olde...
|
|
WO/1993/014305A1 |
The description relates to a process for monitoring a catalytic exhaust gas purifying system of an internal combustion engine, especially for motor vehicles, which makes it possible separately to monitor a pre-catalyser (1) belonging to ...
|
|
WO/1993/009335A1 |
According to the invention, a) an oxygen probe (13) whose output signal switches between two levels, is arranged in the gas flow leaving the catalytic converter (11), b) during regulation and at a stabilised speed, the injection time sui...
|
|
WO/1993/005388A1 |
In an apparatus for detecting the accumulation of particulate material on a filter medium formed of dielectric material and disposed in a chamber, the apparatus being operable for generating and transmitting an RF signal through the filt...
|
|
WO/1993/005284A1 |
A temperature measurement and/or heating device has at least a mostly tight-fitting top layer (41) and bottom layer (42) composed of similarly structured, in particular corrugated, metal foils. A temperature probe (45, 46, 47) or heat co...
|
|
WO/1993/003358A1 |
A method of monitoring, while on board an automotive vehicle, one or more of catalyst performance, engine misfire, and combustion quality, the vehicle having an internal combustion engine (13) equipped with a catalyst (21) for converting...
|
|
WO/1993/003357A1 |
An exhaust gas oxygen sensor comprising: (a) a solid electrolyte oxygen diffusion conductor (91) divided to form separate electrically insulated portions, one side of both portions being exposed to ambient air and the other side of both ...
|
|
WO/1993/002280A1 |
An on-board catalytic converter efficiency monitoring system uses an exhaust gas oxygen sensor (6) downstream of a converter (3) to enable closed loop air-fuel ratio control. The period of the air-fuel limit cycle is used to determine a ...
|
|
WO/1992/010653A1 |
The invention concerns a method of determining the location of the reaction zone (1) in the interior (3) of a catalytic converter (2) through which a fluid flows which contains components which can react by an exothermic catalysed reacti...
|
|
WO/1992/003642A1 |
In a process for monitoring of the catalytic activity of a catalyst in the exhaust gas system of an internal combustion engine (3), a measured value of is temperature derived from signals generated by at least two temperatures probes (4,...
|
|
WO/1992/003643A1 |
In a process for monitoring the function of a catalytic converter (1) through which a catalysable fluid, in particular an exhaust gas of an internal combustion engine (3), flows along a direction of flow from an inlet side (12) to an out...
|
|
WO/1992/002807A1 |
A method of detecting the accumulation of particulate material collected on a filter medium formed of dielectric material in a chamber having the property of a microwave waveguide or transmission line comprises the steps of exciting the ...
|
|
WO/1992/000446A1 |
The description relates to a process for protecting catalysts used for cleaning exhaust gases by temperature measurement using a heat tone sensor which is specially suitable for implementing the process, in which behind the catalyst in t...
|
|
WO/1991/014856A1 |
In a process for controlling an internal combustion engine (1) with an engine control system (2) which obtains and processes a plurality of measurement values through measurement lines (3), converts them to control data for the operation...
|
|
WO/1991/014855A1 |
In a process for monitoring the performance of a catalyst (8) for exhaust gases of an internal combustion engine (1) with an exhaust gas system (5, 8, 9), the temperature of two spatially separate cross-sectional regions in the exhaust g...
|
|
WO/1991/014861A1 |
Proposed is a process and device for monitoring the degree of poisoning of a catalytic converter in the exhaust system of an internal-combustion engine, using a lambda probe upstream and downstream of the catalyst. The individual lambda-...
|
|
WO/1988/007622A1 |
In a process for monitoring the performance of catalysers, a heat energy is determined at a first point in the region of the catalyser (1) and the heat energy at at least a second point in the region of the catalyser (1) is also determin...
|
|
JP7471180B2 |
A regeneration control apparatus for controlling, in an exhaust gas treatment apparatus of a diesel engine including a diesel oxidation catalyst (DOC) disposed in an exhaust passage of an internal combustion engine and a diesel particula...
|
|
JP2024055343A |
[Problem] To accurately diagnose catalyst deterioration. A specified value A, which is a threshold value for the concentration of the combined NOx component and ammonia component in the exhaust gas downstream of a three-way catalyst 15, ...
|
|
JP2024049922A |
An object of the present invention is to appropriately notify an operator that stopping of an engine is permitted depending on whether or not regeneration processing is to be performed. A controller 250 controls a notification device 280...
|
|
JP7454068B2 |
An internal combustion engine control device and a catalyst deterioration diagnostic method according to the present invention control the amount of fuel to be supplied to an internal combustion engine such that the air-fuel ratio of the...
|
|
JP2024035459A |
[Problem] To accurately control the amount of collected CO2 stored. A CO2 recovery device 20 according to an embodiment monitors the amount of exhaust gas flowing into a recovery unit that recovers CO2 from vehicle exhaust gas. Furthermo...
|
|
JP2024033578A |
An object of the present invention is to provide a control device for an internal combustion engine that can highly accurately determine an abnormality that an exhaust purification device is in a removed state. A control device for an in...
|
|
JP7444081B2 |
A controller for an internal combustion engine includes processing circuitry that executes a richening process until an exhaust sensor detects exhaust gas having a rich air-fuel ratio. The processing circuitry executes an air supplying p...
|
|
JP7439782B2 |
With this monitoring device and vehicle, it is possible to prevent dilution of engine oil in advance. This monitoring device monitors the amount of ash deposited on a filter disposed in an exhaust passage of an internal combustion engine...
|
|
JP7432291B2 |
An internal combustion engine has an exhaust gas aftertreatment system comprising in the given order in the flow direction of the exhaust gas: a device for metering ammonia and/or a compound that can be decomposed to form ammonia into th...
|
|
JP2024021282A |
An object of the present invention is to provide a deterioration estimation device capable of estimating the degree of deterioration of exhaust system components of an internal combustion engine with high accuracy. A deterioration estima...
|
|
JP2024010970A |
The present invention suppresses deterioration of exhaust emissions due to the influence of hydrogen when changing a catalyst disposed in an exhaust passage of an internal combustion engine between an oxygen-depleted state and an oxygen-...
|
|
JP7421896B2 |
A method is presented for regulating a filling of an exhaust gas component reservoir of a catalytic converter in the exhaust of an internal combustion engine. Using a first catalytic converter model, an actual fill level of the exhaust g...
|
|
JP7420035B2 |
Provided are an internal combustion engine system, a white deposition amount monitoring device for an internal combustion engine system, and a white deposition amount monitoring method for an internal combustion engine system with which ...
|
|
JP7406636B2 |
A temperature of a catalyst (EHC) is estimated with high accuracy. An electronic control device of the present invention controls an engine system that includes: an internal combustion engine; a motor capable of motoring the internal com...
|
|
JP2023181609A |
To provide a control device for an internal combustion engine, a residue removal method, a computer program and a recording medium recording a computer capable of burning an inflammable residue present in an exhaust passage of the intern...
|
|
JP2023180712A |
To provide a control device for an internal combustion engine capable of highly accurately determining an abnormal state where an exhaust emission control device is not mounted.An engine control unit that is a control device for an inter...
|
|
JP2023180714A |
To provide a control device for an internal combustion engine capable of highly accurately determining an abnormal state where an exhaust emission control device is not mounted.An engine control unit that is a control device for an inter...
|
|
JP2023180713A |
To provide a control device for an internal combustion engine capable of highly accurately determining an abnormal state where an exhaust emission control device is not mounted.An engine control unit that is a control device for an inter...
|
|
JP2023175080A |
To determine capacity of a catalyst while suppressing increase in toxic substances in an exhaust gas.A catalyst capacity detection device 10 includes: a catalyst 31 disposed in an exhaust passage 3 of an internal combustion engine 1 and ...
|
|
JP7387274B2 |
To provide an engine system capable of stopping a plasma reactor before discharging is started and preventing leakage of electricity when the plasma reactor is wet with water.An engine system 1 includes: an engine 2; a battery 3; a plasm...
|
|
JP7383445B2 |
Provided is an exhaust purification device which is provided in a cooling water circulation system of an internal combustion engine and which is capable of determining whether or not an auxiliary pump electrically driven in order to cool...
|
