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JP2023007729A |
To provide a failure diagnosis device of a particulate filter which can further properly diagnose a failure of a particulate filter.A failure diagnosis device of a particulate filter comprises: a detection part for detecting a sensor out...
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JP2023008849A |
To provide an NOx emission control method and system during cold start-up of a vehicle.This invention relates to an NOx emission control method during start-up of a vehicle including an exhaust gas aftertreatment system, an engine and an...
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JP7208007B2 |
A radio frequency sensing, control, and particulate matter diagnostics network and system and method and, more specifically, a radio frequency particulate filter diagnostics system comprising a housing including an inlet connected to a s...
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JP7207236B2 |
To estimate presence/absence of blockage of a differential pressure pipe.An engine device includes an engine, a differential pressure sensor having a differential pressure pipe attached to an exhaust pipe of the engine, and a control dev...
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JP7205217B2 |
To diagnose the deterioration of an exhaust emission control device without performing desulfurization control as much as possible.A deterioration diagnosis device of an exhaust emission control device arranged in an exhaust passage of a...
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JP7201077B2 |
According to the present invention, a vehicle comprises an engine and an exhaust gas treatment filter attached to an exhaust gas channel of exhaust gas discharged from the engine. An attachment determination unit of this vehicle control ...
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JP7193436B2 |
To provide a working machine that removes particulate matter (PM, mainly soluble organic fraction (SOF)) before the PM adheres excessively to an oxidation catalyst.A working machine includes: an engine 41; an oxidation catalyst 44 that p...
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JP2022186377A |
To enable abnormal supply of a reduction agent with an addition valve injecting the reduction agent into an exhaust passage to be accurately determined without reducing opportunities to determine the abnormal supply.A pump control sectio...
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JP2022185940A |
To provide a system, a program and a method that can extend the life of a selective reduction catalyst by estimating proper timing for reactivation or exchange of the catalyst.The present invention provides a selective reduction catalyst...
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JP7186532B2 |
To provide a PM accumulation amount estimation device and a PM accumulation amount estimation method capable of diagnosing clogging of particulate matters in a PM filter and improving defect diagnostic accuracy of the PM filter.A PM accu...
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JP7184923B2 |
A measuring device for the determination of an ash loading of a particulate filter for an internal combustion engine of a motor vehicle, where a regeneration operation of the particulate filter is carried out such that, after termination...
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JP7181359B2 |
There is provided an exhaust treatment device for a diesel engine that can prevent unnecessary alarm for ash deposition from being issued.In the exhaust treatment device, a timer measures integrated time IT of a state of non-regenerative...
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JP2022174436A |
To provide an anomaly diagnostic device for an electric heating type catalyst system that can determine anomaly of an electric heating type catalyst and anomaly of a sensor.A control device 100 that is an anomaly diagnostic device calcul...
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JP7172861B2 |
An exhaust gas sensor that detects a specific component included in an exhaust gas includes a sensor element including a detector, an element cover that accommodates the sensor element and has a gas ventilation hole, a heater that heats ...
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JP7169826B2 |
A catalyst deterioration diagnosis system includes an air-fuel ratio detection element and a NOx detection element on a downstream side with respect to a catalyst, and a control element. The control element causes an engine to perform di...
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JP7169106B2 |
To provide a vehicular exhaust emission control device capable of reliably detecting the abnormality of a honeycomb structure including all defects from a differential pressure before and behind the honeycomb structure.On the exhaust-gas...
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JP7168510B2 |
A discharge control apparatus for controlling a flyback power supply circuit which includes a transformer having a primary coil and a secondary coil and performing voltage conversion, and a driver for controlling energization of the prim...
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JP7168511B2 |
To reduce the cost of manufacture while simplifying device configuration.A discharge control device controls a power supply circuit of flyback system. The power supply circuit includes a transformer having a primary coil and a secondary ...
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JP7163862B2 |
The present invention is configured to comprise: a reductant addition valve (61) that is disposed upstream of a selective reduction catalyst (46) for selectively purifying NOx in exhaust gas, and adds, to the exhaust gas, a reductant sol...
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JP2022165153A |
To diagnose a progress degree of deterioration of a particulate matter collecting filter.An electronic control unit 20 calculates a back pressure PE at a current intake air amount GA in a state where an ash deposit amount of a filter 15 ...
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JP7160137B1 |
An object of the present invention is to provide a determination device and a determination method that enable a user to recognize failure of a differential pressure sensor or removal of an exhaust gas purifying member. A determination d...
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JP7159584B2 |
To improve an estimation accuracy of an emission amount of ammonia into a passage downstream a selection reduction type NOx catalyst in an exhaust passage in an engine having the selection reduction type NOx catalyst.A flow rate of exhau...
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JP7155566B2 |
To improve an estimation accuracy of an emission amount of ammonia into a passage downstream a selection reduction type NOx catalyst in an engine equipped with the selection reduction type NOx catalyst.There are included an adsorption re...
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JP7151696B2 |
A catalyst degradation detection apparatus includes an air-fuel ratio detector disposed downstream of a catalyst and configured to detect an air-fuel ratio of exhaust gas flowing out from the catalyst, and an electronic control unit conf...
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JP7151120B2 |
A slip amount estimation step is provided to estimate a slip amount of ammonia that is the amount of ammonia discharged into the portion of the exhaust passage on the downstream side of the NOx selective reduction catalyst on the basis o...
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JP7151119B2 |
A slip amount estimation step is provided to estimate a slip amount of ammonia that is the amount of ammonia discharged into the portion of the exhaust passage on the downstream side of the SCR catalyst on the basis of an estimated ammon...
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JP7147214B2 |
To improve an estimation accuracy of an emission amount of ammonia into a passage downstream a selection reduction type NOx catalyst in an exhaust passage in an engine having the selection reduction type NOx catalyst.A deterioration degr...
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JP7144388B2 |
A method is provided that allows the sulfur component concentration in gasoline to be estimated to high precision. The measuring method of the disclosure is a method of measuring the concentration of sulfur components in gasoline that co...
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JP7142467B2 |
To provide a failure determination device of an exhaust temperature sensor which can improve accuracy of a failure determination.A failure determination device of an exhaust temperature sensor comprises: a determination part for determin...
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JP7141815B2 |
A method for detecting a dosing error of a reduction agent in a dosing module of an SCR catalytic converter system. The SCR catalytic converter system comprises the dosing module, which has a dosing valve and a flow valve as well as a de...
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JP7140046B2 |
To provide an exhaust emission control device capable of accurately detecting a deterioration degree of only a selective reduction catalyst selectively eliminating NOx in exhaust gas and supplying appropriate amount of a reducing agent s...
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JP2022134747A |
To notify that a problem exists in an operation state or the like in forcible regeneration.A control device comprises a notification part for notifying that a problem exists in an operation state of an engine when the number of times at ...
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JP7136075B2 |
The catalyst deterioration detection system 1 comprises an air-fuel ratio detection device 41 detecting an air-fuel ratio of an exhaust gas flowing out from the catalyst 20, an air-fuel ratio control part 71, and a deterioration judgment...
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JP7137009B2 |
A particle sensor for detecting particles in a flow of a measuring gas for detecting soot particles in an exhaust gas channel of a burner or of an internal combustion engine. The particle sensor includes a device for generating or for su...
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JP7131402B2 |
An abnormality detection apparatus for an electrically heated catalyst according to the invention includes an electrical power supply unit configured to adjust a voltage applied to the electrically heated catalyst in such a way as to mak...
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JP2022127906A |
To secure both effectiveness and diagnosis accuracy of an abnormality diagnosis of an SCR catalyst.A catalyst diagnosis device for an engine includes: a downstream side NOx sensor detecting an NOx concentration on the downstream side of ...
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JP2022127905A |
To enhance diagnosis accuracy of an abnormality diagnosis of an SCR catalyst while securing effectiveness of the diagnosis.A catalyst diagnosis device for an engine includes: a diagnosis section making a catalyst diagnosis on the basis o...
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JP2022124872A |
To provide an electronic control device which enables a location of a failure in energizing an electric heater to be identified in a urea water supply system mounted with a plurality of injection valves.An electronic control device compr...
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JP7124727B2 |
Provided is an exhaust gas purification apparatus having a control device that monitors the transition of a detection value of each of an upstream NOx sensor and a downstream NOx sensor, and when the NOx purification rate of the SCR cata...
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JP7125285B2 |
To provide a technique for monitoring the abnormality of an exhaust emission control catalyst due to poor warming-up right after starting an internal combustion engine.An exhaust emission control system for a hybrid vehicle having the in...
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JP2022120676A |
To provide a catalyst deterioration determination device for a saddle-riding type vehicle which enables an action for determining deterioration of a catalyst to be made while inhibiting deterioration of the riding quality, and to provide...
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JP2022120675A |
To provide a catalyst deterioration determination device for a saddle-riding type vehicle which can properly secure opportunities to make an action for determining deterioration of a catalyst while inhibiting influence on the riding qual...
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JP2022119083A |
To provide a technology capable of accurately detecting pulsation of a pressure in a secondary air supply passage.A secondary air supply device includes: an engine; an intake passage in which air sucked to the engine flows; an exhaust pa...
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JP2022118346A |
To provide an exhaust emission control device 20 and a control method of the exhaust emission control device 20 capable of detecting a water adsorption amount of a water trap material 2 disposed at an upstream side of a methane oxidation...
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JP7115417B2 |
To avoid an erroneous diagnosis of a reduction catalyst.An abnormality diagnosis device 10 comprises: an SCR 5; an addition valve 6; a NOx sensor 14 for acquiring an upstream-side NOx amount; an addition amount acquisition part 22 for ac...
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JP7113721B2 |
To provide a diagnostic device capable of improving reliability of diagnosis results from an NOsensor.A diagnostic device (100) diagnoses an NOsensor (21) that is provided upstream of a selective reduction catalyst (13) provided in an ex...
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JP7109140B2 |
A method for diagnosing a quality signal (26). The quality signal (26) is provided by a quality sensor (24) used in a reagent metering system (10). The reagent metering system (10) meters a urea/water solution (14) stored in a tank (12),...
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JP7103034B2 |
To satisfy a regulation requirement for a recording method of information with respect to abnormality detection by a simple method.There is provided a diagnostic device for diagnosing a particulate post-treatment device for removing part...
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JP7103311B2 |
An information management system provided with a plurality of external devices able to send and receive information and a server configured to be able to communicate with the external devices. The external devices are configured to send ...
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JP2022096001A |
To provide a diagnostic device capable of diagnosing a device through which exhaust gas from an engine passes without deteriorating the exhaust gas.A catalyst deterioration diagnostic device (diagnostic device) includes a device 102, a s...
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