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公开(公告)号：EP4209666A1
公开(公告)日：2023-07-12
申请号：EP22168708.0
申请日：2022-04-19
发明人： Huang, Zhihui , Wang, Haifeng , Yin, Dinghong , Pan, Zhuying
摘要： The present disclosure discloses a urea sensor, including a top seat assembly, a pipe assembly, and an electronic measurement module assembly; the pipe assembly includes a urea extraction pipe; the electronic measurement module assembly includes a urea liquid level measurement sensor module, a urea solution concentration measurement sensor module, and corresponding measurement mechanisms; the urea liquid level measurement sensor module includes a micro differential pressure sensor, a measurement guide pipe, and a metal electrode; and the urea solution concentration measurement sensor module includes a weight sensor, an object, a motor or an electromagnet, and a structural member. The present disclosure provides a urea sensor, and aims to reduce the material cost and manufacturing cost of the urea sensor; at the same time, the measurement accuracy and the product reliability are improved; an accurate reference basis is provided for treatment of automobile exhaust gas, so that the environment can be better protected; and the production cost of a vehicle manufacturer is reduced, so that the product is more competitive.
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公开(公告)号：EP3521793B1
公开(公告)日：2023-07-05
申请号：EP19151927.1
申请日：2019-01-15
发明人： HEUBUCH, Alexander , KNESTEL, Anton
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公开(公告)号：EP4170142A1
公开(公告)日：2023-04-26
申请号：EP22201082.9
申请日：2022-10-12
申请人： Paccar Inc
摘要： A lean-burn internal combustion engine and an exhaust aftertreatment system having an oxidation catalyst are described. A controller determines a fueling rate and a mass flowrate of the exhaust gas feedstream. An inlet temperature of the exhaust gas feedstream upstream of the oxidation catalyst is determined via the first temperature sensor, and an in-use outlet temperature of the exhaust gas feedstream is determined downstream of the oxidation catalyst via the second temperature sensor. An expected outlet temperature from the oxidation catalyst is determined based upon the inlet temperature, the fueling rate, and the mass flowrate of the exhaust gas feedstream. The oxidation catalyst is evaluated based upon the expected outlet temperature and the in-use outlet temperature.
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公开(公告)号：EP4170141A1
公开(公告)日：2023-04-26
申请号：EP22213894.3
申请日：2017-01-12
申请人： Cummins, Inc.
IPC分类号： F01N11/00
摘要： An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status.
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公开(公告)号：EP4170137A1
公开(公告)日：2023-04-26
申请号：EP21203411.0
申请日：2021-10-19
摘要： The invention concern a method for predicting soot build-up in an engine system when operating according to an intended drive cycle, wherein the engine system comprises an internal combustion engine and an exhaust gas aftertreatment system provided with a particulate filter, the method comprising: (S10) providing data representing engine operational conditions for the internal combustion engine during the intended drive cycle, wherein the data comprises values for at least engine speed and engine torque distributed over a time period representing the intended drive cycle; (S20) determining a working temperature for the exhaust gas aftertreatment system during the intended drive cycle based on the data representing the engine operational conditions; (S30) providing a reference relation between working temperature of the exhaust gas aftertreatment system and a corresponding estimated magnitude of a build-up of soot in the exhaust gas aftertreatment system; and (S40) predicting soot build-up in the engine system when operating according to the intended drive cycle by comparing the determined working temperature for the exhaust gas aftertreatment system with the reference relation.
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公开(公告)号：EP4155514A1
公开(公告)日：2023-03-29
申请号：EP22207994.9
申请日：2020-07-29
申请人： Paccar Inc
发明人： RAMESH, Varum , STARK, Isaac
摘要： A method of manufacturing an on-board diagnostic (OBD) limit part and a method of testing to evaluate an OBD system. The method of manufacturing the OBD limit part includes introducing a contaminant to an selective catalytic reduction (SCR) catalyst and contacting the contaminant with the SCR catalyst for a selected period of time. The method of manufacturing utilizes a vessel, the contaminant, and the SCR catalyst. The OBD limit part is a combination of the contaminant and the SCR catalyst within the vessel. The method of testing to evaluate the OBD system includes collecting data related to an exhaust gas before and after the exhaust gas is exposed to the OBD limit part, collecting an indication provided by the OBD system, and comparing the data related to the exhaust gas and the indication provided by the OBD system. The method of testing to evaluate the OBD system utilizes a system that includes an exhaust gas source, a first and a second fluid path, the OBD limit part, and the OBD system.
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18.发明授权
公开(公告)号：EP3736418B1
公开(公告)日：2023-03-29
申请号：EP20172434.1
申请日：2020-04-30
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公开(公告)号：EP4123135A1
公开(公告)日：2023-01-25
申请号：EP22179156.9
申请日：2022-06-15
发明人： KIM, Jin Ha
摘要： A method includes calculating whether a quantity of the PMs accumulated in a PF is at or above a risk level at which damage to the PF is caused when reproducing the PF, calculating a driving condition index by accumulating a weighting factor for a driving condition under which there is a likelihood of causing the damage to the PF, when the amount of accumulated PMs is at or above the risk level; calculating a temperature index in accordance with a temperature of the PF and a PM index in accordance with the quantity of the accumulated PMs when the quantity of the accumulated PMs is at or above the risk level; calculating a degradation condition index considering the driving condition index, the temperature of the PF, and the quantity of accumulated PMs; and changing a reproduction periodicity of the PF according to the degradation condition index.
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公开(公告)号：EP4121642A1
公开(公告)日：2023-01-25
申请号：EP21711558.3
申请日：2021-03-15
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