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公开(公告)号：US11814027B2
公开(公告)日：2023-11-14
申请号：US17665100
申请日：2022-02-04
发明人： Giorgio L Zoia , Takehito Yokoo
IPC分类号： B60W20/50 , B60W10/06 , B60W10/08 , B60W20/16 , B60W50/02 , F02D41/00 , F02M25/08 , B60W50/029
CPC分类号： B60W20/50 , B60W10/06 , B60W10/08 , B60W20/16 , B60W50/0205 , F02D41/0037 , F02M25/0809 , B60W2050/0297 , B60W2510/0638 , B60W2510/0657 , B60W2710/0644 , B60W2710/0666 , B60Y2200/92 , F02M2025/0845
摘要： A vehicle, a vehicle fuel reactant leak detection system, a computer program product, and a computer implemented method of detecting leakage of a fuel reactant from a vehicle. The vehicle includes one or more fuel cell modules, a fuel supply source to supply a fuel reactant to the one or more fuel cell modules via a high-pressure fuel supply line, a fuel supply valve configured to open and close fuel reactant flow through the high-pressure fuel supply line, and a computing device, operatively connected to the fuel supply source. The computing device includes one or more processors caused to conduct, in response to a detection as sensor data of pressure in the high-pressure fuel supply line when the vehicle engine is in a non-operating state, fuel pressure analysis of the sensor data, and detect, based on the fuel pressure analysis, leakage of the fuel reactant at the fuel supply valve.
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公开(公告)号：US11674469B1
公开(公告)日：2023-06-13
申请号：US17809401
申请日：2022-06-28
发明人： Aed Dudar
CPC分类号： F02D41/222 , F02D41/0037 , F02D41/0045 , F02M25/0836 , F02D2041/223 , F02D2041/228
摘要： Methods and systems are provided for a diagnostic of a pressure sensor. In one example, a method includes bypassing one or more vapor canisters and determining a condition of the pressure sensor based on feedback from a hydrocarbon sensor.
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公开(公告)号：US09945309B2
公开(公告)日：2018-04-17
申请号：US15145656
申请日：2016-05-03
CPC分类号： F02D41/0037 , B60W20/00 , B60W2550/12 , B60W2710/0616 , F02M25/0854 , F02N2200/121 , F02N2200/122 , Y10S903/904
摘要： A vehicle method for barometric pressure identification, including adjusting engine operation responsive to barometric pressure, the barometric pressure based on a pressure change at a sector of the fuel system when the sector is sealed with the vehicle travelling. The method may utilize a pressure change at the sealed sector of the fuel system, such as a sealed fuel tank, to identify barometric pressure, even with the engine off for extended durations of vehicle travel. As such, in a hybrid-vehicle application, including during hill descents in which the engine is maintained off, barometric pressure can still be updated.
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4.发明申请公开(公告)号：US20180066595A1
公开(公告)日：2018-03-08
申请号：US15260170
申请日：2016-09-08
CPC分类号： F02D41/0037 , F01N3/023 , F02D41/042 , F02D41/18 , F02D41/222 , F02D2200/0418 , F02M35/10386 , F02M35/10393
摘要： Methods and systems are provided for diagnosing sensors in an engine intake by utilizing in an evaporative leak check module pump (ELCM pump). In one example, during engine off conditions, the ELCM pump in an evaporative emission system of the vehicle may be operated in a pressure mode to flow ambient air from the evaporative emissions system to the intake manifold. During humidity sensor diagnostics, the air flow may be used to generate water vapors within the intake manifold, and humidity sensor may be rationalized by monitoring an output of the humidity sensor; and during MAF sensor diagnostics, MAF sensor may be rationalized by monitoring if the MAF sensor output corresponds to a flow rate generated by the ELCM.
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5.发明申请METHOD, APPARATUS, AND SYSTEM FOR DIAGNOSING AT LEAST ONE NOx-SENSOR OF A DIESEL ENGINE SYSTEM 审中-公开用于诊断柴油发动机系统的至少一个NOx传感器的方法，装置和系统公开(公告)号：US20170003259A1
公开(公告)日：2017-01-05
申请号：US15200726
申请日：2016-07-01
申请人： DAF Trucks N.V.
发明人： Arjen Daniël HUNTER
CPC分类号： G01N33/0006 , F01N11/00 , F01N2560/026 , F01N2560/14 , F01N2900/0416 , F01N2900/08 , F02D41/0037 , F02D41/1441 , F02D41/1461 , F02D41/1463 , F02D41/222 , F02D41/266 , G01M15/102 , G01N33/0037 , Y02A50/245 , Y02T10/47
摘要： A method and apparatus for field testing and diagnosing at least one NOx-sensor in a diesel engine exhaust system are disclosed. The field testing apparatus is connectable to a truck having a lean burn diesel type engine, via an on-board diagnostic connector. The field testing apparatus is arranged to initiate a test cycle, and to diagnose at least one NOx-sensor in an exhaust system of the truck. The test cycle is performed on a running engine as a test sequence in a stationary truck, in at least two different states of operation, while NOx related values issued by the at least one NOx-sensor are measured over a predefined period of time. At least one state of operation is obtained by simultaneously opening the exhaust gas recirculation valve and controlling the back pressure valve for increasing backpressure. A dedicated algorithm is used to compare the measured values to a predefined model, and to provide a numerical summary and statistical evaluation of the sensor functioning. The numerical summary being indicative of a likelihood of the at least one NOx-sensor behaving correctly, and thereby enables a well founded decision as to whether or not the at least one NOx-sensor requires replacement.
摘要翻译： 公开了用于现场测试和诊断柴油发动机排气系统中的至少一个NOx传感器的方法和装置。 现场测试装置可通过车载诊断连接器连接到具有稀燃柴油型发动机的卡车。 现场测试装置被布置成启动测试循环，并且诊断卡车的排气系统中的至少一个NOx传感器。 测试循环在运行的发动机中作为固定式卡车中的测试顺序在至少两种不同的操作状态下进行，而由至少一个NOx传感器发出的NOx相关值在预定的时间段内被测量。 通过同时打开废气再循环阀并控制用于增加背压的背压阀来获得至少一个操作状态。 使用专用算法将测量值与预定义模型进行比较，并提供传感器功能的数值总结和统计评估。 该数字摘要指示至少一个NOx传感器行为正确的可能性，从而能够确定至少一个NOx传感器是否需要更换。
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公开(公告)号：US09328678B2
公开(公告)日：2016-05-03
申请号：US13657461
申请日：2012-10-22
CPC分类号： F02D41/0037 , B60W20/00 , B60W2550/12 , B60W2710/0616 , F02M25/0854 , F02N2200/121 , F02N2200/122 , Y10S903/904
摘要： A vehicle method for barometric pressure identification, including adjusting engine operation responsive to barometric pressure, the barometric pressure based on a pressure change at a sector of the fuel system when the sector is sealed with the vehicle travelling. The method may utilize a pressure change at the sealed sector of the fuel system, such as a sealed fuel tank, to identify barometric pressure, even with the engine off for extended durations of vehicle travel. As such, in a hybrid-vehicle application, including during hill descents in which the engine is maintained off, barometric pressure can still be updated.
摘要翻译： 一种用于大气压力识别的车辆方法，包括响应于大气压力调节发动机操作，当所述扇区与车辆行驶密封时，基于燃料系统的扇区处的压力变化的大气压力。 该方法可以利用燃料系统的密封部分（例如密封的燃料箱）上的压力变化来识别大气压力，即使发动机关闭延长的车辆行驶持续时间。 因此，在混合动力车辆应用中，包括在发动机保持关闭的下坡期间，仍然可以更新大气压力。
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公开(公告)号：US20150090232A1
公开(公告)日：2015-04-02
申请号：US14039834
申请日：2013-09-27
IPC分类号： F02M25/08
CPC分类号： F02M25/0854 , F02D19/0621 , F02D41/003 , F02D41/0032 , F02D41/0037 , F02D41/004 , F02D41/0042 , F02D41/0045 , F02M25/0836 , F02M25/0872 , F02M25/089
摘要： Embodiments for controlling fuel vapors are disclosed. In one example, a method comprises during a purge of a fuel vapor canister, adjusting a heater of the fuel vapor canister based on a rate of a purge flow exiting the fuel vapor canister and a concentration of hydrocarbons released from the fuel vapor canister. In this way, a fuel vapor canister purge efficiency may be increased.
摘要翻译： 公开了用于控制燃料蒸气的实施例。 在一个示例中，一种方法包括在吹扫燃料蒸气罐的同时，基于从燃料蒸气罐排出的吹扫流的速率和从燃料蒸气罐释放的烃的浓度来调节燃料蒸汽罐的加热器。 以这种方式，可以增加燃料蒸汽罐吹扫效率。
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公开(公告)号：US20090025458A1
公开(公告)日：2009-01-29
申请号：US11878873
申请日：2007-07-27
申请人： Dyrr Ardash
发明人： Dyrr Ardash
CPC分类号： F02M25/0809 , F02D41/0037 , F02D41/221 , F02D41/2403 , F02D2041/225 , F02D2041/228 , F02D2250/14 , Y02T10/40
摘要： Rate based monitoring includes performing test cycles on a monitored system when predetermined conditions are met. Completion of a test cycle is determined by timing a period that is at least as long as the longer of a time required to detect a correct operation of the monitored system and a time to detect a malfunction of the monitored system, the timing being reset if one or more of the predetermined conditions cease to be met. A count is kept of completed test cycles.
摘要翻译： 基于速率的监视包括在满足预定条件时在被监视系统上执行测试周期。 测试周期的完成通过定时至少等于检测被监视系统的正确操作所需的时间的长度以及检测到被监视系统的故障的时间的时间来确定，定时被重置，如果 一个或多个预定条件不再满足。 计数保持完成的测试周期。
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公开(公告)号：US10060393B2
公开(公告)日：2018-08-28
申请号：US13764624
申请日：2013-02-11
IPC分类号： F02M33/04 , F02M25/08 , F02M35/10 , F02D19/06 , F02D41/00 , F02D9/02 , F02M26/71 , F02M26/05 , F02M26/06
CPC分类号： F02M25/0836 , F02D9/02 , F02D19/0621 , F02D41/003 , F02D41/0032 , F02D41/0037 , F02D41/004 , F02D41/0042 , F02D41/0045 , F02D41/005 , F02D2009/0213 , F02M25/08 , F02M26/05 , F02M26/06 , F02M26/71 , F02M35/10222
摘要： A purge valve and a fuel vapor management system for use with an engine emission control system are disclosed. The purge valve may include a first inlet for receiving a first flow of air from an air cleaner, a second inlet for receiving a second flow of purge vapors from an evaporative canister, and an outlet directing a controlled mixture of the first and second flows to an engine, upstream of an intake throttle. Relative amounts of the first flow and second flow may be selectively controlled by varying a position of the valve.
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公开(公告)号：US20180171938A1
公开(公告)日：2018-06-21
申请号：US15739020
申请日：2015-06-23
CPC分类号： F02M25/0818 , F02D41/0037 , F02D2041/224 , F02D2041/225 , F02D2200/0414 , F02D2200/0602 , F02D2200/0606 , F02M25/0836 , F02M25/089 , F02M2025/0845
摘要： A diagnosis device for an evaporated fuel processing device includes: a pump arranged to pressurize or depressurize a system including the fuel tank and the canister; at least one pressure sensor arranged to sense a pressure within the system; and a fuel temperature sensor arranged to sense a temperature of a fuel within the fuel tank, the diagnosis device being configured to select a first leakage diagnosis using a positive pressure or a negative pressure existing within the fuel tank, or a second leakage diagnosis using a forcible pressurization or a forcible depressurization by the pump, based on a temperature difference between a fuel temperature at a start of driving, and a fuel temperature after an end of the driving, with respect to a request of a leakage diagnosis.
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