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21. 发明授权

US10865743B2 System and method for determining a fuel vapor concentration in a canister of a vehicle evaporative emissions system and for evaluating the canister based on the fuel vapor concentration 有权
公开(公告)号：US10865743B2
公开(公告)日：2020-12-15
申请号：US16129303
申请日：2018-09-12
申请人： AVL TEST SYSTEMS, INC.
发明人： Benjamin C. Shade , Jonathan Bushkuhl
IPC分类号： G01M15/04 , F02M25/08
CPC分类号： F02M25/0827 , F02M25/089 , F02M25/0836 , F02M25/0854 , B01D2253/102
摘要： A system for testing an evaporative emissions (EVAP) canister of a vehicle according to the present disclosure includes an evaporator configured to contain liquid fuel, a fuel vapor supply line configured to deliver a mixture of fuel vapor and carrier gas from the evaporator to the EVAP canister, and a fuel vapor supply valve disposed in the fuel vapor supply line. The test system further includes a gas density meter configured to measure a density of the fuel vapor mixture flowing through the fuel vapor supply line, and a valve control module configured to control a position of the fuel vapor supply valve to adjust a flow of fuel vapor from the evaporator to the EVAP canister based on the fuel vapor mixture density.

22. 发明申请

US20190391121A1 SYSTEM AND METHOD FOR DETERMINING A CONTAMINATION LEVEL IN AN EMISSIONS MEASUREMENT DEVICE OR SYSTEM 审中-公开
公开(公告)号：US20190391121A1
公开(公告)日：2019-12-26
申请号：US16443060
申请日：2019-06-17
申请人： AVL TEST SYSTEMS, INC.
发明人： James Patrick WILLIAMSON , Benjamin C. SHADE
IPC分类号： G01N33/00
摘要： An emissions test system includes an emissions analyzer, a contamination index module, and a diagnostic module. The emissions analyzer is configured to determine a concentration of an emission in a sample of exhaust gas from an engine. The contamination index module is configured to determine a contamination index based on at least two of a flow rate of the exhaust gas sample, the concentration of the emission in the exhaust gas sample, an operating duration of the emissions test system, a pressure of the exhaust gas, and a temperature of the exhaust gas. The diagnostic module is configured to identify potential contamination of at least one of the emissions test system and a component in the emissions test system based on the contamination index.

23. 发明申请

US20190391044A1 SYSTEM AND METHOD FOR COLLECTING CLEAN AND DIRTY EXHAUST SAMPLES 审中-公开
公开(公告)号：US20190391044A1
公开(公告)日：2019-12-26
申请号：US16443010
申请日：2019-06-17
申请人： AVL TEST SYSTEMS, INC.
发明人： James Patrick WILLIAMSON
IPC分类号： G01M15/10 , F01N11/00
摘要： An emissions test system includes a dilution tunnel, a clean circuit, a dirty circuit, and a sampling control module. The dilution tunnel is configured to receive exhaust gas from an engine and dilution gas from a dilution gas source. The clean circuit is configured to receive gas from the dilution tunnel. The dirty circuit is configured to receive gas from the dilution tunnel independent of the clean circuit. The sampling control module is configured to direct gas from the dilution tunnel to the dirty circuit when the engine is off at the start of a first test phase. The sampling control module is configured to direct gas from the dilution tunnel to the clean circuit at the end of the first test phase when the engine is switched on during the first test phase.

24. 发明申请

US20190078978A1 System And Method For Determining Whether An Engine Is On Or Off Based On A Pressure Of Exhaust Gas Produced By The Engine 审中-公开
公开(公告)号：US20190078978A1
公开(公告)日：2019-03-14
申请号：US16117180
申请日：2018-08-30
申请人： AVL TEST SYSTEMS, INC.
发明人： James Patrick WILLIAMSON , William Martin SILVIS
IPC分类号： G01M15/10
摘要： A system according to the present disclosure includes a pressure sensor and an engine state module. The pressure sensor is configured to measure pressure in an exhaust gas supply line that supplies exhaust gas from an engine to an emissions measurement system. The emissions measurement system includes a dilution tunnel, a sample probe, and a sample collector. The exhaust gas is diluted with a dilution gas in the dilution tunnel, and the sample probe supplies a portion of the diluted exhaust gas to the sample collector. The engine state module is configured to determine whether the engine is on or off based on at least one of (i) a frequency of pulsations in the exhaust gas supply line pressure and (ii) a magnitude of the pulsations in the exhaust gas supply line pressure.

25. 发明授权

US09347926B2 Exhaust sampling system and method for synchronizing time alignment and dilation 有权
标题翻译：排气采样系统和同步时间对准和扩张的方法
公开(公告)号：US09347926B2
公开(公告)日：2016-05-24
申请号：US14406624
申请日：2013-06-11
申请人： AVL TEST SYSTEMS, INC.
发明人： William Martin Silvis , Sarah Montgomery Kingham
IPC分类号： G01M15/10 , G01N1/22 , G01N33/00 , F01N11/00 , F02D41/14 , F02D41/28
CPC分类号： G01N33/0006 , F01N11/00 , F01N2560/00 , F02D41/1444 , F02D41/1445 , F02D41/1466 , F02D41/1467 , F02D41/28 , F02D2041/288 , F02D2250/14 , G01M15/10 , G01M15/102 , G01N1/22 , G01N1/2252 , Y02T10/47
摘要： A system and method is provided for synchronizing a first and second signal of an exhaust sampling system. The first signal is generated by a first instrument and includes an exhaust flow rate component and a first instrument time stamp component. The second signal is generated by a second instrument and includes a pollutant concentration component and a second instrument time stamp component. The second instrument also generates a tertiary signal that has been influenced by the first signal and includes a second instrument time stamp component. A synchronization module determines a time relationship for synchronizing the first signal and the second signal by comparing the first flow rate component and the first instrument time stamp component of the first signal to the tertiary signal and the second instrument time stamp component of the tertiary signal. The synchronization provides accurate calculation of a pollutant mass flow rate.
摘要翻译：提供了一种用于使排气采样系统的第一和第二信号同步的系统和方法。第一信号由第一仪器产生并且包括排气流量分量和第一仪器时间戳分量。第二信号由第二仪器产生，并且包括污染物浓度分量和第二仪器时间戳分量。第二仪器还产生受第一信号影响的第三信号，并包括第二仪器时间戳分量。同步模块通过将第一信号的第一流量分量和第一仪器时间戳分量与第三信号的第三信号和第二仪器时间戳分量进行比较来确定用于同步第一信号和第二信号的时间关系。同步提供了污染物质量流量的精确计算。

26. 发明申请

US20150369702A1 Dual-Purpose Dynamometer 有权
标题翻译：双用途测功机
公开(公告)号：US20150369702A1
公开(公告)日：2015-12-24
申请号：US14730689
申请日：2015-06-04
申请人： AVL TEST SYSTEMS, INC.
发明人： Kenneth Cooper BARNES , Stephen GIBSON
IPC分类号： G01M17/007
CPC分类号： G01M17/0072 , G01M13/025 , G01M17/0074
摘要： A dual-purpose dynamometer assembly is disclosed including a dynamometer motor, a chassis dynamometer roll that can be driven by a vehicle wheel, and a powertrain dynamometer shaft that can be driven by a vehicle powertrain. A gearbox is disposed between and rotatably couples the dynamometer motor with the chassis dynamometer roll and the powertrain dynamometer shaft. At least one chamber wall defining a test chamber is disposed between the dynamometer motor on one side and the chassis dynamometer roll and the powertrain dynamometer shaft on the other side such that the dynamometer motor is disposed outside of the test chamber. There is at least one aperture penetrating the chamber wall through which the dynamometer motor is connected to the chassis dynamometer roll and the powertrain dynamometer shaft. Accordingly, the dynamometer motor is isolated from extreme temperatures within the test chamber.
摘要翻译：公开了一种双用途测力计组件，其包括测力计电动机，可由车轮驱动的底盘测力计辊以及可由车辆动力传动系驱动的动力系测力计轴。变速箱设置在其间并且将测力计电动机与底盘测力计辊和动力系测功机轴可转动地连接。限定测试室的至少一个室壁设置在一侧的测力计电动机和另一侧的底盘测力计辊和动力系测力计轴之间，使得测力计电动机设置在测试室的外部。至少有一个穿透室壁的孔，测力计电机通过该孔连接到底盘测力计辊和动力系测力轴上。因此，测功机马达与测试室内的极端温度隔离。

27. 发明申请

US20150338320A1 CVS System Sample Water Vapor Management 审中-公开
标题翻译： CVS系统样品水蒸汽管理
公开(公告)号：US20150338320A1
公开(公告)日：2015-11-26
申请号：US14816304
申请日：2015-08-03
申请人： AVL TEST SYSTEMS, INC.
发明人： William Martin SILVIS , James Patrick WILLIAMSON
IPC分类号： G01N1/22 , G01M15/10
CPC分类号： G01N1/2252 , G01M15/102 , G01N2001/2255 , G01N2001/2264
摘要： An engine emissions test system according to the principles of the present disclosure includes a sampling conduit, at least one sample bag, a read circuit, and a fill circuit. The sampling conduit is configured to receive exhaust from an engine. The at least one sample bag is configured to store a sample of exhaust. The read circuit is configured to communicate the stored sample of exhaust between the at least one sample bag and an analyzer. The fill circuit includes a fill gas line configured to provide a fill gas to be mixed with the sample of exhaust. The fill gas line extends between a fill gas source and the read circuit.
摘要翻译：根据本公开的原理的发动机排放测试系统包括采样管道，至少一个样品袋，读取电路和填充电路。采样导管被配置为从发动机接收排气。所述至少一个样品袋被配置为存储排气样品。读取电路被配置为在所述至少一个样本袋和分析器之间传送所存储的废气样本。填充电路包括填充气体管线，其构造成提供与排气样品混合的填充气体。填充气体管线在填充气体源和读取电路之间延伸。

28. 发明授权

US11692517B2 System and method for determining a fuel vapor concentration in a canister of a vehicle evaporative emissions system and for evaluating the canister based on the fuel vapor concentration 有权
公开(公告)号：US11692517B2
公开(公告)日：2023-07-04
申请号：US17121659
申请日：2020-12-14
申请人： AVL TEST SYSTEMS, INC.
发明人： Benjamin C. Shade , Jonathan Bushkuhl
IPC分类号： G01M15/04 , F02M25/08
CPC分类号： F02M25/0827 , F02M25/089 , F02M25/0836 , F02M25/0854 , B01D2253/102
摘要： A system for testing an evaporative emissions (EVAP) canister of a vehicle according to the present disclosure includes an evaporator configured to contain liquid fuel, a fuel vapor supply line configured to deliver a mixture of fuel vapor and carrier gas from the evaporator to the EVAP canister, and a fuel vapor supply valve disposed in the fuel vapor supply line. The test system further includes a gas density meter configured to measure a density of the fuel vapor mixture flowing through the fuel vapor supply line, and a valve control module configured to control a position of the fuel vapor supply valve to adjust a flow of fuel vapor from the evaporator to the EVAP canister based on the fuel vapor mixture density.

29. 发明授权

US10520480B2 Deconvolution method for emissions measurement 有权
公开(公告)号：US10520480B2
公开(公告)日：2019-12-31
申请号：US16036458
申请日：2018-07-16
申请人： AVL TEST SYSTEMS, INC.
发明人： Frank Berghof
IPC分类号： G01N33/00 , G01D3/02 , G01D18/00
摘要： Disclosed is a method of correcting a response of an instrument. The method includes determining an inverse convolution function, the inverse convolution function being in the time domain. A response of an instrument to an exhaust sample is recorded as a function of time. The recorded response is then convolved with the inverse convolution function, the result being a convolution corrected instrument response.

30. 发明申请

US20190145355A1 System and Method for Determining a Fuel Vapor Concentration in a Canister of a Vehicle Evaporative Emissions System and for Evaluating the Canister based on the Fuel Vapor Concentration 审中-公开
公开(公告)号：US20190145355A1
公开(公告)日：2019-05-16
申请号：US16129303
申请日：2018-09-12
申请人： AVL TEST SYSTEMS, INC.
发明人： Benjamin C. SHADE , Jonathan BUSHKUHL
IPC分类号： F02M25/08
摘要： A system for testing an evaporative emissions (EVAP) canister of a vehicle according to the present disclosure includes an evaporator configured to contain liquid fuel, a fuel vapor supply line configured to deliver a mixture of fuel vapor and carrier gas from the evaporator to the EVAP canister, and a fuel vapor supply valve disposed in the fuel vapor supply line. The test system further includes a gas density meter configured to measure a density of the fuel vapor mixture flowing through the fuel vapor supply line, and a valve control module configured to control a position of the fuel vapor supply valve to adjust a flow of fuel vapor from the evaporator to the EVAP canister based on the fuel vapor mixture density.

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