公开(公告)号：US10352751B2

公开(公告)日：2019-07-16

申请号：US14446060

申请日：2014-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igor Zanetti ,  Giovanni David

IPC: G01F23/00 ,  G01F23/74

Abstract: A control apparatus for detecting a variation of a fluid level in a tank is disclosed. The control apparatus includes an Electronic Control Unit connected to the fluid level sensor. The ECU is configured to monitor a signal value representative of a fluid level in the tank; filter the fluid level signal value using a first filter to obtain a first filtered signal and using a second filter to obtain a second filtered signal, the first filter having a time constant (τ1) lower than a time constant (τ2) of the second filter; calculate an integral value of a difference between the first filtered signal and the second filtered signal; and generate a signal representative of the detection of an increase in the fluid level in the tank when the integral value is greater than a predefined threshold.

公开(公告)号：US20150016485A1

公开(公告)日：2015-01-15

申请号：US14332069

申请日：2014-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Giovanni David ,  Igor Zanetti

IPC: F01N11/00 ,  G01K13/00 ,  G01K3/08

CPC classification number: F01N11/00 ,  G01K3/10 ,  G01K13/00 ,  G01K2205/00 ,  Y02T10/47

Abstract: A method of determining a thermal state or a thermal state transition of a substance based on how much liquid phase is available is disclosed. The method includes: (a) determining a current thermal state of the substance when the internal combustion engine is switched on based on a tank temperature and on a time interval during which the engine is switched off; and (b) calculating a percentage of the liquid phase in case the thermal state is a mixture of solid phase and liquid phase based on a total mass of the substance in the tank, a heat amount supplied to the tank, a heat exchange of the tank with an external environment; and (c) detecting the thermal state transitions based on said tank temperature and its time derivative and on said percentage of the liquid phase.

Abstract translation: 公开了一种基于多少液相可用来确定物质的热态或热状态转变的方法。 该方法包括：（a）基于油箱温度和发动机关闭的时间间隔确定当内燃机接通时物质的当前热状态; 和（b）在热状态是固相和液相的混合物的情况下计算液相的百分比，其基于罐中物质的总质量，供给到罐的热量，热交换量 坦克与外部环境; 和（c）基于所述罐温度及其时间导数和所述液相的百分比来检测热态转变。

公开(公告)号：US09719398B2

公开(公告)日：2017-08-01

申请号：US14332069

申请日：2014-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Giovanni David ,  Igor Zanetti

IPC: G01N25/12 ,  G01N25/36 ,  G01N25/46 ,  G01N25/48 ,  G01N25/28 ,  F01N11/00 ,  G01K13/00 ,  G01K3/10

CPC classification number: F01N11/00 ,  G01K3/10 ,  G01K13/00 ,  G01K2205/00 ,  Y02T10/47

Abstract: A method of determining a thermal state or a thermal state transition of a substance based on how much liquid phase is available is disclosed. The method includes: (a) determining a current thermal state of the substance when the internal combustion engine is switched on based on a tank temperature and on a time interval during which the engine is switched off; and (b) calculating a percentage of the liquid phase in case the thermal state is a mixture of solid phase and liquid phase based on a total mass of the substance in the tank, a heat amount supplied to the tank, a heat exchange of the tank with an external environment; and (c) detecting the thermal state transitions based on said tank temperature and its time derivative and on said percentage of the liquid phase.

公开(公告)号：US20150032391A1

公开(公告)日：2015-01-29

申请号：US14446060

申请日：2014-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igor Zanetti ,  Giovanni David

IPC: G01F23/00

CPC classification number: G01F23/0069 ,  G01F23/74

Abstract: A control apparatus for detecting a variation of a fluid level in a tank is disclosed. The control apparatus includes an Electronic Control Unit connected to the fluid level sensor. The ECU is configured to monitor a signal value representative of a fluid level in the tank; filter the fluid level signal value using a first filter to obtain a first filtered signal and using a second filter to obtain a second filtered signal, the first filter having a time constant (τ1) lower than a time constant (τ2) of the second filter; calculate an integral value of a difference between the first filtered signal and the second filtered signal; and generate a signal representative of the detection of an increase in the fluid level in the tank when the integral value is greater than a predefined threshold.

Abstract translation: 公开了一种用于检测罐中液面变化的控制装置。 控制装置包括连接到液位传感器的电子控制单元。 ECU被配置为监视代表罐中的液位的信号值; 使用第一滤波器对液位信号值进行滤波以获得第一滤波信号，并使用第二滤波器获得第二滤波信号，所述第一滤波器具有低于第二滤波器的时间常数（τ2）的时间常数（τ1） ; 计算第一滤波信号和第二滤波信号之间的差的积分值; 并且当所述积分值大于预定阈值时，产生表示所述罐中的液位增加的检测的信号。