专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11203994B2 Method and control device for determining reliability regarding misfire determination of cylinders of an internal combustion engine 有权
公开(公告)号：US11203994B2
公开(公告)日：2021-12-21
申请号：US17253880
申请日：2019-06-14
申请人： Scania CV AB
发明人： Björn Nybäck , Ola Stenlåås , Oskar Kleback
IPC分类号： F02D41/14 , G01M15/11 , F02D41/00 , G01L23/30 , G01L23/24
摘要： Disclosed is a method for determining reliability regarding misfire determination of cylinders of an engine, comprising detecting a pressure in an exhaust manifold for a set of operation parameters comprising a certain range of crank angles for a certain engine load and certain engine speed so as to, for an actual cylinder setup of the engine, create pressure sample value patterns for combustion and misfire conditions. A template course is created for the thus created pressure sample value patterns comprising a set of sample points. The pressure for the created template courses is normalized at a desired crank angle. Difference values are determined based upon differences between sample points and corresponding detected and the normalized pressure values. The determined difference values are summarized so as to determine whether a predetermined share of the summarized difference values lies above or below a predetermined threshold value indicating reliability regarding misfire determination.

2. 发明授权

US10788388B2 Pressure sensor 有权
公开(公告)号：US10788388B2
公开(公告)日：2020-09-29
申请号：US16090891
申请日：2017-04-20
申请人： Hitachi Automotive Systems, Ltd.
发明人： Masahiko Soshino
IPC分类号： G01L19/14 , G01L19/06 , G01L9/00 , G01L23/24 , G01L19/00 , H01L23/00
摘要： Provided is a pressure sensor that uses a sensor chip as a pressure measurement element and can suppress condensation around the sensor chip of water vapor permeating a protective member from a gas to be measured. The pressure sensor includes a pressure measurement chamber into which a gas to be measured is introduced; a sensor chip that faces the pressure measurement chamber; a sensor support that has a support surface supporting the sensor chip; and a protective member that covers the sensor chip. The pressure sensor also includes a heat insulation chamber that faces a back surface opposite to the support surface of the sensor support; and a gas passage that communicates the heat insulation chamber and the pressure measurement chamber.

3. 发明授权

US10215111B2 Controller and control method for internal combustion engine 有权
公开(公告)号：US10215111B2
公开(公告)日：2019-02-26
申请号：US15431852
申请日：2017-02-14
申请人： Mitsubishi Electric Corporation
发明人： Hideki Hagari , Kazuhiro Tokuyama
IPC分类号： F02D35/02 , F02D37/02 , F02D41/00 , F02D41/26 , G01D5/12 , G01L3/04 , G01L23/24 , F02D41/14
摘要： To provide a controller and a control method for an internal combustion engine capable of estimating the cylinder internal pressure of the combustion cylinder accurately in consideration of the torsional vibration of the crankshaft. A controller for an internal combustion engine includes a torsional torque calculator that calculates a value which has an amplitude of the maximum value of torsional vibration torque calculated based on a crank angle acceleration in the combustion period, and vibrates with a preliminarily set natural angular frequency, as a torsional vibration torque in the combustion period; and a cylinder internal pressure estimator that calculates a combustion gas pressure torque, by use of the equation of motion of the rotation system of the crankshaft, based on the crank angle, the crank angle acceleration, and the torsional vibration torque, and estimates the cylinder internal pressure of the combustion cylinder based on the combustion gas pressure torque.

4. 发明授权

US10203257B2 Physical-quantity detection device 有权
公开(公告)号：US10203257B2
公开(公告)日：2019-02-12
申请号：US15326975
申请日：2015-06-15
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takayuki Yogo , Hiroaki Hoshika , Takahiro Miki
IPC分类号： G01F1/50 , G01K1/08 , F02D41/18 , F02M35/10 , G01F1/684 , G01L19/00 , G01L23/24 , G01N19/10
摘要： In order to improve sensor characteristics and minimize variation in said characteristics, a pressure sensor is positioned upstream of a humidity sensor so as to help prevent water from contacting the humidity sensor and dust from adhering to the humidity sensor. This physical-quantity detection device 300 is characterized by having a detection unit 422 that detects humidity, a detection unit 421 that detects pressure, a circuit board 400 that has an electronic circuit that processes detection signals, and a housing 302 that accommodates the circuit board 400. The physical-quantity detection device 300 is also characterized in that the detection units 422, 421 are laid out on the surface of the circuit board 400 in a straight line in the direction in which a gas being measured flows, with the detection unit 421 that detects pressure positioned upstream of the detection unit 422 that detects humidity.

5. 发明申请

US20180156685A1 WIRELESS PRESSURE TESTING SYSTEM AND METHODS OF USE 审中-公开
公开(公告)号：US20180156685A1
公开(公告)日：2018-06-07
申请号：US15832357
申请日：2017-12-05
申请人： A & E Incorporated
发明人： Maximilian Knoell , Timothy J. Alho , Bruce Engel , Jason Horner , Myeong Geun Cheon , Jin Kook Jeong
IPC分类号： G01L23/24 , G01L19/08
CPC分类号： G01L23/24 , G01L19/083 , G01L19/143 , G07C5/08 , G07C2205/02 , H04W4/80
摘要： A pressure measuring device/system that is capable of measuring the pressures of multiple systems in an automobile, including cylinder pressure, fuel pressure, transmission oil pressure, and engine oil pressure, and is capable of displaying and/or recording the measured pressure values remote from the device taking the measured remote pressures. The pressure measuring system has a remote interface and a sensor configured to communicate wirelessly with each other. The interface may be configured to he included within the device purpose built for displaying and interacting with the pressure values measured by the sensor. Additionally or alternatively, the interface may he configured to he downloaded as a mobile application “app” on a smartphone or other similar device.

6. 发明申请

US20180087459A1 CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：US20180087459A1
公开(公告)日：2018-03-29
申请号：US15431852
申请日：2017-02-14
申请人： Mitsubishi Electric Corporation
发明人： Hideki HAGARI , Kazuhiro TOKUYAMA
IPC分类号： F02D35/02 , F02D41/00 , F02D41/26 , F02D37/02 , G01D5/12 , G01L3/04 , G01L23/24
CPC分类号： F02D35/023 , F02D35/024 , F02D35/028 , F02D37/02 , F02D41/0047 , F02D41/005 , F02D41/1498 , F02D41/26 , F02D2200/101 , F02D2200/1012 , F02D2250/28 , G01D5/12 , G01L3/04 , G01L23/24
摘要： To provide a controller and a control method for an internal combustion engine capable of estimating the cylinder internal pressure of the combustion cylinder accurately in consideration of the torsional vibration of the crankshaft. A controller for an internal combustion engine includes a torsional torque calculator that calculates a value which has an amplitude of the maximum value of torsional vibration torque calculated based on a crank angle acceleration in the combustion period, and vibrates with a preliminarily set natural angular frequency, as a torsional vibration torque in the combustion period; and a cylinder internal pressure estimator that calculates a combustion gas pressure torque, by use of the equation of motion of the rotation system of the crankshaft, based on the crank angle, the crank angle acceleration, and the torsional vibration torque, and estimates the cylinder internal pressure of the combustion cylinder based on the combustion gas pressure torque.

7. 发明申请

US20150369685A1 METHOD FOR DETERMINING THE OPENING POINT OF A VALVE 审中-公开
标题翻译：用于确定阀门开口点的方法
公开(公告)号：US20150369685A1
公开(公告)日：2015-12-24
申请号：US14743643
申请日：2015-06-18
申请人： CONTINENTAL AUTOMOTIVE FRANCE , CONTINENTAL AUTOMOTIVE GmbH
发明人： Thierry COLLET , Roland HAUFLER
IPC分类号： G01L23/24
CPC分类号： G01L23/24 , F02D41/004 , F02D41/20 , F02D41/2464 , F02D41/28 , F02D2041/2027 , F02D2041/288 , F02M2025/0845
摘要： Disclosed is a method for determining the opening point PO of a two-position valve (1) controlled by a pulse width-modulated signal (6), the method including the following steps: controlling the valve (1) by a pulse width-modulated test signal ST having a duty cycle R growing as a function of time T; and detecting an opening of the valve (1) by observation of a variation in the time of a detection signal S provided by a pressure signal (7) measured by a pressure sensor (2) arranged in a pipe (4, 5) connected to the valve (1) and noted at a moment to of the variation of the detection signal S, the opening point PO being the duty cycle R of the test signal ST at the noted moment to.
摘要翻译：公开了一种用于确定由脉冲宽度调制信号（6）控制的两位置阀（1）的开口点PO的方法，该方法包括以下步骤：通过脉冲宽度调制具有作为时间T的函数的占空比R的测试信号ST; 通过观察由设置在连接到管道（4,5）上的压力传感器（2）测量的压力信号（7）提供的检测信号S的时间变化来检测阀（1）的打开，阀（1），并且在检测信号S的变化的时刻被注意到，开始点PO是在记录时刻的测试信号ST的占空比R.

8. 发明授权

US06840094B2 Intake pressure sensing device for internal combustion engine 失效
标题翻译：内燃机进气压力传感装置
公开(公告)号：US06840094B2
公开(公告)日：2005-01-11
申请号：US10169150
申请日：2000-12-28
申请人： Maki Hanasato
发明人： Maki Hanasato
IPC分类号： F02D35/00 , F02D41/18 , F02D41/24 , F02D45/00 , G01L9/04 , G01L23/24 , G01M15/09 , G01M15/00
CPC分类号： F02D41/28 , F02D2200/0406 , F02D2200/503 , F02D2400/04 , G01L9/04 , G01L23/24 , G01M15/09
摘要： An intake pressure detecting device for detecting the intake pressure in an intake pipe as information for controlling the operational state of an engine includes an intake pressure detecting sensor for detecting the absolute pressure of the intake air. It further includes a reference voltage power supply for supplying a prescribed reference voltage Vref and a differential amplifier for amplifying the differential between the output voltage Vin from the intake pressure detecting sensor and the reference voltage Vref of the reference voltage power supply. Further, an A/D converter is included for converting the analogue signal output by the differential amplifier to a digital signal. Thereby, the intake pressure can be detected to a high degree of accuracy in a two-cycle engine, for example, which has a relatively low intake negative pressure, while achieving cost reductions.
摘要翻译：用于检测进气管中的进气压力的进气压力检测装置作为用于控制发动机的运行状态的信息，包括用于检测进气的绝对压力的进气压力检测传感器。它还包括用于提供规定参考电压Vref的参考电压电源和用于放大来自进气压力检测传感器的输出电压Vin与参考电压电源的参考电压Vref之间的差分的差分放大器。此外，包括用于将由差分放大器输出的模拟信号转换为数字信号的A / D转换器。因此，在二冲程发动机例如具有相对较低的进气负压的同时可以高精度地检测进气压力，同时实现成本降低。

9. 发明授权

US5744770A Indicating apparatus for indicating a vacuum 失效
标题翻译：用于指示真空的指示装置
公开(公告)号：US5744770A
公开(公告)日：1998-04-28
申请号：US598215
申请日：1996-02-07
申请人： Klaus Moessinger , Stefan Kochert
发明人： Klaus Moessinger , Stefan Kochert
IPC分类号： G01L23/24 , B01D46/42 , B01D46/44 , F02D35/00 , F02D45/00 , F02M35/09 , H01H35/40
CPC分类号： B01D46/446 , F02M35/09 , B01D2265/028 , B01D2279/60
摘要： An indicating apparatus for indicating a vacuum, particularly for indicating the vacuum on the filtered-air side of an air filter for an internal-combustion engine, including a housing and a piston which is movably disposed in the housing and which separates a vacuum area from an anbient-pressure area. A snap element is provided which is activated by the piston and, at a predetermined vacuum, triggers an electric contact.
摘要翻译：一种用于指示真空的指示装置，特别是用于指示用于内燃机的空气过滤器的过滤空气侧的真空的真空，包括壳体和可移动地设置在壳体中的活塞，并且将真空区域从一个临界压区。提供了由活塞激活并且在预定真空下触发电接触的卡扣元件。

10. 发明授权

US4843887A Method and device for measuring pressures in tubular bodies 失效
标题翻译：用于测量管状体压力的方法和装置
公开(公告)号：US4843887A
公开(公告)日：1989-07-04
申请号：US154224
申请日：1988-02-10
申请人： Paul Engeler , Peter Wolfer
发明人： Paul Engeler , Peter Wolfer
IPC分类号： G01L7/00 , F02B3/06 , G01L9/00 , G01L23/24
CPC分类号： G01L9/0001 , G01L23/24 , G01L9/0002 , F02B3/06
摘要： A method and a device for measuring the pressure in a tubular body, for example, in the nozzle of a plastics injection molding machine, in the injection pumps of diesel engines, in gun barrels and the like, makes use of electromechanical transducers of piezoelectric, piezoresistive or strain gauge type to detect the radial and tangential mechanical stresses .sigma..sub.r, .sigma..sub.t in the tube cross section. The output signals s.sub.r, s.sub.t of the transducers are fed to a signal processing facility consisting of a subtraction circuit (for transducers of like polarity) or an addition circuit (for transducers of unlike polarity). The output signal of the signal processing facility is proportional to the difference between the pressures inside and outside the tubular body and may be fed to a further evaluation facility, such as a pressure display or process control device. The invention makes possible the exact measurement of the pressure inside a tubular body without contact with the pressure medium, and excludes disturbing influences as may arise due to temperature gradients, longitudinal stresses and the like.
摘要翻译：用于测量管状体中的压力的方法和装置，例如在塑料注射成型机的喷嘴中，在柴油发动机的喷射泵，枪管等中，利用压电，压阻或应变计型号，以检测管横截面中的径向和切向机械应力σr，σt。换能器的输出信号sr，st被馈送到由减法电路（用于相同极性的换能器）或加法电路（用于不同极性的换能器）组成的信号处理设备。信号处理设备的输出信号与管状体内部和外部的压力差成比例，并且可以被馈送到诸如压力显示或过程控制装置的另外的评估设备。本发明能够精确地测量管状体内的压力而不与压力介质接触，并且不包括由温度梯度，纵向应力等引起的干扰影响。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式