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公开(公告)号：US20090228167A1
公开(公告)日：2009-09-10
申请号：US12074481
申请日：2008-03-04
CPC分类号： F01L1/185 , F01L1/08 , F01L1/2405 , F01L1/2422 , F01L13/0005 , F01L13/0021 , F01L2105/00 , F01L2800/00 , F01L2800/12 , F01L2820/04 , F02D13/06 , F02D41/221 , G01M15/042 , Y02T10/18
摘要： A method for detecting a low-lift or zero-lift failure mode in a variable valve activation system of an internal combustion engine includes the steps of positioning a piezo-electric element that acts as a radio frequency transmitter relative to a lost motion spring of a two-mode variable valve activation lost motion device, subjecting the piezo-electric element to a compression load when a load from displacement of a lobe of a camshaft acts on the lost motion spring, broadcasting a radio frequency signal each time the piezo-electric element is subjected to the compression load, and evaluating the presence or absence of the broadcasted radio frequency signal in relation to an expected presence or absence of the radio frequency signal. The direct measurement of the mode of each two-mode device is both more reliable and more efficient in the use of engine controller resources compared to currently existing diagnostic methods.
摘要翻译： 一种用于检测内燃机的可变气门启动系统中的低升程或零升程失效模式的方法，包括以下步骤：将用作射频发射器的压电元件相对于 双模式可变阀激活失活装置，当来自凸轮轴的叶片的位移的负载作用在空转弹簧上时，使压电元件受到压缩载荷，每当压电元件 受到压缩负载的影响，并且相对于预期的存在或不存在射频信号来评估广播的射频信号的存在或不存在。 与目前现有的诊断方法相比，每个双模式设备的模式的直接测量在使用发动机控制器资源方面更可靠和更有效。
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公开(公告)号：US07761217B2
公开(公告)日：2010-07-20
申请号：US12074481
申请日：2008-03-04
CPC分类号： F01L1/185 , F01L1/08 , F01L1/2405 , F01L1/2422 , F01L13/0005 , F01L13/0021 , F01L2105/00 , F01L2800/00 , F01L2800/12 , F01L2820/04 , F02D13/06 , F02D41/221 , G01M15/042 , Y02T10/18
摘要： A method for detecting a low-lift or zero-lift failure mode in a variable valve activation system of an internal combustion engine includes the steps of positioning a piezo-electric element that acts as a radio frequency transmitter relative to a lost motion spring of a two-mode variable valve activation lost motion device, subjecting the piezo-electric element to a compression load when a load from displacement of a lobe of a camshaft acts on the lost motion spring, broadcasting a radio frequency signal each time the piezo-electric element is subjected to the compression load, and evaluating the presence or absence of the broadcasted radio frequency signal in relation to an expected presence or absence of the radio frequency signal. The direct measurement of the mode of each two-mode device is both more reliable and more efficient in the use of engine controller resources compared to currently existing diagnostic methods.
摘要翻译： 一种用于检测内燃机的可变气门启动系统中的低升程或零升程失效模式的方法，包括以下步骤：将用作射频发射器的压电元件相对于 双模式可变阀激活失活装置，当来自凸轮轴的叶片的位移的负载作用在空转弹簧上时，使压电元件受到压缩载荷，每当压电元件 受到压缩负载的影响，并且相对于预期的存在或不存在射频信号来评估广播的射频信号的存在或不存在。 与目前现有的诊断方法相比，每个双模式设备的模式的直接测量在使用发动机控制器资源方面更可靠和更有效。
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公开(公告)号：US4476711A
公开(公告)日：1984-10-16
申请号：US487452
申请日：1983-04-21
申请人： Jeffrey S. Gutterman
发明人： Jeffrey S. Gutterman
CPC分类号： G01K7/32 , G01L19/0092 , G01L23/222
摘要： A combined vibration and temperature sensor for an internal combustion engine comprises a piezoelectric disc in mechanical and thermal contact with an engine throttle body and connected electrically in series with an impedance effective to form a voltage divider having a predetermined normalized voltage output at a reference temperature and 50 kilohertz. A 50 kilohertz voltage source is connected across the voltage divider and the vibration signal output provides a temperature signal at 50 kilohertz and an engine vibration signal at a lower frequency such as 5-7 kilohertz.
摘要翻译： 用于内燃机的组合的振动和温度传感器包括与发动机节气门体机械和热接触的压电盘，其与有效形成具有在参考温度下具有预定归一化电压输出的分压器的阻抗串联连接， 50千赫兹。 在分压器两端连接一个50千赫兹的电压源，振动信号输出端提供50千赫兹的温度信号和较低频率（如5-7千赫兹）的发动机振动信号。
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公开(公告)号：US5398676A
公开(公告)日：1995-03-21
申请号：US130107
申请日：1993-09-30
IPC分类号： A61M16/00
CPC分类号： A61M16/0051 , A61M2016/0024
摘要： A portable emergency respirator which contains an electrical power supply, a source of compressed air, and a switch which allows one to produce three separate different types of pneumatic outputs from the source of compressed air. In one mode of operation, the output from the source of compressed air provides intermittent positive pressure ventilation to the patient. In a second mode of operation, the output from the source of compressed air is automatically synchronized with the patient's breathing. In a third mode of operation, the output from the source of compressed air is manually controlled by an operator.
摘要翻译： 一种便携式紧急呼吸器，其包含电源，压缩空气源和开关，其允许从压缩空气源产生三种分开的不同类型的气动输出。 在一种操作模式中，压缩空气源的输出为患者提供间歇性正压通气。 在第二种操作模式中，来自压缩空气源的输出与患者的呼吸自动同步。 在第三种操作模式中，来自压缩空气源的输出由操作者手动控制。
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公开(公告)号：US4555951A
公开(公告)日：1985-12-03
申请号：US643560
申请日：1984-08-23
申请人： Jeffrey S. Gutterman
发明人： Jeffrey S. Gutterman
CPC分类号： G01F1/662
摘要： In one embodiment, a first air flow meter includes a pair of ultrasonic transducers mounted on one wall of a conduit, and an opposite reflective wall is shaped to focus acoustic signals from one transducer to the other. In a second embodiment, the opposite wall is separated into a stepped series of cylindrical reflective surfaces spaced from the transducers by different distances, each surface being one-half wavelength from its adjoining surfaces so that constructive combination of the acoustic signals occurs. For noise of the same wavelength emitted at sources axially spaced from the transducers, the reflective surfaces appear to be spaced by approximately 3/4-wavelength steps so that reflected noise signals tend to cancel.
摘要翻译： 在一个实施例中，第一空气流量计包括安装在导管的一个壁上的一对超声波换能器，并且相对的反射壁成形为将来自一个换能器的声学信号聚焦到另一个。 在第二实施例中，相对的壁被分离成与换能器间隔开不同距离的台阶式圆柱反射表面，每个表面距其邻接表面是两分之一波长，从而出现声信号的建构性组合。 对于在与换能器轴向间隔的源处发射的相同波长的噪声，反射表面看起来间隔大约3/4波长的步长，使得反射的噪声信号倾向于消除。
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公开(公告)号：US4527433A
公开(公告)日：1985-07-09
申请号：US545258
申请日：1983-10-25
申请人： Jeffrey S. Gutterman
发明人： Jeffrey S. Gutterman
IPC分类号： G01F1/66
CPC分类号： G01F1/667
摘要： A fluid flow meter and, more especially, an airflow meter having fast response and very high resolution uses piezoelectric transducers operating near resonance to pass ultrasonic signals upstream and downstream alternately in a flow passage. Transmission signals continue longer than the propagation time to the receiver so that the phase of the received signals can be compared to the transmission signals. The difference of upstream and downstream phase differences is a measure of the air velocity while the sum of those phase differences is useful to determine air temperature. These values along with an air pressure sensor reading are combined to determine mass airflow through the passage. The acoustic transducers are operated near resonance to optimize signal-to-noise ratio. Readings from the initial reception period of each transducer are ignored to avoid the effects of ringing of the transducer from each previous transmission cycle and to allow the receive signal to build up resonance with the acoustic signal.
摘要翻译： 更具体地说，具有快速响应和非常高分辨率的流量计使用在谐振附近操作的压电换能器在流动通道中交替地传递超声信号上游和下游。 传输信号比对接收机的传播时间持续更长，使得接收信号的相位可以与传输信号进行比较。 上游和下游相位差的差异是风速的测量，而这些相位差的总和用于确定空气温度。 这些值与空气压力传感器读数相结合以确定通过通道的质量气流。 声学传感器在谐振附近操作以优化信噪比。 忽略每个换能器的初始接收周期的读数，以避免每个先前传输周期振铃的振铃效应，并允许接收信号与声信号建立共振。
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公开(公告)号：US4527432A
公开(公告)日：1985-07-09
申请号：US548994
申请日：1983-11-07
申请人： Jeffrey S. Gutterman
发明人： Jeffrey S. Gutterman
IPC分类号： G01F1/66
CPC分类号： G01F1/667
摘要： An acoustic fluid flow meter determines the flow velocity or volumetric flow from a measurement of the phase shift of acoustic signals propagated upstream and downstream along an acoustical path in the fluid. High resolution measurements of the phase difference of transmitted and received signals represent the fractional wavelength which exceeds the integral number of waves along the acoustic path. The low resolution determination of the integral and fractional number of waves for each direction is made by measuring the fractional phase shift at one frequency of the acoustic signal and again at a slightly different frequency of the acoustic signal. The difference of those phase shift measurements is proportional to the number of waves along the path for a given direction of propagation. That value is combined with high resolution fractional phase shift measurement to obtain a high resolution total wave number value for each direction of propagation. The difference of those two values then is proportional to the fluid flow.
摘要翻译： 声流体流量计根据流体中声学路径上下游传播的声信号的相移的测量来确定流速或体积流量。 发射和接收信号的相位差的高分辨率测量表示超过沿着声学路径的整个波数的分数波长。 通过测量声信号的一个频率处的分数相移，再次以声信号的稍微不同的频率来测量每个方向的积分和分数数量的低分辨率确定。 这些相移测量的差异与给定传播方向沿着路径的波数成正比。 该值与高分辨率分数相移测量结合，以获得每个传播方向的高分辨率总波数值。 然后，这两个值的差异与流体流量成比例。
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