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公开(公告)号：US10113930B2
公开(公告)日：2018-10-30
申请号：US15328817
申请日：2015-07-21
摘要： A method (45) for determining the total pressure in a cylinder (Pcyl) of an engine as a function of the angular position (crk) of a crankshaft (14) and from a quantity of fuel to be injected in possibly several injections, includes: determining the pressure in the cylinder when there is no combustion, the pressure being called the pressure without combustion (Pcyl_m), determining, for each injection (inji), a curve of sub-variation of pressure (ΔPcomb_i) caused by the combustion of the fuel quantity injected during the such injection (inji), the shape of the curve being estimated as a function of the quantity of fuel to be injected (MFi) and of the angular position for start of injection (SOIi) of the corresponding injection, determining the total pressure in the cylinder (Pcyl) by adding together the pressure without combustion (Pcyl_m) and the pressures given by the pressure sub-variation curves (ΔPcomb_i) of each injection (inji).
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2.发明授权
公开(公告)号：US4525781A
公开(公告)日：1985-06-25
申请号：US305352
申请日：1981-09-24
申请人： Toshiaki Konomi , Shinobu Ishiyama
发明人： Toshiaki Konomi , Shinobu Ishiyama
CPC分类号： G01M15/046 , G01M15/08 , F02B2075/027 , F02D2200/1015
摘要： A method of and an apparatus for measuring fluctuations in the indicated mean effective pressure of an engine from a deviation of the mean pressure or from an unbiased variance (mean square) of the mean pressure obtained from the deviation in the mean pressure by utilizing a deviation of the mean pressure becomes substantially identical with a deviation of the indicated mean effective pressure or an unbiased variance (mean square) of this mean pressure becomes substantially identical with an unbiased variance (mean square) of the indicated mean effective pressure in a cylinder of the engine. This deviation of the mean pressure is calculated from detected changes in the rotational speed of the engine.
摘要翻译： 根据平均压力的偏差或平均压力偏差的平均偏差的偏差（均方根），通过利用偏差来测量发动机指示的平均有效压力的波动的方法和装置， 平均压力的平均压力的变化基本上与所指示的平均有效压力的偏差或该平均压力的无偏差方差（均方根）变得基本相同，该平均压力与所述平均压力的圆柱体中的所示平均有效压力的无偏差方差 发动机。 根据检测到的发动机转速的变化计算平均压力的这种偏差。
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3.发明授权Method and apparatus for indicating performance characteristics of reciprocating piston machines 失效用于指示往复活塞机械性能特征的方法和装置
公开(公告)号：US3283569A
公开(公告)日：1966-11-08
申请号：US42363064
申请日：1964-12-21
申请人： SOUTHERN GAS ASS
发明人： KING JAMES D , EDLUND CARL E
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4.发明授权Circuit for producing a digital count representing the average value of a variable frequency 失效用于产生表示可变频率的平均值的数字计数的电路
公开(公告)号：US4154096A
公开(公告)日：1979-05-15
申请号：US881523
申请日：1978-02-27
申请人： James M. Salt
发明人： James M. Salt
摘要： To obtain a digital signal representative of the average value of the frequency of a V.C.O. 11, a monostable is used to produce fixed length pulses at an indeterminate frequency. These pulses are counted by a control counter and enable a gate to pass the V.C.O. output to a counter connected as a frequency divider. Both of these counters are preset with the same count state and the "borrow" outputs from the dividing counter are counted in a signal counter, the number of "borrow" pulses received in the time taken for the control counter to count to its preset state being the required digital signal.
摘要翻译： 为了获得表示V.C.O的频率的平均值的数字信号。 如图11所示，单稳态用于以不确定的频率产生固定长度的脉冲。 这些脉冲由控制计数器进行计数，并使门通过V.C.O. 输出到作为分频器连接的计数器。 这两个计数器都被预置为相同的计数状态，并且来自分割计数器的“借位”输出在信号计数器中计数，在控制计数器所花费的时间内接收的“借位”脉冲数被计数到其预设状态 作为所需的数字信号。
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5.发明授权Switching arrangement for the determination of the indicated output of an engine 失效用于确定发动机的指示输出的切换装置
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公开(公告)号：US09945750B2
公开(公告)日：2018-04-17
申请号：US15129667
申请日：2015-03-25
摘要： A processing circuit is provided which includes at least an integrator circuit which uses a reference voltage set to have a predetermined magnitude as an operation reference and which integrates a detection signal so as to convert the detection signal into a voltage waveform and a base voltage adjustment circuit which is connected between an input terminal and an output terminal of the integrator circuit and which adjusts the magnitude of a base voltage that is a potential when the detection signal in an output signal output from the integrator circuit is not present. As another form, a processing circuit can be adopted which includes at least one or more amplifier circuits which amplify an output signal from an integrator circuit and a base voltage adjustment circuit which is connected between a supply portion of a reference voltage fed to the amplifier circuit and an input terminal of at least one of the amplifier circuits and which adjusts the magnitude of a base voltage that is a potential when a detection signal in an output signal output from the amplifier circuit is not present.
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公开(公告)号：US20170131170A1
公开(公告)日：2017-05-11
申请号：US15129667
申请日：2015-03-25
摘要： A processing circuit is provided which includes at least an integrator circuit which uses a reference voltage set to have a predetermined magnitude as an operation reference and which integrates a detection signal so as to convert the detection signal into a voltage waveform and a base voltage adjustment circuit which is connected between an input terminal and an output terminal of the integrator circuit and which adjusts the magnitude of a base voltage that is a potential when the detection signal in an output signal output from the integrator circuit is not present. As another form, a processing circuit can be adopted which includes at least one or more amplifier circuits which amplify an output signal from an integrator circuit and a base voltage adjustment circuit which is connected between a supply portion of a reference voltage fed to the amplifier circuit and an input terminal of at least one of the amplifier circuits and which adjusts the magnitude of a base voltage that is a potential when a detection signal in an output signal output from the amplifier circuit is not present.
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公开(公告)号：US4122706A
公开(公告)日：1978-10-31
申请号：US814891
申请日：1977-07-12
申请人： Oluf R. Schmidt
发明人： Oluf R. Schmidt
IPC分类号： G01L23/20 , F02B3/06 , F02B75/02 , F02B75/20 , F02D35/00 , G01L23/00 , G01L23/08 , G01L23/30 , G01M15/00
CPC分类号： G01L23/08 , F02B75/20 , F02B2075/025 , F02B3/06
摘要： An apparatus for measuring instantaneous values of pressure in the cylinders of a reciprocating engine and/or for computing the mean indicated pressure. A transducer associated with each cylinder senses the pressure at moments determined by sensing means co-operating with markings provided on a part of the engine, which effects a reciprocating movement synchronously with the movement of the piston. The markings may have the shape of equidistantly disposed teeth of uniform width and may be provided on the piston rod or on a piston coolant carrying telescopic tube. The sensing means may be of an inductive type which generates control pulses whenever a marking is passing by. The signals from the transducer and the sensing means are transmitted to an electronic calculator associated with a display for computing and visualizing the mean indicated pressure and other engine parameters.
摘要翻译： 一种用于测量往复式发动机的气缸中的压力的瞬时值和/或用于计算平均指示压力的装置。 与每个气缸相关联的传感器感测在与设置在发动机的一部分上的标记配合的感测装置确定的时刻处的压力，其与活塞的运动同步地进行往复运动。 标记可以具有均匀宽度的等距布置的齿的形状，并且可以设置在活塞杆或携带伸缩管的活塞冷却剂上。 感测装置可以是感应式，每当标记通过时产生控制脉冲。 来自换能器和感测装置的信号被传送到与显示器相关联的电子计算器，用于计算和可视化平均指示的压力和其它发动机参数。
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公开(公告)号：US4104907A
公开(公告)日：1978-08-08
申请号：US735591
申请日：1976-10-26
摘要： An electronic measurement system for monitoring and measuring indicated horsepower (IHP) of piston type engines which may be spark-ignition, diesel, steam or other power type, based on two or more cycles of operation. Indicated horsepower (IHP) is computed for each engine cylinder in sequential fashion and is based on measurements of cylinder pressure and crankshaft angle of rotation versus time. The system hereof is also operable to measure revolutions per minute of the engine shaft, as well as combustion and compression pressures (just before ignition).
摘要翻译： 一种电子测量系统，用于监测和测量基于两个或更多个操作周期的活塞式发动机的指示功率（IHP），其可以是火花点火，柴油，蒸汽或其它动力型。 针对每个发动机气缸以顺序的方式计算出指示马力（IHP），并且基于气缸压力和曲轴旋转角度对时间的测量。 该系统还可用于测量发动机轴每分钟的转数，以及燃烧和压缩压力（就在点火之前）。
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