公开(公告)号：US5839405A

公开(公告)日：1998-11-24

申请号：US883774

申请日：1997-06-27

申请人： Alan Falkowski ,  Piotr Czapski ,  Dennis A. Soltis

发明人： Alan Falkowski ,  Piotr Czapski ,  Dennis A. Soltis

IPC分类号： F02B27/00 ,  F02M35/12 ,  F02M35/10

CPC分类号： F02M35/1216 ,  F02M35/1266

摘要： An engine induction system resonator that is designed to minimize emitted engine noise. The resonator includes an enclosed tube that has a first diameter and that defines a resonant chamber therein. The resonator also includes a pipe that has a second diameter smaller than the tube diameter. The pipe extends axially through the tube and has first and second ends that connect to other induction system components to channel inductive air flow therethrough. The pipe defines a plurality of perforated holes distributed along a section of the pipe housed within the tube. The plurality of perforated holes is distributed along the pipe in a manner that minimizes emitted engine noise. The resonator is designed in view of other system components to minimize overall system cost and overall required system implementation area.

摘要翻译： 一种发动机感应系统谐振器，旨在最大限度地减少发动机噪音。 谐振器包括具有第一直径并且在其中限定谐振室的封闭管。 谐振器还包括具有比管直径小的第二直径的管。 管道轴向延伸穿过管，并且具有连接到其它感应系统部件的第一和第二端以引导通过其中的感应空气流。 管道限定沿着容纳在管内的管的一部分分布的多个穿孔。 多个穿孔以沿着管分布的方式以最小化发射的发动机噪声的方式分布。 考虑到其他系统组件来设计谐振器，以最大限度地降低整体系统成本和总体所需的系统实现面积。

公开(公告)号：US5949989A

公开(公告)日：1999-09-07

申请号：US883773

申请日：1997-06-27

申请人： Alan Falkowski ,  Piotr Czapski

发明人： Alan Falkowski ,  Piotr Czapski

IPC分类号： F01N1/06 ,  F02M35/12 ,  G06G7/48

CPC分类号： F02M35/1216 ,  F01N1/065 ,  F02M35/1266

摘要： A method of minimizing engine noise emitted from a motor vehicle air intake system. An objective function to be minimized, such as emitted engine noise, is selected. A model of a motor vehicle engine and intake manifold as an acoustic source is generated. Next, a model of required air induction system components is generated. A set of air induction system components and system dimensional constraints is selected. A model of the air induction system is then created given the generated models of the acoustic source and the required induction system components, the selected air induction system components and the system dimensional constraints to thereby minimize the objective function. The methodology of the present invention minimizes the guesswork associated with multi-component induction system design, as it ties all functions together into a model that can be easily manipulated as needed in response to changing design parameters.

摘要翻译： 一种减少从机动车辆进气系统发出的发动机噪音的方法。 选择要最小化的目标函数，例如发射的发动机噪声。 产生作为声源的汽车发动机和进气歧管的模型。 接下来，生成所需的空气感应系统部件的型号。 选择一套空气感应系统组件和系统尺寸约束。 然后，在产生的声源模型和所需的感应系统组件，所选择的空气感应系统组件和系统尺寸约束下，创建空气感应系统的模型，从而使目标功能最小化。 本发明的方法将与多部件感应系统设计相关联的猜测最小化，因为它将所有功能结合在一起，可以根据需要响应于变化的设计参数而被容易地操纵的模型。

公开(公告)号：US5753804A

公开(公告)日：1998-05-19

申请号：US695766

申请日：1996-08-01

申请人： James La Palm ,  Piotr Czapski

发明人： James La Palm ,  Piotr Czapski

IPC分类号： F02P17/12 ,  G01M15/11 ,  G01M15/00 ,  F02P17/00 ,  G01L3/24

CPC分类号： F02P17/12 ,  G01M15/11

摘要： A digital filter system is used in an internal combustion engine misfire detection system. The digital filter system includes a signal input for inputting a digital signal generated in response to sensed crankshaft angular velocity. A plurality of digital filters is connected to the signal input, with each of the filters being activated over a predetermined range of engine speeds. Each of the plurality of digital filters, upon being activated, operates as a bandpass filter to filter the digital signal at an engine spatial firing frequency and at a predetermined number of multiples of the engine spatial firing frequency. A signal output is also connected to the plurality of digital filters for outputting the filtered digital signal for engine misfire detection purposes.

摘要翻译： 在内燃机失火检测系统中使用数字滤波器系统。 数字滤波器系统包括用于输入响应于感测的曲轴角速度而产生的数字信号的信号输入。 多个数字滤波器连接到信号输入端，每个滤波器在预定的发动机速度范围内被激活。 多个数字滤波器中的每一个在被激活时作为带通滤波器工作，以发动机空间点火频率和发动机空间发射频率的预定数量的倍数滤波数字信号。 信号输出也连接到多个数字滤波器，用于输出用于发动机失火检测目的的滤波数字信号。

公开(公告)号：US5824890A

公开(公告)日：1998-10-20

申请号：US691100

申请日：1996-08-01

申请人： James La Palm ,  Piotr Czapski

发明人： James La Palm ,  Piotr Czapski

IPC分类号： G01M15/11 ,  G01M15/00

CPC分类号： G01M15/11

摘要： An apparatus and corresponding method for detecting misfires of a motor vehicle internal combustion engine. The apparatus includes a speed sensor for generating a signal. Also, the apparatus includes a filter means for filtering noise-related events from said signal corresponding to sensed engine speed to thereby produce a filtered output signal. In addition, a pressure sensor for measuring average manifold absolute pressure over a cylinder firing event to set a misfire threshold change in engine speed value is shown. A comparison means for comparing said filtered output signal with said threshold change in engine speed value to detect an engine misfire condition for said cylinder firing event is also included.

摘要翻译： 一种用于检测机动车内燃机的火灾的装置和相应的方法。 该装置包括用于产生信号的速度传感器。 而且，该装置还包括一个滤波器装置，用于从对应于检测的发动机转速的所述信号滤除与噪声有关的事件，从而产生滤波的输出信号。 此外，示出了用于测量在气缸点火事件上的平均歧管绝对压力以设定发动机转速值的失火阈值变化的压力传感器。 还包括用于比较所述滤波输出信号与发动机转速值的阈值变化以检测所述气缸点火事件的发动机失火状态的比较装置。