公开(公告)号：US4125894A

公开(公告)日：1978-11-14

申请号：US798181

申请日：1977-05-18

申请人： Aloysius T. Cashel ,  Frank Perna ,  Gerald C. Trussell ,  Alfred C. D'Souza ,  Richard A. Karlin ,  James R. Caruth ,  Gary L. Van Ermen ,  Robert W. Arnston ,  Gary F. Comiskey ,  Frederick R. Borgens ,  Keith A. Kreft ,  Arthur Damm ,  Dennis C. Sienaski ,  Robert C. Shepardson ,  Yam C. Leung ,  Thomas M. Jankowski

发明人： Aloysius T. Cashel ,  Frank Perna ,  Gerald C. Trussell ,  Alfred C. D'Souza ,  Richard A. Karlin ,  James R. Caruth ,  Gary L. Van Ermen ,  Robert W. Arnston ,  Gary F. Comiskey ,  Frederick R. Borgens ,  Keith A. Kreft ,  Arthur Damm ,  Dennis C. Sienaski ,  Robert C. Shepardson ,  Yam C. Leung ,  Thomas M. Jankowski

IPC分类号： F02B75/02 ,  F02P17/00 ,  F02P17/08 ,  G01D1/12 ,  G01M15/04 ,  G01M15/05 ,  G01M15/10 ,  G01P21/02 ,  G06F11/00 ,  G10D1/12 ,  G06F15/50 ,  F02P5/04

CPC分类号： G06F11/0763 ,  F02P17/00 ,  F02P17/08 ,  G01D1/12 ,  G01M15/042 ,  G01M15/044 ,  G01M15/05 ,  G01M15/102 ,  G01P21/02 ,  G10D1/12 ,  F02B2075/025 ,  F02B2075/027

摘要： The disclosure describes an improved automated engine diagnosing device employing a digital data processor computer and a cathode ray tube display monitor which displays engine parameter (i.e., condition) values in alphabetic, numeric, and graphical form. Some data is accumulated from the engine by means of direct digital measurements, whereas other data is obtained from the engine by an analog-to-digital converter. The data is then processed by the computer and displayed on the cathode ray tube display monitor.

摘要翻译： 本公开描述了采用数字数据处理器计算机和阴极射线管显示监视器的改进的自动引擎诊断装置，其以字母，数字和图形形式显示引擎参数（即条件）值。 通过直接数字测量从发动机累积一些数据，而通过模数转换器从发动机获得其他数据。 然后由计算机处理数据并显示在阴极射线管显示监视器上。

公开(公告)号：US3940977A

公开(公告)日：1976-03-02

申请号：US489415

申请日：1974-07-17

申请人： Zoltan Voross ,  James R. Caruth ,  Yam C. Leung

发明人： Zoltan Voross ,  James R. Caruth ,  Yam C. Leung

IPC分类号： F02P17/00 ,  G01M15/04 ,  G01L3/26

CPC分类号： F02P17/00 ,  G01M15/044

摘要： The disclosure describes apparatus for disabling selected cylinders of an internal combustion engine operated by periodic cycles of ignition signals. The apparatus prevents one or more predetermined ignition signals in each cycle from energizing engine components, such as spark plugs, which normally receive the ignition signals. In order to achieve this purpose, a clock pulse generator generates a uniform pulse in response to the receipt of each ignition signal from the engine. Three bistable flipflop circuits are used to produce output signals having states representative of the number of clock pulses received from the clock pulse generator. Gating circuitry returns the output signals to an initial state after receipt of a predetermined number of clock pulses, such as the number of cylinders in the engine being diagnosed. As the apparatus commences operation, removable setting means set the output signals to their initial state by means of a setting pulse generated by one of the ignition signals. The repetition rate of the setting pulse is divided before being applied to the flipflop circuits in order to improve the diagnostic usefulness of the system. The transmission of the setting pulse also is delayed so that the output signals normally are returned to their initial state by the gating circuitry and clock pulses prior to the time the setting pulse is received by the flipflop circuits. A selecting circuit generates a disabling pulse in response to a predetermined state of the output signals. The disabling pulse switches a disabling device, such as a triac, to a conductive state to prevent a predetermined ignition signal from firing a selected spark plug, thereby aiding the diagnosis of the engine.

摘要翻译： 本公开描述了用于禁用由周期性的点火信号循环操作的内燃机的选定气缸的装置。 该装置防止每个循环中的一个或多个预定的点火信号激励通常接收点火信号的发动机部件，例如火花塞。 为了实现这一目的，时钟脉冲发生器响应于从发动机接收每个点火信号而产生均匀的脉冲。 三个双稳态触发器电路用于产生具有表示从时钟脉冲发生器接收的时钟脉冲数的状态的输出信号。 在接收到预定数量的时钟脉冲（例如正在诊断的发动机中的气缸数）之后，门控电路将输出信号返回到初始状态。 随着设备的开始操作，可移动设置装置通过由一个点火信号产生的设置脉冲将输出信号设置为初始状态。 在施加到触发器电路之前，设定脉冲的重复率被分割，以提高系统的诊断有用性。 设置脉冲的传输也被延迟，使得输出信号通常在由触发器电路接收设置脉冲之前由门控电路和时钟脉冲返回到其初始状态。 选择电路响应于输出信号的预定状态产生禁用脉冲。 禁用脉冲将诸如三端双向可控硅开关之类的禁用装置切换到导通状态，以防止预定的点火信号点火选定的火花塞，从而有助于诊断发动机。