公开(公告)号：US5189908A

公开(公告)日：1993-03-02

申请号：US618950

申请日：1990-11-28

申请人： Kaoru Sano ,  Fumio Mizushina ,  Toshimitsu Maruki ,  Yukio Naganuma ,  Takashi Goto

发明人： Kaoru Sano ,  Fumio Mizushina ,  Toshimitsu Maruki ,  Yukio Naganuma ,  Takashi Goto

IPC分类号： G01M13/02

CPC分类号： G01M13/025 ,  F16H2061/0068

摘要： A simulation system for an automotive internal combustion engine is designed for simulating a transition state for varying output torque according to variation of the engine driving condition. The system comprises a power plant which incorporates relatively high inertia, and means for compensating high inertia for achieving low inertia equivalent to the automotive internal combustion engine, an engine characteristics generator receiving predetermined engine operation parameter simulated data for deriving control signal commanding output torque of said power plant according to a predetermined engine output torque variation characteristics which is set in terms of said engine operation parameter simulated data, and means, cooperative with said engine characteristics generator and responsive to a torque variation command demanding said output torque from a first value to a second value, for setting a predetermined torque variation characteristics for varying said control signal value according to an elapsed time so that output torque varies from said first value to said second value within a predetermined torque variation transition period.

公开(公告)号：US5209110A

公开(公告)日：1993-05-11

申请号：US624962

申请日：1990-12-10

申请人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

发明人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

IPC分类号： G01R31/34 ,  G01M13/02 ,  H02H7/085

CPC分类号： H02H7/085 ,  G01M13/025

摘要： An over-loading detection system periodically samples a motor operating parameter, e.g. a revolution speed and an output torque at a predetermined relatively short sampling period. Based on the sampled motor operating parameter, a ratio of the output torque and a predetermined over-load rating torque is derived and stored. Over-load detection is performed with respect to a plurality of sampled ratios of the output torque and the over-load rating torque by deriving a running average and comparing the derived running average value with a predetermined threshold.

公开(公告)号：US5144834A

公开(公告)日：1992-09-08

申请号：US618952

申请日：1990-11-28

申请人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

发明人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

IPC分类号： G01M13/02

CPC分类号： G01M13/025

摘要： A simulation system for an automotive internal combustion engine is suitable for simulating an engine operation for performing a bench test for an engine associated vehicular component, such as an automatic power transmission, an automatic transaxle, a differential gear box, and so forth. The system comprises a power plant which incorporates a relatively high inertia, and means for compensating the high inertia for achieving a low inertia equivalent to the automotive internal combustion engine; an engine characteristics generator receiving predetermined engine operation parameter simulated data for deriving a control signal commanding an output torque of said power plant according to a predetermined engine output torque variation characteristic which is set in terms of said engine operation parameter simulated data, and means, responsive to a simulated engine environmental condition indicative data, for deriving a correction value based on said environmental condition for correcting said control signal.

公开(公告)号：US5097699A

公开(公告)日：1992-03-24

申请号：US618951

申请日：1990-11-28

申请人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

发明人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki ,  Yukio Naganuma

IPC分类号： F16H59/16 ,  G01M13/02

CPC分类号： G01M13/025 ,  F16H2059/743 ,  F16H59/16

摘要： A system and method for testing a specimen such as a vehicular power transmission (e.g., an automatic transmission) and analyzing an engine output characteristic of an engine connected to the power transmission in which at least a first revolutional speed on an input or output shaft of the power transmission and a first output torque of the power transmission are measured when the engine operating parameters indicate a predetermined value with the power transmission connected to the engine. A second revolutional speed on the input or output shaft of the power transmission and a second output torque of the power transmission are measured when a low inertia driving unit having the same characteristics as the engine is connected any driven with a power transmission under the same operating parameters described above. A first drive torque of the low inertia driving unit is then measured, a third revolutional speed on the input or output shaft of the power transmission and a third output torque of the power transmission are measured when a predetermined time has passed and when the same low inertia driving unit is connected and driven in the same way, and a second drive torque of the lower inertia driving unit is measured when difference values between the second and third revolutional speeds and second and third output torque fall within a predetermined range. The second drive torque is estimated as the output characteristic of the engine connected to the power transmission.

公开(公告)号：US5086648A

公开(公告)日：1992-02-11

申请号：US619407

申请日：1990-11-29

申请人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki

发明人： Kaoru Sano ,  Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki

IPC分类号： G01M13/02

CPC分类号： G01M13/025

摘要： A simulation system for an automotive internal combustion engine includes a low inertia power generator which includes a direct current motor and a speed increasing device. An engine characteristic generator derives a first signal indicative of a first output torque to be derived as an output of the low inertia power generator. The first output torque is equivalent to that of the engine. A first compensation torque is derived for compensation in view of a set engine inertia. A second compensation torque is further derived for compensation in view of a set inertia of the low inertia power generator. A third compensation torque is further derived based on the first and second compensation torques for compensating a differential in inertia between the engine and the low inertia power generator. A control signal is derived based on the first signal and the third compensation torque. The control signal is fed to the low inertia power generator for controlling operation of the direct current motor so as to provide a second output torque as the output of the low inertia power generator. The second output torque is equivalent to the first output torque. Accordingly, an output characteristic equivalent to that of the engine is provided as the output of the low inertia power generator.

公开(公告)号：US5060176A

公开(公告)日：1991-10-22

申请号：US427031

申请日：1989-10-25

申请人： Michio Nawa ,  Toshimitsu Maruki ,  Seiki Murakami ,  Fumio Mizushina ,  Takashi Goto

发明人： Michio Nawa ,  Toshimitsu Maruki ,  Seiki Murakami ,  Fumio Mizushina ,  Takashi Goto

IPC分类号： F16H57/00 ,  G01M13/02 ,  G05B23/02 ,  G01L3/00 ,  G01M19/00

CPC分类号： G01M13/025 ,  F16H57/00

摘要： A transmission testing apparatus employs an electric motor as a driving power source. The electric motor is coupled with a speed increasing device for providing engine speed equivalent revolution speed at low speed for realizing engine equivalent low inertia characteristics. The electric motor is associated with a control unit which stores engine torque simulated torque variation characteristics, one of which is selected on the basis of an engine load simulated value. The control unit controls the output torque of the motor toward a torque demand derived on the basis of an engine speed simulated value derived according to the selected one of torque variation characteristics.

公开(公告)号：US4984988A

公开(公告)日：1991-01-15

申请号：US436298

申请日：1989-11-13

申请人： Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki

发明人： Fumio Mizushina ,  Takashi Goto ,  Toshimitsu Maruki

IPC分类号： G01M13/02 ,  G01M17/007

CPC分类号： G01M13/02 ,  G01M13/025 ,  Y10T477/33

摘要： An simulated engine characteristic control system for transmission transient performance tests for automotive vehicles comprises a motor for driving an input shaft of the tested transmission, a pick-up for detecting revolution of the motor, a simulating circuit for simulating an opening angle of the throttle of the engine to be associated with the tested transmission or the intake manifold pressure of the engine, an engine characteristic generator for generating a torque command signal according to predetermined engine revolution/torque characteristic curves, in response to the signals from the pick-up and the simulating circuit, a torque/current transducer for transducing the torque command signal to an analog current command signal according to a predetermined torque/current characteristic, and means for compensating the current command signal in consideration of a torque component occurring at an axial moment of inertia of the rotating member of the motor during acceleration or deceleration of the motor, and a field characteristic of a field coil of the motor, representing the output torque/revolution of the motor. The motor is drivingly controlled in response to a current command signal compensated through the compensating means.

公开(公告)号：US5249458A

公开(公告)日：1993-10-05

申请号：US854699

申请日：1992-03-20

申请人： Kaoru Sano ,  Fumio Mizushina

发明人： Kaoru Sano ,  Fumio Mizushina

IPC分类号： G01M13/02 ,  G01M15/00

CPC分类号： G01M13/025

摘要： A simulation system for an automotive internal combustion engine is suitable for simulating an engine operation for performing a bench test for an engine associated vehicular component, such as an automatic power transmission, an automatic transaxle, a differential gear box, and so forth. The system comprises a power plant which incorporates a relatively high inertia, and means for compensating the high inertia for achieving a low inertia equivalent to the automotive internal combustion engine; an engine characteristics generator receiving predetermined engine operation parameter simulated data for deriving a control signal commanding an output torque of said power plant according to a predetermined engine output torque variation characteristic which is set in terms of said engine operation parameter simulated data, and means, responsive to a simulated engine environmental condition indicative data, for deriving a correction value based on said environmental condition for correcting said control signal.

摘要翻译： 用于汽车内燃机的模拟系统适用于模拟用于对发动机相关车辆部件（例如自动变速器，自动变速驱动桥，差速齿轮箱等）进行台架试验的发动机操作。 该系统包括具有相对高的惯性的发电厂和用于补偿用于实现与汽车内燃机相当的低惯量的高惯量的装置; 发动机特性发生器，接收预定的发动机运转参数模拟数据，用于根据根据所述发动机运转参数模拟数据设定的预定发动机输出转矩变化特性导出指示所述发电厂的输出转矩的控制信号;以及响应 模拟引擎环境条件指示数据，用于基于用于校正所述控制信号的所述环境条件导出校正值。

公开(公告)号：US5085071A

公开(公告)日：1992-02-04

申请号：US436342

申请日：1989-11-13

申请人： Fumio Mizushina ,  Takashi Goto ,  Michio Nawa

发明人： Fumio Mizushina ,  Takashi Goto ,  Michio Nawa

IPC分类号： G01M13/02

CPC分类号： G01M13/025 ,  Y10T74/19014

摘要： An step-up gear unit is adapted for realization of an automotive internal combustion engine simulated driving power supply in use with motor such as an electric motor, a hydraulic motor and so forth. The step-up gear unit is connected to at least two motors for selectively outputting driving torque of sole motor and combined torque of both motors for wider capacity range of capacity of engine to simulate. The gear train of the step-up gear is so composed to selectively connect and disconnect the motors to an output gear for selective output of the driving torque.

公开(公告)号：US5142903A

公开(公告)日：1992-09-01

申请号：US731641

申请日：1991-07-17

申请人： Fumio Mizushina ,  Takashi Goto ,  Michio Nawa

发明人： Fumio Mizushina ,  Takashi Goto ,  Michio Nawa

IPC分类号： G01M13/02

CPC分类号： G01M13/025 ,  Y10T74/19014

摘要： An step-up gear unit is adapted for realization of an automotive internal combustion engine simulated driving power supply in use with motor such as an electric motor, a hydraulic motor and so forth. The step-up gear unit is connected to at least two motors for selectively outputting driving torque of sole motor and combined torque of both motors for wider capacity range of capacity of engine to simulate. The gear train of the step-up gear is so composed to selectively connect and disconnect the motors to an output gear for selective output of the driving torque.