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Internal combustion engine axial system sygnal electronic stimulating method

A technology of signal electronics and simulation methods, which is applied in the field of internal combustion engine shafting signal simulation and internal combustion engine shafting signal simulation, can solve the problems of large size, easy to wear and heavy weight, etc. Effect

Inactive Publication Date: 2005-03-30
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mechanical torsional vibration table is driven by a motor, which has the disadvantages of large size, heavy weight, high power consumption, and easy wear and tear

Method used

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  • Internal combustion engine axial system sygnal electronic stimulating method
  • Internal combustion engine axial system sygnal electronic stimulating method
  • Internal combustion engine axial system sygnal electronic stimulating method

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Embodiment Construction

[0011] combine figure 1 And Fig. 2, the following further provides embodiment to content of the present invention, utilizes the method for electronic circuit to simulate internal-combustion engine shafting signal, present embodiment adopts electronic type internal-combustion engine shafting signal simulator, and this simulator circuit includes signal generation part, frequency division Part, counting and dead point generation part, external wiring part, the signal is sent by the signal generation part, and the signal is divided by two different multiples through the frequency divider, so that two signals with different frequencies can be obtained. These two signals of different frequencies are counted by the counting and dead point generating circuit, and jump when the specified number of teeth is reached, thus forming a torsional vibration signal, and outputting a square wave signal at the same time as the jump to represent the dead point signal. After the torsional vibration...

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Abstract

The present invention relates to an electronic analogue method for internal combustion engine shaft signal, belonging to the field of power engineering. Said invention utilizes electronic circuit method to analogize internal combustion engine shaft signal, and includes the following steps: making a signal with fixed frequency undergo the process of dividing frequency by using four times to obtain the four signals with four frequencies; high-frequency signal represents high shaft rotating speed, and low-frequency signal represents low shaft rotating speed, transferring said two signals into selecting circuit of number of teeth, then transferring said two signals into counting combinatory circuit, and said circuit can alternatively output said two signals so as to analogize the shaft torsional vibration signal.

Description

technical field [0001] The invention relates to an internal combustion engine shafting signal simulation method, in particular to an internal combustion engine shafting signal electronic simulation method for torsional vibration and piston movement position simulation of the internal combustion engine shafting, belonging to the field of power engineering. Background technique [0002] The signals of the internal combustion engine shaft system mainly include the torsional vibration signal of the shaft system and the dead center signal of the corresponding piston. In order to simulate the torsional vibration characteristics of internal combustion engine shafting, the traditional method is to use a mechanical torsional vibration table. After literature search, it was found that Wang Lin of Huazhong University of Science and Technology published "Development of Shafting Torsional Vibration Experimental Bench" (Journal of Huazhong University of Science and Technology, Vol. 25, No...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/00G01M7/02G01M15/00
Inventor 李玩幽静波张志谊华宏星
Owner SHANGHAI JIAOTONG UNIV