SU1420431A1 - Marker of position of i.c. engine shaft - Google Patents

Abstract

The invention improves the accuracy of the airsd. Unions AND (shaft). The shaft position sensor is made in the form of a sensor 1 O. 1CT1 magnetic () 1 about the radiation and its output is connected with the input of co.ramator 2 and the control of the iHCMoro differentiator (D) 3. The second input D 3 communicates with the output of the peak detector 4, and its output is connected with the input of the zero-organ 5. The outputs of the co.parator 2 and the null-organ 5 are each communicated with their own input of the key 6, the output of which is connected with the former. 7. A change in the pulse frequency leads to a change in the amplitude of the signal at the D 3 output, but with the opposite sign. Thus, the signal at the D D output dderzhivaets constant, and the operating range is extended in the direction of low and high pulse repetition frequency as a sensor of electromagnetic radiation used m b ultrahigh frequency sensor 1 of n ij) -...... ,, 2-yl.

Description

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ABOUT

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The invention relates to technical means for controlling and diagnosing internal combustion engines, in particular, to devices for determining the position of an engine shaft.

The purpose of the invention is to improve the accuracy of determining the position of the motor shaft, e.g. mt

FIG. 1 is a block diagram of the device; in fig. 2 - the time diapons of the time of the discharge circuit of the peak detector 4 is chosen equal to or greater than the maximum period of the impulses of the dead point.

With an increase in the dead center frequency of the pulses, the amplitude of the signal at the output of the controlled differentiator 3 begins to increase, which leads to an increase in the signal at the output of the peak detector 4 and a decrease in the time constant

 grams illustrating the operation of the device. The RC circuit of the differentiator 3, resulting in

: The device contains a sensor 1 of the position of the amplitude of the signal at the output of the differential: a shaft, a comparator 2, a controlled trimmer 3, made with two inputs

peak detector 4, null organ 5, key 6 s

torus also decreases. When the frequency of the amplitude at the output of the controlled differentiator 3 decreases, it decreases: the two inputs decrease and the shaper 7. The signal from the output of the peak detector, that

The output of sensor 1 is connected to the input of a com- leads to an increase in the time constant.

Parameter 2 and the first input of the controlled differentiator 3, the output of which is connected to the input of the null organ 5 and the input of the peak detector 4. The output of the peak detector 4 is connected to the second control unit 20 extends towards the low and the input of the differentiator 3. The output of zero-high frequencies of the pulse of a mertorgan is connected to the second input of the key 6, the output of the comparator 2 is connected to the first input, and the output of the key 6 is connected to the driver 7.

 The device works as follows. The signal of sensor 1, (Fig. 2a), form a RC-circuit of differentiator 3 and an increase in amplitude at its output. Thus, the signal at the output of the differentiator is kept constant and the operating range

out point.

Claims (2)

1. The positioner of the shaft position of the internal combustion engine, containing a differentiator, a zero-organ and a series-connected shaft position sensor, a comparator, a key made with two When it passes by its sensitive element of the TDC marker, it arrives at the input of the comparator 2. 1. The positioner of the shaft position of the internal combustion engine, containing a differentiator, a zero-organ and a series-connected shaft position sensor, a comparator, a key made with two The threshold of operation of the comparator is set by the inputs and the driver, and the output is above interference level. A rectangular pulse from the output of the comparator 2 (Fig. 26) is fed to the input of the key 6, which serves to eliminate interference in the pauses of the left to the dead point pulses. A shaft position sensor is connected to the input of a null organ, the output of which is associated with a second key input, characterized in that, in order to improve accuracy, the marker is additionally equipped with a type detector. At the same time, the signal from sensor 1 post 5 of the shaft position sensor is made as barks at the input of a controlled differential sensor of electromagnetic radiation, diftor 3. The differentiated signal (Fig. 2c) is fed to the input of the zero-body 5, which forms a positive signal when the signal transitions at its entrance through “zero (phi1 2d). This signal arrives at the second input of the key 6, which forms a pulse, the leading front of which corresponds to the moment of passage of the dead one. points (Fig. 2c). Then the impulse passes through 40 shaper (Fig. 2g). 7 The fermentator is provided with an additional control input and is installed in the line between the output of the shaft position sensor and the zero body input, and the control input of the differentiator is connected to the output of the peak detector, the input of which is connected to the output of the differentiator. 2. The marker according to claim 1, characterized in that an electromagnetic output of the device, a high-frequency sensor, is used as a sensor. The constant time of the discharge circuit of the peak detector 4 is chosen equal to or greater than the maximum period of the dead point pulse. With an increase in the dead center frequency of the pulses, the amplitude of the signal at the output of the controlled differentiator 3 begins to increase, which leads to an increase in the signal at the output of the peak detector 4 and a decrease in the time constant RC circuit differentiator 3, resulting in leads to an increase in constant time extends both towards the low and high frequencies of the pulse of the CR-circuit of the differentiator 3 and with the increase of the amplitude at its output. Thus, the signal at the output of the differentiator is kept constant and the operating range out point. Invention Formula 1. The positioner of the shaft position of the internal combustion engine, containing a differentiator, a zero-organ and a series-connected shaft position sensor, a comparator, a key made with two inputs and shaper, and the output A shaft position sensor is connected to the input of a null organ, the output of which is associated with a second key input, characterized in that, in order to improve accuracy, the marker is additionally equipped with a type detector.  The shaft position sensor is designed as an electromagnetic radiation sensor, diff The fermentator is provided with an additional control input and is installed in the line between the output of the shaft position sensor and the zero body input, and the control input of the differentiator is connected to the output of the peak detector, the input of which is connected to the output of the differentiator. 2. The marker under item 1, characterized in that the electromagnet as the sensor 1 Figg