SU1536227A1 - Device for checking engine loading - Google Patents

Abstract

The invention relates to a measurement technique and makes it possible to increase the efficiency of monitoring the load on an internal combustion engine under the conditions of operation of a machine and tractor unit. For this, along with the position sensor of fuel supply limiter 1, unit of technological speed of movement of unit 5, load mismatch circuit 3 and speed of 6, recording circuit 7 and indicator 12, the device for monitoring engine load contains sensor 2 of unit speed and unit 4 of engine load , and the registration circuit 7 is made in the form of three prohibition schemes 8, 9 and 10 and the circuit OR 11. The electrical circuit of the device provides for the formation on the indicator 12 of the signals of the necessary manipulation of specific controls gregatom that increases the efficiency of the control engine load and facilitates the work of the operator. 1 il.

Description

The invention relates to a measuring technique and can be used to control the load on an internal combustion engine under operating conditions.

The aim of the invention is to increase the effectiveness of controp.

The drawing shows the proposed device.

The device for monitoring the engine load contains the sensor 1 of the fuel supply limiter, the sensor 2 of the unit speed, the engine load mismatch circuit 3, the engine load adjuster A, set the unit 5 process speed, the unit speed mismatch circuit 6, the registration circuit 7, made in the first 8, the second 9 and the third 10 prohibition schemes and the scheme OR 11, and the indicator 12 of the engine load.

Sensor 1 is an electrocontact device for switching on the corrector of an all-frequency regulator of the engine shaft rotation. Sensor 2 (for example, a magnetically controlled contact) outputs a signal proportional to the actual speed of the unit. Scheme 3 generates a signal at the first exit when the engine is underloaded and at the second output when it is overloaded. Scheme 6 generates a signal at the first output when the speed of the unit is exceeded and at the second output when the speed is lowered.

The setting of the setting device 5 at the optimum technological speed for a specific agricultural operation is performed manually. Unit 4 determines the optimum degree of engine load for a particular agricultural operation. In scheme 7, the presence of prohibitive signals at the second or third inputs of the prohibition circuits 8, 9 10 prevents the passage of the main signals from their first inputs to the corresponding outputs.

Indicator 12 consists of four signal lamps connected, respectively, to the outputs of circuits 8 (Decrease the fuel supply), 9 (Increase the fuel supply), 11 (Shift down) and 10 (Shift up).

The device works as follows.

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If the motor is not loaded, the contacts of sensor 1 are open and no pulses are input to the input of circuit 3. As the engine loads, the frequency of rotation of its shaft decreases, and when the optimum mode is reached, the contacts of sensor 1 begin to close, which generates pulses at the input of circuit 3 of the engine load mismatch. When the timing of the contact (opening) of the sensor 1 contacts is set to the duration specified by the setting device 4, the signals at the outputs of the circuit 3 are absent and the indicator lamps 12 at the outputs of the circuits 8 and 9 do not light up. If the speed of the unit exceeds the optimum set by setpoint 5, then output 1 of the error circuit 6 produces a signal which, through the first input of the circuit OR 11, causes the output to turn on the lamp. Go to a lower gear:

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If the speed of the unit is lower than the one set at the optimum engine load, then at the second output of the error circuit 6 a signal appears which, through the input 1 of the inhibit circuit 10, causes the lamp to turn on. Go to a higher gear. For a given unit speed, this lamp will also be lit when the engine is underloaded.

Other modes of operation are treated similarly.

By taking into account the actual speed of movement of the unit and the formation on the display of signals about the necessary manipulation of specific controls, the efficiency of controlling the engine load is increased and the work of the operator is facilitated.

Claims (1)

Invention Formula A device for monitoring the engine load, containing the position sensor of the fuel limiter and the unit for setting the technological speed of the unit, connected respectively to the first inputs of the load error circuit and the speed, the outputs of which are black. The registration circuit 1 is associated with an indicator, characterized in that, in order to increase the control efficiency, it is equipped with an aggregate speed sensor and an engine load adjuster, and the registration circuit is made in the form of three inhibit schemes and an OR circuit, and the second input of the velocity difference of the aggregate is connected to its speed sensor, and the first output - with the second inputs of the first and second inhibit schemes and with the first input of the OR circuit, the second input of which is connected to the output of the second inhibit circuit; the second output of the speed error circuit The regatta is connected to the third inputs of the first and second prohibition schemes and the first input of the third prohibition scheme, the second input of which is connected to the first input of the second prohibition scheme and the second output of the engine load mismatch circuit, the first output of which is connected to the first input of the first prohibition scheme, and the second The input is to the engine load control.