SU1337696A1 - Diesel engine load signalling device - Google Patents

Abstract

Invented sp nos to measurement technology. Ileni; invention - improving the accuracy of determining the load diesel engine. With equal voltage proportional to the actual frequency of the engine shaft and the output voltage of multiplier 4, corresponding to the degree of engine overload, the comparison circuit 6 is triggered and the pulse from the output of the latter is fed to the light and sound indicator 8 of the load. It lights up the lamp, corresponding to the engine overload, and a siren is applied. In the event of an engine underload, the driver is also alerted by this siren, which makes it possible for the driver to keep the engine running at the best performance. 1 il. S (l

Description

The invention relates to a measurement technique and can be used to determine the load of a diesel engine.

The purpose of the invention is to improve the accuracy of determining the degree of loading of a diesel engine.

The drawing shows the functional diagram of the device.

The device consists of an I position sensor, an engine regulator control lever connected to the output with the corresponding inputs of blocks 2 and 3 of the multiplication factor change, 4 and 5 multiplication blocks, a comparison circuit 6, the first input of which is connected to the engine 7 frequency meter , and its three outputs are connected to the indicator 8 downloads. The position 1 of the control lever of the engine regulator is a voltage converter, which, when the angle of rotation of the control lever of the engine regulator changes, changes its output voltage in proportion to the change in the nominal values of the frequency of rotation of the engine shaft. The meter 7 of the frequency of rotation of the motor shaft is a high frequency sensor, the output voltage of which is proportional to the frequency of rotation of the motor shaft, is fed to the input of the comparison circuit 6. The output voltages of the sensor 1 position of the control lever of the engine regulator and meter 7 of the engine shaft rotational speed are selected so that at any fixed position of the control signal of the fuel pump regulator and engine operation in a steady state with a nominal load corresponding to the speed mode of the engine their quantitative values are equal.

Light and sound indicator 8 download consists of a siren and three warning lights, the colors of which correspond to underloading, optimal

mode and engine overload,

four

The device works as follows.

When the engine is running, the voltage with sensor 1 with a level that corresponds to the nominal engine speed at this position

five

0

five

0

five

0

control lever of the engine regulator, is fed to the fourth input of the comparison circuit 6. At the same time, its first input from the meter 7 of the rotational speed is initially supplied with a voltage proportional to the actual frequency of rotation of the motor shaft under conditions of its actual operation. When reaching U y (the comparison circuit 6 triggers and gives a pulse to the first input of the light and sound loading indicator 8. In it, the lamp lights up, which corresponds to the optimum engine load.

Simultaneously, from the output of the sensor 1, the voltage is applied to the first inputs of blocks 4 and 5 of the multiplication. Block 4 sets the multiplication factor to less than one (K 1), which corresponds to the level of the output voltage and, block 4, corresponding to the degree of engine overload. Block 5 sets the multiplication factor greater than one (K, 7 1), which corresponds to the level of the output voltage of block 5, corresponding to the degree of engine underload.

However, when switching to a partial mode, due to the nonlinearity of the characteristics of the fuel-pump regulator, the size of the working area changes. Provided that the coefficients K and K are constant, its dimensions can be significantly overestimated. To eliminate this drawback, blocks 2 and 3, depending on the level of the output signal from sensor 1, occur

the change in the coefficients K according to the dependencies of the form:

and K

g

one

K, - 1

- rR

where Ep and Vo are the degree of insensitivity and adjustment of the controller;

coefficient of proportionality for this brand of engine.

Thus, after multiplying in blocks 4 and 5, two voltages are supplied to the second and third inputs of the comparison circuit 6, the magnitude of the voltage supplied to the third input.

proportional to the low frequency of rotation of the motor shaft, for example, the value of the voltage arriving at the second; the input is proportional to the increased frequency of rotation of the motor shaft.

When U is reached, the W.circuit of comparison compares and generates at its second output a pulse arriving at the second input of the light and sound indicator 8 of the load. It lights up the lamp corresponding to the engine overload, and a siren signal sounds, further reminding the driver of the overload. In the event of a comparison of 6% of the comparison, it triggers a pulse at its third output and arrives at the third input of the load indicator 8, in which the lamp corresponding to the engine underload lights up. The driver reacts in a timely manner (by changing the frequency of rotation of the engine shaft, shifting gears to lighting lamps, it keeps the engine running in the best possible mode.

The proposed device makes it possible to reduce by 3-S% the error in determining CTenefUi of a diesel engine load, which leads to an improvement in its fuel efficiency and reduces to an acceptable value

Compiled N. Bogdanova Redakyur M. Petrova Tehred M. Mopi - Corrector M. I. aroshi

Order 4119/37 Circulation 776 Subscription

VMIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Manufacturing plant, Uzhgorod, st. Project, 4

overload modes and

you are under load,

Claims (1)

Invention Formula A device for signaling the loading of a diesel engine, comprising an engine shaft rotational speed meter, connected to the first input of the comparison circuit, the second and third inputs of which are connected to the corresponding outputs 6j: oKOB multiplication, and the loading indicator, two inputs of which are connected to the outputs of the comparison circuit, different By the fact that, in order to determine the accuracy of the degree of loading of the diesel engine, it introduced two units for changing the multiplication factors and the position sensor of the control lever of the centrifugal regulator motor, and the comparison circuit is made with an additional fourth input and an additional third output connected to the load indicator, while the output of the position sensor of the control lever is connected simultaneously to the first inputs of multiplication units, to the inputs of blocks of changing multiplication factors connected to the corresponding second inputs of blocks (hackles, and with the fourth input of the comparison circuit