SU1636707A1 - Method and apparatus for determining operating time of internal combustion engine of a vehicle - Google Patents

Abstract

The invention serves to monitor and record the operating time (internal motor life) of an internal combustion engine (ICE) of a transport power unit under operating conditions. The method allows to increase the reliability of measuring the operating time of the internal combustion engine and consists in measuring the time of the total work (operating time) of the internal combustion engine, additionally measuring the operation time and the current engine load level. The product of the operating time at the current load level is determined by the operating time of the internal combustion engine by full-load engine hours, and the weighted average load level (by time) of the engine is determined by the ratio of the full-load time to the total operating time. Apparatus for determining NARO O SA) O 1 O J Figure 1.

Description

ICE contains a time sensor 1, an ICE load sensor for power 2, containing a rotation frequency sensor and an ICE torque sensor connected via a serially connected multiplication unit and a normalizing device to the second input of the first multiplying unit 3. Totalizer 4 hours and totalizer 5 outputs hours are connected respectively to the input of the indicator 7 hours and the indicator 9 full-load hours, as well as the inputs of the divider 6, the output of which is connected to the indicator 8 of the weighted average load value The output of the time sensor 1 is connected to the input of the adder 4 and the first input of the multiplication unit 3, the output of which is connected to the input of the adder 5 of full-load hours. 2 sec. f-ly, 1 z.p, f-ly, 2 silt,

The invention relates to mechanical engineering, namely, to measuring equipment, and can be used to monitor and account for the operating time (engine life) of an internal combustion engine (ICE) of a mobile power plant under operating conditions.

The purpose of the invention is to increase the reliability of measuring the operating time of an internal combustion engine.

FIG. 1 shows the general scheme of the device; in fig. 2 is a circuit diagram of an engine load sensor according to power.

The device contains time sensor 1, engine load sensor 2 for power, first multiply unit 3, 4 hours accumulator, 5 full-load hours accumulator, divider b. 7 hour indicator, 8 weighted average load indicator and 9 full load hours indicator. The motor loading sensor 2 includes (as shown in Fig. 2) a rotational frequency sensor 10, a torque sensor 11, a second multiplication unit 12 and a normalizing device 13.

A device for implementing the method works as follows.

The output signal from the time sensor 1 is fed to the input of the adder 4 and to the first input of the first multiplication unit 3, to the second input of which the signal from the sensor 2 of the engine load is received. The signal from the output of the adder 4 is fed to the input of the indicator 7 and to the second input of the divider b, from the output of which the signal goes to the input of the indicator 8, the signal from the sensor 2 of the engine load is supplied to the second input of the first multiplication unit 3, the signal from the output of which through the adder 5 full-load motochas enters the first input of the divider 6 and the input of the indicator 9 full-load motochas. The signals from the torque sensor 11 and the rotation frequency sensor 10 are fed to the inputs of the second multiplication unit 12, from which the signal through the normalizing device 13 is fed to the second input of the first multiplication unit 3.

When the engine is started, the time sensor 1 automatically fixes the running hours (total operating time) of the engine (Јp) and the engine load sensor according to power 2, which measures the engine loading degree (Ј) in relative values (the ratio of actually used power to its nominal value, which is provided by the normalizing device 13). In the process of engine operation,

multiplying the engine operation time (t) by the degree of engine loading (§) in the first block 3 multiplications. The determination of engine load by power is carried out by multiplying the torque value.

torque (signal from sensor 11) and rotational speed (signal from sensor 10) and the conversion of this value in the device 13. The total operating time of hours is summed in the adder 4, and the full-loading hours

(ts) - in adder 5. Divider 6 determines the weighted average load level (ts / m) of the engine during the measurement time. The total operating time, full-load engine hours and the weighted average load level are displayed on indicators 7, 8 and 9, according to which the actual engine load can be judged.

Claims (3)

Claim 1. A method for determining the engine operating time of an internal combustion engine of a transport machine, which consists in determining the total operating time (engine hours) of the engine, characterized in that, in order to increase the reliability, the operating time and the current engine load degree are also measured by the product of these values determine the engine operating time by full-load engine hours, and according to wearing a full load and total life is determined by the weighted average load (engine life) of the engine. 2. A device for determining the engine operating time of an internal combustion engine of a transport vehicle, comprising a time sensor connected via an engine hour meter with an engine hour indicator, characterized in that it also contains a full-load engine meter, a totalizer and a full-load engine hour indicator, divider , the first multiplication unit and the indicator of the weighted average load degree, the first input of the first multiplication unit connected to the output of the time sensor, the second input to the output do sensor load degree of power, and the output is connected via a full-load hours accumulator to the full-load hours indicator and a divider to the first input, the second input of which is connected to the output of the accumulator hours, and the output - to the indicator of the weighted average value of the load. 3. The device according to claim 2, of which is the fact that the sensor of the load power module contains a torque sensor, a rotational speed sensor, a second multiplication unit and a normalization device, the rotational speed sensor and the torque sensor being connected to corresponding inputs of the second multiplication unit, the output of which is connected to the second input of the first multiplication unit through a normalizing device. Fia2