SU1441079A1 - Power control system of i.c. engine - Google Patents

Abstract

The invention relates to engine construction and m, b, used to regulate engine power by shutting off operating cycles. The purpose of the invention is to rub the functionality of the system. Sensors (D) 1 and 2 of the rotational speed and load of the engine are connected respectively to counter 3 and converter 4, the outputs of which are connected to groups 9 and 10 of the storage device (memory) 5. The outputs of the memory are connected to information input 11 of timer 6, output which is connected to the electromagnetic drive of the injector 8 through the amplifier 7. In the case of synchronous loading of the timer, the latter is performed with the start input 12 connected to the output D I, the code programmed in the memory determines the sequence of injections and omissions of fuel injections The spins from the signal from D 2. The elements of this code take values from zero to maximum. The zero code corresponds to the shutdown of the engine operating cycle .2 Cp.-f-ly, 7 Il. S s cl

Description

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The invention relates to engine construction, in particular to devices for controlling fuel injection, and can be used to regulate engine power by switching off operating cycles.

The purpose of the invention is to enhance the functionality by allowing changes in work cycle shutdown programs.

Fig. 1 shows a block diagram of a power control system two for the case of synchronous timer loading; 2 is a block diagram of a system for the case of asynchronous timer loading; FIG. 3 shows an example of a timer; figure 4 is a sequence of pulses XI origin; in FIG. 3, a state X2 of the counter that determines the address of the memory; figure 6 - the sequence of pulses of the XZ of a stable frequency, the number of which is characterized 10

counter 14, which is the output of timer 6, is connected to the enable input of the generator 15.

The system works as follows.

Sensor 1 informs at each operating cycle the reference pulse XI, and counter 3 calculates these pulses. Having calculated a certain number of pulses (for example, seven), the counter goes to the initial state, which is equal to zero and continues the counting. Sensor 2 generates a signal proportional to the load on the engine. This signal determines the power that the internal combustion engine must develop. Sensor 2 may be made in the form of a potentiometer, the slider of which is connected to the throttle valve. Sensor 1 is converted to converter code 4, for example, analog-to-digital, into a load code. Code signals from the outputs of counter 3 and transform15

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The chosen one from the storage device is 25 bodies 4 are sent to the first and second

a code and corresponds to the duration of the X4 pulse generated by the timer (injection duration); 7 - pulse X4 at the output of the timer. The system contains a rotational speed sensor 1, an engine load sensor 2, a counter 3, a converter 4, a memory 5, a programmable timer 6, an amplifier 7, an injector 8 connected to the fuel line. The output of sensor 1 is connected to the input of converter 4. The outputs of counter 3 are connected to the first group of address inputs 9 of device 5. The outputs of converter 4 are connected to the second group of address inputs 10 of memory 5. The outputs of device 5 are connected to information inputs 11 of timer 6. Timer output via the amplifier 7 is connected to the electromagnetic drive of the injector 8. In the case of synchronous loading of the timer 6, the latter is performed with the start input 12 (synchronization of the reception of information on the inputs 11) connected to the output of the sensor 1 (FIG. 1). In the case of asynchronous loading of the timer 6, the storage device 5 is configured with a sample enable input 13 connected to the output of the sensor 1 (FIG. 2). The timer consists of a subtracting counter 14 and a generator 15. The output of the generator 15 is connected to the counter input 16 of the counter 14, the overflow output

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counter 14, which is the output of timer 6, is connected to the enable input of the generator 15.

The system works as follows.

Sensor 1 informs at each operating cycle the reference pulse XI, and counter 3 calculates these pulses. Having calculated a certain number of pulses (for example, seven), the counter goes into the initial state, which is equal to zero and continues the counting. Sensor 2 generates a signal proportional to the load on the engine. This signal determines the power that the internal combustion engine must develop. Sensor 2 may be made in the form of a potentiometer, the slider of which is connected to the throttle valve. The sensor 's sensor 2 is converted by converter 4, for example, analog-to-digital, into a load code. Code signals from the outputs of counter 3 and transform15

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input groups 9 and 1 of memory device 5 and determine the address of the sample. The sampling signal from the memory output goes to the information inputs 11 of timer 6 and determines the duration of the fuel injection pulse X4 generated by the latter. The beginning of the pulse X4 is synchronized by the signal XI of sensor 1. The end of the signal X4 is determined by the signal at the inputs 11 of timer 6.

The code programmed in memory 5 determines the sequence of injections and fuel admissions, depending on the engine load conditions, in accordance with the particular engine. The elements of this code, corresponding to specific addresses, take values from zero to maximum (depending on the code width). The zero code corresponds to zero pulse duration X4, i.e. skip fuel injection or, in other words, turn off the operating cycle two.

If counter 14 is an asynchronous loading counter, i.e. loading occurs during the time of existence of the signal at its inputs 11, then the synchronization of loading selected at the specified address from the memory device 5.element of the X4 pulse length code occurs with the signal XI arriving at sampling resolution 13 of device 5 (Fig. 2). During the pulse XI, there is a signal at the outputs of the device 5, then the signal is removed. Upon receipt of a duration code (if it is not zero), the counter goes into a state other than zero. In this case, at the output of the overflow of the counter, a signal appears to enable the operation of the generator 15, which enters the input of the latter. Generator 15 begins to generate X3 pulses with a constant frequency, each of which reduces the counter state by one. The generation of HZ pulses continues until the counter 14 goes to the zero state, after which, at its output of overflow, the enable signal is received by a 20 sender device with two groups of operation of the generator 15.inputs and a programmable timer,

included between the amplifier and ST. connected with it by a counter and a converter, the first group of input 25 memory devices is connected to the output of the counter, the second group of inputs is connected to the output of the converter, the output of the programmable timer is connected to the input of the pulse amplifier, and the input

In that case, if the counter 14 is made with synchronous loading, then it contains the download resolution input 12 (shown in dotted line in FIG. 3) associated with the output of sensor 1. In this case, the sample from the device 5 is loaded into the counter 14 by a signal XI, arriving at the input 12 of the download resolution counter 4. Dal-30 with the output of the storage device. The timer operation is similar. The signal of timer 6 is amplified by amplifier 7 and fed to nozzle 8.

Thus, the system controls the engine power by shutting down more or less of the duty cycles depending on the signal from the load sensor 2. At the same time, any required shutdown program is provided, multilevel enrichment of post-skipped cycles, dependence of injection duration on load.

2. Pop. 1 system, which differs from the fact that, in order to increase accuracy, the programmable timer is executed with a start input, connected with a rotational speed sensor.

3. The system according to claim 1, that tl and h and y with the fact that, with the aim of higher

40 is not accurate, the memory device is configured with a sample enable input associated with a rotational speed sensor.

Invention Formula

1, the engine for controlling the power of the internal combustion engine with vlrym fuel, containing the rotational speed and engine load sensors, an amplifier of pulses supplied to the electromagnetic injector, a counter whose input is connected to a rotational speed sensor, a converter that is connected to a load sensor, and the outputs of the counter and converter are connected to a pulse amplifier, characterized in that, with the aim of expanding the functionality of the possibilities by ensuring the change of the work cycle shutdown programs, The memory is connected between the amplifier and its associated counter and converter, the first group of memory inputs associated with the output of the counter, the second group of inputs with the output of the converter, the output of the programmable timer, and the input of the memory.

with the release of a storage device.

2. Pop-up system 1, characterized in that, in order to improve accuracy, the programmable timer is made with a start input, connected with a rotational speed sensor.

3. The system according to claim 1, so that, in order to improve accuracy, the storage device is configured with a sample enable input associated with a frequency monitor.

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Claims (3)

Claim 1, A system for controlling the power of an internal combustion engine with a fuel injection, comprising speed sensors and engine loads, an amplifier for pulses supplied to an electromagnetic nozzle, a counter whose input is connected to a speed sensor, a converter whose input is connected to a load sensor, and outputs the counter and the converter are connected to a pulse amplifier, characterized in that, in order to expand the functionality by providing changes to the programs for switching off the operating cycles, the system is equipped with and a storage device with two groups of inputs and a programmable timer connected between the amplifier and a counter and a converter connected to it, the first group of inputs of the storage device connected to the output of the counter, the second group of inputs to the output of the converter, the output of the programmable timer connected to the input of the pulse amplifier , and the input to the output of the storage device. 2. The system according to claim 1, characterized in that, in order to improve accuracy, the programmable timer is made with a start input connected to a speed sensor. 3, The system according to claim 1, the difference is that in order to increase accuracy, the storage device is configured with a sampling resolution input associated with a speed sensor. FIG. 2