RU218193U1 - DIESEL GENERATOR PLANT OF WEAPONS AND MILITARY EQUIPMENT WITH AUTOMATIC INLET VALVE CONTROL SYSTEM - Google Patents

Abstract

The utility model relates to the field of power engineering and electrical engineering, in particular, to built-in diesel generator sets of weapons and military equipment (WME) used to generate electricity and capable of providing power to WME samples while in place, when the engine of the main power plant of the base chassis not used.

The specified technical result of the proposed utility model is achieved by the fact that a diesel generator set of weapons and military equipment samples, containing a generator, an electronic control unit and a stepping motor, the generator rotor is rigidly connected to the crankshaft of a diesel engine having a cylinder, a crank mechanism, a fuel pump high pressure, an all-mode crankshaft speed controller and a cylinder head, a fuel injector, an exhaust poppet spring-loaded valve with a drive and an intake poppet valve are located in the cylinder head, characterized in that the intake poppet valve is self-acting, normally open, with a compression spring and a hollow sleeve , the lower base of the hollow sleeve has an external threaded connection with the internal thread of the cylinder head, with the possibility of acting on the compression spring and changing its precompression value, the upper base of the hollow sleeve has a bevel gearing through a helical shaft of a bevel gear with a stepper motor, with the possibility of regulation the value of precompression of the compression spring, and the stepper motor is made with the possibility of control by means of an electronic control unit with an automatic control algorithm of the precompression of the helical compression spring in the crankshaft speed range of 2800...3350 min ^-1 .

Compared with the prototype, the proposed technical solution allows, by improving the filling of the cylinder with air with optimal operation of the self-acting normally open inlet poppet valve, to increase the power of the diesel engine in the crankshaft speed range of 2800 ... 3350 min ^-1 by automatically adjusting the precompression of the helical spring compression, and as a result, increase the energy performance of the diesel generator set of weapons and military equipment samples.

Description

The utility model relates to the field of power engineering and electrical engineering, in particular, to built-in diesel generator sets of weapons and military equipment (WME) used to generate electricity and capable of providing power to WME samples while in place, when the engine of the main power plant of the base chassis not used.

A diesel generator set is known from the prior art (utility model patent RU No. 97883 U1 IPC H02P 9/04, H02P 9/42 published on September 20, 2010), adopted as a prototype, including a diesel engine, a generator, an electronic control unit and a stepper motor, the generator rotor is rigidly connected to the crankshaft of a diesel engine, having a cylinder, a crank mechanism, a high-pressure fuel pump, an all-mode crankshaft speed controller and a cylinder head, a fuel injector is located in the cylinder head, a spring-loaded outlet poppet valve with a drive and inlet poppet valve.

The disadvantage of the diesel engine of the known diesel generator set is the intake valve drive by means of a gas distribution mechanism with fixed valve timing, which does not allow to fully realize the developed effective power N _e of the engine on the crankshaft shank in the ranges from power, at a maximum torque N _{e M} = 11 .61 kW (at crankshaft speed n = 2800 min ^-1 ) to maximum power N _{e max} = 12.45 kW (at n = 3350 min ^-1 ) of the engine due to a decrease in the filling factor from 0.88 (at N _{e M} ) to 0.742 (at N _{e max} ), which generally leads to a decrease in the energy performance of the diesel generator set.

In turn, a four-stroke diesel engine with a self-acting normally open inlet poppet valve is known from the prior art (utility model patent RU No. 2022), contributing to an increase in the filling ratio and an increase in the effective power of a diesel engine.

мин^-1 по причине определенных значений величины предварительного сжатия винтовой пружины сжатия соответствующей, установленным диапазонам частот вращения коленчатого вала. В свою очередь, согласно описания устройства (патент на полезную модель RU № 210884 U1 МПК F02B 3/06, F02B 29/08, F01L 9/00, F01L 1/00 опубликовано 12.05.2022 г.), величина предварительного сжатия винтовой пружины сжатия задается посредством ручного ввертывания либо вывертывания полой втулки с последующей фиксацией в период наладки дизельного двигателя.A significant disadvantage of the known technical solution is that the self-acting normally open intake poppet valve of a four-stroke diesel engine is able to work efficiently, providing the best filling ratio only in a narrow range of engine crankshaft speeds n

min ^-1 due to certain values of the pre-compression of the helical compression spring corresponding to the established ranges of crankshaft speeds. In turn, according to the device description (utility model patent RU No. 210884 U1 IPC F02B 3/06, F02B 29/08, F01L 9/00, F01L 1/00 published on 05/12/2022), the precompression value of the helical compression spring is set by manually screwing in or out of the hollow bushing with subsequent fixation during the diesel engine adjustment period.

Along with this, it is known that diesel engines in the composition of DC diesel generator sets of VVT samples are characterized by operation in the engine crankshaft speed range of 2800 ... 3350 min ^-1 .

The technical result of the proposed utility model is to increase the energy performance of a diesel generator set of weapons and military equipment by increasing the effective power of a diesel engine by improving the filling of the engine cylinder with air with optimal operation of a self-acting normally open intake poppet valve in the crankshaft speed range of 2800 ... 3350 min ^-1 by means of automatic control of the amount of pre-compression of the compression helical spring.

The specified technical result of the proposed utility model is achieved by the fact that a diesel generator set of weapons and military equipment samples, containing a generator, an electronic control unit and a stepping motor, the generator rotor is rigidly connected to the crankshaft of a diesel engine having a cylinder, a crank mechanism, a fuel pump high pressure, an all-mode crankshaft speed controller and a cylinder head, a fuel injector, an exhaust poppet spring-loaded valve with a drive and an intake poppet valve are located in the cylinder head, characterized in that the intake poppet valve is self-acting, normally open, with a compression spring and a hollow sleeve , the lower base of the hollow sleeve has an external threaded connection with the internal thread of the cylinder head, with the possibility of acting on the compression spring and changing its precompression value, the upper base of the hollow sleeve has a bevel gearing through a helical shaft of a bevel gear with a stepper motor, with the possibility of regulation the value of precompression of the compression spring, and the stepper motor is made with the possibility of control by means of an electronic control unit with an automatic control algorithm of the precompression of the helical compression spring in the crankshaft speed range of 2800...3350 min ^-1 .

The proposal is illustrated by diagrams, images in figures 1-4.

The figure 1 shows a private diagram of a diesel generator set (DGU), placed in the reserved compartment of the product 15 on the stretcher by means of threaded connections. The DGU includes: a diesel engine 11 with a high-pressure fuel pump 36 installed on it due to threaded connections, equipped with a rail with a fuel supply lever 20, where the latter is connected by means of a balanced spring-mechanical system with an all-mode crankshaft speed controller with a stepper motor 21 ; a fuel tank 13 inside which is placed an electric fuel pump 17; low pressure fuel line 35b, an electric fuel pump 17 with a high-pressure fuel pump 36 fixed to each other by means of conical threaded connections; high pressure fuel line 35Afixing between themselves by means of conical threaded connections high pressure fuel pump 36 with a fuel injector 9 (figure 2); generating complex. In turn, the generating complex includes: a generator 14, the rotor of which is rigidly connected by means of a key connection through a conical surface with the crankshaft of a diesel engine 11, and the generator stator 14 is connected by power cables of different polarity 30b with a complex of transformation of control and regulation (KPR) 33 through threaded connections. In KPR 33 includes: block voltage converter 22, consisting of a transformer 23 and valve system 24; block automatic engine control system (ASUD) 25 with an electronic control unit (ECU) engine 32; rectifier module 28, consisting of an output voltage stabilizer27.5 IN 29 and smoothing filters 27. The transmission of electrical energy from the diesel generator set to consumers of electrical energy (PEE) of the VVT 31 sample is carried out through power cables of different polarity 30a connected by threaded connections to the rectifier module 28. Fixing the load current resistance, with an increase in the power consumption of the PEE of the VVT 31 sample, for subsequent signal transmission to the automated control system 25 is carried out by means of a load fixing sensor 26 of the rectifier module 28 along the lines of wires 34b.

Figures 2-3 show the main elements of a diesel engine, which includes: (figure 2) cylinder 6; crank mechanism 5, consisting of piston 4, connecting rod, crankshaft; inlet 3 and outlet 8 channels; outlet spring-loaded poppet valve driven by cam 10; fuel injector 9; self-acting normally open inlet poppet valve (SNOVK) 1 a with a compression helical spring 1 b and a hollow sleeve 1 c . The lower base of the hollow sleeve 1 c has an external threaded connection with the internal thread of the cylinder head 7, where, when twisting, a mechanical effect occurs on the compression helical spring 1 b , changing its pre-compression value. The upper base of the hollow sleeve 1 in (figure 3) has a bevel gearing through the spiral shaft 2 b of the bevel gear 2 in with a stepper motor 2 a , which allows you to control the amount of preload of the helical compression spring 1 b SNOVK 1 a by scrolling the spiral shaft 2 b . Moreover, the stepper motor 2 a is installed in the cylinder head 7 by means of a screw connection. The stepper motor 2 a (figure 1) is controlled by the engine ECU 32 through the line of wires 34 a , with parallel processing of signals in the automatic control system 25 coming from the sensors: crankshaft speed 16; engine temperature 12; oil pressure 18; position of the fuel supply lever 19; fixing load 26.

The figure 4 shows a table of operating modes of the DGU indicating the characteristics of the diesel engine 11 and the compression helical spring 1 b .

The proposed utility model works as follows.

кВт электрической мощности, при этом дизельный двигатель 11 работает по алгоритму, соответствующему 1-му режиму: развивая мощность 12,04 кВт, при частоте вращения коленчатого вала 2800 мин^-1, положении рычага подачи топлива 20 равное 40

43% (от минимального положения равное холостому ходу) и отрегулированном положении полой втулки 1в через шаговый электродвигатель 2а (фиг.2) соответствующей фиксации винтовой пружины сжатия 1б с коэффициентом жесткости с ₁ = 14,6 кН/м на величину предварительного сжатия ΔL _1п = 3,5 мм (фиг.4). При этом СНОВК 1а на данном режиме позволяет обеспечить коэффициент наполнения 0,921.When exposed to a load current (figure 1) created by the EEE of the sample IWT (operation of communication equipment, filter-ventilation unit, battery charge) about 40% (below this load, the operation of the DGU is not recommended) read from the load fixing sensor 26 of the rectifier module 28 V the ASUD 25 unit sends a signal via the line of wires 34 b for the operation of the DGU in the 1st mode. In the 1st mode (figure 4) generating complex DGU generates 3.2

kW of electric power, while the diesel engine 11 operates according to the algorithm corresponding to the 1st mode: developing a power of 12.04 kW, at a crankshaft speed of 2800 min ^-1 , the position of the fuel supply lever 20 is equal to 40

43% (from the minimum position equal to idling) and the adjusted position of the hollow sleeve 1 c through the stepper motor 2 a (fig. 2) of the corresponding fixation of the compression helical spring 1 b with a stiffness coefficient c ₁ = 14.6 kN/m per precompression value Δ L _1p = 3.5 mm (figure 4). At the same time, SNOVK 1 and in this mode allows you to provide a filling factor of 0.921.

52% (от минимального положения равное холостому ходу) и параллельный сигнал на шаговый электродвигатель 2а (фиг.3) для изменения положения (закручиванием) полой втулки 1в в тело головки цилиндра 7 (фиг.2) воздействуя на величину предварительного сжатия ΔL _1п = 4,5 мм винтовой пружины сжатия 1б с коэффициентом жесткости с ₁ = 14,6 кН/м. ДГУ, при соответствующем 2-му режиму работы (фиг.4) вырабатывает 4

кВт электрической мощности, а дизельный двигатель развивает мощность 12,62 кВт, при частоте вращения коленчатого вала 2900 мин^-1 и коэффициенте наполнения 0,911.With an increase in load (figure 1) from the PEE of the VVT 31 sample (additionally: the operation of the fire control system) about 50% of the load fixation sensor 26 of the rectifier module 28 read out from the load fixation sensor 28, a signal is generated along the line of wires 34 b to the ACS 25, where the latter is according to a given algorithm , corresponding to the 2nd mode of operation of the DGU (figure 4) transmits a signal to the engine ECU 32. The engine ECU 32 (figure 1) transmits a signal through the line of wires 34 a to the stepper motor of the all-mode crankshaft speed controller 21 to change the position of the feed lever fuel 20 corresponding 49

52% (from the minimum position equal to idle) and a parallel signal to the stepper motor 2 a (fig. 3) to change the position (twisting) of the hollow sleeve 1 in the body of the cylinder head 7 (fig. 2) acting on the amount of precompression Δ L _1p \u003d 4.5 mm of a helical compression spring 1 b with a stiffness coefficient c ₁ \u003d 14.6 kN / m. DGU, when corresponding to the 2nd mode of operation (figure 4) generates 4

kW of electric power, and the diesel engine develops a power of 12.62 kW, at a crankshaft speed of 2900 min ^-1 and a filling factor of 0.911.

With a subsequent increase in the load (figure 1) from the PEE of the VVT 31 sample (optional: the operation of the armament stabilizer in the modes of horizontal and vertical guidance, air conditioning, etc.) in the ranges from 50 - 95%, subsequent automatic regulation occurs, according to the table of modes operation of the DGU (figure 4), to replenish the load with the transition to the highest mode of operation of the DGU. At the same time, the ASUD 25 through the engine ECU 32 (figure 1) performs automatic (sequential) regulation of the position of the fuel supply lever 20, the twisting moment of the hollow sleeve 1 in (to change the precompression value of the helical spring 1 b ) in order to increase the frequency of revolutions of the crankshaft, diesel engine power and increase the output electric power of the DGU, according to the table of operating modes of the DGU (figure 4).

When the load is reduced (figure 1) from the PEE of the VVT 31 sample (disabling various kinds of PEE), the regulation of the DGU robots occurs in the reverse order, according to the table of the DGU operating modes (figure 4) through the engine ECU 32 of the ASUD 25.

Compared with the prototype, the proposed technical solution allows, by improving the filling of the cylinder with air with optimal operation of the self-acting normally open intake poppet valve, to increase the power of the diesel engine in the crankshaft speed range of 2800 ... 3350 min ^-1 by automatically adjusting the amount of precompression of the helical compression spring , and as a result, increase the energy performance of the diesel generator set of weapons and military equipment samples.

Claims (1)

Diesel generator set of weapons and military equipment samples, containing a generator, an electronic control unit and a stepper motor, the generator rotor is rigidly connected to the crankshaft of a diesel engine having a cylinder, a crank mechanism, a high-pressure fuel pump, an all-mode crankshaft speed controller and cylinder head, the cylinder head contains a fuel injector, an outlet poppet spring-loaded valve with a drive and an inlet poppet valve, characterized in that the inlet poppet valve is self-acting, normally open, with a compression spring and a hollow bushing, the lower base of the hollow bushing has an external threaded connection with internal thread of the cylinder head, with the possibility of affecting the compression spring and changing its precompression value, the upper base of the hollow sleeve has a bevel gearing through the spiral shaft of the bevel gear with a stepper motor, with the possibility of adjusting the precompression value of the compression spring, and the stepper motor is made with the possibility of control by means of an electronic control unit with an algorithm for automatically controlling the amount of precompression of the helical compression spring in the range of crankshaft speeds of 2800 ... 3350 min ^-1 .

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