A high-pressure common rail explosion-proof diesel engine system

Abstract

The present invention relates to a high-pressure common rail explosion-proof diesel engine system, which includes an explosion-proof diesel engine body, a high-pressure common rail system, an air filter, an explosion-proof supercharger, an intercooler, an exhaust gas treatment box, and a heat sink. The above-mentioned components are connected by multiple air pipelines and multiple water pipelines; the intercooler and the heat sink are installed in one body. The present invention transforms the high-pressure common rail diesel engine system that has been widely used on land into an explosion-proof system, which is suitable for underground operations, forming a new high-pressure common rail explosion-proof diesel engine system, which has the advantages of energy saving and emission reduction, noise reduction, and improved safety performance. Through strict control of various parameters, efficient and environmentally friendly operation of underground operations is achieved.

Description

Technical Field

[0001] The invention relates to a high-pressure common rail explosion-proof diesel engine system. Background Art

[0002] The fuel injection system used in high-power diesel engines uses a first-generation control mode of a mechanical fuel injection pump plus a speed governor. The governor changes the position of the fuel injection pump rack to control the injection amount, and the high pressure of the injection is generated by the fuel pump cam. The second-generation control mode uses an electronically controlled fuel injection pump plus an electronic injection controller. By controlling the opening time and opening duration of the electronically controlled pump solenoid valve, the injection starting point and injection amount can be flexibly controlled. The high pressure of the injection is generated by the fuel pump cam.

[0003] The latest fuel injection technology is the third-generation high-pressure common rail fuel injection system. This system eliminates the fuel injection pump independently installed near each cylinder of the diesel engine. The high pressure of fuel injection is generated by an independent high-pressure common rail pump, and the high-pressure fuel is transported to each cylinder by the high-pressure common rail pipe. The control of fuel injection is achieved by the electronic fuel injection controller driving the electronically controlled injector installed in the cylinder.

[0004] The working process of a diesel engine is actually the same as that of a gasoline engine. Each working cycle also goes through four strokes: intake, compression, power, and exhaust. However, since the fuel used in a diesel engine is diesel, which has a higher viscosity than gasoline and is not easy to evaporate, and its auto-ignition temperature is lower than gasoline, the formation of the combustible mixture and the ignition method are different from those of a gasoline engine.

[0005] The diesel engine inhales pure air during the intake stroke. When the compression stroke is close to the end, the diesel oil is increased to more than 10MPa by the injection pump, and then sprayed into the cylinder through the injector. In a very short time, it mixes with the compressed high-temperature air to form a combustible mixture. Due to the high compression ratio of the diesel engine (generally 16-22), the air pressure in the cylinder can reach 3.5-4.5MPa at the end of compression, and the temperature is as high as 750-1000K (while the mixed gas pressure of the gasoline engine at this time will be 0.6-1.2MPa, and the temperature will reach 600-700K), which greatly exceeds the auto-ignition temperature of diesel. Therefore, after the diesel is sprayed into the cylinder, it will ignite and burn immediately after mixing with the air in a very short time. The air pressure in the cylinder rises rapidly to 6-9MPa, and the temperature also rises to 2000-2500K. Driven by the high-pressure gas, the piston moves downward and drives the crankshaft to rotate to perform work, and the exhaust gas is also discharged into the atmosphere through the exhaust pipe.

[0006] Ordinary diesel engines are driven by the engine camshaft, and the diesel is delivered to the fuel chamber of each cylinder by means of a high-pressure oil pump. This fuel supply method changes with the engine speed and cannot achieve the best fuel supply at various speeds. The common rail injection system of electronically controlled diesel engines, which is becoming more and more commonly used, can better solve this problem.

[0007] The common rail injection fuel supply system consists of a high-pressure fuel pump, a common fuel supply pipe, a fuel injector, an electronic control unit (ECU) and some pipeline pressure sensors. Each fuel injector in the system is connected to the common fuel supply pipe through its own high-pressure fuel pipe, and the common fuel supply pipe plays a hydraulic pressure storage role for the fuel injector. When working, the high-pressure fuel pump delivers fuel to the common fuel supply pipe at high pressure. The high-pressure fuel pump, pressure sensor and ECU form a closed-loop operation to achieve precise control of the oil pressure in the common fuel supply pipe, which completely changes the phenomenon that the fuel supply pressure changes with the engine speed. Its main features are as follows:

[0008] 1. The injection timing is completely separated from the fuel metering, and the injection pressure and injection process are controlled by the ECU in a timely manner.

[0009] 2. The injection pressure, injection start point and duration of each cylinder can be adjusted according to the engine working conditions, so as to pursue the best control point of injection.

[0010] 3. It can achieve very high injection pressure and can realize diesel pre-injection.

[0011] Since the high-pressure common rail diesel engine system has been used on land with good results, the equipment operating under such conditions is still generally equipped with traditional diesel engine systems. Therefore, it is particularly important to transform the high-pressure common rail diesel engine system that has been widely used on land into an explosion-proof system suitable for underground operations and form a new high-pressure common rail explosion-proof diesel engine system. Summary of the invention

[0012] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an explosion-proof modification of the high-pressure common rail diesel engine system that has been widely used on land, suitable for underground operations, to form a new high-pressure common rail explosion-proof diesel engine system.

[0013] The object of the present invention is achieved in that:

[0014] A high-pressure common rail explosion-proof diesel engine system, comprising an explosion-proof diesel engine body, a high-pressure common rail system, an air filter, an explosion-proof supercharger, an intercooler, an exhaust gas treatment box and a heat sink, wherein the above components are connected through a plurality of air pipelines and a plurality of water pipelines; the intercooler and the heat sink are installed in one body;

[0015] An explosion-proof intake manifold is arranged on the intake end of the explosion-proof diesel engine body, and an explosion-proof exhaust manifold is arranged on the exhaust end of the explosion-proof diesel engine body. All air pipelines connected before the explosion-proof intake manifold are collectively referred to as the intake system, and all air pipelines connected after the explosion-proof exhaust manifold are collectively referred to as the exhaust system; the intake system, the exhaust system and the air path of the explosion-proof diesel engine body located therebetween constitute the entire high-pressure common rail explosion-proof diesel engine air circulation system.

[0016] As a preferred embodiment, the air intake system includes, from front to back, an air filter, an explosion-proof supercharger, an intercooler, an intake damper assembly and an intake flame arrester until an explosion-proof intake manifold, wherein the air outlet of the air filter is connected to the air inlet of the explosion-proof supercharger, the pressurized air outlet of the explosion-proof supercharger is connected to the air inlet of the intercooler via a first pressurized air intake pipe, the air outlet of the intercooler is connected to the air inlet of the intake damper assembly via a second pressurized air intake pipe, the air outlet of the intake damper assembly is connected to the air inlet of the intake flame arrester, and the air outlet of the intake flame arrester is connected to the air inlet of the explosion-proof intake manifold.

[0017] As a preferred embodiment, the exhaust system includes an explosion-proof exhaust manifold and an explosion-proof supercharger and then an exhaust gas treatment box from front to back, the exhaust port of the explosion-proof exhaust manifold is connected to the return air port of the explosion-proof supercharger, and the exhaust port of the explosion-proof supercharger is connected to the air inlet of the exhaust gas treatment box through an exhaust bellows.

[0018] As a preferred embodiment, a first water outlet at the bottom of the radiator water tank leads out an explosion-proof exhaust manifold cooling water circuit, and after passing through several components, the explosion-proof exhaust manifold cooling water circuit returns to the first water return end at the top of the radiator water tank; wherein the explosion-proof exhaust manifold cooling water circuit includes, from front to back, an explosion-proof exhaust manifold water supply pump inlet pipeline, an explosion-proof exhaust manifold water supply pump, an explosion-proof exhaust manifold water supply pump outlet pipeline, an explosion-proof exhaust manifold, an explosion-proof supercharger water inlet pipeline, an explosion-proof supercharger, an explosion-proof supercharger water outlet pipeline, an exhaust bellows, and an exhaust bellows return pipeline, the water inlet end of the explosion-proof exhaust manifold water supply pump inlet pipeline is connected to a first water outlet at the bottom of the radiator water tank, and the water outlet end of the explosion-proof exhaust manifold water supply pump inlet pipeline is connected to the explosion-proof exhaust manifold The water inlet end of the water supply pump and the water outlet end of the explosion-proof exhaust manifold water supply pump are connected to the water inlet end of the explosion-proof exhaust manifold water supply pump outlet pipeline, the water outlet end of the explosion-proof exhaust manifold water supply pump outlet pipeline is connected to the water inlet end of the explosion-proof exhaust manifold, the water outlet end of the explosion-proof exhaust manifold is connected to the water inlet end of the explosion-proof supercharger inlet pipeline, the water outlet end of the explosion-proof supercharger inlet pipeline is connected to the water inlet end of the explosion-proof supercharger, the water outlet end of the explosion-proof supercharger is connected to the water inlet end of the explosion-proof supercharger outlet pipeline, the water outlet end of the explosion-proof supercharger outlet pipeline is connected to the water inlet end of the outer water jacket of the exhaust bellows, the water outlet end of the outer water jacket of the exhaust bellows is connected to the water inlet end of the exhaust bellows return pipeline, and the water outlet end of the exhaust bellows return pipeline is connected to a first return water end at the top of the radiator water tank.

[0019] As a preferred embodiment, the high-pressure common rail system includes a common rail pipeline, the common rail pipeline is connected to four oil outlet pipelines, the four oil outlet pipelines are respectively connected to four fuel injectors, and the fuel injectors are provided with solenoid valves. The fuel injectors are installed on the oil inlets of each cylinder body of the explosion-proof diesel engine body. The common rail pipeline is also connected to an oil inlet pipeline and an oil return pipeline, the oil inlet pipeline and the oil return pipeline are respectively connected to the oil outlet and the oil return port of the oil pump, and the oil pump is connected to the fuel tank.

[0020] As a preference, a second water outlet at the bottom of the radiator water tank leads to an explosion-proof diesel engine main body cooling water channel, which returns to the second water return end at the top of the radiator water tank after passing through several components.

[0021] As a preferred embodiment, the intercooler device includes an intercooler heat exchange chamber body, and connecting angle steels are arranged on the left and right sides of the intercooler heat exchange chamber body, and the intercooler heat exchange chamber body is connected to the side of the radiator water tank away from the explosion-proof diesel engine body through the two connecting angle steels, and the top of the intercooler heat exchange chamber body is provided with an intercooler first interface and an intercooler second interface, wherein the intercooler first interface is the air inlet of the intercooler device, the intercooler first interface is connected to the first boost air inlet pipe, the intercooler second interface is the air outlet of the intercooler device, and the intercooler second interface is connected to the second boost air inlet pipe, the caliber of the intercooler air inlet connecting section located at the top of the intercooler heat exchange chamber body gradually decreases inward from the intercooler first interface, and the caliber of the intercooler air outlet connecting section located at the top of the intercooler heat exchange chamber body gradually decreases inward from the intercooler second interface.

[0022] As a preferred embodiment, the radiator water tank includes a core body, and the top shell of the radiator water tank, the bottom shell of the radiator water tank, the left side plate of the radiator water tank and the right side plate of the radiator water tank are respectively connected to the top, bottom, left and right sides of the core body, and the left side plate of the radiator water tank and the right side plate of the radiator water tank are respectively tightly attached to the left and right sides of the core body, the top shell cover of the radiator water tank is arranged on the top of the core body, and the top shell of the radiator water tank is in a hollow state, and an upper sealing gasket is also arranged between the bottom of the top shell of the radiator water tank and the top of the core body, and two compound water inlet covers are arranged on the top of the top shell of the radiator water tank, and one side of the top shell of the radiator water tank is connected to the first water return end and the second water return end, the bottom shell of the radiator water tank is mounted on the bottom of the core body, and the bottom shell of the radiator water tank is in a hollow state, and an oil cooler is arranged inside the bottom shell of the radiator water tank, and the radiator water A lower sealing gasket is also arranged between the bottom shell of the box and the bottom of the core body, two drain switches are arranged on one side of the bottom shell of the radiator water tank, and the other side of the bottom shell of the radiator water tank is connected to the first water outlet end and the second water outlet end, and handles are arranged on the upper half of the outer side surfaces of the left side plate of the radiator water tank and the right side plate of the radiator water tank, and a radiator water tank support base is arranged on the lower half of the outer side surfaces of the left side plate of the radiator water tank and the right side plate of the radiator water tank, and reinforcing ribs are arranged at the connection between the radiator water tank support base and the left side plate of the radiator water tank and the right side plate of the radiator water tank, and an air guide cover is arranged on the side of the radiator water tank close to the main body of the explosion-proof diesel engine, and the four sides of the air guide cover are respectively connected to the edges of the top shell of the radiator water tank, the bottom shell of the radiator water tank, the left side plate of the radiator water tank and the right side plate of the radiator water tank.

[0023] As a preferred embodiment, the exhaust gas treatment box includes an exhaust gas treatment box body, the right section inside the exhaust gas treatment box body is an air intake section, and the left section inside the exhaust gas treatment box body is an air outlet section, the air intake section and the air outlet section are separated by a partition, the front and rear ends of the partition are respectively connected to the front and rear inner walls of the exhaust gas treatment box body, the upper and lower ends of the partition are respectively away from the upper and lower inner walls of the exhaust gas treatment box body by a distance, a float is arranged in the air outlet section of the exhaust gas treatment box body, the lower end of the float is connected to a float screw through a float connecting pin, one end of the float screw is threadedly connected to a water replenishment connecting rod, the water replenishment connecting rod is connected to a water replenishment valve body, the water replenishment valve body is connected to the left side wall of the exhaust gas treatment box body through a water replenishment seat, the outer end of the water replenishment valve body is connected to the water replenishment joint, and a drain port is arranged at the lower end of the left side wall of the exhaust gas treatment box body, and a plate-type ball valve is arranged on the drain port.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention transforms the high-pressure common rail diesel engine system that has been widely used on land into an explosion-proof system, which is suitable for underground operations, forming a new high-pressure common rail explosion-proof diesel engine system, which has the advantages of energy saving and emission reduction, noise reduction, and improved safety performance. Through the strict control of various parameters, efficient and environmentally friendly operation of underground operations is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a high-pressure common rail explosion-proof diesel engine system.

[0027] Figure 2 for Figure 1 Schematic diagram from another perspective.

[0028] Figure 3 This is a schematic diagram of the high-pressure common rail system installed on the main body of an explosion-proof diesel engine.

[0029] Figure 4 Schematic diagram of the high-pressure common rail system.

[0030] Figure 5 This is a schematic diagram of the intercooler and radiator water tank.

[0031] Figure 6 for Figure 5 Schematic diagram from another perspective.

[0032] Figure 7 Schematic diagram of the intercooler.

[0033] Figure 8 Schematic diagram of the exhaust gas treatment box.

[0034] Fig. 9 for Figure 8 Front view after removing the front panel of the exhaust treatment box.

[0035] Fig.10 for Figure 8 A three-dimensional image after removing the front panel of the exhaust treatment box.

[0036] Fig.11 It is a half-section front view of the air intake section in the exhaust gas treatment box.

[0037] Fig.12 It is a half-section stereoscopic view of the air intake section in the exhaust gas treatment box.

[0038] Fig.13 This is a stereoscopic view of the air intake section in the exhaust gas treatment box from another perspective.

[0039] Fig.14 Schematic diagram of the flow-equalizing gas guide mechanism.

[0040] Fig.15 Schematic diagram of the explosion-proof fence installed on the fence seat.

[0041] Fig.16 This is a schematic diagram of an explosion-proof fence.

[0042] Fig.17 Schematic diagram of strip pressing block.

[0043] Fig.18 Schematic diagram of the intake air door assembly.

[0044] Fig.19 This is a reference table for selecting rail pressure.

[0045] Fig. 20 This is a reference table for selecting the basic injection angle.

[0046] Fig.21 Reference table for selecting the water temperature corrected injection angle.

[0047] in:

[0048] Explosion-proof diesel engine body 100, explosion-proof intake manifold 101, explosion-proof exhaust manifold 102

[0049] High-pressure common rail system 200, common rail pipeline 201, oil outlet pipeline 202, fuel injection nozzle 203, solenoid valve 204, oil inlet pipeline 205, oil return pipeline 206, oil pump 207

[0050] Air filter 300

[0051] Explosion-proof supercharger 400

[0052] Intercooler 500, intercooler heat exchange chamber body 501, connecting angle steel 502, intercooler first interface 503, intercooler second interface 504;

[0053] Exhaust treatment box 600, exhaust treatment box body 601, partition 602, intake flange 603, exhaust intake pipe 604, first exhaust pipe 605, first exhaust pipe notch 605.1, exhaust cover 606, second exhaust pipe 607, third exhaust pipe 608, third exhaust pipe notch 608.1, flow-equalizing air guide mechanism 609, circular baffle 610, vent 610.1, fence seat 611, fence clamping mechanism 612, hinged column 612.1, threaded column 612.2, pressure strip 612.3, pin 612.4, nut 612.5, guide plate 612.6, guide column 612.7, compression spring 612.8, strip pressure block 612.9, pressure block pin 612.10, explosion-proof fence 613, limit column 614, pressure plate 615, fence upper cover 616, exhaust pipe 617, float 618, float connecting pin 619, float screw 620, water supply connecting rod 621, water supply valve body 622, water supply seat 623, water outlet 624, sheet ball valve 625, rear cover 626, water supply joint 627;

[0054] Intake system 700, first supercharged intake pipe 701, second supercharged intake pipe 702

[0055] Exhaust System 800

[0056] Inlet damper assembly 900, damper duct 901, air inlet connection flange 902, air outlet connection flange 903, damper support seat 904, damper cylinder 905, damper 906, damper rotating rod 907, swing rod 908;

[0057] Inlet flame arrester 1000

[0058] Explosion-proof exhaust manifold cooling water circuit 1100, explosion-proof exhaust manifold water supply pump water inlet pipeline 1101, explosion-proof exhaust manifold water supply pump 1102, explosion-proof exhaust manifold water supply pump outlet pipeline 1103, explosion-proof supercharger water inlet pipeline 1104, explosion-proof supercharger water outlet pipeline 1105, exhaust bellows return pipeline 1106

[0059] Exhaust bellows 1200

[0060] Explosion-proof diesel engine main cooling water circuit 1300

[0061] Radiating water tank 1400, core 1401, radiating water tank top shell 1402, radiating water tank bottom shell 1403, radiating water tank left side plate 1404, radiating water tank right side plate 1405, upper sealing gasket 1406, compound water inlet cover 1407, lower sealing gasket 1408, drain switch 1409, handle 1410, radiating water tank support base 1411, and air guide cover 1412. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] See also Figure 1-Figure 18 The present invention relates to a high-pressure common rail explosion-proof diesel engine system, which includes an explosion-proof diesel engine body 100, a high-pressure common rail system 200, an air filter 300, an explosion-proof supercharger 400, an intercooler 500, an exhaust gas treatment box 600 and a heat dissipation water tank 1400, wherein the above-mentioned components are connected through a plurality of air pipelines and a plurality of water pipelines; the intercooler 500 and the heat dissipation water tank 1400 are installed in one body;

[0064] An explosion-proof intake manifold 101 is provided on the intake end of the explosion-proof diesel engine body 100, and an explosion-proof exhaust manifold 102 is provided on the exhaust end of the explosion-proof diesel engine body 100. All air pipelines connected before the explosion-proof intake manifold 101 are collectively referred to as an intake system 700, and all air pipelines connected after the explosion-proof exhaust manifold 102 are collectively referred to as an exhaust system 800; the intake system 700, the exhaust system 800 and the air path of the explosion-proof diesel engine body 100 located therebetween constitute the entire high-pressure common rail explosion-proof diesel engine air circulation system;

[0065] The air intake system 700 includes, from front to back, an air filter 300, an explosion-proof supercharger 400, an intercooler 500, an air intake damper assembly 900, and an air intake flame arrester 1000, and finally an explosion-proof intake manifold 101, wherein the air outlet of the air filter 300 is connected to the air inlet of the explosion-proof supercharger 400, the pressurized air outlet of the explosion-proof supercharger 400 is connected to the air inlet of the intercooler 500 through a first pressurized air intake pipe 701, the air outlet of the intercooler 500 is connected to the air inlet of the air intake damper assembly 900 through a second pressurized air intake pipe 702, the air outlet of the air intake damper assembly 900 is connected to the air inlet of the air intake flame arrester 1000, and the air outlet of the air intake flame arrester 1000 is connected to the air inlet of the explosion-proof intake manifold 101;

[0066] The exhaust system 800 includes an explosion-proof exhaust manifold 102 and an explosion-proof supercharger 400 from front to back, and then to an exhaust gas treatment box 600. The exhaust port of the explosion-proof exhaust manifold 102 is connected to the return air port of the explosion-proof supercharger 400, and the exhaust port of the explosion-proof supercharger 400 is connected to the air inlet of the exhaust gas treatment box 600 through an exhaust bellows 1200.

[0067] The first water outlet at the bottom of the heat dissipation water tank 1400 leads to an explosion-proof exhaust manifold cooling water path 1100, and after passing through several components, the explosion-proof exhaust manifold cooling water path 1100 returns to the first water return end at the top of the heat dissipation water tank 1400; wherein the explosion-proof exhaust manifold cooling water path 1100 includes, from front to back, an explosion-proof exhaust manifold water supply pump water inlet pipeline 1101, an explosion-proof exhaust manifold water supply pump 1102, and an explosion-proof exhaust manifold water supply pump outlet pipeline 1103. 1103, explosion-proof exhaust manifold 102, explosion-proof supercharger water inlet pipeline 1104, explosion-proof supercharger 400, explosion-proof supercharger water outlet pipeline 1105, exhaust bellows 1200 and exhaust bellows return water pipeline 1106, the water inlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline 1101 is connected to a first water outlet end at the bottom of the radiator water tank 1400, and the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline 1101 is connected to the explosion-proof exhaust manifold water supply pump The water inlet end of the explosion-proof exhaust manifold water supply pump 1102 is connected to the water inlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline 1103, the water outlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline 1103 is connected to the water inlet end of the explosion-proof exhaust manifold 102, the water outlet end of the explosion-proof exhaust manifold 102 is connected to the water inlet end of the explosion-proof supercharger water inlet pipeline 1104, and the water outlet end of the explosion-proof supercharger water inlet pipeline 1104 is connected to the water inlet end of the explosion-proof supercharger 400. The water outlet end of the explosion-proof supercharger 400 is connected to the water inlet end of the explosion-proof supercharger water outlet pipeline 1105, the water outlet end of the explosion-proof supercharger water outlet pipeline 1105 is connected to the water inlet end of the outer water jacket of the exhaust bellows 1200, the water outlet end of the outer water jacket of the exhaust bellows 1200 is connected to the water inlet end of the exhaust bellows return water pipeline 1106, and the water outlet end of the exhaust bellows return water pipeline 1106 is connected to a first return water end at the top of the heat dissipation water tank 1400;

[0068] The high-pressure common rail system 200 includes a common rail pipeline 201, and the common rail pipeline 201 is connected to four oil outlet pipelines 202, and the four oil outlet pipelines 202 are respectively connected to four fuel injectors 203, and the fuel injectors are provided with solenoid valves 204. The fuel injectors 203 are installed on the fuel inlets of each cylinder body of the explosion-proof diesel engine body 100. The common rail pipeline 201 is also connected to an oil inlet pipeline 205 and an oil return pipeline 206, and the oil inlet pipeline 205 and the oil return pipeline 206 are respectively connected to the oil outlet and the oil return port of the oil pump 207, and the oil pump 207 is connected to the fuel tank.

[0069] The second water outlet at the bottom of the heat dissipation water tank 1400 leads to an explosion-proof diesel engine main body cooling water path, which returns to the second water return end at the top of the heat dissipation water tank 1400 after passing through several components; wherein the explosion-proof diesel engine main body cooling water path includes, from front to back, an explosion-proof diesel engine main body water inlet pipeline, an explosion-proof diesel engine main body water supply pump, an explosion-proof diesel engine main body internal water path, a temperature controller, and an explosion-proof diesel engine main body water return pipeline;

[0070] The intercooler 500 includes an intercooler heat exchange chamber body 501, and connecting angle steels 502 are arranged on the left and right sides of the intercooler heat exchange chamber body 501. The intercooler heat exchange chamber body 501 is connected to the side of the heat dissipation water tank 1400 away from the explosion-proof diesel engine body 100 through the two connecting angle steels 502. The top of the intercooler heat exchange chamber body 501 is provided with an intercooler first interface 503 and an intercooler second interface 504, wherein the intercooler first interface 503 is the air inlet of the intercooler device 500, and the intercooler second interface 504 is provided. The first intercooler interface 503 is connected to the first boost air intake pipe 701, the second intercooler interface 504 is the air outlet of the intercooler device 500, the second intercooler interface 504 is connected to the second boost air intake pipe 702, the diameter of the intercooler air intake connecting section located at the top of the intercooler heat exchange chamber body 501 gradually decreases inward from the first intercooler interface 503, and the diameter of the intercooler air outlet connecting section located at the top of the intercooler heat exchange chamber body 501 gradually decreases inward from the second intercooler interface 503, thereby making the air intake and exhaust smoother.

[0071] The heat dissipation water tank 1400 comprises a core body 1401, wherein the top shell 1402, the bottom shell 1403, the left side plate 1404 and the right side plate 1405 of the heat dissipation water tank are connected to the top and the bottom of the core body 1401, respectively. The left side plate 1404 and the right side plate 1405 of the heat dissipation water tank are respectively closely attached to the left and right sides of the core body 1401. The top shell 1402 of the heat dissipation water tank is covered on the top of the core body 1401 and is hollow. An upper sealing gasket 1406 is further provided between the bottom of the top shell 1402 of the heat dissipation water tank and the top of the core body 1401. Two compound water inlet covers 1407 are provided on the top of the top shell 1402 of the heat dissipation water tank. A first water return end and a second water return end are connected to one side of the top shell 1402 of the heat dissipation water tank. The bottom shell 1403 of the heat dissipation water tank is mounted on the core body 140 1 bottom and the radiator bottom shell 1403 is in a hollow state, an oil cooler is arranged inside the radiator bottom shell 1403, a lower sealing gasket 1408 is also arranged between the radiator bottom shell 1403 and the bottom of the core 1401, two drain switches 1409 are arranged on one side of the radiator bottom shell 1403, and the other side of the radiator bottom shell 1403 is connected to a first water outlet and a second water outlet, a handle 1410 is arranged on the upper half of the outer side of the left side plate 1404 and the right side plate 1405 of the radiator water tank, a radiator support base 1411 is arranged on the lower half of the outer side of the left side plate 1404 and the right side plate 1405 of the radiator water tank, and reinforcing ribs are arranged at the connection between the radiator support base 1411 and the left side plate 1404 and the right side plate 1405 of the radiator water tank. An air guide cover 1412 is provided on one side of the radiator water tank close to the explosion-proof diesel engine body 100, and the four sides of the air guide cover 1412 are respectively connected to the edges of the radiator water tank top shell 1402, the radiator water tank bottom shell 1403, the radiator water tank left side plate 1404 and the radiator water tank right side plate 1405.

[0072] The exhaust gas treatment box 600 includes an exhaust gas treatment box body 601, the right section of the exhaust gas treatment box body 601 is an air intake section, the left section of the exhaust gas treatment box body 601 is an air outlet section, the air intake section and the air outlet section are separated by a partition 602, the front and rear ends of the partition 602 are respectively connected to the front and rear inner walls of the exhaust gas treatment box body 601, the upper and lower ends of the partition 602 are respectively separated from the upper and lower inner walls of the exhaust gas treatment box body 601 by a distance, the right section of the top plate of the exhaust gas treatment box body 601 is provided with an air intake flange 603, the air intake flange 603 is connected to the exhaust gas treatment box body 601 with an exhaust gas intake pipe 604, the lower end of the exhaust gas intake pipe 604 is separated from the bottom of the exhaust gas treatment box body 601 by a distance, and the exhaust gas intake pipe 604 is provided with a tail gas intake pipe 604. A first exhaust pipe 605 is surrounded by the periphery of the middle and lower section of 604, and the bottom of the first exhaust pipe 605 is in contact with the bottom of the exhaust treatment box 601. An exhaust cover plate 606 is arranged on the exhaust inlet pipe 604 above the first exhaust pipe 605, and the exhaust cover plate 606 is a distance away from the first exhaust pipe 605. A second exhaust pipe 607 is connected downward to the periphery of the exhaust cover plate 606. The diameter of the second exhaust pipe 607 is larger than the diameter of the first exhaust pipe 605, and the lower opening height of the second exhaust pipe 607 is lower than the upper opening height of the first exhaust pipe 605. A third exhaust pipe 608 is surrounded by the periphery of the lower end of the exhaust inlet pipe 604, and the bottom of the third exhaust pipe 608 is in contact with the bottom of the exhaust treatment box 601. The diameter of the third exhaust pipe 608 is smaller than The diameter of the first exhaust pipe 605, the lower end of the exhaust intake pipe 604 is provided with a flow-equalizing air guide mechanism 609, the flow-equalizing air guide mechanism 609 is composed of a plurality of flow-equalizing air guide plates with the same structure, preferably four flow-equalizing air guide plates, the flow-equalizing air guide plates include a rectangular plate structure in the upper section and an arcuate plate structure in the lower section, the rectangular plate structures of the plurality of flow-equalizing air guide plates are welded in a centrally divergent form, the arcuate plate structures of the plurality of flow-equalizing air guide plates are bent in a clockwise direction when viewed from a top view, the outer edge of the arcuate plate structure is tangent to the outer edge of the rectangular plate structure, an arc-shaped notch is provided at the inner edge of the arcuate plate structure, the lower end of the flow-equalizing air guide mechanism 609 extends below the lower end of the exhaust intake pipe 604, the rectangular plate structure of the flow-equalizing air guide plate of the flow-equalizing air guide mechanism 609 The outer edge of the structure is connected to the inside of the exhaust gas intake pipe 604; the lower opening of the third exhaust pipe 608 is evenly provided with a third exhaust pipe notch 608.1 of a rectangular structure concave upward, and the lower opening of the first exhaust pipe 605 is evenly provided with a first exhaust pipe notch 605.1 of a rectangular structure concave upward. The third exhaust pipe notch 608.1 is staggered with the first exhaust pipe notch 605.1. The height of the third exhaust pipe notch 608.1 is less than the height of the first exhaust pipe notch 605.1. Preferably, the third exhaust pipe notch 608.1 and the first exhaust pipe notch 605.1 are both four. A circular baffle 610 is arranged inside the third exhaust pipe 608. The height of the circular baffle 610 is equal to the height of the third exhaust pipe notch 608.1, the circular baffle 610 is provided with a plurality of vent holes 610.1 that penetrate from top to bottom, preferably four vent holes 610.1, the position of the vent hole 610.1 corresponds to the position of the first exhaust pipe notch 605.1, that is, the position of the vent hole 610.1 is misaligned with the position of the third exhaust pipe notch 608.1;.

[0073] A fence seat 611 is arranged on the left section of the top plate of the exhaust gas treatment box 601. The fence seat 611 is a rectangular frame structure. The left and right frames of the fence seat 611 are respectively provided with a longitudinally arranged fence pressing mechanism 612. An explosion-proof fence 613 is arranged upwardly at the inner edge of the rectangular frame structure of the fence seat 611. Left and right limiting columns 614 are arranged on the front frame of the fence seat 611. The limiting columns 614 are used for front side positioning of the explosion-proof fence 613 during installation. A rectangular frame structure pressing plate 615 is connected between the two fence pressing mechanisms 612. The pressing plate 615 is used for the explosion-proof fence 613. 13, the fence clamping mechanism 612 includes a hinged column 612.1 at the front end and a threaded column 612.2 at the rear end, the tops of the hinged column 612.1 and the threaded column 612.2 are directly connected with a pressure strip 612.3, the front end of the pressure strip 612.3 is connected to the top of the hinged column 612.1 through a pin 612.4, the rear end of the pressure strip 612.3 is provided with an opening in the up and down directions, the rear end opening of the pressure strip 612.3 is sleeved on the outer side of the top thread of the threaded column 612.2 and is locked by a nut 612.5, and the left and right sides of the fence seat 611 are The frame is also provided with a longitudinally arranged guide plate 612.6, and two front and rear guide posts 612.7 are arranged upward on the guide plate 612.6. A compression spring 612.8 is mounted on the guide post 612.7. The rear end of the guide plate 612.6 is mounted outside the bottom end of the threaded post 612.2. The positioning holes of the left and right frames of the pressure plate 615 are respectively mounted on the guide posts 612.7 of the left and right fence clamping mechanisms 612, and the pressure plate 615 is located above the compression spring 612.8. The middle part of the pressure strip 612.3 is provided with a strip-shaped hollow that runs through in the up and down directions. A strip pressure block 612.9 is provided, and the middle part of the strip pressure block 612.9 is connected to the middle part of the pressure strip 612.3 by a horizontal pressure block pin 612.10. The strip pressure block 612.9 is higher in the middle and lower at both ends along its length direction, so that the two bottom ends of the strip pressure block 612.9 can better contact the left and right sides of the pressure plate 615 during the downward pressing process, so that the force is uniform. A fence upper cover plate 616 is provided above the explosion-proof fence 613, and a temperature sensor 626 is connected to the fence upper cover plate 616. An exhaust pipe 626 facing the front and lower side is connected to the fence upper cover plate 616.

[0074] A rear cover plate 617 is provided on the rear side plate of the exhaust gas treatment box 601, and a float 618 is provided in the air outlet section of the exhaust gas treatment box 601. The lower end of the float 618 is connected to a float screw 620 via a float connecting pin 619. One end of the float screw 620 is threadedly connected to a water replenishment connecting rod 621. The water replenishment connecting rod 621 is connected to a water replenishment valve body 622. The water replenishment valve body 622 is connected to the left side wall of the exhaust gas treatment box 601 via a water replenishment seat 623. The outer end of the water replenishment valve body 622 is connected to a water replenishment joint 627. A drain port 624 is provided at the lower end of the left side wall of the exhaust gas treatment box 601, and a plate-type ball valve 625 is provided on the drain port 624.

[0075] The air intake damper assembly 900 includes a damper duct 901, the air inlet and air outlet of the damper duct 901 are respectively provided with an air inlet connecting flange 902 and an air outlet connecting flange 903, the outer top of the damper duct 901 is vertically connected to a damper support seat 904 in its horizontal direction, a damper cylinder 905 is provided above the damper support seat 904, a circular damper 906 that cooperates with the inner wall of the damper duct 901 is provided in the damper duct 901, the damper 906 is upwardly connected to a damper rotating rod 907, the damper rotating rod 907 extends upward from the damper duct 901 and the damper support seat 904, the telescopic end of the damper cylinder 905 is connected to the upper end of the damper rotating rod 907 through a rocker rod 908, and the opening and closing of the damper 906 can be controlled by the telescopic movement of the damper cylinder 905.

[0076] A control method for a high-pressure common rail explosion-proof diesel engine system:

[0077] The high-pressure common rail explosion-proof diesel engine system is equipped with a speed sensor, a rail pressure sensor, an intake pressure temperature sensor, a coolant temperature sensor, etc. The speed sensor is a crankshaft sensor installed on the flywheel housing. The speed sensor measures the engine speed, the rail pressure sensor measures the rail pressure of the high-pressure common rail, the intake pressure temperature sensor measures the intake pressure and intake temperature, and the coolant temperature sensor measures the coolant temperature.

[0078] The real-time data is transmitted to the ECU through the measurement of the above parameters. The ECU calls the following tables, and the control system performs calculations and then controls the opening and closing and opening degree of each valve.

[0079] Please refer to the instructions for the selection of rail pressure. Fig.19 Table 1 in:

[0080] The real-time rail pressure of the high-pressure common rail is controlled by the real-time speed and oil volume in Table 1; a rail pressure sensor is provided on the common rail pipeline, and the rail pressure is detected in real time by the rail pressure sensor to obtain the real-time rail pressure value, and the theoretical rail pressure value is obtained by the speed data of the cam and the crankshaft. If there is a gap between the real-time rail pressure value and the theoretical rail pressure value, it is fed back to the high-pressure oil pump, and the real-time rail pressure value is adjusted by adjusting the high-pressure oil pump so that it tends to the theoretical rail pressure value.

[0081] The real-time injection angle of the fuel injector of the high-pressure common rail system of the high-pressure common rail explosion-proof diesel engine system under the real-time state at the corresponding moment is calculated according to the real-time parameters; the real-time injection angle is controlled by the solenoid valve inside the fuel injector.

[0082] Where: Real-time injection angle = basic injection angle + water temperature correction injection angle * water temperature correction coefficient

[0083] Reference for selection of basic spray angle Fig. 20 Table 2 in:

[0084] Reference for selection of water temperature correction injection angle Fig.21 Table 3:

[0085] The water temperature correction factor is selected as follows:

[0086] The water temperature correction coefficient is 1.5 at -30 degrees Celsius, 1.25 at -20 degrees Celsius, 1 at -10 degrees Celsius, 0 at 0 degrees Celsius, and 0 when it exceeds 0 degrees Celsius. The first type of linear change occurs between -30 degrees Celsius and -10 degrees Celsius, and the second type of linear change occurs between -10 degrees Celsius and 0 degrees Celsius.

[0087] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A high-pressure common rail explosion-proof diesel engine system, Features It comprises an explosion-proof diesel engine body (100), a high-pressure common rail system (200), an air filter (300), an explosion-proof supercharger (400), an intercooler (500), an exhaust gas treatment box (600) and a heat sink (1400), wherein the various components are connected via a plurality of air pipelines and a plurality of water pipelines; the intercooler (500) and the heat sink (1400) are installed in one body; An explosion-proof intake manifold (101) is provided on the intake end of the explosion-proof diesel engine body (100), an explosion-proof exhaust manifold (102) is provided on the exhaust end of the explosion-proof diesel engine body (100), all air pipelines connected before the explosion-proof intake manifold (101) are collectively referred to as an intake system (700), and all air pipelines connected after the explosion-proof exhaust manifold (102) are collectively referred to as an exhaust system (800); the intake system (700), the exhaust system (800) and the air path of the explosion-proof diesel engine body (100) located therebetween constitute the entire high-pressure common rail explosion-proof diesel engine air circulation system; The air intake system (700) includes, from front to back, an air filter (300), an explosion-proof supercharger (400), an intercooler (500), an air intake damper assembly (900), and an air intake flame arrester (1000) until an explosion-proof intake manifold (101), wherein the air outlet of the air filter (300) is connected to the air inlet of the explosion-proof supercharger (400), and the pressurized air outlet of the explosion-proof supercharger (400) is connected to the explosion-proof supercharger (400) through the first A boost air intake pipe (701) is connected to the air intake of the intercooler (500), the air outlet of the intercooler (500) is connected to the air intake of the air intake damper assembly (900) via a second boost air intake pipe (702), the air outlet of the air intake damper assembly (900) is connected to the air intake of the air intake flame arrester (1000), and the air outlet of the air intake flame arrester (1000) is connected to the air intake of the explosion-proof intake manifold (101); The exhaust system (800) includes, from front to back, an explosion-proof exhaust manifold (102), an explosion-proof supercharger (400), and an exhaust gas treatment box (600); the exhaust port of the explosion-proof exhaust manifold (102) is connected to the air return port of the explosion-proof supercharger (400); and the exhaust port of the explosion-proof supercharger (400) is connected to the air inlet of the exhaust gas treatment box (600) via an exhaust bellows (1200); The first water outlet at the bottom of the heat dissipation water tank (1400) leads to an explosion-proof exhaust manifold cooling water path (1100), and after passing through a number of components, the explosion-proof exhaust manifold cooling water path (1100) returns to the first water return end at the top of the heat dissipation water tank (1400); wherein the explosion-proof exhaust manifold cooling water path (1100) comprises, from front to back, an explosion-proof exhaust manifold water supply pump water inlet pipeline (1101), an explosion-proof exhaust manifold water supply pump (1102), and an explosion-proof exhaust manifold water supply pump outlet pipeline (1103). 03), an explosion-proof exhaust manifold (102), an explosion-proof supercharger water inlet pipeline (1104), an explosion-proof supercharger (400), an explosion-proof supercharger water outlet pipeline (1105), an exhaust bellows (1200), and an exhaust bellows water return pipeline (1106), the water inlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline (1101) is connected to a first water outlet end at the bottom of the radiator water tank (1400), and the water outlet end of the explosion-proof exhaust manifold water supply pump water inlet pipeline (1101) is connected to the explosion-proof exhaust manifold water supply pump ... The water inlet end of the explosion-proof exhaust manifold water supply pump (1102) is connected to the water inlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline (1103), the water outlet end of the explosion-proof exhaust manifold water supply pump water outlet pipeline (1103) is connected to the water inlet end of the explosion-proof exhaust manifold (102), the water outlet end of the explosion-proof exhaust manifold (102) is connected to the water inlet end of the explosion-proof supercharger water inlet pipeline (1104), and the water outlet end of the explosion-proof supercharger water inlet pipeline (1104) is connected to the water inlet end of the explosion-proof supercharger (400). A water end, a water outlet end of the explosion-proof supercharger (400) is connected to a water inlet end of a water outlet pipeline (1105) of the explosion-proof supercharger, a water outlet end of the water outlet pipeline (1105) of the explosion-proof supercharger is connected to a water inlet end of an outer water jacket of an exhaust bellows (1200), a water outlet end of the outer water jacket of the exhaust bellows (1200) is connected to a water inlet end of an exhaust bellows return pipeline (1106), and a water outlet end of the exhaust bellows return pipeline (1106) is connected to a first water return end at the top of a heat sink (1400); The high-pressure common rail system (200) comprises a common rail pipeline (201), the common rail pipeline (201) is connected to four oil outlet pipelines (202), the four oil outlet pipelines (202) are respectively connected to four fuel injection nozzles (203), the fuel injection nozzles are provided with solenoid valves (204), the fuel injection nozzles (203) are installed on the fuel inlet ports of each cylinder block of the explosion-proof diesel engine body (100), the common rail pipeline (201) is also connected to an oil inlet pipeline (205) and an oil return pipeline (206), the oil inlet pipeline (205) and the oil return pipeline (206) are respectively connected to the oil outlet port and the oil return port of an oil pump (207), and the oil pump (207) is connected to a fuel tank; A second water outlet at the bottom of the heat dissipation water tank (1400) leads to an explosion-proof diesel engine main body cooling water path (1300), and after passing through a number of components, the explosion-proof diesel engine main body cooling water path (1300) returns to a second water return end at the top of the heat dissipation water tank (1400); The intercooler (500) comprises an intercooler heat exchange chamber body (501), and connecting angle steels (502) are arranged on the left and right sides of the intercooler heat exchange chamber body (501). The intercooler heat exchange chamber body (501) is connected to a side of the heat dissipation water tank (1400) away from the explosion-proof diesel engine body (100) through the two connecting angle steels (502). The top of the intercooler heat exchange chamber body (501) is provided with an intercooler first interface (503) and an intercooler second interface (504), wherein the intercooler first interface (503) is a The intercooler (500) is an air inlet, the intercooler first interface (503) is connected to the first boost air inlet pipe (701), the intercooler second interface (504) is an air outlet of the intercooler (500), the intercooler second interface (504) is connected to the second boost air inlet pipe (702), the diameter of the intercooler air inlet connection section located at the top of the intercooler heat exchange chamber body (501) gradually decreases from the intercooler first interface (503) inwardly, and the diameter of the intercooler air outlet connection section located at the top of the intercooler heat exchange chamber body (501) gradually decreases from the intercooler second interface (504) inwardly; The heat dissipation water tank (1400) comprises a core body (1401), wherein the top shell (1402), the bottom shell (1403), the left side plate (1404) and the right side plate (1405) of the core body (1401) are respectively connected to the top and bottom of the core body (1401), and the bottom shell (1403), the left side plate (1404) and the right side plate (1405) of the heat dissipation water tank are respectively closely attached to the left and right sides of the core body (1401), and the top shell (1402) of the heat dissipation water tank is covered on the top of the core body (1401). ) is in a hollow state, an upper sealing gasket (1406) is further provided between the bottom of the top shell (1402) of the radiator water tank and the top of the core (1401), two compound water inlet covers (1407) are provided on the top of the top shell (1402) of the radiator water tank, one side of the top shell (1402) of the radiator water tank is connected to a first water return end and a second water return end, the bottom shell (1403) of the radiator water tank is mounted on the bottom of the core (1401) and is in a hollow state, an oil cooler is provided inside the bottom shell (1403) of the radiator water tank, and the radiator water A lower sealing gasket (1408) is also provided between the bottom shell (1403) and the bottom of the core (1401); two drain switches (1409) are provided on one side of the bottom shell (1403) of the radiator water tank; a first water outlet and a second water outlet are connected to the other side of the bottom shell (1403) of the radiator water tank; handles (1410) are provided on the upper and lower sections of the outer surfaces of the left side plate (1404) and the right side plate (1405) of the radiator water tank; and the outer surfaces of the left side plate (1404) and the right side plate (1405) of the radiator water tank are The lower half is provided with a radiator water tank support base (1411), and the connection between the radiator water tank support base (1411) and the left side plate (1404) and the right side plate (1405) of the radiator water tank is provided with a reinforcing rib. The radiator water tank is provided with an air guide cover (1412) on the side close to the explosion-proof diesel engine body (100), and the four sides of the air guide cover (1412) are respectively connected to the edges of the radiator water tank top shell (1402), the radiator water tank bottom shell (1403), the radiator water tank left side plate (1404) and the radiator water tank right side plate (1405).

2. A high-pressure common rail explosion-proof diesel engine system according to claim 1, Features The exhaust gas treatment box (600) comprises an exhaust gas treatment box body (601), the right section in the exhaust gas treatment box body (601) is an air inlet section, the left section in the exhaust gas treatment box body (601) is an air outlet section, the air inlet section and the air outlet section are separated by a partition (602), the front and rear ends of the partition (602) are respectively connected to the front and rear inner side walls of the exhaust gas treatment box body (601), the upper and lower ends of the partition (602) are respectively separated from the upper and lower inner side walls of the exhaust gas treatment box body (601) by a distance, and a floating ball (618) is arranged in the air outlet section of the exhaust gas treatment box body (601). The lower end of the float (618) is connected to a float screw (620) via a float connecting pin (619); one end of the float screw (620) is threadedly connected to a water replenishment connecting rod (621); the water replenishment connecting rod (621) is connected to a water replenishment valve body (622); the water replenishment valve body (622) is connected to the left side wall of the exhaust gas treatment box (601) via a water replenishment seat (623); the outer end of the water replenishment valve body (622) is connected to a water replenishment joint (627); a water discharge port (624) is provided at the lower end of the left side wall of the exhaust gas treatment box (601); and a sheet-type ball valve (625) is provided on the water discharge port (624).

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