Intake and exhaust device of a V-type engine

Abstract

The present application relates to an intake and exhaust device of a V-type engine, and relates to the field of engine technology. It includes an intake module and an exhaust module; the intake module includes an intake pipe, a turbocharger, an intercooler unit and an intake manifold; the turbocharger and the intercooler unit are both installed on the intake pipe, the outlet end of the intake pipe is connected to the intake end of the intake manifold, and the outlet end of the intake manifold is connected to the intake valve of the V-type engine; the intercooler unit is used to reduce the temperature of high-pressure gas of different temperatures flowing through the turbocharger to a standard temperature; the exhaust module is connected to the exhaust valve of the V-type engine, and is used to discharge the exhaust gas to the outside. The present application has the effect of increasing the service life of the engine.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an intake and exhaust device of a V-type engine. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy. According to the arrangement of the cylinders, the engine can be divided into single-row engine, double-row (V-type) engine and three-row (W-type) engine. Among them, the V-type engine has the advantages of small height and length and stable operation, and is often used as a power element in automobiles. In order to increase the power of the V-type engine without increasing the displacement of the V-type engine, it is usually necessary to install a turbocharger on the intake pipe of the V-type engine. Since the supercharged gas has a very high temperature, directly entering the cylinder cavity will reduce the service life of the V-type engine. Therefore, it is necessary to install an intercooler between the turbocharger and the intake manifold to reduce the temperature of the supercharged gas and increase the service life of the V-type engine.

[0003] In the related technology, a plurality of straight pipes for the pressurized gas to flow into the intake manifold are arranged inside the intercooler, and fins are arranged between two adjacent straight pipes. After the gas is pressurized by the turbocharger, the high-temperature and high-pressure gas flows into the straight pipes, so that the high temperature is transferred to the fins. As the car is driving, the wind will blow over the fins, thereby taking away the high temperature on the fins and cooling the high-temperature and high-pressure gas.

[0004] Regarding the above-mentioned related technologies, since the car needs to change speed during driving, the power output of the cylinder will change, and then the exhaust gas flow rate discharged from the cylinder will change. These exhaust gases will change the impeller speed of the turbocharger. Since the impeller is coaxially connected to the turbine, the turbine speed also changes accordingly, so that the gas pressure after the turbocharger is supercharged is different, and the temperature of the supercharged gas also changes accordingly. After the high-pressure gases of different temperatures flow through the intercooler for cooling, there is a situation where the temperature of the high-pressure gas flowing into the intake manifold does not meet the cooling standard. After this part of the high-pressure gas enters the cylinder, it will affect the service life of the engine. Summary of the invention

[0005] In order to increase the service life of the engine, the present application provides an intake and exhaust device for a V-type engine.

[0006] The present application provides an intake and exhaust device for a V-type engine adopts the following technical solution:

[0007] An intake and exhaust device for a V-type engine, comprising an intake module and an exhaust module;

[0008] The air intake module includes an air intake pipe, a turbocharger, an intercooler unit and an air intake manifold;

[0009] The turbocharger and the intercooler unit are both mounted on the intake pipe, the outlet end of the intake pipe is connected to the intake end of the intake manifold, and the outlet end of the intake manifold is connected to the intake valve of the V-type engine;

[0010] The intercooling unit is used to reduce the temperature of high-pressure gas of different temperatures flowing through the turbocharger to a standard temperature;

[0011] The exhaust module is connected to the exhaust valve of the V-type engine and is used to discharge the exhaust gas to the outside.

[0012] By adopting the above technical scheme, the gas enters from the end of the intake pipe, and is pressurized by the turbocharger. The high-temperature and high-pressure gas is converted into low-temperature and high-pressure gas through the intercooler unit, and then the low-temperature and high-pressure gas enters the cylinder cavity of the engine through the intake manifold. After the cylinder piston does work, the exhaust gas is discharged from the cylinder cavity of the engine through the exhaust module; the designed intake and exhaust device of the V-type engine can cool the high-pressure gas of different temperatures to the standard temperature through the intercooler unit, avoiding the situation that the temperature of the high-pressure gas after cooling is still too high and affects the intake quality of the engine, and also preventing the situation that the temperature of the high-pressure gas after cooling is low and the oil becomes thinner, resulting in a decrease in the lubrication ability of the engine and causing wear to the piston rod of the engine, thereby improving the service life of the engine.

[0013] Optionally, the intercooling unit includes two opposite shells, a plurality of first straight tubes, a first adjusting member disposed on each of the first straight tubes, a plurality of second straight tubes, and a second adjusting member disposed on each of the second straight tubes;

[0014] A plurality of first straight tubes and a plurality of second straight tubes are arranged in parallel, the inner cavities of the two shells are connected through the plurality of first straight tubes or the plurality of second straight tubes, and the sides of the two shells away from each other are respectively connected to the air inlet pipe;

[0015] The first straight pipes are used to cool down the high-pressure gas at a relatively low temperature;

[0016] The second straight pipes are used to cool down the high-pressure gas at a relatively high temperature;

[0017] When the temperature of the high-pressure gas is low, the first regulating member controls the first straight tube inner cavity to open, and the second regulating member controls the second straight tube inner cavity to close;

[0018] When the temperature of the high-pressure gas is high, the first regulating member controls the inner cavity of the first straight tube to be closed, and the second regulating member controls the inner cavity of the second straight tube to be opened.

[0019] By adopting the above technical solution, the designed intercooler unit can, according to the temperature of the high-pressure gas, through the cooperation of the first adjusting member and the second adjusting member, when the temperature of the high-pressure gas is low, open the inner cavity of the first straight tube and close the inner cavity of the second straight tube, so that the high-pressure gas with a low temperature can be cooled through the first straight tube; when the temperature of the high-pressure gas is high and the first straight tube cannot reduce the temperature of the high-pressure gas to the standard temperature, the cooperation of the first adjusting member and the second adjusting member can close the inner cavity of the first straight tube and open the inner cavity of the second straight tube, so that the high-pressure gas with a high temperature can be cooled through the second straight tube.

[0020] Optionally, the path of the high-pressure gas flowing in the inner cavity of the first straight tube is linear, and the path of the high-pressure gas flowing in the inner cavity of the second straight tube is spatially spiral.

[0021] By adopting the above technical solution, compared with the first straight tube, the flow path of the high-pressure gas in the second straight tube is increased, so that the high-pressure gas with a higher temperature can be cooled to the standard temperature in the second straight tube.

[0022] Optionally, the first adjusting member includes a first tube body, a first blocking plate, a first bracket and a first telescopic rod;

[0023] The first tube body is coaxially provided with a first air inlet cavity and a first air outlet cavity, the diameter of the first air inlet cavity is larger than that of the first air outlet cavity, the first bracket is arranged in the first air outlet cavity, the first bracket is provided with a plurality of first through holes for high-pressure gas to pass through, one end of the first telescopic rod is connected to the first bracket, and the other end is connected to the first blocking plate, the first blocking plate is coaxially provided in the first air inlet cavity, and a gap is left between the outer peripheral wall of the first blocking plate and the inner peripheral wall of the first air inlet cavity;

[0024] The first telescopic rod is used to push the first blocking plate away from the first air outlet cavity, and the first blocking plate is used to block the first air outlet cavity.

[0025] By adopting the above technical solution, the first adjusting member is designed. When high-pressure gas with a lower temperature enters the first air inlet cavity, since the temperature of the gas is proportional to the pressure, the pressure of the high-pressure gas with a lower temperature is less than the pressure of the high-pressure gas with a higher temperature. At this time, the first telescopic rod is in a natural state, and the high-pressure gas with a lower temperature can flow into the first air outlet cavity through the first air inlet cavity, and through the first through hole, and finally flow into the inner cavity of the first straight tube for air cooling; when high-pressure gas with a higher temperature enters the first air inlet cavity, since the pressure of the high-pressure gas is relatively large, the first blocking plate moves close to the first air outlet cavity until the first blocking plate blocks the first air outlet cavity. At this time, the length of the telescopic rod is shortened, and the inner cavity of the first straight tube is closed, so that the opening and closing of the inner cavity of the first straight tube can be automatically controlled according to the pressure of the gas.

[0026] Optionally, the second adjusting member includes a second tube body, a second blocking plate, a second bracket and a second telescopic rod;

[0027] The second tube body is coaxially provided with a second air inlet cavity and a second air outlet cavity, the diameter of the second air inlet cavity is smaller than that of the second air outlet cavity, the second bracket is arranged in the second air outlet cavity, the second bracket is provided with a plurality of second through holes for high-pressure gas to pass through, one end of the second telescopic rod is connected to the second bracket, and the other end is connected to the second blocking plate, the second blocking plate is coaxially provided in the second air outlet cavity, and a gap is left between the outer peripheral wall of the second blocking plate and the inner peripheral wall of the second air outlet cavity;

[0028] The second telescopic rod is used to push the second blocking plate to be disposed close to the second air inlet cavity, and the second blocking plate is used to block the second air inlet cavity.

[0029] By adopting the above technical solution, a second regulating member is designed. When high-pressure gas at a lower temperature enters the second air inlet chamber, since temperature is proportional to pressure, the pressure of the high-pressure gas at a lower temperature is less than the pressure of the high-pressure gas at a higher temperature. Under the action of the second telescopic rod, since the pressure of the high-pressure gas at a lower temperature cannot push the second blocking plate to move away from the second air inlet chamber, the second air inlet chamber is in a closed state, and then the second straight tube is in a closed state; when high-pressure gas at a higher temperature enters the second air inlet chamber, since the pressure of the high-pressure gas is greater, the second blocking plate moves away from the second air inlet chamber until the second blocking plate releases the blockage of the second air inlet chamber, and the high-pressure gas can flow into the second straight tube lumen through the second air inlet chamber, thereby realizing the opening of the second straight tube lumen, which is convenient for automatically controlling the opening and closing of the second straight tube lumen according to the pressure of the high-pressure gas.

[0030] Optionally, the first telescopic rod and the second telescopic rod both include a fixed section, a sliding section and a compression spring, the sliding section is slidably connected to the fixed section, the fixed section is connected to the first bracket or the second bracket at one end away from the sliding section, the sliding section is connected to the first blocking plate or the second blocking plate at one end away from the fixed section, and the compression spring is used to push the first blocking plate or the second blocking plate to move in a direction opposite to the flow direction of the high-pressure gas.

[0031] By adopting the above technical solution, the first telescopic rod and the second telescopic rod are designed to be slidably connected with the fixed section through the sliding section, and the compression spring pushes the first blocking plate or the second blocking plate to move in the opposite direction of the flow of the high-pressure gas, thereby facilitating the automatic extension and shortening of the first telescopic rod and the second telescopic rod.

[0032] Optionally, the outer peripheral wall of the first straight tube is provided with an annular first fin.

[0033] By adopting the above technical solution, the designed first fin can increase the outer surface area of ​​the first straight tube, thereby improving the cooling efficiency of the first straight tube.

[0034] Optionally, the outer peripheral wall of the second straight tube is provided with an annular second fin.

[0035] By adopting the above technical solution, the designed second fin can increase the outer surface area of ​​the second straight tube, thereby improving the cooling efficiency of the second straight tube.

[0036] Optionally, the exhaust module includes an exhaust manifold, an exhaust pipe, a three-way catalytic converter and a muffler;

[0037] The air inlet end of the exhaust manifold is connected to the outlet valve of the V-type engine, the air inlet end of the exhaust pipe is connected to the outlet end of the exhaust manifold, the impeller chamber of the turbocharger is connected to the inner cavity of the exhaust pipe, and the three-way catalytic converter and the muffler are installed on the exhaust pipe in sequence.

[0038] By adopting the above technical solution, the designed exhaust manifold can convert harmful gases in the exhaust gas into harmless gases through the three-way catalytic converter, and can weaken the noise in the intake and exhaust pipes through the muffler, thereby protecting the environment and improving the driver's comfort.

[0039] Optionally, two oxygen sensors are provided on the exhaust pipe, and the three-way catalytic converter is located between the two oxygen sensors.

[0040] By adopting the above technical solution, the two designed oxygen sensors can successively measure the oxygen content of the exhaust gas passing through the three-way catalytic converter, so as to monitor whether the three-way catalytic converter is damaged through the detection data of the two oxygen sensors.

[0041] In summary, the present application includes at least one of the following beneficial technical effects:

[0042] 1. A V-type engine intake and exhaust device is designed. Through the cooperation of a first regulating member and a second regulating member, when the temperature of high-pressure gas is low, the inner cavity of the first straight tube is opened and the inner cavity of the second straight tube is closed, so that the high-pressure gas with a low temperature is cooled through the first straight tube; when the temperature of high-pressure gas is high and the first straight tube cannot reduce the temperature of the high-pressure gas to a standard temperature, the inner cavity of the first straight tube is closed and the inner cavity of the second straight tube is opened, so that the high-pressure gas with a high temperature is cooled through the second straight tube to the standard temperature, thereby avoiding the situation that the temperature of the high-pressure gas after cooling is still too high and affects the intake quality of the engine, and also preventing the situation that the temperature of the high-pressure gas after cooling is low and the oil becomes thinner, resulting in a decrease in the lubrication ability of the engine and causing wear on the piston rod of the engine, thereby improving the service life of the engine;

[0043] 2. An intake and exhaust device for a V-type engine is designed, which is slidably connected by a sliding section and a fixed section, and a compression spring pushes the first blocking plate or the second blocking plate to move in the opposite direction of the flow of high-pressure gas, so that the first telescopic rod and the second telescopic rod can be automatically extended and shortened according to the pressure of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of an intake and exhaust device of a V-type engine in an embodiment of the present application;

[0045] Figure 2 is a cross-sectional view of an intercooler unit according to an embodiment of the present application;

[0046] Figure 3 yes Figure 2 A magnified view of part A;

[0047] Figure 4 yes Figure 3 A magnified view of part B;

[0048] Figure 5 yes Figure 3 Magnified view of part C.

[0049] Reference numerals: 1, air intake module; 11, air intake pipe; 12, turbocharger; 13, intercooler unit; 131, housing; 132, first straight pipe; 1321, first fin; 133, second straight pipe; 1331, second fin; 134, first adjusting member; 1341, first pipe body; 1342, first blocking plate; 1343, first bracket; 1344, first air intake cavity; 1345, first air outlet cavity; 1346 , fixed section; 1347, sliding section; 1348, compression spring; 135, second adjusting member; 1351, second tube body; 1352, second blocking plate; 1353, second bracket; 1354, second air inlet cavity; 1355, second air outlet cavity; 14, intake manifold; 15, air filter; 2, exhaust module; 21, exhaust manifold; 22, exhaust pipe; 23, three-way catalytic converter; 24, muffler; 25, oxygen sensor. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1-5 This application is described in further detail.

[0051] The embodiment of the present application discloses an intake and exhaust device of a V-type engine.

[0052] Reference Figure 1An intake and exhaust device of a V-type engine includes an intake module 1 and an exhaust module 2. The intake module 1 is connected to the intake valve of the V-type engine and is used to deliver the pressurized and cooled gas to the cylinder combustion chamber of the engine. The exhaust module 2 is connected to the exhaust valve of the V-type engine and is used to discharge the exhaust gas to the outside.

[0053] Reference Figure 1 The air intake module 1 includes an air intake pipe 11, a turbocharger 12, an intercooler unit 13 and an air intake manifold 14. In order to facilitate filtering of air, the air intake module 1 in this embodiment also includes an air filter 15. The air outlet end of the air intake pipe 11 is connected to the air intake end of the air intake manifold 14 through a pipe joint. The air filter 15, the turbocharger 12 and the intercooler unit 13 are all installed on the air intake pipe 11. The gas flows through the air filter 15, the turbocharger 12 and the intercooler unit 13 in sequence. The air outlet end of the air intake manifold 14 is connected to the air intake valve of the V-type engine through a pipe joint; the intercooler unit 13 is used to reduce the temperature of high-pressure gases of different temperatures flowing through the turbocharger 12 to a standard temperature.

[0054] Reference Figure 1 , Figure 2 as well as Figure 3 The intercooling unit 13 includes two facing shells 131, a plurality of first straight tubes 132, a first adjusting member 134 arranged on each of the first straight tubes 132, a plurality of second straight tubes 133, and a second adjusting member 135 arranged on each of the second straight tubes 133. The plurality of first straight tubes 132 and the plurality of second straight tubes 133 are arranged in parallel. The plurality of first straight tubes 132 and the plurality of second straight tubes 133 are threadedly connected to one side of the two shells 131 close to each other. The inner cavities of the two shells 131 are connected through the plurality of first straight tubes 132 or the plurality of second straight tubes 133. The path of the high-pressure gas flowing in the inner cavity of the first straight tube 132 is linear, the channel of the first straight tube 132 is linear, the path of the high-pressure gas flowing in the inner cavity of the second straight tube 133 is spatially spiral, the channel of the second straight tube 133 is spatially spiral, and the two shells 131 are far from each other. The two sides of the straight tubes 132 are respectively connected to the intake pipe 11 through flanges. A plurality of first straight tubes 132 are used to cool down the high-pressure gas at a lower temperature, and a plurality of second straight tubes 133 are used to cool down the high-pressure gas at a higher temperature. When the temperature of the high-pressure gas is relatively low, the first regulating member 134 controls the opening of the inner cavity of the first straight tube 132, and the second regulating member 135 controls the closing of the inner cavity of the second straight tube 133. When the temperature of the high-pressure gas is relatively high, the first regulating member 134 controls the closing of the inner cavity of the first straight tube 132, and the second regulating member 135 controls the opening of the inner cavity of the second straight tube 133. In order to improve the heat dissipation efficiency of the first straight tube 132, in this embodiment, a first annular fin 1321 is coaxially welded on the outer peripheral wall of the first straight tube 132. In order to improve the heat dissipation efficiency of the second straight tube 133, in this embodiment, a second annular fin 1331 is coaxially welded on the outer peripheral wall of the second straight tube 133.

[0055] Reference Figure 3 and Figure 4 The first adjusting member 134 includes a first tube body 1341, a first blocking plate 1342, a first bracket 1343 and a first telescopic rod. The first tube body 1341 is coaxially provided with a first air inlet cavity 1344 and a first air outlet cavity 1345. The diameter of the first air inlet cavity 1344 is larger than that of the first air outlet cavity 1345. The first bracket 1343 is welded to the peripheral wall of the first air outlet cavity 1345. The first bracket 1343 is provided with a plurality of first through holes for high-pressure gas to pass through. One end of the first telescopic rod is connected to the first A bracket 1343 is welded, and the other end is welded to the first blocking plate 1342. The first blocking plate 1342 is coaxially arranged in the first air inlet cavity 1344. A gap is left between the outer wall of the first blocking plate 1342 and the inner wall of the first air inlet cavity 1344. The first telescopic rod is used to push the first blocking plate 1342 away from the first air outlet cavity 1345. The first blocking plate 1342 is used to block the first air outlet cavity 1345. In this embodiment, the diameter of the first blocking plate 1342 is larger than the first air outlet cavity 1345.

[0056] Reference Figure 3 and Figure 5 The second adjusting member 135 includes a second tube body 1351, a second blocking plate 1352, a second bracket 1353 and a second telescopic rod. The second tube body 1351 is coaxially provided with a second air inlet cavity 1354 and a second air outlet cavity 1355. The diameter of the second air inlet cavity 1354 is smaller than that of the second air outlet cavity 1355. The second bracket 1353 is welded to the peripheral wall of the second air outlet cavity 1355. The second bracket 1353 is provided with a plurality of second through holes for high-pressure gas to pass through. One end of the second telescopic rod is welded to the second bracket 1353, and the other end is welded to the second blocking plate 1352. The second blocking plate 1352 is coaxially arranged in the second air outlet cavity 1355, and a gap is left between the outer peripheral wall of the second blocking plate 1352 and the inner peripheral wall of the second air outlet cavity 1355. The second telescopic rod is used to push the second blocking plate 1352 to be arranged close to the second air inlet cavity 1354, and the second blocking plate 1352 is used to block the second air inlet cavity 1354.

[0057] Reference Figure 4 and Figure 5, the first telescopic rod and the second telescopic rod both include a fixed section 1346, a sliding section 1347 and a compression spring 1348, the sliding section 1347 is slidably connected to the fixed section 1346, the fixed section 1346 is coaxially sleeved on the sliding section 1347, the fixed section 1346 is welded to the first bracket 1343 or the second bracket 1353 at one end away from the sliding section 1347, and the sliding section 1347 is welded to the first blocking plate 1342 or the second blocking plate 1352 at one end away from the fixed section 1346; in order to prevent the sliding section 1347 from detaching from the fixed section 1346, in this embodiment, the sliding section 1347 is coaxially and integrally connected with a flared boss at one end close to the fixed section 1346, and the fixed section 1346 is coaxially and integrally connected with a flange for abutting against the flared boss The compression spring 1348 is used to push the first blocking plate 1342 or the second blocking plate 1352 to move in the direction opposite to the flow direction of the high-pressure gas. In this embodiment, the compression spring 1348 is located in the inner cavity of the fixed section 1346, and one end of the compression spring 1348 abuts against the flared boss, and the other end abuts against the end surface of the fixed section 1346 away from the sliding section 1347. In the present application, the compression spring 1348 can also be coaxially sleeved on the fixed section 1346, and one end of the compression spring 1348 abuts against the first bracket 1343 or the second bracket 1353, and the other end abuts against the first blocking plate 1342 or the second blocking plate 1352, as long as the first blocking plate 1342 or the second blocking plate 1352 is pushed away from the fixed section 1346.

[0058] Reference Figure 4 and Figure 5 In order to realize the detachable connection between the first adjusting member 134 and the second adjusting member 135 , in this embodiment, the first tube body 1341 is threadedly connected to one end of the first straight tube 132 , and the second tube body 1351 is threadedly connected to one end of the second straight tube 133 .

[0059] Reference Figure 1 The exhaust module 2 includes an exhaust manifold 21, an exhaust pipe 22, a three-way catalytic converter 23 and a muffler 24. The intake end of the exhaust manifold 21 is connected to the outlet valve of the V-type engine through a pipe joint, the intake end of the exhaust pipe 22 is connected to the outlet end of the exhaust manifold 21 through a pipe joint, the impeller chamber of the turbocharger 12 is communicated with the inner cavity of the exhaust pipe 22, and the three-way catalytic converter 23 and the muffler 24 are installed on the exhaust pipe 22 in sequence by flange connection; in order to facilitate monitoring whether the three-way catalytic converter 23 is damaged, two oxygen sensors 25 are installed on the exhaust pipe 22 in this embodiment, the three-way catalytic converter 23 is located between the two oxygen sensors 25, and each oxygen sensor 25 is electrically connected to the ECU of the vehicle.

[0060] The implementation principle of the intake and exhaust device of a V-type engine in an embodiment of the present application is as follows: when in use, the gas enters the intake pipe 11 after being filtered by the air filter 15, and then flows into the turbine chamber of the turbocharger 12 for supercharging. The high-temperature gas after supercharging enters the intercooler unit 13 to be cooled to the standard temperature, and then the gas enters the cylinder cavity of the engine through the intake manifold 14. After the cylinder piston does work, the exhaust gas enters the exhaust pipe 22 from the cylinder cavity of the engine through the exhaust manifold 21, and then drives the turbine to rotate through the impeller chamber of the turbocharger 12 and enters the three-way catalytic converter 23. After the three-way catalytic converter 23 converts the harmful gas into harmless gas, it enters the muffler 24 for muffler, and finally is discharged through the exhaust pipe 22.

[0061] In the process of high-pressure gas entering the intercooling unit 13, when the high-pressure gas with a lower temperature enters the first air inlet cavity 1344 through the inner cavity of the shell 131, since the temperature of the gas is proportional to the pressure, the pressure of the high-pressure gas with a lower temperature is less than the pressure of the high-pressure gas with a higher temperature. At this time, the first telescopic rod is in a natural state, and the first blocking plate 1342 releases the blockage of the first air outlet cavity 1345. However, the pressure of the high-pressure gas with a lower temperature cannot push the second blocking plate 1352 to move away from the second air inlet cavity 1354. Therefore, the second air inlet cavity 1354 is in a closed state, and then the second straight pipe 133 is in a closed state. The high-pressure gas with a lower temperature can flow into the first air outlet cavity 1345 through the first air inlet cavity 1344 and pass through the first through hole. Finally, it flows into the inner cavity of the first straight tube 132 for air cooling; when the high-pressure gas with a higher temperature enters the first air inlet cavity 1344, due to the greater pressure of the high-pressure gas, the first blocking plate 1342 is pushed to move closer to the first air outlet cavity 1345 until the first blocking plate 1342 blocks the first air outlet cavity 1345. At this time, the length of the telescopic rod is shortened to achieve the closure of the inner cavity of the first straight tube 132. However, the high-pressure gas with a higher temperature can push the second blocking plate 1352 to move away from the second air inlet cavity 1354 until the second blocking plate 1352 releases the blockage of the second air inlet cavity 1354. The high-pressure gas can flow through the second air inlet cavity 1354 into the inner cavity of the second straight tube 133 for air cooling, so that the temperature of the high-pressure gas with a higher temperature is reduced to the standard temperature.

[0062] The intercooler unit 13 can cool high-pressure gases of different temperatures to a standard temperature, thereby preventing the high-pressure gas temperature from being too high after cooling and affecting the intake quality of the engine. It also prevents the low temperature of the high-pressure gas after cooling from thinning the engine oil, resulting in a decrease in the lubrication ability of the engine and causing wear on the engine piston rod, thereby increasing the service life of the engine.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intake and exhaust device for a V-type engine, characterized in that: It comprises an air intake module (1) and an exhaust module (2); The air intake module (1) comprises an air intake pipe (11), a turbocharger (12), an intercooler unit (13) and an air intake manifold (14); The turbocharger (12) and the intercooler unit (13) are both mounted on the intake pipe (11), the outlet end of the intake pipe (11) is connected to the intake end of the intake manifold (14), and the outlet end of the intake manifold (14) is connected to the intake valve of the V-type engine; The intercooling unit (13) is used to reduce the temperature of high-pressure gas of different temperatures flowing through the turbocharger (12) to a standard temperature; The exhaust module (2) is connected to the exhaust valve of the V-type engine and is used to discharge the exhaust gas to the outside; The intercooling unit (13) comprises two opposite shells (131), a plurality of first straight tubes (132), a first adjusting member (134) arranged on each of the first straight tubes (132), a plurality of second straight tubes (133), and a second adjusting member (135) arranged on each of the second straight tubes (133); A plurality of first straight tubes (132) and a plurality of second straight tubes (133) are arranged in parallel, the inner cavities of the two shells (131) are connected through the plurality of first straight tubes (132) or the plurality of second straight tubes (133), and the sides of the two shells (131) that are away from each other are respectively connected to the air inlet pipe (11); The first straight tubes (132) are used to cool down the high-pressure gas at a relatively low temperature; The plurality of second straight tubes (133) are used to cool high-pressure gas at a relatively high temperature; When the temperature of the high-pressure gas is low, the first regulating member (134) controls the inner cavity of the first straight tube (132) to be opened, and the second regulating member (135) controls the inner cavity of the second straight tube (133) to be closed; When the temperature of the high-pressure gas is high, the first regulating member (134) controls the inner cavity of the first straight tube (132) to be closed, and the second regulating member (135) controls the inner cavity of the second straight tube (133) to be opened; The first adjusting member (134) comprises a first tube body (1341), a first blocking plate (1342), a first bracket (1343) and a first telescopic rod; The first tube body (1341) is coaxially provided with a first air inlet cavity (1344) and a first air outlet cavity (1345); the diameter of the first air inlet cavity (1344) is larger than that of the first air outlet cavity (1345); the first bracket (1343) is arranged in the first air outlet cavity (1345); a plurality of first through holes for high-pressure gas to pass through are opened on the first bracket (1343); one end of the first telescopic rod is connected to the first bracket (1343), and the other end is connected to the first blocking plate (1342); the first blocking plate (1342) is coaxially provided in the first air inlet cavity (1344); a gap is left between the outer peripheral wall of the first blocking plate (1342) and the inner peripheral wall of the first air inlet cavity (1344); The first telescopic rod is used to push the first blocking plate (1342) away from the first air outlet cavity (1345), and the first blocking plate (1342) is used to block the first air outlet cavity (1345); The second adjusting member (135) comprises a second tube body (1351), a second blocking plate (1352), a second bracket (1353) and a second telescopic rod; The second tube body (1351) is coaxially provided with a second air inlet cavity (1354) and a second air outlet cavity (1355); the diameter of the second air inlet cavity (1354) is smaller than that of the second air outlet cavity (1355); the second bracket (1353) is arranged in the second air outlet cavity (1355); the second bracket (1353) is provided with a plurality of second through holes for high-pressure gas to pass through; one end of the second telescopic rod is connected to the second bracket (1353), and the other end is connected to the second blocking plate (1352); the second blocking plate (1352) is coaxially provided in the second air outlet cavity (1355); a gap is left between the outer peripheral wall of the second blocking plate (1352) and the inner peripheral wall of the second air outlet cavity (1355); The second telescopic rod is used to push the second blocking plate (1352) to be disposed close to the second air inlet cavity (1354), and the second blocking plate (1352) is used to block the second air inlet cavity (1354); The first telescopic rod and the second telescopic rod both include a fixed section (1346), a sliding section (1347) and a compression spring (1348); the sliding section (1347) is slidably connected to the fixed section (1346); one end of the fixed section (1346) away from the sliding section (1347) is connected to the first bracket (1343) or the second bracket (1353); one end of the sliding section (1347) away from the fixed section (1346) is connected to the first blocking plate (1342) or the second blocking plate (1352); and the compression spring (1348) is used to push the first blocking plate (1342) or the second blocking plate (1352) to move in a direction opposite to the flow direction of the high-pressure gas.

2. The intake and exhaust device of a V-type engine according to claim 1, characterized in that: The path of the high-pressure gas flowing in the inner cavity of the first straight tube (132) is linear, and the path of the high-pressure gas flowing in the inner cavity of the second straight tube (133) is spatially spiral.

3. The intake and exhaust device of a V-type engine according to claim 1, characterized in that: The outer peripheral wall of the first straight tube (132) is provided with an annular first fin (1321).

4. The intake and exhaust device of a V-type engine according to claim 1, characterized in that: The outer peripheral wall of the second straight tube (133) is provided with an annular second fin (1331).

5. The intake and exhaust device of a V-type engine according to claim 1, characterized in that: The exhaust module (2) comprises an exhaust manifold (21), an exhaust pipe (22), a three-way catalytic converter (23) and a muffler (24); The air inlet end of the exhaust manifold (21) is connected to the air outlet valve of the V-type engine, the air inlet end of the exhaust pipe (22) is connected to the air outlet end of the exhaust manifold (21), the impeller chamber of the turbocharger (12) is in communication with the inner cavity of the exhaust pipe (22), and the three-way catalytic converter (23) and the muffler (24) are sequentially mounted on the exhaust pipe (22).

6. The intake and exhaust device of a V-type engine according to claim 5, characterized in that: The exhaust pipe (22) is provided with two oxygen sensors (25), and the three-way catalytic converter (23) is located between the two oxygen sensors (25).

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