Emission reduction device for increasing exhaust temperature of engine

Abstract

The invention provides an emission reduction device for increasing exhaust temperature of an engine, and relates to the technical field of internal combustion engines. The emission reduction device for increasing the exhaust temperature of the engine comprises an intercooler three-way valve, a gas compressor, the engine, a turbine, an exhaust gas recirculation three-way valve and a control unit. A first inlet of the intercooler three-way valve is connected with a gas compressor through a gas inlet main pipe, and a first outlet of the intercooler three-way valve is connected with an engine through an intercooler front gas inlet pipe. The engine is connected with the turbine through an exhaust manifold; a second inlet of the exhaust gas recirculation three-way valve is connected with an exhaust manifold, and a second outlet of the exhaust gas recirculation three-way valve is connected with an intercooling front gas inlet pipe through an intercooling front exhaust gas bypass pipe; an air temperature sensor is arranged on the air inlet main pipe; the control unit is connected with the intercooler three-way valve and the exhaust gas recirculation three-way valve. By controlling the flowing paths of the air and the waste gas, the temperature of the air entering the combustion chamber is increased during cold start of the engine, complete combustion of fuel is promoted, and the problem that emission exceeds the standard is solved.

Description

Technical Field

[0001] The present application relates to the technical field of internal combustion engines, and in particular to an emission reduction device for increasing the exhaust temperature of an engine. Background Art

[0002] Increase in engine exhaust temperature refers to the rise in engine exhaust temperature. Increasing exhaust temperature can increase the thermal efficiency of the engine. Increasing exhaust temperature can also optimize the combustion process of engine fuel, thereby reducing emissions and improving fuel combustion efficiency.

[0003] In the prior art, the engine exhaust temperature is usually increased by supercharging. During the intake process of the engine, the air is first compressed and then enters the intercooler, which cools the air to increase its density. The cooled high-density air enters the combustion chamber of the engine and is fully mixed with the fuel to achieve an efficient combustion process. Supercharging helps to increase the combustion temperature, thereby improving the combustion efficiency of the fuel and the overall performance of the engine.

[0004] However, the prior art has the problem of excessive emissions during cold start. Cold start refers to starting the engine after a long period of shutdown, especially when the ambient temperature is low. In this case, the air temperature is low, and the air is cooled by the intercooler before entering the engine, resulting in an even lower temperature of the air entering the engine. Under low temperature conditions, the fuel and air are mixed unevenly, which may cause incomplete combustion of the fuel in the engine combustion chamber. This incomplete combustion will lead to an increase in unburned hydrocarbons and carbon monoxide in the emissions, resulting in excessive emissions. Summary of the invention

[0005] The present application provides an emission reduction device for increasing the exhaust temperature of an engine, so as to solve the problem of excessive emissions in the prior art.

[0006] In a first aspect, the present application provides an emission reduction device for increasing the exhaust temperature of an engine, the device comprising: an intercooler three-way valve, a compressor, an engine, a turbine, an exhaust gas recirculation three-way valve and a control unit;

[0007] The first inlet of the intercooler three-way valve is connected to the compressor through an intake manifold, and the first outlet of the intercooler three-way valve is connected to the engine through an intake pipe before intercooling, and the intake manifold is used to transmit the air output by the compressor to the intercooler three-way valve;

[0008] The engine is connected to the turbine via an exhaust manifold, and the exhaust manifold is used to transmit the exhaust gas output by the engine to the turbine;

[0009] The second inlet of the exhaust gas recirculation three-way valve is connected to the exhaust manifold, and the second outlet of the exhaust gas recirculation three-way valve is connected to the intercooler front intake pipe through the intercooler front exhaust gas bypass pipe;

[0010] The air intake manifold is provided with an air temperature sensor for detecting air temperature;

[0011] The control unit is connected to the intercooler three-way valve and the exhaust gas recirculation three-way valve respectively through wires, and the control unit is used to control the opening and closing of the first outlet and the second outlet;

[0012] When the air temperature is lower than a preset first temperature value, the control unit is used to control the opening of the first outlet and the second outlet. When the first outlet is opened, the intercooler front intake pipe is used to transmit the air to the engine. When the second outlet is opened, the intercooler front exhaust gas bypass pipe is used to transmit a preset volume of exhaust gas in the exhaust manifold to the intercooler front intake pipe.

[0013] In one possible design, the emission reduction device for increasing the engine exhaust temperature further includes: a first intercooler and a second intercooler;

[0014] The first intercooler is arranged on the intercooler rear intake pipe, the third outlet of the intercooler three-way valve is connected to the engine through the intercooler rear intake pipe, the first intercooler is used to cool the air, the intercooler rear intake pipe is used to transmit the air to the first intercooler, and send the cooled air to the engine;

[0015] The second intercooler is arranged on the exhaust gas bypass pipe after the intercooler, and the fourth outlet of the exhaust gas recirculation three-way valve is connected to the intake pipe before the intercooler through the exhaust gas bypass pipe after the intercooler. The second intercooler is used to cool the preset volume of exhaust gas, and the exhaust gas bypass pipe after the intercooler is used to transmit the preset volume of exhaust gas to the second intercooler, and transmit the preset volume of exhaust gas after cooling to the intake pipe before the intercooler.

[0016] In a possible design, a rotation speed sensor is provided on the engine, and the rotation speed sensor is used to detect the rotation speed of the engine;

[0017] The control unit is used to control the third outlet to open so that the air enters the engine through the intercooler rear intake pipe;

[0018] When the speed is lower than a preset speed value, the control unit is also used to control the opening of the fourth outlet so that the preset volume of exhaust gas enters the intercooler front intake pipe through the intercooler rear exhaust gas bypass pipe, and the intercooler front intake pipe is also used to transmit the cooled preset volume of exhaust gas to the engine.

[0019] In one possible design, the emission reduction device for increasing the engine exhaust temperature further includes: an exhaust temperature sensor;

[0020] The exhaust temperature sensor is arranged on the exhaust manifold, and is used to detect the exhaust temperature, and the exhaust temperature is used to indicate the combustion efficiency of the fuel in the engine;

[0021] When the exhaust temperature is higher than a preset second temperature value, the control unit is used to control the opening of the third outlet and the fourth outlet. When the third outlet is opened, the air enters the engine through the intercooler rear intake pipe. When the fourth outlet is opened, the preset volume of exhaust gas enters the intercooler front intake pipe through the intercooler rear exhaust gas bypass pipe.

[0022] In one possible design, the emission reduction device for increasing the engine exhaust temperature further includes: a particulate trap;

[0023] The particle collector is arranged on the exhaust manifold, and is used for collecting particulate matter in the exhaust gas.

[0024] In a possible design, the particle trap is provided with a concentration sensor, and the concentration sensor is used to detect the concentration of particulate matter in the exhaust gas;

[0025] When the concentration of the particulate matter is higher than a preset concentration value, the control unit is used to control the third outlet to open, so that the air enters the engine through the intercooler rear intake pipe.

[0026] In one possible design, the control unit is provided with a wireless communicator, and the control unit is also used to receive the air temperature sent by the air temperature sensor, the exhaust temperature sent by the exhaust temperature sensor, and the particulate matter concentration sent by the concentration sensor, and send the intake temperature, the exhaust temperature and the particulate matter concentration to an external device, and the external device is used to receive and monitor the intake temperature, the exhaust temperature and the particulate matter concentration.

[0027] In a possible design, both the first intercooler and the second intercooler are water-cooled intercoolers.

[0028] In one possible design, the emission reduction device for increasing the engine exhaust temperature further includes: a transmission shaft;

[0029] The compressor is connected to the turbine via the transmission shaft, the exhaust gas is used to drive the turbine to rotate, the turbine is used to drive the transmission shaft to rotate, and the transmission shaft is used to drive the compressor to compress the air.

[0030] In a possible design, a throttle valve is provided on the intake manifold, and the throttle valve is used to control the flow rate of the air.

[0031] The present application provides an emission reduction device for increasing the exhaust temperature of an engine, the device comprising: an intercooler three-way valve, a compressor, an engine, a turbine, an exhaust gas recirculation three-way valve and a control unit; a first inlet of the intercooler three-way valve is connected to the compressor through an intake manifold, a first outlet of the intercooler three-way valve is connected to the engine through an intake pipe before the intercooler, the intake manifold is used to transmit the air output by the compressor to the intercooler three-way valve; the engine is connected to the turbine through an exhaust manifold, the exhaust manifold is used to transmit the exhaust gas output by the engine to the turbine; a second inlet of the exhaust gas recirculation three-way valve is connected to the exhaust manifold, and a second outlet of the exhaust gas recirculation three-way valve is connected to the exhaust manifold. The exhaust gas bypass pipe before the intercooler is connected to the intake pipe before the intercooler; an air temperature sensor for detecting the air temperature is provided on the intake manifold; the control unit is connected to the three-way valve of the intercooler and the three-way valve of the exhaust gas recirculation through wires, and the control unit is used to control the opening and closing of the first outlet and the second outlet; when the air temperature is lower than the preset first temperature value, the control unit is used to control the opening of the first outlet and the second outlet, when the first outlet is opened, the intake pipe before the intercooler is used to transmit the air to the engine, and when the second outlet is opened, the exhaust gas bypass pipe before the intercooler is used to transmit the preset volume of exhaust gas in the exhaust manifold to the intake pipe before the intercooler. The emission reduction device for increasing the exhaust temperature of the engine of the embodiment of the present application utilizes the cooperation of the three-way valve of the intercooler and the three-way valve of the exhaust gas recirculation. When the air temperature is lower than the preset value, the control unit simultaneously opens the first outlet of the three-way valve of the intercooler and the second outlet of the three-way valve of the exhaust gas recirculation. This operation allows air that has not been cooled by the intercooler and a certain volume of exhaust gas to directly enter the intake pipe of the engine. By introducing exhaust gas recirculation, the high temperature characteristics of the exhaust gas increase the temperature of the air entering the engine, thereby improving the mixing efficiency of fuel and air and promoting the full combustion of the fuel, improving combustion efficiency and engine performance, and achieving the effect of reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of the structure of the emission reduction device for increasing the engine exhaust temperature provided in the embodiment of the present application Figure 1 ;

[0034] Figure 2A schematic diagram of the structure of the emission reduction device for increasing the engine exhaust temperature provided in the embodiment of the present application Figure 2 .

[0035] Description of reference numerals:

[0036] 100-Intercooler three-way valve;

[0037] 200-compressor;

[0038] 300 - engine;

[0039] 400 - Turbine;

[0040] 500- Exhaust gas recirculation three-way valve;

[0041] 600-control unit;

[0042] 6001-Wireless communicator;

[0043] 700-intake manifold;

[0044] 7001-air temperature sensor;

[0045] 7002-throttle valve;

[0046] 800-intercooler front intake pipe;

[0047] 900-Exhaust header;

[0048] 1000-exhaust gas bypass pipe before intercooler;

[0049] 1100-1st intercooler;

[0050] 1200 - Second intercooler;

[0051] 1300-Intercooler rear intake pipe;

[0052] 1400-intercooler exhaust gas bypass pipe;

[0053] 1500-speed sensor;

[0054] 1600-Exhaust temperature sensor;

[0055] 1700-particle collector;

[0056] 1701-concentration sensor;

[0057] 1800-Drive shaft. DETAILED DESCRIPTION

[0058] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and apparatuses consistent with some aspects of the present application as detailed in the appended claims.

[0059] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. For example, the first chip and the second chip are only used to distinguish different chips, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0060] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the emission reduction device for increasing the engine exhaust temperature provided in the embodiment of the present application is only an example, and the emission reduction device for increasing the engine exhaust temperature can also include more or less content.

[0061] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0062] Engine exhaust temperature: refers to the temperature of exhaust gas discharged from the engine exhaust system, and is one of the important parameters for evaluating the engine's operating status and performance. Exhaust temperature can reflect the efficiency of the combustion process, the combustion status of the fuel, and the health of the exhaust system. Too high exhaust temperature may indicate incomplete combustion, excessive load or cooling system failure, while too low exhaust temperature may mean low combustion efficiency.

[0063] Emission reduction devices: are devices used to reduce harmful emissions from engines or industrial processes, with the aim of reducing pollution to the environment and harm to human health. These devices treat emissions through chemical or physical methods to reduce the emission of pollutants such as nitrogen oxides, hydrocarbons, carbon monoxide and particulate matter.

[0064] Three-way valve: a fluid control device with three connection ports for changing the fluid flow path or distributing the fluid. It can achieve different flow patterns by adjusting the position of the valve core, such as directing the fluid from one inlet to one of the two outlets, or switching the fluid flow direction between the two inlets. Three-way valves are widely used in heating, ventilation, air conditioning systems and industrial processes to improve the flexibility and efficiency of the system.

[0065] Compressor: A mechanical device used to increase the pressure and kinetic energy of a gas by reducing its volume or increasing its velocity. It compresses gas from a low-pressure area to a high-pressure area through the movement of rotating blades or pistons.

[0066] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0067] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0068] In order to clearly understand the technical solution of the present application, the solution of the prior art is first introduced in detail. Increase in engine exhaust temperature refers to the phenomenon that the temperature of the exhaust gas discharged by the engine rises, which usually reflects the change in the operating state or working conditions of the engine. Increase in engine exhaust temperature in the prior art is usually used to improve the performance and emission efficiency of the engine in a low temperature environment. By adjusting the airflow in the exhaust system, the exhaust temperature is increased to accelerate the heating of the catalytic converter, thereby improving its efficiency. Specific methods may include the use of variable exhaust valves, thermal management materials or electric heating elements to ensure that the engine quickly reaches the operating temperature during startup and low-load operation.

[0069] However, the prior art engine exhaust temperature increase has the problem of excessive emissions during cold start. After the engine has been shut down for a long time, especially when it is started under low ambient temperature, the air temperature entering the engine is low. This is because the air temperature has been further reduced by the intercooler before entering the engine. Under such low temperature conditions, the mixture of fuel and air becomes uneven, resulting in incomplete combustion of the fuel in the combustion chamber. This incomplete combustion increases the content of unburned hydrocarbons and carbon monoxide in the emissions, thereby causing excessive emissions.

[0070] Therefore, in view of the problem of excessive emissions during cold start caused by the increase of engine exhaust temperature in the existing technology, it was found in the research that in order to solve this problem, the fuel-air mixing efficiency and combustion completeness can be improved by optimizing the engine intake method or using technologies such as catalytic converters: ① The timing and injection amount of fuel injection can be adjusted to improve the mixing uniformity of fuel and air, thereby improving combustion efficiency. ② The engine intake method can be improved so that air can enter the engine without passing through the intercooler, and part of the exhaust gas can be re-input into the engine. ③ The electric auxiliary heating system can be used to heat the engine components during cold start, thereby reducing incomplete combustion of fuel at low temperatures.

[0071] Specific:

[0072] A system for solving the problem of excessive emissions during cold start of an engine can be constructed, which includes a series of components and control mechanisms, including valves for regulating the flow of intake and exhaust gases, sensors for detecting air temperature, and a control unit for managing these components. The system optimizes the mixing of intake and exhaust gases by controlling the opening and closing of valves when the air temperature is below a preset value, thereby increasing the air temperature entering the engine and reducing excessive emissions during cold start.

[0073] The emission reduction device for increasing the engine exhaust temperature of the embodiment of the present application realizes intelligent management of the flow of intake and exhaust gas by configuring the intercooler three-way valve, the exhaust gas recirculation three-way valve, the air temperature sensor and the control unit. When the air temperature is detected to be lower than the preset value, the control unit opens the corresponding valve to allow part of the exhaust gas to mix with the intake air before entering the intercooler, thereby increasing the air temperature entering the engine. This process improves the mixing efficiency of fuel and air, promotes the complete combustion of fuel, significantly reduces the emission of unburned hydrocarbons and carbon monoxide during cold start, and solves the problem of excessive emissions during cold start.

[0074] Based on the above creative findings, the technical solution of the present application is proposed.

[0075] Figure 1 A schematic diagram of the structure of the emission reduction device for increasing the engine exhaust temperature provided in the embodiment of the present application Figure 1 .like Figure 1 As shown, in this embodiment, the emission reduction device for increasing the engine exhaust temperature includes: an intercooler three-way valve 100, a compressor 200, an engine 300, a turbine 400, an exhaust gas recirculation three-way valve 500 and a control unit 600.

[0076] Specifically, the intercooler three-way valve 100 is a valve for controlling the air flow path, which can selectively transmit the air output by the compressor 200 to the engine 300 or other paths. The compressor 200 is a device for compressing air, which can increase the air density. The turbine 400 is a device that uses exhaust gas energy to drive the compressor 200, which can improve the overall efficiency of the engine. The exhaust gas recirculation three-way valve 500 is a valve for controlling the exhaust gas recirculation path, which can reintroduce a portion of the exhaust gas into the engine's intake system according to the instructions of the control unit to improve combustion efficiency. The control unit 600 is an electronic device that can control the opening and closing of the intercooler three-way valve 100 and the exhaust gas recirculation three-way valve 500 according to the sensor input, thereby optimizing the performance of the engine.

[0077] The first inlet of the intercooler three-way valve 100 is connected to the compressor 200 through the intake manifold 700, and the first outlet of the intercooler three-way valve 100 is connected to the engine 300 through the intercooler front intake pipe 800. The intake manifold 700 is used to transmit the air output by the compressor 200 to the intercooler three-way valve 100.

[0078] Specifically, this connection method can guide the air output by the compressor 200 into the intercooler three-way valve 100, and then transmit it to the engine 300 through the intercooler front intake pipe 800. By controlling the air flow path, under certain conditions, such as when the air temperature is lower than a preset value, the compressed air can be directly sent to the engine 300 to increase the intake temperature, thereby optimizing the combustion efficiency and emission performance of the engine 300. This design helps to increase the exhaust temperature of the engine 300 in a low temperature environment and reduce pollutant emissions.

[0079] The engine 300 is connected to the turbine 400 via an exhaust manifold 900 , and the exhaust manifold 900 is used to transmit the exhaust gas output by the engine 300 to the turbine 400 .

[0080] Specifically, the exhaust port of the engine 300 can be connected to the inlet of the turbine 400 through the exhaust manifold 900. The exhaust manifold 900 is used to guide the exhaust gas generated after the combustion of the engine 300 to the turbine 400, so that the exhaust gas flow drives the turbine blades to rotate, thereby driving the compressor 200 coaxially connected to the turbine to operate. This process uses the energy of the exhaust gas to drive the turbocharger system, increases the intake pressure and density of the engine, and then improves the power output and combustion efficiency of the engine.

[0081] The second inlet of the exhaust gas recirculation three-way valve 500 is connected to the exhaust manifold 900 , and the second outlet of the exhaust gas recirculation three-way valve 500 is connected to the intercooler front intake pipe 800 through the intercooler front exhaust gas bypass pipe 1000 .

[0082] Specifically, a portion of the exhaust manifold 900 can be connected to the second inlet of the exhaust gas recirculation three-way valve 500 through a pipeline, and the second outlet of the exhaust gas recirculation three-way valve 500 is connected to the pre-intercooler intake pipe 800 through the pre-intercooler exhaust gas bypass pipe 1000. This design can reintroduce part of the exhaust gas into the intake system of the engine 300 to reduce nitrogen oxide emissions. Through the regulation of the control unit 600, the amount of recirculated exhaust gas can be adjusted as needed to optimize the emission performance and combustion efficiency of the engine.

[0083] The intake manifold 700 is provided with an air temperature sensor 7001 for detecting the air temperature.

[0084] Specifically, the air temperature sensor 7001 can monitor the temperature of the air entering the intake manifold 700 in real time and transmit the temperature data to the control unit 600. Its function is to provide key temperature information to the control unit 600 so that it can adjust the opening and closing states of the intercooler three-way valve 100 and the exhaust gas recirculation three-way valve 500 according to the change of air temperature. This real-time monitoring and adjustment mechanism helps to optimize the intake temperature and combustion efficiency of the engine.

[0085] The control unit 600 is connected to the intercooler three-way valve 100 and the exhaust gas recirculation three-way valve 500 through wires, and the control unit 600 is used to control the opening and closing of the first outlet and the second outlet.

[0086] Specifically, the control unit 600 is connected to the actuator of each valve through a wire, and can send a control signal to adjust the opening and closing state of the valve. The control unit 600 can intelligently adjust the opening and closing of the intercooler three-way valve 100 and the exhaust gas recirculation three-way valve 500 according to the data from the air temperature sensor 7001 and other sensors, thereby optimizing the flow path of air and exhaust gas. This control mechanism helps to maintain the engine's intake temperature and exhaust gas recirculation ratio under different operating conditions, and improve the combustion efficiency of the fuel in the engine.

[0087] When the air temperature is lower than a preset first temperature value, the control unit 600 is used to control the opening of the first outlet and the second outlet. When the first outlet is opened, the intercooler front intake pipe 800 is used to transmit air to the engine 300. When the second outlet is opened, the intercooler front exhaust gas bypass pipe 1000 is used to transmit a preset volume of exhaust gas in the exhaust manifold 900 to the intercooler front intake pipe 800.

[0088] The present embodiment provides an emission reduction device for increasing the exhaust temperature of an engine, and its main structure includes an intercooler three-way valve, a compressor, an engine, a turbine, an exhaust gas recirculation three-way valve and a control unit. The air output by the compressor is guided to the engine through the intake manifold and the intake pipe before the intercooler, and the exhaust manifold transmits the exhaust gas of the engine to the turbine. The exhaust gas recirculation three-way valve connects the exhaust manifold and the intake pipe before the intercooler through the exhaust gas bypass pipe before the intercooler to achieve exhaust gas recirculation. The air temperature sensor is installed on the intake manifold to monitor the air temperature in real time and transmit the information to the control unit. The control unit adjusts the opening and closing of the valve to optimize the intake temperature and emission performance of the engine. The emission reduction device for increasing the exhaust temperature of the engine achieves the following technical effects: by intelligently controlling the intake and exhaust gas recirculation paths, the engine intake temperature is optimized, thereby improving combustion efficiency and reducing emissions. The device adjusts the opening and closing states of the intercooler three-way valve and the exhaust gas recirculation three-way valve through the control unit. When the air temperature is lower than the preset value, an appropriate amount of exhaust gas is introduced into the intake path to increase the gas temperature and improve combustion conditions. This dynamic adjustment mechanism not only improves the engine's operating efficiency under different environmental conditions, but also effectively reduces the generation of harmful emissions such as nitrogen oxides, solving the problem of excessive emissions.

[0089] Figure 2 A schematic diagram of the structure of the emission reduction device for increasing the engine exhaust temperature provided in the embodiment of the present application Figure 2 .like Figure 2 As shown, in this embodiment Figure 1 Based on the embodiments, the emission reduction device for increasing the engine exhaust temperature is described in detail.

[0090] The emission reduction device for increasing the engine exhaust temperature further includes: a first intercooler 1100 and a second intercooler 1200 .

[0091] Specifically, the first intercooler 1100 and the second intercooler 1200 can reduce the temperature of the air and exhaust gas entering the engine. By reducing the air temperature, the intercooler increases the air density, thereby improving the engine performance. Under different operating conditions, the use of the intercooler can optimize the engine's intake temperature, ensure that the boost effect is provided at high loads and high speeds, and avoid overcooling at low temperature starts and low loads. In addition, the intercooler is also used to reduce the exhaust gas temperature during the exhaust gas recirculation process to reduce the heat load on the engine, protect engine components and optimize emission control.

[0092] The first intercooler 1100 is arranged on the intercooler rear intake pipe 1300, and the third outlet of the intercooler three-way valve 100 is connected to the engine 300 through the intercooler rear intake pipe 1300. The first intercooler 1100 is used to cool the air, and the intercooler rear intake pipe 1300 is used to transmit the air to the first intercooler 1100 and send the cooled air to the engine 300.

[0093] Specifically, the first intercooler 1100 is arranged on the intercooler rear intake pipe 1300, and its function is to cool down the air entering the intercooler rear intake pipe 1300 through the third outlet of the intercooler three-way valve 100. When the third outlet of the intercooler three-way valve 100 is opened, the air output by the compressor 200 enters the first intercooler 1100 through the intercooler rear intake pipe 1300. During this process, the temperature of the air is reduced, and then the reduced temperature air is transmitted to the engine 300. This design can reduce the temperature of the air entering the engine under certain working conditions, and prevent the engine 300 from being damaged by excessive temperature.

[0094] The second intercooler 1200 is arranged on the exhaust gas bypass pipe 1400 after the intercooler, and the fourth outlet of the exhaust gas recirculation three-way valve 500 is connected to the intake pipe 800 before the intercooler through the exhaust gas bypass pipe 1400 after the intercooler. The second intercooler 1200 is used to cool down the preset volume of exhaust gas, and the exhaust gas bypass pipe 1400 after the intercooler is used to transfer the preset volume of exhaust gas to the second intercooler 1200, and transfer the preset volume of exhaust gas after cooling to the intake pipe 800 before the intercooler.

[0095] Specifically, the fourth outlet of the exhaust gas recirculation three-way valve 500 is connected to the pre-intercooler intake pipe 800 through the post-intercooler exhaust gas bypass pipe 1400, and the exhaust gas is cooled when passing through the second intercooler 1200, and then transmitted to the pre-intercooler intake pipe 800. This can reduce the temperature of the exhaust gas, thereby preventing the excessive exhaust gas temperature from adversely affecting the performance and emissions of the engine when it is reintroduced into the engine's intake system.

[0096] The engine 300 is provided with a rotation speed sensor 1500 , and the rotation speed sensor 1500 is used to detect the rotation speed of the engine 300 .

[0097] Specifically, the speed sensor 1500 is a sensor device installed on the engine 300, and is used to detect the speed of the engine 300 in real time. By monitoring the speed of the engine 300, the speed sensor 1500 can provide key data to the control unit 600, so that when the speed of the engine 300 is lower than a preset value, corresponding control measures are triggered, for example, the fourth outlet of the exhaust gas recirculation three-way valve 500 is opened, so that a preset volume of exhaust gas passes through the exhaust gas bypass pipe 1400 after the intercooler and enters the intake pipe 800 before the intercooler, thereby optimizing the emission performance and operating efficiency of the engine.

[0098] The control unit 600 is used to control the third outlet to open, so that air can enter the engine 300 through the intercooler rear intake pipe 1300 .

[0099] Specifically, the control unit 600 realizes the opening and closing control of the third outlet by connecting with the intercooler three-way valve 100. When the cooled air needs to be delivered to the engine 300, the control unit 600 will send a signal to open the third outlet of the intercooler three-way valve 100, so that the air enters the engine 300 through the intercooler rear intake pipe 1300. This process helps to adjust the temperature of the air entering the engine 300, thereby optimizing the combustion efficiency and engine performance.

[0100] When the speed is lower than the preset speed value, the control unit 600 is also used to control the opening of the fourth outlet so that a preset volume of exhaust gas enters the intercooler front intake pipe 800 through the intercooler rear exhaust gas bypass pipe 1400. The intercooler front intake pipe 800 is also used to transmit the cooled preset volume of exhaust gas to the engine 300.

[0101] Specifically, when the speed of the engine 300 is lower than the preset speed value, the control unit 600 controls the fourth outlet of the exhaust gas recirculation three-way valve 500 to open. In this way, the preset volume of exhaust gas enters the pre-intercooling intake pipe 800 through the post-intercooling exhaust gas bypass pipe 1400, and is cooled by the second intercooler 1200 before being transmitted to the engine 300. This process is achieved by the speed sensor 1500 detecting the speed of the engine and transmitting the signal to the control unit 600. By introducing the cooled exhaust gas, the combustion efficiency of the fuel in the engine 300 can be effectively improved, and emissions can be reduced, especially under low speed conditions, which helps to improve the overall performance and environmental performance of the engine.

[0102] The emission reduction device for increasing the engine exhaust temperature also includes: an exhaust temperature sensor 1600.

[0103] Specifically, the exhaust temperature sensor 1600 is a sensor device installed on the exhaust manifold 900, and its main function is to detect the exhaust temperature of the engine 300. By monitoring the exhaust temperature, the exhaust temperature sensor 1600 can provide real-time data to the control unit 600, so that when the exhaust temperature is higher than the preset second temperature value, the control unit 600 can adjust the opening and closing states of the intercooler three-way valve 100 and the exhaust gas recirculation three-way valve 500, thereby optimizing the operating efficiency of the engine 300.

[0104] The exhaust temperature sensor 1600 is disposed on the exhaust manifold 900 . The exhaust temperature sensor 1600 is used to detect the exhaust temperature. The exhaust temperature is used to indicate the combustion efficiency of the fuel in the engine 300 .

[0105] Specifically, the exhaust temperature sensor 1600 is used to detect the temperature of the exhaust gas discharged by the engine 300 in real time. This temperature data can reflect the combustion efficiency of the fuel in the engine 300, because the combustion efficiency is usually directly related to the exhaust gas temperature. A higher exhaust temperature may indicate incomplete fuel combustion or excessive heat loss, while a lower temperature may indicate a higher combustion efficiency. By monitoring the exhaust temperature, the control unit 600 can adjust the intake and exhaust gas recirculation systems to optimize the combustion process.

[0106] When the exhaust temperature is higher than the preset second temperature value, the control unit 600 is used to control the opening of the third outlet and the fourth outlet. When the third outlet is opened, the air enters the engine 300 through the intercooler rear intake pipe 1300. When the fourth outlet is opened, the preset volume of exhaust gas enters the intercooler front intake pipe 800 through the intercooler rear exhaust gas bypass pipe 1400.

[0107] Specifically, when the exhaust temperature sensor 1600 detects that the exhaust temperature is higher than the preset second temperature value, the control unit 600 opens the third outlet of the intercooler three-way valve 100 and the fourth outlet of the exhaust gas recirculation three-way valve 500. The air cooled by the first intercooler 1100 enters the engine 300 through the intercooler rear intake pipe 1300, and the preset volume of exhaust gas cooled by the second intercooler 1200 enters the intercooler front intake pipe 800 through the intercooler rear exhaust gas bypass pipe 1400, and finally enters the engine 300. By introducing an appropriate amount of cooling air and exhaust gas, the temperature and combustion conditions of the combustion chamber are adjusted, thereby improving the combustion efficiency and reducing the heat loss caused by excessive temperature.

[0108] The emission reduction device for increasing the engine exhaust temperature also includes: a particulate trap 1700.

[0109] Specifically, the particle trap 1700 is a device installed on the exhaust manifold 900, and its main function is to collect and filter particulate matter in the exhaust gas. These particulate matter are usually tiny solid particles generated during the combustion process, which may include carbon particles and other pollutants. By capturing these particulate matter, it helps to reduce environmental pollution.

[0110] The particulate trap 1700 is disposed on the exhaust manifold 900 and is used to collect particulate matter in the exhaust gas.

[0111] Specifically, the particle collector 1700 is installed on the exhaust manifold 900. Its design generally includes filter materials or structures that can effectively capture and collect tiny particles suspended in the exhaust gas, such as carbon particles and other pollutants. This process is achieved through mechanisms such as physical interception, inertial collision or diffusion. The role of the particle collector is to reduce the emission of harmful particles, thereby reducing pollution to the environment and improving air quality.

[0112] The particle collector 1700 is provided with a concentration sensor 1701, and the concentration sensor 1701 is used to detect the concentration of particulate matter in the exhaust gas.

[0113] Specifically, the concentration sensor 1701 is a sensor device installed on the particle trap 1700, and its function is to detect the concentration of particulate matter in the exhaust gas. By monitoring the concentration of particulate matter, the concentration sensor 1701 can provide real-time data to the control unit 600, so that when the concentration of particulate matter is higher than the preset concentration value, the control unit 600 is triggered to take corresponding measures, for example, controlling the third outlet to open, so that air enters the engine 300 through the intercooler rear intake pipe 1300, thereby optimizing the operating state of the engine and reducing emissions.

[0114] When the concentration of particulate matter is higher than a preset concentration value, the control unit 600 is used to control the third outlet to open, so that air can enter the engine 300 through the intercooler rear intake pipe 1300 .

[0115] Specifically, when the particle concentration sensor 1701 detects that the particle concentration in the exhaust gas is higher than the preset concentration value, the control unit 600 will receive this signal and execute the preset control logic. For example, the control unit 600 will control the third outlet of the intercooler three-way valve 100 to open, so that the air cooled by the first intercooler 1100 enters the engine 300 through the intercooler rear intake pipe 1300. By increasing the inflow of fresh air and improving the combustion conditions, the generation and emission of particles in the exhaust gas are reduced, and the combustion efficiency and environmental performance of the engine are improved.

[0116] The control unit 600 is provided with a wireless communicator 6001. The control unit 600 is also used to receive the air temperature sent by the air temperature sensor 7001, the exhaust temperature sent by the exhaust temperature sensor 1600, and the particulate matter concentration sent by the concentration sensor 1701, and send the intake temperature, exhaust temperature and particulate matter concentration to an external device, which is used to receive and monitor the intake temperature, exhaust temperature and particulate matter concentration.

[0117] Specifically, the data received by the control unit 600 is sent to an external device, such as a computer or a monitoring system, via a wireless communicator 6001. The external device is used to receive and monitor these parameters in real time for remote monitoring and analysis, thereby optimizing engine performance, improving combustion efficiency, and reducing emissions. The implementation of such wireless data transmission and monitoring helps to promptly discover and resolve potential problems and ensure efficient operation of the engine.

[0118] The first intercooler 1100 and the second intercooler 1200 are both water-cooled intercoolers.

[0119] Specifically, the first intercooler 1100 and the second intercooler 1200 are water-cooled intercoolers, which effectively cool the air and exhaust gas through a water cooling system. The water-cooled intercooler uses coolant to flow inside the intercooler to take away the heat of the air or exhaust gas passing through the intercooler, thereby reducing its temperature. Compared with air cooling, this cooling method can effectively reduce the temperature of air and exhaust gas, thereby improving the combustion efficiency and overall performance of the engine, while reducing emissions.

[0120] The emission reduction device for increasing the engine exhaust temperature also includes: a transmission shaft 1800.

[0121] Specifically, the transmission shaft 1800 is a mechanical connection device for transmitting the rotational motion of the turbine 400 to the compressor 200. The exhaust gas drives the turbine 400 to rotate, and the turbine 400 transmits the rotational motion to the compressor 200 through the transmission shaft 1800, thereby driving the compressor 200 to compress air. This design utilizes the energy of the exhaust gas and improves the overall efficiency and performance of the system.

[0122] The compressor 200 is connected to the turbine 400 via a transmission shaft 1800 , the exhaust gas is used to drive the turbine 400 to rotate, the turbine 400 is used to drive the transmission shaft 1800 to rotate, and the transmission shaft 1800 is used to drive the compressor 200 to compress air.

[0123] Specifically, after the exhaust gas is discharged from the engine, it enters the turbine 400 and drives the turbine blades to rotate. The rotation of the turbine 400 is transmitted to the compressor 200 through the transmission shaft 1800, causing the blades of the compressor 200 to rotate, thereby compressing the air entering the engine 300. This process increases the density of the air entering the engine 300, increases the combustion efficiency and the power output of the engine 300, and at the same time utilizes the energy of the exhaust gas, improves the overall fuel economy, and reduces emissions.

[0124] The intake manifold 700 is provided with a throttle valve 7002, which is used to control the flow rate of air.

[0125] Specifically, the throttle valve 7002 provided on the intake manifold 700 is used to adjust the air flow through the intake manifold 700. By controlling the opening of the throttle valve 7002, the amount of air entering the compressor 200 can be accurately adjusted, thereby optimizing the intake conditions of the engine 300. This adjustment can achieve air supply under different engine operating conditions, thereby improving combustion efficiency, reducing emissions, and improving the overall performance of the engine.

[0126] The technical effect of this embodiment is as follows: by introducing the first intercooler and the second intercooler, effective temperature control of the air entering the engine and the recirculated exhaust gas is achieved. This configuration helps to reduce engine emissions, improve fuel economy, and enhance the adaptability of the engine under different working conditions; by setting a speed sensor on the engine and combining the intelligent adjustment of the control unit, dynamic control of the air and exhaust gas flow paths is achieved. When the engine speed is lower than the preset value, the system automatically opens the exhaust gas recirculation path to allow the cooled exhaust gas to enter the engine. This adjustment mechanism optimizes the combustion process under low speed conditions and improves combustion efficiency; by setting an exhaust temperature sensor on the exhaust manifold, the exhaust temperature of the engine can be monitored in real time. When the exhaust temperature is detected to be higher than the preset second temperature value, the control unit automatically opens the corresponding outlets of the intercooler three-way valve and the exhaust gas recirculation three-way valve, thereby optimizing engine performance and effectively controlling emissions; by setting a particulate collector on the exhaust manifold, effective collection and filtration of particulate matter in the exhaust gas is achieved. This not only reduces the particulate pollutants emitted by the engine, thereby reducing the negative impact on the environment, but also improves the overall efficiency and reliability of the emission system; the concentration of particulate matter in the exhaust gas is monitored in real time through the concentration sensor. When the concentration of particulate matter exceeds the preset value, the control unit automatically opens the third outlet to allow the cooled air to enter the engine. This mechanism effectively adjusts the engine's intake conditions and optimizes the combustion process, thereby reducing the generation and emission of particulate matter and improving the engine's environmental performance and combustion efficiency; through the integrated wireless communicator, remote monitoring and data transmission of key engine operating parameters are achieved. This real-time data sharing and monitoring capability improves the visibility and response speed of the engine's operating status; a water-cooled intercooler is used, which uses the efficient heat conduction characteristics of the coolant to effectively reduce the temperature of the air and exhaust gas flowing through it. This design not only helps to improve the engine's combustion efficiency and power output, but also reduces the generation of emissions caused by high temperature; the rotational energy of the turbine is effectively transmitted to the compressor through the drive shaft, realizing the recovery and reuse of exhaust gas energy. The exhaust gas drives the turbine to rotate, and the turbine drives the compressor to operate through the drive shaft, thereby increasing the density and pressure of the air entering the engine. This design not only improves the engine's combustion efficiency and power output, but also improves fuel economy and helps reduce emissions; a throttle valve is set on the intake manifold to achieve precise control of air flow. This control can adjust the amount of air entering the compressor according to the real-time needs of the engine, thereby optimizing the combustion process and improving combustion efficiency and engine performance.

[0127] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An emission reduction device for increasing engine exhaust temperature, characterized in that: include: An intercooler three-way valve (100), a compressor (200), an engine (300), a turbine (400), an exhaust gas recirculation three-way valve (500), and a control unit (600); A first inlet of the intercooler three-way valve (100) is connected to the compressor (200) via an air intake manifold (700), a first outlet of the intercooler three-way valve (100) is connected to the engine (300) via an intercooler front air intake pipe (800), and the air intake manifold (700) is used to transmit air output from the compressor (200) to the intercooler three-way valve (100); The engine (300) is connected to the turbine (400) via an exhaust manifold (900), and the exhaust manifold (900) is used to transmit exhaust gas output by the engine (300) to the turbine (400); The second inlet of the exhaust gas recirculation three-way valve (500) is connected to the exhaust manifold (900), and the second outlet of the exhaust gas recirculation three-way valve (500) is connected to the intercooler front intake pipe (800) via an intercooler front exhaust gas bypass pipe (1000); The air intake manifold (700) is provided with an air temperature sensor (7001) for detecting air temperature; The control unit (600) is connected to the intercooler three-way valve (100) and the exhaust gas recirculation three-way valve (500) respectively through wires, and the control unit (600) is used to control the opening and closing of the first outlet and the second outlet; When the air temperature is lower than a preset first temperature value, the control unit (600) is used to control the first outlet and the second outlet to open; when the first outlet is opened, the intercooler front intake pipe (800) is used to transmit the air to the engine (300); when the second outlet is opened, the intercooler front exhaust gas bypass pipe (1000) is used to transmit a preset volume of exhaust gas in the exhaust manifold (900) to the intercooler front intake pipe (800).

2. The emission reduction device for increasing the engine exhaust temperature according to claim 1, characterized in that: Also includes: A first intercooler (1100) and a second intercooler (1200); The first intercooler (1100) is arranged on the intercooler rear intake pipe (1300); the third outlet of the intercooler three-way valve (100) is connected to the engine (300) through the intercooler rear intake pipe (1300); the first intercooler (1100) is used to cool the air; the intercooler rear intake pipe (1300) is used to transmit the air to the first intercooler (1100), and send the cooled air to the engine (300); The second intercooler (1200) is arranged on the exhaust gas bypass pipe (1400) after the intercooler, and the fourth outlet of the exhaust gas recirculation three-way valve (500) is connected to the intake pipe (800) before the intercooler through the exhaust gas bypass pipe (1400) after the intercooler. The second intercooler (1200) is used to cool the preset volume of exhaust gas, and the exhaust gas bypass pipe (1400) after the intercooler is used to transfer the preset volume of exhaust gas to the second intercooler (1200), and transfer the preset volume of exhaust gas after cooling to the intake pipe (800) before the intercooler.

3. The emission reduction device for increasing the engine exhaust temperature according to claim 2, characterized in that: The engine (300) is provided with a rotation speed sensor (1500), and the rotation speed sensor (1500) is used to detect the rotation speed of the engine (300); The control unit (600) is used to control the third outlet to open, so that the air enters the engine (300) through the intercooler rear intake pipe (1300); When the rotation speed is lower than a preset rotation speed value, the control unit (600) is further used to control the fourth outlet to open so that the preset volume of exhaust gas enters the intercooler front intake pipe (800) through the intercooler rear exhaust gas bypass pipe (1400), and the intercooler front intake pipe (800) is also used to transmit the cooled preset volume of exhaust gas to the engine (300).

4. The emission reduction device for increasing the engine exhaust temperature according to claim 2, characterized in that: Also includes: Exhaust temperature sensor (1600); The exhaust temperature sensor (1600) is arranged on the exhaust manifold (900), and the exhaust temperature sensor (1600) is used to detect exhaust temperature, and the exhaust temperature is used to indicate the combustion efficiency of the fuel in the engine (300); When the exhaust temperature is higher than a preset second temperature value, the control unit (600) is used to control the third outlet and the fourth outlet to open; when the third outlet is opened, the air enters the engine (300) through the intercooler rear intake pipe (1300); when the fourth outlet is opened, the preset volume of exhaust gas enters the intercooler front intake pipe (800) through the intercooler rear exhaust gas bypass pipe (1400).

5. The emission reduction device for increasing the engine exhaust temperature according to claim 4, characterized in that: Also includes: Particle collector (1700); The particle collector (1700) is arranged on the exhaust manifold (900), and the particle collector (1700) is used to collect particulate matter in the exhaust gas.

6. The emission reduction device for increasing the engine exhaust temperature according to claim 5, characterized in that: The particle collector (1700) is provided with a concentration sensor (1701), and the concentration sensor (1701) is used to detect the concentration of particulate matter in the exhaust gas; When the concentration of the particulate matter is higher than a preset concentration value, the control unit (600) is used to control the third outlet to open, so that the air enters the engine (300) through the intercooler rear intake pipe (1300).

7. The emission reduction device for increasing the engine exhaust temperature according to claim 6, characterized in that: The control unit (600) is provided with a wireless communicator (6001), and the control unit (600) is also used to receive the air temperature sent by the air temperature sensor (7001), the exhaust temperature sent by the exhaust temperature sensor (1600), and the particulate matter concentration sent by the concentration sensor (1701), and send the intake temperature, the exhaust temperature and the particulate matter concentration to an external device, and the external device is used to receive and monitor the intake temperature, the exhaust temperature and the particulate matter concentration.

8. The emission reduction device for increasing the engine exhaust temperature according to claim 2, characterized in that: The first intercooler (1100) and the second intercooler (1200) are both water-cooled intercoolers.

9. The emission reduction device for increasing the engine exhaust temperature according to claim 1, characterized in that: Also includes: Drive shaft (1800); The compressor (200) is connected to the turbine (400) via the transmission shaft (1800); the exhaust gas is used to drive the turbine (400) to rotate; the turbine (400) is used to drive the transmission shaft (1800) to rotate; and the transmission shaft (1800) is used to drive the compressor (200) to compress the air.

10. The emission reduction device for increasing the engine exhaust temperature according to claim 1, characterized in that: The air intake manifold (700) is provided with a throttle valve (7002), and the throttle valve (7002) is used to control the flow rate of the air.

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