System for reducing fuel consumption of commercial vehicle based on dynamic control of after-intercooling temperature
By dynamically controlling the intercooler temperature and adjusting the intercooler cooling area using the intercooler bypass control unit, the problem of increased fuel consumption in commercial vehicles under low and medium loads is solved, achieving fuel savings and increased combustion temperature.
Patent Information
- Application Number
- CN202423293150.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-31
AI Technical Summary
During the China VI emission standard period, the intercooler intake temperature of commercial vehicles is too low under low load, which leads to an increase in the proportion of thermal management and increased fuel consumption.
A fuel-saving system for commercial vehicles that uses dynamic control of the intercooler's after-cooling temperature automatically adjusts the cooling area of the intercooler and controls the after-cooling temperature by using components such as valve plates, screws, cylinders, and servo motors, along with temperature sensors and the engine computer board, through the intercooler bypass control unit, thereby reducing the proportion of thermal management.
It effectively reduces fuel consumption in commercial vehicles, reduces energy consumption in thermal management, increases combustion temperature, achieves energy-saving effects, and has a high degree of system integration, does not require additional external piping, and occupies little space.
Smart Images
Figure CN223647913U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of commercial vehicle fuel consumption statistics technology, specifically relating to a system for reducing commercial vehicle fuel consumption based on dynamic control of intercooling after temperature. Background Technology
[0002] To meet national emission regulations, diesel engines in the China VI stage adopt high-efficiency SCR + thermal management to improve the conversion efficiency of SCR for NOx and ensure that emissions meet regulatory requirements. However, the high proportion of the engine entering thermal management will lead to a significant increase in the vehicle's fuel consumption.
[0003] In winter, the ambient temperature is low, and the engine's operating temperature is typically around 90℃. To reach this optimal operating temperature as quickly as possible, the engine needs to run for a longer period to warm up. Especially during cold starts, the engine coolant and oil temperatures are very low, and fuel atomization is poor. To overcome these adverse factors, the engine control unit increases the fuel injection volume, thus increasing fuel consumption. For example, on a cold winter morning, it may take several minutes or even longer for the engine to reach normal operating temperature after starting the car, and during this time, fuel consumption will be significantly higher than during normal driving. In the China V emission standard era, vehicle matching generally followed the principle of lower intercooler temperature for better fuel economy, provided the cost was acceptable. Therefore, the maximum horsepower cooling capacity was generally sufficient, and other horsepower models were not separately matched and developed. However, in the China VI emission standard era, especially in winter, the intercooler's cooling capacity is too strong, resulting in excessively low intake air temperature after intercooling under low and medium loads. This can easily lead to a higher proportion of thermal management, resulting in increased fuel consumption. Utility Model Content
[0004] The purpose of this invention is to provide a fuel-saving system for commercial vehicles based on dynamic control of the intercooler temperature, which solves the problem in the prior art where the intake air temperature is too low after intercooling at medium and low loads, and the increased proportion of thermal management leads to increased fuel consumption.
[0005] The technical solution adopted by this utility model is a commercial vehicle fuel consumption reduction system based on dynamic control of intercooler back temperature, including an engine, a turbocharger impeller connected to the engine, an intercooler connected to the turbocharger impeller through an intercooler front pipe, a fan connected to the intercooler, an intake unit, an exhaust unit and an engine computer board respectively connected to the engine, and an intercooler bypass control unit provided at the port of the intercooler front pipe near the intercooler.
[0006] The feature of this utility model is that,
[0007] The intercooler bypass control unit includes a valve plate, a screw, a cylinder, and a servo motor. The cylinder is located at the air intake end of the intercooler and is connected to the front pipeline of the intercooler. The valve plate is located inside the cylinder. The servo motor is connected to the bottom end of the cylinder. The screw is connected to the servo motor. The servo motor is electrically connected to the engine computer board. The screw moves along the screw by controlling the sealing valve plate through the engine computer board.
[0008] The intake unit includes an intercooler rear pipe, one end of which is connected to the engine and the other end of which is connected to the intercooler. An intercooler rear temperature sensor is located at the end of the intercooler rear pipe closest to the engine control unit.
[0009] The temperature sensor after the intercooler is electrically connected to the engine control unit (ECU).
[0010] The exhaust unit includes an exhaust pipe, one end of which is connected to the engine and the other end is connected to an aftertreatment pipe. The other end of the aftertreatment pipe is connected to an aftertreatment unit, and the output end of the aftertreatment unit is connected to an exhaust tailpipe.
[0011] The post-processing unit is equipped with a post-processing temperature sensor.
[0012] The aftertreatment temperature sensor is electrically connected to the engine control unit (ECU).
[0013] The post-treatment unit uses an SCR selective catalytic reduction device.
[0014] An ambient temperature sensor is installed on the fan and is electrically connected to the engine computer board.
[0015] The beneficial effects of this utility model are:
[0016] The present invention provides a fuel-saving system for commercial vehicles based on dynamic control of the intercooler back temperature. The intercooler system adds a bypass automatic control unit, which controls the intercooler back temperature by adjusting the cooling area of the intercooler, thereby reducing the proportion of thermal management and achieving the purpose of saving the vehicle's fuel consumption. Furthermore, the bypass control unit and the intercooler are integrated into one unit, without adding external pipelines, occupying little space, and facilitating layout and installation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature;
[0018] Figure 2 This is a schematic diagram of the structure of the intercooler bypass control unit of this utility model.
[0019] In the diagram, 1. Engine, 2. Turbocharger impeller, 3. Exhaust pipe, 4. Intercooler front pipe, 5. Intercooler bypass control unit, 6. Fan, 7. Intercooler rear pipe, 8. Intercooler rear temperature sensor, 9. Engine control unit, 10. Aftertreatment pipe, 11. Aftertreatment unit, 12. Aftertreatment temperature sensor, 13. Exhaust tailpipe, 14. Ambient temperature sensor, 15. Intercooler, 16. Valve plate, 17. Screw, 18. Cylinder, 19. Servo motor. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0021] This utility model provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0022] like Figure 2 As shown, the intercooler bypass control unit 5 includes a valve plate 16, a screw 17, a cylinder 18, and a servo motor 19. The cylinder 18 is located at the intake end of the intercooler 15 and is connected to the intercooler front pipe 4. The valve plate 16 is located inside the cylinder 18. The servo motor 19 is connected to the bottom end of the cylinder 18, and the screw 17 is connected to the servo motor 19. The servo motor 19 is electrically connected to the engine computer board 9. The screw 17 controls the movement of the sealing valve plate 16 along the screw 17 via the engine computer board 9. The intake unit includes an intercooler rear pipe 7, one end of which is connected to the engine 1. The other end of the intercooler rear pipe 7 is connected to the intercooler 15. The end of the intercooler rear pipe 7 near the engine computer board 9 is equipped with an intercooler rear temperature sensor 8. The exhaust unit includes an exhaust pipe 3. One end of the exhaust pipe 3 is connected to the engine 1, and the other end is connected to the aftertreatment pipe 10. The other end of the aftertreatment pipe 10 is connected to the aftertreatment body 11. The output end of the aftertreatment body 11 is connected to the exhaust tailpipe 13. An aftertreatment temperature sensor 12 is provided on the aftertreatment body 11. The aftertreatment body 11 uses an SCR selective catalytic reduction device, and an ambient temperature sensor 14 is provided on the fan 6.
[0023] Among them, the intercooler temperature sensor 8, the aftertreatment temperature sensor 12, and the ambient temperature sensor 14 are all electrically connected to the engine computer board 9.
[0024] The working principle of the commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature provided by this utility model is as follows:
[0025] When the engine control unit 9 detects a low set temperature signal from the ambient temperature sensor 14 and the aftertreatment temperature sensor 12 is below the thermal management temperature threshold, the high-temperature exhaust gas from the combustion of the engine 1 drives the turbocharger impeller 2, drawing in fresh air and pressurizing it to a high pressure and high temperature before entering the intercooler front pipe 4. Then, the intercooler 15 draws in ambient gas through the fan 6 to cool the high-temperature gas before intercooling. The front end of the intercooler 15 is designed with an intercooler bypass control unit 5, which can control the valve plate 16 in the intercooler bypass control unit 5 to move left and right according to the intercooler post-temperature sensor 8 and the aftertreatment temperature sensor 12 in a closed loop, adjusting the cooling area of the intercooler 15, increasing the intake temperature at the back end of the intercooler, and the gas after intercooling enters the intercooler post-pipe 7, thereby increasing the combustion temperature in the cylinder of the engine 1. The increased exhaust temperature gas enters the aftertreatment pipe 10 through the exhaust pipe 3, and then enters the aftertreatment body 11. After undergoing oxidation-reduction reactions with urea and other substances, it is discharged into the atmosphere through the exhaust tailpipe 13.
[0026] When the engine exhaust temperature rises to the thermal management threshold, it quickly exits the thermal management mode, reducing the proportion of after-treatment thermal management, thereby achieving the purpose of reducing fuel consumption. The front end of the intercooler cooling plate is equipped with a cylinder 18, which sends a signal through the engine computer board 9. The servo motor 19 controls the screw 17 to drive the valve plate 16 to move left and right, thereby adjusting the cooling area of the intercooler and achieving the purpose of automatically controlling the temperature after intercooling.
[0027] Example 1
[0028] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0029] Example 2
[0030] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 and Figure 2 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0031] The intercooler bypass control unit 5 includes a valve plate 16, a screw 17, a cylinder 18, and a servo motor 19. The cylinder 18 is located at the air intake end of the intercooler 15 and is connected to the front pipe 4 of the intercooler. The valve plate 16 is located inside the cylinder 18. The servo motor 19 is connected to the bottom end of the cylinder 18. The screw 17 is connected to the servo motor 19. The servo motor 19 is electrically connected to the engine computer board 9. The screw 17 controls the movement of the sealing valve plate 16 along the screw 17 through the engine computer board 9.
[0032] Example 3
[0033] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 and Figure 2 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0034] The intercooler bypass control unit 5 includes a valve plate 16, a screw 17, a cylinder 18, and a servo motor 19. The cylinder 18 is located at the intake end of the intercooler 15 and is connected to the front pipe 4 of the intercooler. The valve plate 16 is located inside the cylinder 18. The servo motor 19 is connected to the bottom end of the cylinder 18. The screw 17 is connected to the servo motor 19 and is electrically connected to the engine computer board 9. The screw 17 controls the movement of the sealing valve plate 16 along the screw 17 through the engine computer board 9. The intake unit includes a post-intercooler pipe 7. One end of the post-intercooler pipe 7 is connected to the engine 1, and the other end of the post-intercooler pipe 7 is connected to the intercooler 15. A post-intercooler temperature sensor 8 is provided at the end of the post-intercooler pipe 7 near the engine computer board 9.
[0035] Example 4
[0036] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 and Figure 2 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0037] The intercooler bypass control unit 5 includes a valve plate 16, a screw 17, a cylinder 18, and a servo motor 19. The cylinder 18 is located at the intake end of the intercooler 15 and is connected to the intercooler front pipe 4. The valve plate 16 is located inside the cylinder 18. The servo motor 19 is connected to the bottom end of the cylinder 18, and the screw 17 is connected to the servo motor 19. The servo motor 19 is electrically connected to the engine computer board 9. The screw 17 controls the movement of the sealing valve plate 16 along the screw 17 via the engine computer board 9. The intake unit includes an intercooler rear pipe 7, one end of which is connected to the engine 1. The other end of pipe 7 is connected to intercooler 15. After intercooling, pipe 7 is equipped with an intercooler temperature sensor 8 at the end near engine computer board 9. The intercooler temperature sensor 8 is electrically connected to engine computer board 9. The exhaust unit includes exhaust pipe 3. One end of exhaust pipe 3 is connected to engine 1, and the other end is connected to aftertreatment pipe 10. The other end of aftertreatment pipe 10 is connected to aftertreatment body 11. The output end of aftertreatment body 11 is connected to exhaust tailpipe 13. Aftertreatment body 11 is equipped with aftertreatment temperature sensor 12. Aftertreatment temperature sensor 12 is electrically connected to engine computer board 9.
[0038] Example 5
[0039] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 and Figure 2 As shown, the system includes an engine 1, which is connected to a turbocharger impeller 2. The turbocharger impeller 2 is connected to an intercooler 15 via an intercooler front pipe 4. The intercooler 15 is connected to a fan 6. The engine 1 is also connected to an intake unit, an exhaust unit, and an engine computer board 9. An intercooler bypass control unit 5 is provided at the port of the intercooler front pipe 4 near the intercooler 15.
[0040] The intercooler bypass control unit 5 includes a valve plate 16, a screw 17, a cylinder 18, and a servo motor 19. The cylinder 18 is located at the intake end of the intercooler 15 and is connected to the intercooler front pipe 4. The valve plate 16 is located inside the cylinder 18. The servo motor 19 is connected to the bottom end of the cylinder 18, and the screw 17 is connected to the servo motor 19. The servo motor 19 is electrically connected to the engine computer board 9. The screw 17 controls the movement of the sealing valve plate 16 along the screw 17 via the engine computer board 9. The intake unit includes an intercooler rear pipe 7. One end of the intercooler rear pipe 7 is connected to the engine 1, and the other end of the intercooler rear pipe 7 is connected to the intercooler 15. The intercooler rear pipe 7 is located near the engine computer board. One end of 9 is equipped with an intercooler after-temperature sensor 8; the intercooler after-temperature sensor 8 is electrically connected to the engine computer board 9; the exhaust unit includes an exhaust pipe 3, one end of which is connected to the engine 1, and the other end is connected to an aftertreatment pipe 10, the other end of which is connected to an aftertreatment body 11, and the output end of the aftertreatment body 11 is connected to an exhaust tailpipe 13; an aftertreatment temperature sensor 12 is provided on the aftertreatment body 11; the aftertreatment temperature sensor 12 is electrically connected to the engine computer board 9, the aftertreatment body 11 uses an SCR selective catalytic reduction device, and an ambient temperature sensor 14 is provided on the fan 6, the ambient temperature sensor 14 is electrically connected to the engine computer board 9.
[0041] Example 6
[0042] This embodiment provides a system for reducing fuel consumption in commercial vehicles based on dynamic control of the intercooler after-temperature, such as... Figure 1 and Figure 2 As shown, when the engine control unit 9 detects that the ambient temperature sensor 14 is below 20°C and the aftertreatment temperature sensor 12 is below the thermal management temperature threshold of 200°C, the high-temperature exhaust gas from the combustion of the engine 1 drives the turbocharger impeller 2, drawing in fresh air and pressurizing it to high pressure and high temperature before entering the intercooler front pipe 4. Then, it passes through the intercooler 15. The intercooler, through the fan 6, draws in ambient gas to cool the high-temperature gas before intercooling. The front end of the intercooler 15 is designed with an intercooler bypass control unit 5, which can control the valve plate 16 in the intercooler bypass control unit 5 to move left and right according to the intercooler post-temperature sensor 8 and the aftertreatment temperature sensor 12 in a closed loop, adjusting the cooling area of the intercooler and increasing the intake temperature at the rear of the intercooler. The gas after intercooling enters the intercooler post-pipe 7, thereby increasing the combustion temperature in the cylinder of the engine 1. The increased exhaust temperature gas passes through the exhaust pipe 3, enters the aftertreatment pipe 10, and then enters the aftertreatment body 11. After undergoing oxidation-reduction reactions with urea and other substances, it is discharged into the atmosphere through the exhaust tailpipe 13. Once the engine exhaust temperature rises to the thermal management threshold, it quickly exits the thermal management mode, reducing the proportion of after-treatment thermal management, thereby achieving the goal of reducing fuel consumption. The engine computer board 9 sends a signal, and the servo motor 19 controls the screw 17 to drive the valve plate 16 to move left and right, thereby adjusting the cooling area of the intercooler and achieving the purpose of automatically controlling the temperature after intercooling.
Claims
1. A fuel-saving system for commercial vehicles based on dynamic control of intercooler after-temperature, characterized in that, The engine (1) is connected to a turbocharger impeller (2), which is connected to an intercooler (15) via an intercooler front pipe (4). The intercooler (15) is connected to a fan (6). The engine (1) is also connected to an intake unit, an exhaust unit and an engine computer board (9). An intercooler bypass control unit (5) is provided at the port of the intercooler front pipe (4) near the intercooler (15).
2. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 1, characterized in that, The intercooler bypass control unit (5) includes a valve plate (16), a screw (17), a cylinder (18), and a servo motor (19). The cylinder (18) is located at the air inlet of the intercooler (15) and is connected to the front pipeline (4) of the intercooler. The valve plate (16) is located inside the cylinder (18). The servo motor (19) is connected to the bottom of the cylinder (18). The screw (17) is connected to the servo motor (19). The servo motor (19) is electrically connected to the engine computer board (9). The screw (17) controls the sealing valve plate (16) to move along the screw (17) through the engine computer board (9).
3. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 1, characterized in that, The intake unit includes an intercooler rear pipe (7), one end of which is connected to the engine (1), and the other end of which is connected to the intercooler (15). An intercooler rear temperature sensor (8) is provided at the end of the intercooler rear pipe (7) near the engine computer board (9).
4. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 3, characterized in that, The intercooler temperature sensor (8) is electrically connected to the engine computer board (9).
5. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 1, characterized in that, The exhaust unit includes an exhaust pipe (3), one end of which is connected to the engine (1) and the other end is connected to an aftertreatment pipe (10). The other end of the aftertreatment pipe (10) is connected to an aftertreatment body (11), and the output end of the aftertreatment body (11) is connected to an exhaust tailpipe (13).
6. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 5, characterized in that, The post-processing body (11) is equipped with a post-processing temperature sensor (12).
7. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 6, characterized in that, The after-treatment temperature sensor (12) is electrically connected to the engine computer board (9).
8. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 6, characterized in that, The post-processing body (11) is selected from SCR selective catalytic reduction.
9. The commercial vehicle fuel consumption reduction system based on dynamic control of intercooler after-temperature as described in claim 1, characterized in that, The fan (6) is equipped with an ambient temperature sensor (14), which is electrically connected to the engine computer board (9).