Control device and method for eliminating urgent acceleration black smoke of diesel engine of heavy truck

Abstract

The invention discloses a control device and method for eliminating black smoke generated during urgent acceleration of a diesel engine of a heavy truck. The control device comprises an accelerator controller. One end of the accelerator controller is connected with an electrical contact of the engine ECU module through a CAN bus, and the other end of the accelerator controller is connected with an accelerator pedal and a brake pedal. The accelerator controller is used for receiving signals of the accelerator pedal and the brake pedal, determining the acceleration slope of the diesel engine and controlling the diesel engine to accelerate through the engine ECU module; the accelerator controller is powered by a power supply of the heavy truck. By controlling the rotating speed of the diesel engine, slow acceleration of the diesel engine is achieved, it is ensured that the rotating speed of the diesel engine is gradually increased under the condition that air inflow of the diesel engine is sufficient, the fuel injection quantity of the diesel engine is matched with the air inflow, and therefore the problem that the diesel engine emits black smoke is solved.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engines, and in particular to a control device and method for eliminating black smoke emitted by a heavy truck diesel engine during rapid acceleration. Background Art

[0002] In the logistics transportation of finished steel products, various types of heavy-duty forklifts are usually equipped, such as large flatbed trucks, frame trucks, etc., to realize large-tonnage and high-efficiency logistics transportation operations of finished steel products; currently, most heavy-duty trucks widely use National III diesel engines, which have become the mainstream power units of non-road engineering machinery. Due to the large load capacity of heavy-duty trucks, the engine needs to provide sufficient power during transportation, especially when heavy-duty trucks are fully loaded, the load capacity often exceeds 120 tons, and the driver needs to step on the accelerator quickly to increase the engine speed, so that the heavy-duty truck can overcome the friction when fully loaded to start.

[0003] Taking the non-road Caterpillar C-13 engine as an example, it is an engine that meets the National III emission standards. However, during rapid acceleration, a large amount of thick black smoke (such as Figure 1 When the vehicle is running outdoors, a large amount of black smoke will pollute the surrounding environment. If the vehicle is running in a factory, a large amount of black smoke will adhere to the factory, causing more serious harm.

[0004] Through on-site investigation and analysis of the black smoke from heavy trucks, it is found that the main reason for the black smoke is that the driver presses the accelerator pedal to the bottom, and the engine speed rises from (idling) 800rpm / min to 1900rpm / min in a very short time. At this time, the various mechanical mechanisms of the engine intake system cannot respond in time, and the amount of oil entering the engine cylinder is much greater than the intake volume available for complete combustion, which will cause incomplete fuel combustion and cause the diesel engine to emit black smoke when the accelerator is suddenly increased. Although the black smoke can be reduced by educating and training drivers, the black smoke from heavy trucks running on the road still exists and cannot be cured from the source. In the past, exhaust purification devices were used to eliminate black smoke, but the filter holes of the purification device were blocked and damaged within a short period of use, and the black smoke problem still occurred. A lot of money was invested in the equipment, but the effect was not ideal; although it is also possible to replace the engine with a higher emission index to reduce the black smoke, it is still impossible to cure it from the source.

[0005] How to eliminate the abnormal problem of heavy truck diesel engines emitting black smoke during rapid acceleration is one of the main problems plaguing the scene. By searching the existing technologies, no relevant technology has been found to eliminate the abnormal problem of heavy truck diesel engines emitting black smoke during rapid acceleration from the source. Summary of the invention

[0006] In view of the problem in the prior art that heavy truck diesel engines emit black smoke during rapid acceleration, the purpose of the present invention is to provide a control device and method for eliminating the black smoke emitted by heavy truck diesel engines during rapid acceleration. By controlling the speed of the diesel engine, the diesel engine is slowly accelerated to ensure that the speed of the diesel engine is gradually increased when the diesel engine has sufficient air intake, so that the fuel injection amount of the diesel engine matches the air intake amount, thereby eliminating the problem of black smoke emitted by the diesel engine.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A first aspect of the present invention provides a control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration, comprising a throttle controller;

[0009] One end of the throttle controller is connected to the electrical contact of the engine ECU module through the CAN bus, and the other end is connected to the accelerator pedal and the brake pedal respectively; the throttle controller is used to receive the signals of the accelerator pedal and the brake pedal, determine the acceleration slope of the diesel engine, and control the diesel engine to accelerate through the engine ECU module;

[0010] The throttle controller is powered by a heavy truck power supply.

[0011] Preferably, the throttle controller includes a signal receiving module and a speed control module;

[0012] The signal receiving module is connected to the accelerator pedal, the brake pedal, and the engine ECU module respectively, and is used to receive signals sent by the accelerator pedal, the brake pedal, and the engine ECU module in real time;

[0013] The speed control module is connected to the signal receiving module. The speed control module obtains the current speed and target speed of the diesel engine according to the information of the signal receiving module, thereby determining the acceleration slope of the diesel engine, and controls the acceleration of the diesel engine through the engine ECU module. At the same time, the engine ECU module controls the fuel injection amount according to the speed of the diesel engine to achieve matching of the fuel injection amount and the intake amount.

[0014] Preferably, it also includes a controller power fuse arranged between the heavy truck power supply and the throttle controller.

[0015] A second aspect of the present invention provides a method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration, comprising the following steps:

[0016] S1, installing and checking whether the control device for eliminating black smoke from heavy truck diesel engines during rapid acceleration according to the first aspect of the present invention is working properly, recalibrating the throttle upper and lower limits after confirmation, and then conducting an electronic control performance test, and putting it into use after passing the test;

[0017] S2, the throttle controller receives the signal from the accelerator pedal to determine the target speed, and determines the speed-up slope of the diesel engine according to the current speed of the diesel engine and the target speed;

[0018] S3, the engine ECU module accelerates according to the acceleration slope, and controls the fuel injection amount according to the speed of the diesel engine during the acceleration process, so that the fuel injection amount of the engine matches the intake air amount.

[0019] Preferably, in step S1, the electronic control performance test includes a no-load throttle rapid acceleration test, a heavy-load throttle rapid acceleration test, a braking and emergency stop test.

[0020] Preferably, in step S2, the speed-up slope of the diesel engine is determined as follows:

[0021] When the target speed of the diesel engine is ≤1400 rpm, the speed-up slope of the diesel engine is a natural speed-up slope;

[0022] When the current speed of the diesel engine is ≤1400 rpm and the target speed is >1400 rpm, the speed-up slope of the diesel engine before the speed reaches 1400 rpm is the natural speed-up slope k1, and after the speed reaches 1400 rpm, the speed-up slope of the diesel engine is k=(n 目 -1400) / Δt;

[0023] When the current speed of the diesel engine is greater than 1400 rpm and the target speed is greater than 1400 rpm, the speed-up slope of the diesel engine is k=(n 目 -n 当 ) / Δt;

[0024] Among them, n 目 is the target speed of the diesel engine, in revolutions per minute, n 当 is the current speed of the diesel engine, in revolutions per minute, and Δt is the time required for the intake volume to change from the current intake volume to the target intake volume, in seconds per 60.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The control device for eliminating the black smoke emitted by a heavy truck diesel engine during rapid acceleration of the present invention can control the speed of the diesel engine, realize the slow acceleration of the diesel engine when it reaches a certain speed, ensure that the speed of the diesel engine is gradually increased when the diesel engine cylinder has sufficient air intake, so that the fuel injection amount of the diesel engine matches the air intake amount, thereby eliminating the abnormality of the diesel engine emitting black smoke;

[0027] 2. In the on-site application, the present invention has effectively solved the problem of black smoke coming out of the exhaust pipe of the heavy truck diesel engine during sudden acceleration. After inspection, the exhaust index of the diesel engine meets the requirements during sudden acceleration. The present invention slowly controls the acceleration of the diesel engine to achieve combustion after the oil intake and air intake are matched, which fundamentally eliminates the problem of black smoke coming out of the diesel engine during sudden acceleration, and has no impact on the daily use of heavy trucks, and can better meet the daily operation needs of heavy trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 This is a schematic diagram of a diesel engine emitting black smoke;

[0030] Figure 2 It is a structural schematic diagram of a control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration according to the present invention;

[0031] Figure 3 It is a schematic diagram of the connection between the control device for eliminating the black smoke emitted by the heavy truck diesel engine during rapid acceleration and the diesel engine of the present invention;

[0032] Figure 4 This is a detection flow chart of the control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration before it is put into use;

[0033] Figure 5 It is a flow chart of the method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration according to the present invention;

[0034] In the figure, 1. engine ECU module, 2. CAN bus, 3. accelerator pedal, 4. throttle controller, 5. brake pedal, 6. exhaust port, 7. muffler, 8. exhaust pipe, 9. exhaust bellows, 10. turbocharger, 11. diesel engine, 12. cooling water tank, 21. controller power fuse, 22. heavy truck power supply, 401. power connector, 402. power connector, 403. CAN connector, 404. CAN connector, 405. throttle connector, 406. throttle connector, 407. brake connector. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form.

[0036] The purpose of the present invention is to study a control device and method for eliminating the emission of black smoke from a heavy truck diesel engine during rapid acceleration, which can achieve the emission standard of a heavy truck diesel engine during rapid acceleration; after the driver presses the accelerator pedal hard, the diesel engine accelerates rapidly. At this time, the diesel engine has a large amount of fuel injection and insufficient air intake in a short time, and cannot completely burn all the fuel. When insufficient combustion occurs, black smoke will be generated. The present invention controls the speed of the diesel engine to achieve slow acceleration of the diesel engine after reaching a certain speed, and reserves a certain buffer time for the high-speed air intake of the diesel engine, so as to ensure that the speed of the diesel engine is gradually increased when the diesel engine cylinder has sufficient air intake, so that the fuel injection amount of the diesel engine matches the air intake amount, thereby eliminating the abnormality of the engine emitting black smoke.

[0037] Combination Figure 3 As shown, the control device provided by the present invention for eliminating the emission of black smoke from a heavy truck diesel engine during rapid acceleration includes a throttle controller 4; one end of the throttle controller 4 is connected to the electrical contact of the engine ECU module 1 through the CAN bus 2, and the other end is connected to the accelerator pedal 3 and the brake pedal 5 respectively; the throttle controller 4 is used to receive signals from the accelerator pedal 3 and the brake pedal 5, determine the acceleration slope of the diesel engine, and control the diesel engine to accelerate through the engine ECU module 1; the power supply of the throttle controller 4 is provided by the heavy truck power supply 22. The specific installation structure and position of the control device of the present invention are shown in FIG. Figure 2 As shown, during installation, it is necessary to find out the electrical circuit contacts related to the engine ECU module 1 controlling the injection quantity.

[0038] In a specific embodiment, the throttle controller 4 includes a signal receiving module and a speed control module. The signal receiving module is connected to the accelerator pedal 3, the brake pedal 5, and the engine ECU module 1 respectively, and is used to receive signals from the accelerator pedal 3, the brake pedal 5, and the engine ECU module 1 in real time. The speed control module is connected to the signal receiving module, and the speed control module obtains the current speed and target speed of the diesel engine according to the information of the signal receiving module, thereby determining the speed-up slope of the diesel engine, and controls the diesel engine to accelerate through the engine ECU module 1. At the same time, the engine ECU module 1 slowly increases the injection amount according to the speed of the diesel engine to achieve matching between the injection amount and the intake amount.

[0039] In a specific embodiment, after the driver steps on the accelerator pedal 3, during the acceleration curve of the diesel engine speed from 800 rpm to 1400 rpm, the acceleration slope k is executed according to the natural acceleration slope k1 originally set for the diesel engine, and the acceleration time is also the same as the acceleration time under the original natural acceleration slope. When the diesel engine speed exceeds 1400 rpm and starts to reach the maximum speed, it is necessary to buffer the speed increase, and the acceleration time is extended from the original acceleration time to the time Δt required for the intake volume to change (that is, the time required for the intake volume to change from low-speed intake to high-speed intake), and the acceleration slope k is correspondingly reduced. For example, the acceleration time required for the original speed to increase from 1400 rpm to 1900 rpm is 0.5s. After installing the control device of the present invention, it can be extended to 5s or 6s according to the time required for the intake volume to change, so as to reserve a certain buffer time for the high-speed intake of the diesel engine, ensure that the intake is sufficient to fully burn the fuel entering the diesel engine, and eliminate the carbon black (black smoke) generated by incomplete combustion.

[0040] Combination Figure 3 As shown, the throttle controller 4 is provided with multiple connectors connected to the accelerator pedal 3, the brake pedal 5, the engine ECU module 1, and the heavy truck power supply 22, specifically two power connectors 401 and 402, two CAN connectors 403 and 404, two throttle connectors 405 and 406, and one brake connector 407, wherein the two power connectors 401 and 402 are respectively connected to the positive and negative poles of the heavy truck power supply 22, the two CAN connectors 403 and 404 are respectively connected to the engine ECU module 1 through the CAN bus 2, the two throttle connectors 405 and 406 are respectively connected to the accelerator pedal 3, and the brake connector 407 is connected to the brake pedal 5.

[0041] Combination Figure 3 As shown, the control device for eliminating the emission of black smoke from the heavy truck diesel engine during rapid acceleration also includes a controller power supply 22 fuse 21 disposed between the heavy truck power supply 22 and the throttle controller 4, which plays a role in overload protection.

[0042] Combination Figure 4 , Figure 5 As shown, the present invention also provides a method for eliminating black smoke emitted by a heavy truck diesel engine during rapid acceleration, comprising the following steps:

[0043] S1, install and check whether the control device for eliminating black smoke from heavy truck diesel engines during rapid acceleration is working properly. After confirmation, recalibrate the upper and lower limits of the throttle, and then conduct an electronic control performance test. The device will be put into use after passing the test;

[0044] Combination Figure 4As shown, after installing the throttle controller to the designated position and confirming that the installation is firm, disconnect the electrical unit wiring of the accelerator pedal and brake pedal, and connect the throttle controller to the corresponding connector; disconnect the wiring of the accelerator pedal, brake pedal and engine ECU module, and connect the throttle controller to the corresponding connector. After the line connection is completed, confirm that the line connection is firm, the wiring is in compliance with the specification and there is no friction, check whether the line break and signal are in place, check whether the module is working normally, and if there are any problems, solve the corresponding problems, and then further check and confirm. After confirmation, recalibrate the upper and lower limits of the accelerator pedal according to the up and down travel of the accelerator pedal, and record the data in the throttle controller. In a specific embodiment, the calibrated upper limit speed of the accelerator pedal is 1900 rpm (4900mV), and the lower limit speed of the accelerator pedal is 800 rpm (90mV); then start the vehicle to perform electronic control performance tests, including no-load throttle rapid acceleration test, heavy-load throttle rapid acceleration test, braking and emergency stop test, etc.

[0045] No-load throttle rapid acceleration test: Park the heavy truck in the designated area, put the gearbox in neutral, and test the exhaust pipe for black smoke when the diesel engine accelerates rapidly under no-load conditions; when the no-load vehicle is running, test the exhaust pipe for black smoke. If there is no obvious visible smoke, the test is qualified. If the exhaust smoke density is tested, it must meet the requirements of the Class II light absorption coefficient not exceeding 0.80m as specified in the "Exhaust Smoke Density Limits and Measurement Methods for Non-road Mobile Diesel Machinery" (GB 36886-2018). -1 requirements.

[0046] Heavy-load throttle rapid acceleration test: When a heavy-load truck is loaded and the vehicle stops steadily, suddenly accelerate when starting, and observe the black smoke coming out of the exhaust pipe. Since more power is required when heavy-loaded, this is an important part of the test. After confirmation, the black smoke coming out of the exhaust pipe when the vehicle is accelerated during heavy-load operation is tested. During the above test process, if there is no obvious visible smoke, the test is qualified. If the exhaust smoke density is tested, it must meet the requirements of the Class II light absorption coefficient not exceeding 0.80m as specified in the "Exhaust Smoke Density Limits and Measurement Methods for Non-road Mobile Diesel Machinery" (GB 36886-2018). -1 requirements;

[0047] Braking and emergency stop test: Check whether the throttle controller has received the signal and no longer participates in the working output when the brake pedal and emergency stop limit are working. After all the tests are completed, it means that the throttle controller has been working normally and meets the requirements and can be put into use in heavy-duty truck diesel engines.

[0048] S2, the throttle controller receives the signal from the accelerator pedal to determine the target speed, and determines the speed-up slope of the diesel engine according to the current speed of the diesel engine and the target speed;

[0049] Combination Figure 5 As shown, the driver steps on the accelerator pedal, and after the accelerator controller receives the signal from the accelerator pedal, it determines the target speed of the diesel engine according to the upper and lower limits of the accelerator pedal, and at the same time obtains the current speed of the engine according to the engine ECU module, and determines the speed-up slope of the diesel engine in combination with the target speed;

[0050] The speed-up slope of a diesel engine is determined as follows:

[0051] When the target speed of the diesel engine is ≤1400 rpm, the speed-up slope of the diesel engine is the natural speed-up slope k1, that is, the same as the speed-up slope before the control device is installed, and the time taken to increase the speed to the target speed is the same as the time taken to accelerate before the control device is installed;

[0052] When the current speed of the diesel engine is ≤1400 rpm and the target speed is >1400 rpm, before the speed reaches 1400 rpm, the acceleration slope of the diesel engine is the natural acceleration slope k1, that is, the same as the acceleration slope before the control device is installed, and the time taken before the speed is increased to 1400 rpm is the same as the time taken for acceleration before the control device was installed. For example, before the control device is installed, the natural acceleration slope of the speed accelerating from the throttle lower limit (800 rpm) to 1400 rpm is k1, and the time consumed is 0.5s. After the control device is installed, the speed accelerating from the throttle lower limit (800 rpm) to 1400 rpm is k=k1, and the time consumed is also 0.5s. After the speed reaches 1400 rpm, the acceleration slope of the diesel engine needs to be obtained by calculation. First, the engine ECU module calculates the speed according to the target speed n 目 Determine the target intake volume required for complete combustion of the fuel, and determine the time Δt required for the intake volume to change from the current intake volume to the target intake volume, thereby determining the acceleration slope k = (n 目 -1400) / Δt.

[0053] When the current speed of the diesel engine n 当 When the speed is higher than 1400 rpm, the speed-up slope of the diesel engine needs to be calculated. First, the engine ECU module calculates the speed according to the target speed n. 目 Determine the target intake volume required for complete combustion of the fuel, and determine the time Δt required for the intake volume to change from the current intake volume to the target intake volume, thereby determining the acceleration slope k = (n 目 -n 当 ) / Δt.

[0054] Among them, n 目 is the target speed of the diesel engine, in revolutions per minute, n 当is the current speed of the diesel engine, in revolutions per minute, and Δt is the time required for the intake volume to change from the current intake volume to the target intake volume, in seconds per 60.

[0055] S3, the engine ECU module accelerates according to the acceleration slope, and controls the fuel injection amount according to the speed of the diesel engine during the acceleration process to match the fuel injection amount with the intake air amount.

[0056] The engine ECU module slowly accelerates according to the acceleration slope obtained in step S2, and slowly increases the fuel injection amount according to the speed of the diesel engine during the acceleration process, so that the fuel injection amount of the engine matches the intake air amount; wherein the increase in the speed of the diesel engine drives the speed of the fuel supply pump to increase, thereby increasing the fuel supply pressure and increasing the fuel injection amount. The present invention gradually increases the speed of the diesel engine and increases the fuel injection amount while ensuring that the engine cylinder has sufficient air intake, so that the fuel injection amount matches the intake air amount before combustion, thereby eliminating the problem of black smoke caused by insufficient intake air due to large fuel injection amount in the diesel engine.

[0057] The on-site application of the control device and method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration of the present invention has effectively solved the problem of black smoke from the exhaust pipe of a heavy truck diesel engine during rapid acceleration. After inspection by a testing agency, the exhaust index of the engine during rapid acceleration meets the requirements.

[0058] The C001 heavy trucks, C010 heavy trucks, and C031 heavy trucks used for the logistics transportation of a certain steel finished product all have the abnormal situation that the diesel engine emits black smoke when accelerating suddenly. The C001 heavy truck emits very serious smoke when accelerating suddenly, and the concentration of the emitted black smoke is relatively high, and it stays in the air for a long time before slowly dissipating. After installing the control device for eliminating the black smoke emitted by the heavy truck diesel engine during rapid acceleration of the present invention, the abnormality of emitting black smoke when accelerating suddenly is eliminated. Since it has been used since February 2021, there has been no situation where the engine emits black smoke when accelerating suddenly. The C010 heavy truck also had the problem of emitting black smoke when accelerating. Since there was no relevant technology at the time, the problem of the C010 engine emitting black smoke has always existed. The abnormality was not eliminated after the new engine was replaced. Until the control device of the present invention was installed in February 2021, the abnormality of the engine emitting black smoke was fundamentally eliminated. When the C031 heavy truck emitted black smoke, after replacing many spare parts such as the turbocharger, fuel injector, filter, etc., the abnormality of black smoke still existed. After the modification in February 2021, the abnormality of black smoke was eliminated. At present, after installing the control device of the present invention, the heavy truck used for the logistics transportation of finished steel products effectively solves the abnormal problem of heavy truck diesel engine emitting black smoke during rapid acceleration, saves a lot of manpower and financial investment, and fundamentally eliminates the big problem of heavy truck diesel engine emitting black smoke during rapid acceleration.

[0059] At present, 38 heavy-duty trucks used for logistics transportation of finished steel products are all equipped with the control device of the present invention. In the field use for more than two years, there has been no problem of black smoke emitted by the diesel engine when accelerating suddenly. This has fundamentally solved the problem of black smoke emitted by the diesel engine of heavy-duty trucks when accelerating suddenly. At the same time, the environmental protection maintenance cost of the diesel engine has been greatly reduced, realizing the environmental protection logistics transportation operation of heavy-duty trucks.

[0060] It can be seen that the present invention achieves combustion only after the oil intake and air intake are matched by slowly controlling the acceleration of the diesel engine, fundamentally eliminating the problem of the diesel engine emitting black smoke due to rapid acceleration, and has no impact on the daily use of heavy trucks, and can better meet the daily operation needs of heavy trucks.

[0061] The on-site use of the control device for eliminating black smoke from the diesel engine of a heavy truck during rapid acceleration of the present invention fundamentally eliminates the long-standing problem of black smoke from the diesel engine during rapid acceleration, realizes efficient and environmentally friendly logistics transportation of heavy trucks, and through adjustment and optimization of data, can meet the current use requirements of most heavy trucks, which fully demonstrates that the technology is very practical. At the same time, the present invention can greatly reduce the environmental protection maintenance costs of diesel engines and realize environmentally friendly logistics transportation operations of heavy trucks. It can be seen that the present invention has a very broad market promotion prospect.

[0062] In summary, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration, characterized in that: Including throttle controller; One end of the throttle controller is connected to the electrical contact of the engine ECU module through the CAN bus, and the other end is connected to the accelerator pedal and the brake pedal respectively; the throttle controller is used to receive the signals of the accelerator pedal and the brake pedal, determine the acceleration slope of the diesel engine, and control the diesel engine to accelerate through the engine ECU module; The throttle controller is powered by a heavy truck power supply.

2. The control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration as claimed in claim 1, characterized in that: The throttle controller includes a signal receiving module and a speed control module; The signal receiving module is connected to the accelerator pedal, the brake pedal, and the engine ECU module respectively, and is used to receive signals sent by the accelerator pedal, the brake pedal, and the engine ECU module in real time; The speed control module is connected to the signal receiving module. The speed control module obtains the current speed and target speed of the diesel engine according to the information of the signal receiving module, thereby determining the acceleration slope of the diesel engine, and controls the acceleration of the diesel engine through the engine ECU module. At the same time, the engine ECU module adjusts the fuel injection amount according to the speed of the diesel engine to achieve matching of the fuel injection amount and the intake amount.

3. The control device for eliminating black smoke from a heavy truck diesel engine during rapid acceleration as claimed in claim 1, characterized in that: Also included is a controller power fuse disposed between the heavy truck power supply and the throttle controller.

4. A method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration, characterized in that: The following steps are involved: S1, install and check whether the control device for eliminating black smoke from heavy truck diesel engines during rapid acceleration as described in any one of claims 1 to 3 is working properly, recalibrate the throttle upper and lower limits after confirmation, and then conduct an electronic control performance test, and put it into use after passing the test; S2, the throttle controller receives the signal from the accelerator pedal to determine the target speed, and determines the speed-up slope of the diesel engine according to the current speed of the diesel engine and the target speed; S3, the engine ECU module accelerates according to the acceleration slope, and controls the fuel injection amount according to the speed of the diesel engine during the acceleration process, so that the fuel injection amount of the engine matches the intake air amount.

5. The method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration as claimed in claim 4, characterized in that: In the step S1, the electronic control performance test includes a no-load throttle rapid acceleration test, a heavy-load throttle rapid acceleration test, a braking and emergency stop test.

6. The method for eliminating black smoke from a heavy truck diesel engine during rapid acceleration as claimed in claim 4, characterized in that: In step S2, the speed-up slope of the diesel engine is determined as follows: When the target speed of the diesel engine is ≤1400 rpm, the speed-up slope of the diesel engine is a natural speed-up slope; When the current speed of the diesel engine is ≤1400 rpm and the target speed is >1400 rpm, the speed-up slope of the diesel engine before the speed reaches 1400 rpm is the natural speed-up slope k1, and after the speed reaches 1400 rpm, the speed-up slope of the diesel engine is k=(n 目 -1400) / Δt; When the current speed of the diesel engine is greater than 1400 rpm and the target speed is greater than 1400 rpm, the speed-up slope of the diesel engine is k=(n 目 -n 当 ) / Δt; Among them, n 目 is the target speed of the diesel engine, in revolutions per minute, n 当 is the current speed of the diesel engine, in revolutions per minute, and Δt is the time required for the intake volume to change from the current intake volume to the target intake volume, in seconds per 60.

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