A control strategy and its application

Abstract

The present invention discloses a control strategy and application, including a gas pipeline and a gas source, wherein the gas inlet end of the gas pipeline is connected to the gas source, and a switch is provided on the pipeline to control the gas on and off of the gas pipeline; after the engine is started, the switch is opened or closed manually and / or automatically to control the gas on and off of the gas pipeline. The present invention has the advantages of simple control and efficient cleaning of debris.

Description

Technical Field

[0001] The present invention relates to the field of engine technology, and in particular to a control strategy and application. Background Art

[0002] Since the engine position of the harvester is very different from other mobile machinery, it is difficult for the driver to observe the operation of the engine in real time when the engine is rear-mounted or top-mounted. When crop hair and debris accumulate in high-temperature areas such as the engine turbocharger, spontaneous combustion is very likely to occur. Due to the special working environment of the harvester, once spontaneous combustion occurs, it may cause the burning of the lines and oil lines at the least, or even the whole vehicle may be scrapped or even ignite the crops to be harvested, causing significant economic losses. Nowadays, due to the complex working environment of harvesters such as rice and corn, crop debris and straw are scattered and accumulated above the engine, which is easy to cause fire when encountering the high temperature of the engine exhaust system. The fan and reverse fan technology currently used in the market are not effective, and the straw debris accumulated in the pits cannot be cleaned up.

[0003] Harvesters and harvesters are important and commonly used agricultural machines, and radiators are important parts of agricultural machines. Cleaning the radiator is an important condition to ensure the normal operation of agricultural machines. However, when agricultural machines are working, wheat bran, straw branches and leaves can easily cover the air holes of the radiator screen, affecting the ventilation efficiency of the screen, causing high temperature of the radiator, and even causing cylinder rupture in severe cases, resulting in the failure of the agricultural machine to work properly. Therefore, it is necessary to clean up the wheat bran and other debris attached to the screen.

[0004] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0005] The purpose of the present invention is to propose a radiator and engine debris removal control strategy with high control efficiency and simple structure, so as to effectively remove debris from the radiator screen and / or the engine surface.

[0006] To this end, the present invention proposes a control strategy and application.

[0007] Preferably, the present invention may also have the following technical features:

[0008] A control strategy includes a gas pipeline and a gas source. The gas inlet end of the gas pipeline is connected to the gas source, and a switch is provided on the pipeline to control the gas flow in the gas pipeline. After the engine is started, the switch is opened or closed manually and / or automatically to control the gas flow in the gas pipeline.

[0009] Furthermore, the method for manually controlling the switch also includes a manual control button, the manual control button is connected to the switch, and the switch is controlled to be opened or closed by the manual control button.

[0010] Furthermore, the method for automatically controlling the switch includes connecting the switch to an ECU and controlling the switch to be opened or closed by the ECU.

[0011] Further, the step of controlling the switch to be opened or closed by the ECU includes:

[0012] S1, identifying the working state of the engine by setting preset values ​​through the ECU;

[0013] S2. When the first preset value is reached, the ECU determines that the engine is in a no-load start state, and the switch is closed to block the gas;

[0014] S3. When the second preset value is reached, the ECU determines that the engine is in a load starting state; the ECU controls the switch to open, and the gas from the gas source passes through the switch; the ECU controls the switch to close after a certain period of time after opening, and then controls the switch to open again after a certain period of time; when the engine is in a load starting state, the ECU controls the switch to open or close.

[0015] Further, in step S1, the preset values ​​set by the ECU include preset values ​​corresponding to the engine speed, load rate and throttle opening, respectively; the engine speed, load rate and throttle opening are respectively set with two groups of preset values, a first preset value and a second preset value. When the ECU recognizes that the engine speed, load rate and throttle opening reach the first preset value, respectively, it is judged that the engine is in a no-load start state; when the ECU recognizes that the engine speed, load rate and throttle opening reach the second preset value, respectively, it is judged that the engine is in a load start state.

[0016] Furthermore, the switch is a time-delay solenoid valve, which is opened for 2-5 seconds and then closed for 10-30 minutes to perform periodic control.

[0017] Furthermore, a manual control button is included, which is connected to the switch, and the manual control button is used to control the switch to open or close, so as to control the gas flow in the gas pipeline.

[0018] Furthermore, the switch is a solenoid valve.

[0019] Furthermore, the air inlet end of the air delivery pipe is connected to the air release port of the pressure regulating valve in front of the vehicle's air tank, and the intermittent jetting of the pressure regulating valve is controlled by the pressure change of the vehicle's air tank.

[0020] A control strategy is applied in removing debris from a radiator screen and / or an engine surface, comprising an air pipe and an air source, wherein an air inlet end of the air pipe is connected to the air source, and an air outlet end blows toward debris on the radiator screen and / or the engine surface, and a switch is also provided on the pipe for controlling the flow of gas in the air pipe; after the engine is started, the switch is opened or closed manually and / or automatically to control the flow of gas in the air pipe.

[0021] Compared with the prior art, the beneficial effects of the present invention include: the branch pipes of the gas transmission pipe are respectively used to clean the debris on the radiator screen and the engine surface, ensuring that the radiator screen has good air permeability, and the branch pipe extending to the engine surface is also provided with multiple air outlets, each of which corresponds to cleaning a high-temperature area on the engine surface, effectively preventing the carbonization and ignition of debris after long-term accumulation; the switch is automatically controlled to open or close, preventing the operator from opening the switch but not closing it in time, resulting in increased gas loss of the gas source. At the same time, it can also prevent the operator from being distracted by the need to manually control the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a gas path diagram of the method of the present invention.

[0023] Figure 2 It is a schematic diagram of a manual control switch of the method of the present invention.

[0024] Figure 3 It is a schematic diagram of the ECU control switch of the method of the present invention.

[0025] Figure 4 It is the ECU control flow chart of the method of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0027] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0028] like Figure 1 A control strategy shown includes a gas pipeline 1 and a gas source 2. The gas inlet end of the gas pipeline 1 is connected to the gas source 2. A switch 10 is also provided on the pipeline to control the on-off of the gas in the gas pipeline 1. After the engine is started, the switch 10 is opened or closed manually and / or automatically to control the on-off of the gas in the gas pipeline 1. The functionality is improved by controlling the switch in multiple ways.

[0029] A control strategy is applied to remove debris from a radiator screen and / or the surface of an engine, comprising an air pipe 1 and an air source 2. The air inlet end of the air pipe 1 is connected to the air source 2, and the air outlet end blows toward the debris on the radiator screen and / or the surface of the engine. A switch 10 is also provided on the pipe to control the on-off of the gas in the air pipe 1. After the engine is started, the switch 10 is opened or closed manually and / or automatically to control the on-off of the gas in the air pipe 1. Branch pipes are separated from the air pipe to clean the debris on the radiator screen and the surface of the engine respectively, ensuring that the radiator screen has good air permeability. The branch pipe extending to the surface of the engine is also provided with multiple air outlets, each of which corresponds to cleaning a high-temperature area on the surface of the engine, effectively preventing carbonization and ignition after the debris accumulates for a long time.

[0030] Reference Figure 2 One of the control modes of the switch 10 is a method for manually controlling the switch 10, which further includes a manual control button 20. The manual control button 20 is connected to the switch 10, and the switch 10 is controlled to be opened or closed by the manual control button 20 to control the gas flow in the gas pipeline 1. By setting the manual control button 20, the operator can quickly control the switch 10 to be opened or closed as needed, and can timely and effectively clean the debris on the radiator screen and / or the engine surface.

[0031] Reference Figure 3 Another control method of the switch, the method of automatically controlling the switch 10 includes connecting the switch 10 to an ECU, and controlling the switch 10 to be opened or closed by the ECU. Automatically controlling the switch 10 to be opened or closed prevents the operator from failing to close the switch 10 in time after opening it, thereby increasing the gas loss of the gas source 2. At the same time, it can also prevent the operator from being distracted from working due to the need to manually control the switch 10.

[0032] Reference Figure 4 In a more specific automatic solution of the switch 10, the steps of controlling the switch 10 to be opened or closed by the ECU include:

[0033] S1, identifying the working state of the engine by setting preset values ​​through the ECU;

[0034] S2. When the first preset value is reached, the ECU determines that the engine is in a no-load start state, and the switch 10 is closed to block the gas;

[0035] S3. When the second preset value is reached, the ECU determines that the engine is in a load starting state; the ECU controls the switch 10 to open, and the gas flows through the switch 10 and blows toward the radiator screen and / or debris on the engine surface; the ECU controls the switch to close after a certain period of time after opening, and then controls the switch 10 to open again after a certain period of time; when the engine is in a load starting state, the ECU controls the switch 10 to open or close.

[0036] Further explanation of the above-mentioned technical solution of controlling the switch 10 by the ECU, in step S1, the preset values ​​set by the ECU include preset values ​​corresponding to the engine speed, load rate and throttle opening respectively; the engine speed, load rate and throttle opening are respectively set with two groups of preset values, a first preset value and a second preset value. When the ECU recognizes that the engine speed, load rate and throttle opening reach the first preset value respectively, it is judged that the engine is in a no-load start state; when the ECU recognizes that the engine speed, load rate and throttle opening reach the second preset value respectively, it is judged that the engine is in a load start state.

[0037] Furthermore, another control method of the switch 10 further includes a manual control button 20, which is connected to the switch 10, and the manual control button 20 is used to control the switch 10 to open or close, so as to control the gas flow in the gas pipeline. By manually and automatically controlling the opening and closing of the switch, the functionality of the technical solution is improved. Preferably, another control method of the switch 10 further includes a manual control button 20, which is connected to the switch 10, and the manual control button 20 is used to control the switch 10 to open or close, so as to control the gas flow in the gas pipeline. By manually and automatically controlling the opening and closing of the switch, the functionality of the technical solution is improved.

[0038] In some embodiments, a pressure regulating valve is further provided on the gas pipeline. Preferably, the gas pressure through the gas pipeline 1 is above 0.6 MPa, and preferably the gas pressure of the gas pipeline 1 is 0.6-0.9 MPa.

[0039] In the aforementioned technical solution, the switch is a solenoid valve, and preferably the switch is a one-way valve.

[0040] In some embodiments, the air inlet end of the air supply pipe is connected to the air vent of the pressure regulating valve in front of the vehicle's air tank, and the intermittent jetting of the pressure regulating valve is controlled by the pressure change of the vehicle's air tank.

[0041] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0042] Although what is considered as exemplary embodiments of the present invention has been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. A control system for removing debris from radiator screens and engine surfaces, characterized in that: It includes an air pipe and an air source. The air inlet end of the air pipe is connected to the air source, and the air outlet end blows toward the radiator screen and the debris on the engine surface. The air pipe is divided into branch pipes to clean the debris on the radiator screen and the engine surface respectively, ensuring that the radiator screen has good air permeability. The branch pipe extending to the engine surface is also provided with multiple air outlets, each of which corresponds to cleaning a high-temperature area on the engine surface, effectively preventing the debris from carbonizing and catching fire after long-term accumulation. The air pipe is also provided with a switch for controlling the gas on and off of the air pipe; after the engine is started, the switch is opened or closed automatically to control the gas on and off of the air pipe. Connecting the switch to the ECU, and controlling the switch to be opened or closed by the ECU; The steps of controlling the switch to be opened or closed by the ECU include: S1, identify the working state of the engine by setting the preset value through the ECU; In step S1, the preset values ​​set by the ECU include preset values ​​corresponding to the engine speed, load rate and throttle opening respectively; the engine speed, load rate and throttle opening are respectively set with two sets of preset values, a first preset value and a second preset value, and when the ECU recognizes that the engine speed, load rate and throttle opening reach the first preset value respectively, it is judged that the engine is in a no-load start state; when the ECU recognizes that the engine speed, load rate and throttle opening reach the second preset value respectively, it is judged that the engine is in a load start state; S2, ECU determines that the engine is in no-load start state, the switch is closed, and the gas is blocked; S3, the ECU determines that the engine is in a load starting state; the ECU controls the switch to be turned on, and the gas from the gas source passes through the switch; The switch is a time-delay solenoid valve, which is opened for 2-5 seconds and then closed for 10-30 minutes to perform periodic control.

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