KR102110614B1 - Performance protection system of vehicle in accordance with pollution of filter for construction machine and method of thereof - Google Patents

Abstract

The present invention relates to a vehicle performance limiting system and method according to the degree of filter contamination of a construction machine.
The vehicle performance limiting system and method according to the filter contamination level of a construction machine according to the present invention detects the filter contamination level, performs a simple warning when the filter replacement time arrives step by step of the contamination level, and the filter level When no action is taken, the vehicle performance can be protected by limiting the remaining vehicle performance except for emergency operation.

Description

{Performance protection system of vehicle in accordance with pollution of filter for construction machine and method of thereof}

The present invention relates to a vehicle performance limiting system and method according to the filter contamination level of a construction machine, and more specifically, a construction to protect a vehicle by limiting vehicle performance when filter replacement is not made even though the filter contamination level is serious. It relates to a system and method for limiting vehicle performance according to the degree of filter contamination of a machine.

The construction system is equipped with a hydraulic system. In the hydraulic system, the operating oil circulates through various hydraulic components. Meanwhile, the operating oil may be contaminated in the process of circulating various hydraulic components. For example, foreign matter in the form of fine particles is generated when the valve is opened or closed or when the spool provided in the valve unit flows. These foreign substances contaminate the operating oil.

Meanwhile, the above-described operating oil can be purified while passing through a filter. As the working oil passes through the filter, foreign matter accumulates on the filter. In particular, the more serious the contamination of the working oil, the more foreign matter accumulates in the filter, and thus the filter can no longer act as a filter.

When the hydraulic system circulates in a state where the operating oil is contaminated, it may cause failure of various hydraulic components or shorten the life. In particular, the valve unit and various actuators have very high precision, and when foreign matters enter these components, they cause serious problems such as scratches or abrasion.

Therefore, it is necessary to take appropriate measures such as replacing the filter at an appropriate time before the degree of contamination becomes serious.

A technique for recognizing the degree of filter contamination and informing the user of the filter replacement time is described in the following patent literature.

That is, in the related art, it is only to inform the degree of contamination of the filter or when the filter is scheduled to be replaced.

Meanwhile, the construction machine is provided with an emergency operation function. For example, even if any problem occurs in the construction machine, it is possible to continue operating the construction machine when the emergency operation function is activated.

The emergency operation function opens a bypass line to bypass the filter, for example, when the filter contamination is severe and purification to the working oil is not performed. That is, the working oil is re-circulated to the hydraulic system in an unpurified state, that is, a contaminated state.

When contaminated operating oil circulates through the hydraulic system, the hydraulic system can cause fatal problems. Therefore, the emergency operation function should be used as a last resort in a true emergency.

Nevertheless, some users can continue to use construction machinery by ignoring these instructions and exploiting the emergency actuation function when information on filter replacement is displayed on the dashboard.

As described above, if the contaminated working oil continues to circulate through the hydraulic system, the construction machine may be damaged to a degree of irreparability in severe cases, and in this case, a delay in work may occur. Repairing a hydraulic system can be costly.

Republic of Korea Patent Publication No. 10-2004-0057474 (2004.07.02.) Japanese Patent Application Publication No. 2009-257103 (2009.11.05.)

Therefore, the technical problem to be achieved by the present invention is to ensure that the construction machine is normally used when the degree of contamination is low due to the degree of filter contamination of the construction machine. To provide a system and method for limiting vehicle performance according to the degree of filter contamination of construction machinery to protect a vehicle by limiting the performance of the vehicle and protecting the vehicle when measures against the filter are not taken. It has a purpose.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and another technical problem not mentioned can be clearly understood by a person having ordinary knowledge in the technical field to which the present invention belongs from the following description. There will be.

The vehicle performance limiting system according to the filter contamination level of a construction machine according to the present invention for achieving the above technical problem includes: an input unit 10 for receiving filter contamination level and filter replacement information by operating oil; A processing unit 20 that outputs filter replacement information according to the pollution level and issues a command to limit vehicle performance; And a performing unit 30 that outputs filter replacement information output from the processing unit 20 to the instrument panel and performs limitations on vehicle performance according to the command.

In addition, in the vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention, the processing unit 20 may activate an emergency operation function when outputting a limiting command of the vehicle performance.

In addition, in the vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function limits vehicle performance below a set value in comparison with normal vehicle performance, so that only the driving function can be maintained. It may be.

In addition, in the vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention, the set value may be 40% to 60% compared to normal vehicle performance.

In addition, in the vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function may be to limit the maximum value of the engine speed.

In addition, in the vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function may be to block the flow rate to all other work machines except the driving function.

The vehicle performance limiting method according to the filter contamination level of the construction machine according to the present invention for achieving the above technical problem is a first step (s10) in which the performance of the vehicle is normally maintained when the filter contamination level is input and the filter contamination level is a general stage. ); A second step (s20) in which filter replacement information is exposed when the filter replacement time is reached due to an increase in the degree of contamination of the filter; When the filter replacement is replaced, the first step (10) returns, and if the filter replacement is not made, the third step (s30) proceeds to the next step; A fourth step in which the emergency operation function is activated so that vehicle performance is limited when the filter contamination is severe (s40); And if the filter replacement is replaced after the fourth step (s40), the first step (10) returns, and if the filter replacement is not made, the process returns to the fourth step (s40) and the emergency operation function activation is maintained. Step (s50); includes.

In addition, the vehicle performance limiting method according to the filter contamination level of a construction machine according to an embodiment of the present invention, after the fifth step (s50), if the warning is not canceled, the process returns to the fourth step (s40), and when the warning is released A sixth step (s60) proceeding to the next step; And a seventh step (s70) in which history is managed by transmitting information related to the emergency operation to the management center after the warning is released.

In addition, in the vehicle performance limiting method according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function limits vehicle performance below a set value in comparison with normal vehicle performance, so that only the driving function can be maintained. It may be.

In addition, in the vehicle performance limiting method according to the filter contamination level of a construction machine according to an embodiment of the present invention, the set value may be 40% to 60% compared to normal vehicle performance.

In addition, in the vehicle performance limiting method according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function may be that the maximum value of the engine speed is limited to 1600 rpm.

In addition, in the vehicle performance limiting method according to the filter contamination level of a construction machine according to an embodiment of the present invention, the emergency operation function may be to block the flow rate to all other work machines except the driving function.

Details of other embodiments are included in the detailed description and drawings.

The vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention made as described above, filter replacement by limiting the performance of the vehicle when no action is taken on the filter even when the filter replacement time has elapsed Can be induced more actively.

In addition, the vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention can protect the hydraulic system of the vehicle before the vehicle performance is fatally degraded due to contamination of operating oil. do.

In addition, the vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention, after the performance of the vehicle is forcibly degraded, the performance of the vehicle when the problem with the filter is solved This can significantly reduce the cost and time required to restore the furnace.

1 is a view for explaining a vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention.
2 is a flow chart for explaining a vehicle performance limiting system and method according to a filter contamination level of a construction machine according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are illustratively shown to help understanding of the present invention, and that the present invention can be implemented in various ways differently from the embodiments described herein. However, in the description of the present invention, when it is determined that detailed descriptions of related known functions or components may unnecessarily obscure the subject matter of the present invention, detailed descriptions and specific illustrations will be omitted. In addition, the accompanying drawings may not be drawn to scale in order to aid the understanding of the invention, but the size of some components may be exaggerated.

On the other hand, terms to be described later are terms that are set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, so its definition should be made based on the contents throughout the present specification.

The same reference numerals refer to the same components throughout the specification.

Hereinafter, a system and method for limiting vehicle performance according to a filter contamination level of a construction machine according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a view for explaining a vehicle performance limiting system and method according to a filter contamination level of a construction machine according to an embodiment of the present invention. 2 is a flow chart for explaining a vehicle performance limiting system and method according to a filter contamination level of a construction machine according to an embodiment of the present invention.

The vehicle performance limiting system according to the filter contamination level of a construction machine according to an embodiment of the present invention includes an input unit 10, a processing unit 20, and a performance unit 30.

The input unit 10 receives filter contamination and filter replacement information by operating oil. The technique for collecting information on the filter contamination level uses a known technique, and a more detailed description is omitted.

The filter replacement information is information on whether the time to replace the filter has arrived, depending on the degree of filter contamination. Similarly, the filter replacement time uses a known technique, and a more detailed description is omitted.

The processing unit 20 determines and processes how to respond according to the degree of filter contamination. In the case of the general stage with low filter contamination, it is possible to indicate on the instrument panel that the filter is normal without taking any special measures to ensure that the hydraulic system operates normally.

In addition, the processing unit 20 posts the degree of contamination on the instrument panel and outputs filter replacement information when the filter contamination level is increased and the time to replace the filter is a caution step.

In addition, the processing unit 20 activates the emergency operation function to limit vehicle performance in a severe stage in which the filter replacement time is imminent or the filter contamination is severe.

Further, when the filter is replaced, the processing unit 20 stops command output to limit vehicle performance and returns to the normal state.

The execution unit 30 executes a command according to a command issued by the processing unit 20.

The execution unit 30 posts the degree of contamination of the filter on the instrument panel according to a command output from the processing unit 20.

In addition, the execution unit 30 outputs a warning when the replacement time of the filter has arrived and requires attention. The warning may be information that can be perceived visually or by an operator.

In addition, the execution unit 30 limits the vehicle performance when the activation for the emergency operation function is output from the processing unit 20.

The emergency operation function may be to limit vehicle performance below a set value in preparation for normal vehicle performance, and to maintain only the driving function. As a result, the worker feels uncomfortable with the work, and the worker can know that the vehicle performance decrease is a filter problem and can more actively assist the willingness to replace the filter. In other words, it is possible to induce filter exchange more actively.

Meanwhile, the set value at which vehicle performance is lowered may be adjusted to a value of 40% to 60% according to the user's will. If the vehicle performance is maintained at 40% or more compared to normal, the minimum driving operation may be a guaranteed range. When the vehicle performance is maintained at 60% or less compared to normal, damage to the hydraulic system of the construction machine can be minimized.

In addition, the emergency operation function, the maximum value of the engine speed may be limited to 1600rpm. Under normal circumstances, the engine speed is about 1700rpm, but the maximum engine engine speed is limited to 1600rpm, which significantly lowers the engine power, thereby creating a work environment with low working efficiency. Therefore, the worker can know that the vehicle performance decrease is a filter problem, and can more actively assist the willingness to replace the filter. In other words, it is possible to induce filter exchange more actively.

In addition, the emergency operation function may be to block the provision of the flow rate to all other work machines except the driving function. Thus, when the work is being performed, only a flow rate that is sufficient to return the work machine to the default position is provided, and the flow of the work flow is blocked to prevent the work of the work machine from being performed. On the other hand, by activating only the driving function, the construction machine can be moved to a place where maintenance is possible or to a safe place. That is, when the emergency operation function is activated on the construction machine, if the construction machine is continuously left at the work site, there is a possibility of another accident, so it is required to be moved to prevent a safety accident. The vehicle performance limiting system according to the filter contamination level of the construction machine according to the embodiment of the present invention is capable of moving the construction machine to a safe place as described above even if the emergency operation function is activated.

Hereinafter, a method for limiting vehicle performance according to a filter contamination level of a construction machine according to an embodiment of the present invention will be described for each step with reference to the accompanying drawings.

The first step (s10): It is a step of maintaining the performance of the vehicle normally if the filter contamination level is received and the filter contamination level is a general step. Filter contamination information can be collected using known techniques. In addition, the level of filter contamination can be understood as a general stage when the need for filter replacement is not raised. Therefore, when the filter is normal, the hydraulic system is normally operated to maintain the vehicle performance normally.

Second step (s20): This is a step in which the filter replacement information is exposed when the filter replacement time is reached due to an increase in the degree of filter contamination. The filter replacement time may be determined according to the degree of filter contamination, and the life time provided by the filter manufacturer may be considered. The life time can be suggested to be replaced every 1,000 hr, for example, based on the operating time of the construction machine. However, depending on the operating environment of the construction machine, the proposed life time and the difference may occur a lot. That is, in order to maintain the performance of a construction machine in good condition, it may be managed more conservatively than the time suggested by the filter manufacturer. For example, 1000hr is suggested by the filter manufacturer, but it is also possible to adjust the filter replacement cycle to the point of reaching 900hr according to the user's will.

Third step (s30): When the filter replacement is replaced, the first step 10 is returned, and if the filter replacement is not made, the process proceeds to the next step. That is, if the filter is replaced at an appropriate time, the filter contamination level will be good, so it is judged as a general step.

Fourth step (s40): This is a step in which the emergency operation function is activated so that the filter pollution degree is seriously progressed and the vehicle performance is limited. In other words, it can be understood that the filter replacement has not been made even though it has been announced that the filter replacement time has arrived. As such, if the filter is not replaced and the construction machine is continuously operated, the hydraulic system of the construction machine may be seriously damaged. Therefore, the emergency operation function is activated to protect the construction machine.

In the fourth step (s40), the emergency operation function may be to limit the vehicle performance to a set value or less, and maintain only the driving function, in preparation for normal vehicle performance, as described above.

In addition, the emergency operation function in the fourth step (s40), as described above, may be that the maximum value of the engine speed is limited to 1600rpm.

In addition, the emergency operation function in the fourth step (s40), as described above, may be to block the provision of the flow rate to all other work except the driving function.

Fifth step (s50): If the filter replacement is replaced after the fourth step (s40), the first step (10) is returned. If the filter replacement is not made, the process returns to the fourth step (s40) to activate the emergency operation function. This is a stage of maintenance.

Meanwhile, the method for limiting vehicle performance according to the degree of filter contamination of a construction machine according to an embodiment of the present invention may further include a sixth step (s60) and a seventh step (s70) after the fifth step (s50).

Step 6 (s60): If the warning is not canceled, the process returns to the fourth step (s40), and when the warning is canceled, the process proceeds to the next step. The fact that the warning has not been cleared means there is still a problem with the filter. Therefore, it returns to the fourth step (s40) to maintain the activation of the emergency operation function. On the other hand, that the warning has been cleared means that the problem with the filter has been solved.

Step 7 (s70): After the warning is released, the history is managed by sending information related to emergency operation to the management center. That is, it means that the problem related to the filter is solved, and the emergency operation function is deactivated to return to the normal state. Meanwhile, information related to emergency operation is sent to the management center to manage the history of construction machinery. As a result, the construction machinery can be managed more actively. For example, it is possible to record when an emergency operation has been performed, and when a failure occurs in a construction machine, it is possible to refer to information related to the emergency operation while healing the failure.

As described above, the vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention restricts the performance of the vehicle when the filter replacement time has not been taken, and replaces the filter by limiting the performance of the vehicle. Can be induced more actively.

In addition, the vehicle performance limiting system and method according to the filter contamination level of a construction machine according to an embodiment of the present invention can protect the hydraulic system of the vehicle before the vehicle performance is fatally reduced due to contamination of the operating oil do.

In addition, the vehicle performance limiting system and method according to the filter pollution degree of a construction machine according to an embodiment of the present invention, after the performance of the vehicle is forcibly lowered, the performance of the vehicle when the problem with the filter is solved This can significantly reduce the cost and time required to restore the furnace.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can understand that the present invention may be implemented in other specific forms without changing its technical spirit or essential features. will be.

Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting, and the scope of the present invention is indicated by the following claims, from the meaning and scope of the claims and equivalent concepts. It should be construed that any resulting altered or modified form is included within the scope of the present invention.

The vehicle performance limiting system and method according to the filter contamination level of a construction machine according to the present invention can be used to protect a vehicle by limiting vehicle performance when filter replacement is not made even though the filter pollution degree is serious.

10: input
20: processing unit
30: performer

Claims (12)

An input unit for receiving filter contamination and filter replacement information due to operating oil;
A processing unit 20 that outputs filter replacement information according to the pollution degree and issues a command to limit vehicle performance when no action is taken on the filter even when the filter replacement time has elapsed; And
It includes; a performing unit 30 for outputting the filter replacement information output from the processing unit 20 to the instrument panel, and performing the limitation of vehicle performance according to the command;
When processing the vehicle performance limit command, the processing unit 20 activates an emergency operation function to limit vehicle performance below a set value in preparation for normal vehicle performance, and provides flow rate to all other work machines except the driving function. Vehicle performance limiting system according to the filter contamination level of a construction machine, characterized by inducing filter replacement by blocking only the driving function.
delete delete According to claim 1,
The set value is 40% to 60% compared to normal vehicle performance
Vehicle performance limiting system according to the filter contamination level of construction machinery, characterized in that.
According to claim 1,
The emergency operation function,
Limiting the maximum value of engine speed
Vehicle performance limiting system according to the filter contamination level of construction machinery, characterized in that.
delete A first step (s10) of receiving the information of the filter pollution level and maintaining the performance of the vehicle normally when the filter pollution level is a general stage;
A second step (s20) in which filter replacement information is exposed when the filter replacement time is reached due to an increase in the degree of contamination of the filter;
When the filter replacement is replaced, the first step (s10) returns, and if the filter replacement is not made, the third step (s30) proceeds to the next step;
Emergency operation to limit vehicle performance below the set value in preparation for normal vehicle performance so that vehicle performance is limited when the filter contamination is severe, and to provide only the driving function by blocking the flow rate to all other work except the driving function A fourth step in which the function is activated (s40); And
If the filter replacement is replaced after the fourth step (s40), the first step (s10) returns, and if the filter replacement is not made, the process returns to the fourth step (s40) and the fifth operation is maintained. (s50);
Vehicle performance limiting method according to the degree of filter contamination of construction machinery, including.
The method of claim 7,
After the fifth step (s50),
If the warning is not canceled, the process returns to the fourth step (s40), and when the warning is canceled, the sixth step (s60) proceeds to the next step; And
A seventh step (s70) in which history is managed by transmitting information related to the emergency operation to the management center after the warning is released;
Vehicle performance limiting method according to the filter contamination of the construction machine further comprising a.
delete The method of claim 7,
The set value is 40% to 60% compared to normal vehicle performance
Vehicle performance limiting method according to the filter contamination of the construction machine, characterized in that.
The method of claim 7,
The emergency operation function,
The maximum engine speed is limited to 1600 rpm
Vehicle performance limiting method according to the filter contamination of the construction machine, characterized in that.
delete

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