WO2024024990A1 - Start-up delay system having smoke reduction apparatus and start-up delay method using same - Google Patents

Abstract

The present invention relates to a start-up delay system installed in a vehicle, and comprises: a start-up signal module into which a start-up initiation signal or start-up end signal of the vehicle is input; a urea solution tank that is configured to store a urea solution supplied to a PM-NOx reduction module, and has a sensing unit that generates urea solution information by detecting the state of the urea solution; a self-diagnosis apparatus that is configured to be provided with the urea solution information from the sensing unit, and generates an event message and provides the generated event message to a driver, according to a preset criterion on the basis of the information; and an ECU module that includes a processor unit that determines whether or not the state of the urea solution is abnormal, on the basis of the urea solution information provided from the sensing unit, and is configured to control a power means of the vehicle in a preset method if the state of the urea solution is determined to be abnormal via the processor unit when the start-up initiation signal of the vehicle is input, wherein the ECU module is configured to delay an actual start-up initiation of the power means by a preset time if the state of the urea solution is determined to be abnormal when the start-up initiation signal is input into the start-up signal module.

Description

Start-up delay system equipped with a smoke reduction device and start-delay method using the same

This description relates to a start-delay system equipped with a vehicle exhaust reduction device and a start-delay method using the same.

Recently, as environmental pollution issues have begun to emerge as a major issue, eco-friendly vehicles that do not use fossil fuels, such as electric vehicles, hydrogen vehicles, solar-powered vehicles, and hybrid vehicles, are being actively developed and sold.

Despite the emergence of eco-friendly cars, cars that use gasoline or diesel as fuel still dominate the automobile market, and are expected to remain so for a considerable period of time.

Likewise, in the case of internal combustion engine vehicles that use fossil fuels such as gasoline or diesel, there is a serious problem of environmental pollution caused by exhaust gases. In particular, in the case of diesel vehicles such as buses and trucks, emissions of soot, nitrogen oxides (NOx), and fine dust including exhaust fumes are recognized as serious problems, and each country has established related regulations to solve the exhaust gas problem of diesel vehicles. Regulations have been established to strictly regulate exhaust gas emissions.

Known methods for treating such exhaust gas include the oxidation catalyst method, the NOx catalyst method, and the DPF (Diesel Particulate Filter) method for removing fine dust including soot. Since diesel engines are operated with excess air in most areas, a large amount of oxygen is emitted in the exhaust. Methods for reducing NOx based on the presence of oxygen include a SCR (Selective Catalytic Reduction) catalyst coated with copper or iron ions and a method of selectively decomposing NOx using ammonia as a reducing agent.

In this SCR system, ammonia is generated using urea instead of ammonia gas as a reducing agent, and the urea water stored inside the urea storage tank is automatically supplied to the dosing unit in the required amount, which is usually used as fuel. Approximately 4% of urea is consumed compared to the amount consumed.

In the conventional SCR system, a urea water detection sensor is applied to the urea water tank to measure the remaining amount and components of urea water to determine whether urea water is depleted or defective. Currently, laws related to SCR urea water in North America and Europe are enacted to provide warning means in case of depletion or defect of urea water. Most vehicles equipped with SCR systems rely heavily on visual warnings.

Due to the borrower's lack of awareness of the device and the inconvenience of refilling the urea solution, there are many cases of non-replenishment of the urea solution. Currently, the majority of car owners purchase urea solution directly through the installed OBD terminal or visit an after-sales service site to recharge the urea solution. When there is a shortage of urea solution, there is only an alarm display and no additional penalty device, so it is difficult to expect voluntary replenishment by the borrower.

If the urea aqueous solution tank does not have enough urea solution, or components other than the urea solution are injected, or if the SCR device does not operate normally, there is a problem in that it is difficult to expect a reduction effect of nitrogen oxides (NOx).

Therefore, in recent years, the need for technology to reduce pollutants such as nitrogen oxides by inducing car owners to voluntarily refill the urea solution is increasing.

One aspect of the present invention is to induce the car owner to voluntarily refill the urea solution and limit the poor quality of urea solution, malfunction of the PM-NOx reduction device, and arbitrary removal/manipulation, thereby reducing the starting delay of pollutants such as nitrogen oxides. It's about the system.

In particular, the present invention does not significantly affect the car owner (or driver) in normal starting, but adds a penalty for insufficient urea water storage, poor urea water quality, malfunction of the PM-NOx reduction device, and arbitrary removal/manipulation to remind the car owner. We aim to provide a stable startup delay method that can

One embodiment of the present invention to solve the above problems is a start delay system installed in a vehicle, including a start signal module 110 through which a start signal or end signal of the vehicle is input; A urea water tank 140 configured to store urea water supplied to the PM- _NO ); A self-diagnosis device (OBD, On Board Diagnostics) that is configured to receive information according to the storage amount of the number of elements from the sensing unit 142, and generates an event message based on a preset standard based on the information and provides it to the driver. (150); And a processor unit 122 that determines the storage amount and concentration of urea water, malfunction of PM- _NO It is an ECU (electronic control unit) module 120 that, when a vehicle start signal is input, causes insufficient urea storage amount or concentration abnormality, PM-NO _x reduction device malfunction, and random removal/ An ECU module 120 configured to control the vehicle's power means 160 in a preset manner when it is determined to be an operation; Includes, the ECU module 120, when the starting signal is input to the starting signal module 110, the urea solution tank 140 is a PM-NO _x reduction device due to insufficient urea storage amount or concentration abnormality. Provided is a start-up delay system configured to delay the actual start-up of the power means 160 by a preset time when malfunction or arbitrary removal/manipulation is determined.

According to one embodiment of the present invention, the self-diagnosis device 150, when the Nth start-up end signal is input from the start-up signal module 110, determines the stored amount and concentration of urea water from the sensing unit 142. It is configured to receive the final information according to the information, and when the N+1th start-up start signal is input, the processor unit 122 can determine the insufficient urea water storage amount and concentration abnormality based on the final information.

According to one embodiment of the present invention, the processor unit 122 is set in advance as a reference amount for the urea water storage shortage based on the ratio value compared to the total capacity of the urea water tank, and the final information is set to determine the urea water storage amount shortage. If it is less than the standard amount, it is determined that the urea water storage amount is insufficient, and the section below the standard amount of the urea water storage shortage is pre-divided into the first section to the Kth section, and in each of the first to Kth sections, a differential The start-up delay application time can be set in advance.

According to one embodiment of the present invention, the processor unit 122 presetes a reference value of the urea solution concentration based on the urea solution tank concentration value, and when the final information is less than the standard amount of the urea solution concentration, It is determined that the urea concentration is poor, and the section with poor urea concentration is pre-divided into a first section to a K-th section, and a differential start-up delay application time is preset in each of the first to K sections. You can.

According to one embodiment of the present invention, the processor unit 122 determines the temperature sensor and NOx sensor values attached to the PM-NO _x reduction device to determine malfunction and arbitrary removal/manipulation of the existing PM-NO _x reduction device. If the sensor value range is different from the usual input range, malfunction or arbitrary removal/manipulation can be determined.

According to one embodiment of the present invention, the self-diagnosis device 150, when the N+1 ignition start signal is input, detects from sensors attached to the sensing unit 142 and the PM-NO _x reduction device. It may be configured to receive additional current information according to the storage amount of the number of elements and determine whether there is an abnormality through comparison of the final information and current information.

According to one embodiment of the present invention, the starting signal module 110 is a key box module 210 through which an ignition start signal or ignition end signal is input through an identification key 201 uniquely assigned to the vehicle. The key box module 210 is configured to transmit the ignition start signal and ignition end signal to the ECU module 120 through the ignition delay relay module 130. (130) may be configured to be connected in a Normal Close (NC) state.

According to one embodiment of the present invention, the preset time of the ECU module 120 is the actual start of the power means 160 from immediately after input of the start start signal until the ECU module 120 is operated. A first time delay, which is performed through the delay circuit 132 of the relay module 130 for start-up delay; And a second device that delays the actual start-up time of the power means 160 when it is determined through the processor unit 122 that there is insufficient urea water storage amount and concentration abnormality, malfunction of the PM-NO _x reduction device, and arbitrary removal/manipulation. hour; It is composed of the total of, and the relay module 130 for starting delay is set to be maintained in the open state for the first time and then change back to the closed state when the first time has elapsed. You can.

Meanwhile, the present invention is a method using the above-described start-up delay system, which includes (a) when the N-th start-up end signal is input from the start-up signal module 110, the storage amount and concentration of urea water from the sensing unit 142, A step of transmitting final information according to the PM-NO _x reduction device sensor to the self-diagnosis device 150; (b) the driver of the vehicle inputting the N+1 ignition start signal; (c) A step of comparing, in the processor unit 122, a preset reference amount and concentration standard amount for insufficient storage amount of urea water and final information from a PM-NO _x reduction device sensor, wherein the final information is the reference amount and If the concentration is above the standard amount or the PM-NO _x reduction device sensor is above, determining it as abnormal; and (d) in step (c), if it is determined that urea water storage amount is insufficient, concentration is abnormal, or PM _- NO A step of delaying the actual start of the engine by a preset time, in which events related to insufficient urea water storage amount and concentration abnormalities in the cluster 180 of the vehicle, and PM-NO _x reduction device abnormalities (reduction device malfunction, arbitrary removal/manipulation of the device) displaying a message; Provides a method including.

According to one embodiment of the present invention, in step (c), (c1) current information according to the storage amount and concentration of urea water is further provided from the sensing unit 142, and additional comparison is made between the final information and the current information. A step of determining whether urea water is charged through; It further includes, in step (c1), charging of the urea solution in the urea tank 140 is performed between the time when the N-th start-up end signal is generated and the time when the N+1-th start-up start signal is generated. If it is determined that the start delay display of the vehicle cluster 180 is switched to startable, it can be set to be displayed.

In addition, receiving additional current information from the PM-NO _x reduction device sensor and determining whether the PM-NO _x reduction device is normal through additional comparison of the final information and current information; It further includes, between the time when the N-th start-up end signal is generated and the time when the N+1-th start-up start signal is generated, the PM _- NO If it is determined that the action has been performed, the start delay display of the vehicle cluster 180 may be set to be displayed by switching to start possible.

According to one embodiment of the present invention, pollutants such as nitrogen oxides can be reduced by inducing the car owner to voluntarily refill the urea solution.

According to one embodiment of the present invention, a structure is provided to stably perform a start delay so that the car owner is reminded by adding a penalty when the storage amount of urea water is insufficient. In particular, by applying a relay module for start delay in a specific way, Since it does not significantly affect the car owner (or driver) in normal starting, stability can be greatly improved.

Figure 1 is an overall configuration diagram of a start-up delay system according to the present invention.

Figure 2 is a schematic diagram schematically showing the process of determining insufficient storage amount and concentration of urea water using the start-up delay system according to the present invention.

Figure 3 is a schematic diagram showing differentially setting the start-up delay application time in the start-up delay system according to the present invention.

Figure 4 shows an example of the OBD alarm display of the cluster in a vehicle to which the start-up delay system according to the present invention is applied.

Figure 5 is a schematic diagram schematically showing the operation of the relay module for starting delay of the starting delay system according to the present invention.

Figure 6 is a flowchart of a method using the start-up delay system according to the present invention.

Figure 7 is a schematic diagram showing that the start-up delay system according to the present invention delays the actual start of the engine by determining additional states related to the number of elements in addition to the storage amount of the number of elements.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the present invention is not limited to specific embodiments, but includes various modifications, equivalents, and/or alternatives to the embodiments of the present invention. In connection with the description of the drawings, similar reference numbers may be used for similar components.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the existence of the corresponding feature (e.g., a numerical value, function, operation, or component such as a part). , and does not rule out the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first", "second", "first", or "second" may describe various elements in any order and/or importance, and may refer to one element as another. It is only used to distinguish from components and does not limit the components. For example, a first component may be renamed a second component without departing from the scope of rights described in this document, and similarly, the second component may also be renamed to the first component.

The expression “configured to” used in this document may mean, for example, “suitable for,” “having the capacity to,” or “having the capacity to.” It can be used interchangeably with ", "designed to," "adapted to," "made to," or "capable of." The term “configured (or set) to” does not necessarily mean “specifically designed to.”

In this document, for example, “command”, “instruction”, “control information”, “message”, etc. transmitted and received between the first electronic device(s) and the second electronic device(s). “Information”, “data”, “packet”, “data packet”, “intent” and/or “signal”, regardless of the expression, means a human-perceivable idea or specific electrical expression (e.g. It may contain (digital symbol/analog physical quantity) or refer to itself. It will be apparent to those skilled in the art that the exemplary expressions listed above can be interpreted in various ways depending on the context in which they are used. In this document, “A is greater than B” not only means “A is greater than B,” but also includes “A is equal to or greater than B.”

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted to have the same or similar meaning as the meaning they have in the context of related technology, and unless clearly defined in this document, they may be interpreted in an ideal or excessively formal sense. It is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

Hereinafter, the start-up delay system according to the present invention will be described with reference to the drawings. It is presumed that the start-up delay system according to an embodiment of the present invention is applied to a vehicle, and it is specified in advance that there are no restrictions on the type, size, shape, method, or purpose of the vehicle.

Figure 1 is an overall configuration diagram of a start-up delay system according to the present invention.

The starting delay system according to the present invention largely includes a starting signal module 110, an ECU module 120, a relay module for starting delay 130, a urea tank 140, a self-diagnosis device 150, and a power means 160. , includes a PM-NOx reduction module 170 and a cluster 180.

The starting signal module 110 performs the function of manipulating the starting signal of the vehicle. A ignition start signal or ignition end signal is input. Referring to Figure 5, the starting signal module 110 may be composed of a key box module 210. The key box module 210 is configured to input an ignition start signal and an ignition end signal through an identification key 201 uniquely assigned to each vehicle.

Instead of inserting an identification key, the smart key method can be applied, and the 'start button' placed on one side of the driver's seat performs that function. The description will be based on the fact that the key box module 210 is installed.

The starting signal line of the key box module 210 can be connected in NC (Normal Close) state using the relay module 130 for starting delay. This is to not affect starting when the relay module for starting delay 130 is not in operation. In the ECU module 120, a 'start-up delay application time' that delays the actual start-up time of the vehicle power means 160 is preset.

First, referring to FIG. 5, the start-up delay application time, which is a preset time, is made up of the sum of the first time and the second time. The first time is the time to delay the actual start of the power means 160 from immediately after the input of the start signal until the ECU module 120 is operated. This is performed through the delay circuit 132 of the relay module 130 for starting delay.

When the starting signal is input, delaying the starting through the delay circuit 132 is meaningful in securing time for the ECU module 120 to operate and determine whether the urea storage amount is insufficient. Roughly speaking, it is preferable that the delay circuit 132 of 'less than 1 second' is applied. This is because it is not desirable for the first time itself to have a large weight in the ‘start-up delay application time’.

To briefly explain, the processor unit 122 of the ECU module 120 imposes a penalty for startup delay based on element number information. Here, the urea water information is ① urea water storage amount information stored in the urea water tank 140, ② urea concentration information detected through the sensing unit 142, ③ malfunction information of the PM-NOx reduction module 170, and ④ random removal. and information about operations; It is configured to include at least one of the information groups including.

Below, for convenience of explanation, the penalty method for start-up delay will be described based on the urea water storage amount information stored in the urea water tank 140 among the above information. However, it is most desirable to determine all of the above information ① to ④ and inform the driver of whether the current urea state is abnormal.

Specifically, if a penalty for starting delay is determined due to insufficient or abnormal urea water storage, malfunction of the PM-NOx reduction device, or arbitrary removal/manipulation, the second time is applied as a penalty after the first time. On the other hand, if the processor unit 122 does not determine that the urea water storage amount is insufficient or the concentration is abnormal, the PM-NOx reduction device malfunctions, or is removed/manipulated arbitrarily, the vehicle is started immediately after only the first time is applied.

When the connection circuit between the relay module 130 for starting delay and the ECU module 120 receives the starting signal, the connection state of the relay module 130 for starting delay 130 is in the 'OPEN' state for approximately 1 to 2 seconds. Change it to '. The above time of 1 to 2 seconds (referred to as 'state change time') can be appropriately changed depending on the designer's choice. When the state change time elapses, the connection state of the start delay relay module 130 is automatically converted back to the closed state.

When the starting start signal is not used as the driving power of the starting delay relay module 130, no power consumption is generated and it is configured to be connected in NC (Normal Close) state, so even if a circuit problem occurs, It is stable and does not provide problems in starting the vehicle.

The ECU module 120 is configured to communicate with multiple components. The inventor's start-up delay system is a system that delays the start of a vehicle based on urea storage amount or concentration abnormality, PM-NOx reduction device malfunction, and arbitrary removal/manipulation. It reduces urea storage amount and concentration abnormality and PM-NOx reduction. Its main function is to determine device malfunction and arbitrary removal/manipulation. Such urea water storage amount shortage and concentration abnormalities are performed by the processor unit 122. That is, the processor unit 122 of the ECU module 120 performs calculation processing.

When the vehicle ignition start signal is input, the ECU module 120 determines through the processor unit 122 insufficient urea water storage amount or concentration abnormality, malfunction of the PM-NOx reduction device, or arbitrary removal/manipulation, using a preset method. The power means 160 of the vehicle is controlled. Specifically, when the starting signal is input to the starting signal module 110, if the urea tank 140 is determined to have insufficient urea storage amount or abnormal concentration, malfunction of the PM-NOx reduction device, or arbitrary removal/manipulation, the power This is a method of delaying the actual start-up of the means 160 by a preset time.

The urea water tank 140 is configured to store the urea water supplied to the PM-NOx reduction module 170. The urea tank 140 is equipped with a sensing unit 142 to detect the storage amount and concentration of urea water in the tank. The urea water storage tank 140 adopts a normal configuration, and the urea water tank 140 is equipped with a urea water pump for pumping urea water to the decomposition unit. The sensing unit 142 includes a sensor related to a variable factor that can detect a variable factor for the urea water, for example, a defective state of the urea water in the urea water tank 140 (defective state of the urea water component). It includes both a defect detection sensor that determines and/or a remaining amount detection sensor that detects the remaining amount of urea water filled in the urea water tank 140.

The self-diagnosis device 150 may be named OBD (On-Board Diagnosis). It is a configuration that continuously senses the status of the vehicle's components and diagnoses the status of the components based on the sensing information. Additionally, it can store operation/error data like a black box. Specifically, the measured exhaust temperature and the operating state of the power means (eg, engine) may be stored in the self-diagnosis device 150. For this purpose, the self-diagnosis device 150 may include a memory unit (not shown).

Specifically, when applying the penalty, the sensing value of the stored information (intake flow rate, exhaust pressure, temperature by exhaust location, NOx, etc.), the penalty application time (starting delay application time), and the malfunction of the PM-NOx reduction device, as well as arbitrary removal and manipulation, are checked. It is possible to analyze.

In addition, it is meaningful in that if the driver avoids the function using an irregular method, this can be confirmed through data and proof can be provided.

The power means 160 is a device that provides power to the vehicle, and can receive fuel to generate power and then discharge exhaust gas. The power means 160 according to one embodiment may be a diesel engine.

The PM-NOx reduction module 170 is equipped with an exhaust gas SCR catalyst and is composed of a decomposition unit that decomposes the exhaust gas into exhaust gas (NOx) by spraying urea water pumped from the urea water tank 140. Cluster 180 may be a known configuration of a driver's seat instrument panel. The cluster 180 is configured to receive an event message from the self-diagnosis device 150. Here, the event message may be provided as phrases or symbols such as 'insufficient urea storage amount', 'apply 5 second startup delay', or 'start possible'. Of course, it may be provided to the driver in a visual way, such as a lamp 162, or may be provided in a combination of an auditory way, such as a buzzer 164.

Meanwhile, the ECU module 120, the urea tank 140, and the self-diagnosis device 150 may all be configured to transmit and receive information through CAN (Controller Area Network) communication.

Figure 2 is a schematic diagram schematically showing the process of determining insufficient storage amount of urea water using the start-up delay system according to the present invention.

Referring to FIG. 2, the self-diagnosis device 150 is configured to receive final information according to the storage amount of the number of elements from the sensing unit 142 when the Nth start-up end signal is input from the starting signal module 110. Here, the final information refers to the storage amount of the confirmed number of elements when the Nth ignition completion signal is input and the vehicle ignition is terminated. The final information may be stored in the memory unit of the self-diagnosis device 150.

When the N+1 start signal is input, the processor unit 122 determines whether the element number storage amount is insufficient based on the final information. In other words, the amount of urea stored immediately before is checked, and when a start signal is input, a penalty for start delay is given to the driver based on this.

The processor unit 122 has a preset reference amount for insufficient storage of the number of elements, and this can be changed by the designer or driver. It is desirable that these storage amounts and reference amounts are set based on ratio values. For example, the standard amount of urea water storage shortage may be set to 20%. If the storage amount included in the final information is 19%, the processor unit 122 may determine that the storage amount of the number of elements is insufficient.

As shown in FIG. 2, the number of elements can be replenished by the driver between the time of generation of the Nth ignition end signal and the time of generation of the N+1th ignition start signal. Even in this case, it is not desirable to determine the insufficient storage amount of the number of elements based on the final information, so when the N+1th start-up start signal is input, the current information is regenerated.

That is, when the N+1 start signal is input, the urea water storage amount in the urea water tank 140 is checked, the final information and the current information are compared, and then the urea water storage amount is determined to be insufficient. In addition, it is possible to determine the insufficient storage amount of the number of elements using only the current information, but in this case, it takes time to sense the storage amount of the number of elements and perform calculations again in the processor unit 122 based on this, so the calculation processing and In order to minimize the associated startup delay time, it may be desirable to determine the urea storage amount shortage using only the final information.

Referring to Figure 3, the standard amount of urea water storage shortage based on the ratio value compared to the total capacity of the urea water tank is set in advance, and if the final information is less than the standard amount of urea water storage shortage, it is determined that the urea water storage amount is insufficient. .

At this time, the section below the standard amount of urea storage shortage is pre-divided into the first section through the K-th section, and the start-up delay application time can be set in advance in each of the first through K sections, differentially or stepwise. there is.

Figure 3 shows a state divided into first to third sections. An example is given where the standard amount of urea storage shortage is set to 20%. The first section can be set to a start-up delay of 60 seconds, the second section can be set to a start-up delay of 30 seconds, and the third section can be set to a start-up delay of 10 seconds. Of course, the start-up delay application time can not only be set additionally, but can also be changed by the designer. All of this information can be stored in the ECU module 120.

Meanwhile, in Figure 3, the start-up delay is implemented differentially based on the insufficient urea water storage amount, but the start-up delay can also be implemented differentially based on the concentration information of the urea solution in addition to the urea water storage amount information. As an example, if the final information is less than the standard amount of the urea concentration, it is determined that the urea concentration is poor, and the poor urea concentration section is pre-divided into the first section through the Kth section, and the first section through the Kth section. For each K section, the start-up delay application time can be set in advance differentially.

Figure 4 shows an example of the OBD alarm display of the cluster in a vehicle to which the start-up delay system according to the present invention is applied. The cluster 180 may be configured to provide information to the driver as to whether the vehicle is in a delayed start state or a state in which the vehicle can be started, as well as whether urea supplementation is necessary and, in the case of a delayed start state, the specific time and storage amount of urea water. The display method or type of information can be optimally selected depending on the designer's choice.

Referring to FIG. 6, a method using the start-up delay system according to the present invention will be described. Any explanation that overlaps with the above information will be omitted.

The method includes steps S110 to S140.

Step (S110) is a step in which, when the Nth start-up end signal is input from the start-up signal module 110, final information according to the storage amount of the number of elements is transmitted from the sensing unit 142 to the self-diagnosis device 150. .

Step S120 is a step in which the driver of the vehicle inputs the N+1 ignition start signal. This can be designed using the key box module 210 method described above.

Step (S130) is a step of comparing, in the processor unit 122, the final information with a preset standard amount of insufficient storage amount for the number of elements. If the final information is less than the reference amount for insufficient storage amount of the number of elements, it is determined that the storage amount of the number of elements is insufficient. This is the step. If it is determined that the urea storage amount is insufficient, a penalty is imposed on the driver in the form of a delayed start. This is performed in step S140.

Step S140 is a step of delaying the actual starting of the power means by a preset time through the start delay relay module 130 when it is determined in step S130 that the storage amount of urea water is insufficient, wherein the vehicle This is the step of displaying an event message about insufficient element storage in the cluster.

In particular, step S130 further includes step S131.

Step S131 is a step of receiving additional current information according to the storage amount of urea water from the sensing unit 142 and determining whether or not urea water is charged through additional comparison of the final information and current information.

In step S131, when it is determined that the urea solution charging of the urea solution tank 140 has been performed between the time the N-th start-up end signal is generated and the N+1-th start-up start signal is generated, the The start delay display of the vehicle cluster 180 is set to be displayed by switching to start possible.

Figure 7 is a schematic diagram showing that the start-up delay system according to the present invention delays the actual start of the engine by determining additional states related to the number of elements in addition to the storage amount of the number of elements. Referring to FIG. 7, additional details of imposing a penalty on actual start-up in the start-up delay system according to the present invention will be described.

In addition to urea water storage, there are additional aspects related to urea solution. The quality of urea water, malfunctioning NOx reduction devices, and arbitrary removal of catalytic filters and start-delay systems also require warning to drivers. The start-up delay system according to the present invention applies a start-up delay to warn the driver of these additions as well.

Specifically, Figure 7(a) relates to 'element number quality'. If the quality of urea water does not meet the preset standards, it is difficult for the SCR device to operate normally and the nitrogen oxide (NOx) reduction effect cannot occur. The quality of element water is judged based on element content. As an example, the appropriate urea content may be set to 26% to 40%. If the urea content exceeds the above-described appropriate urea content, it is desirable to apply a start-up delay to warn the driver. At this time, it can be applied differentially based on the driving time of the power means (eg, engine driving time). As an example, if the driving time of the power means has passed 10 hours, a start-up delay of 10 seconds may be applied, and if 20 hours have passed, a start-up delay of 60 seconds may be applied.

Figure 7(b) relates to NOx reduction device malfunction. This is to force the driver to quickly check if a malfunction is detected. As an example, if the driving time of the power means has passed 10 hours after malfunction detection, a 10-second startup delay can be applied, and if 20 hours have passed, a 60-second startup delay can be applied.

Figure 7(c) relates to arbitrary removal and manipulation by the driver. This is because if the driver arbitrarily changes or uses the start delay system, it can cause fatal problems to the vehicle and PM-NOx reduction device. Judgment of arbitrary removal and manipulation is based on a preset algorithm. It may be designed to be confirmed through the ECU module 120 or the self-diagnosis module 150. The primary reason for this is to warn the driver of arbitrary removal and manipulation, and the secondary reason is to inform the driver that some of the driver's actions constitute arbitrary removal and manipulation if the driver is not aware of the arbitrary removal and manipulation. there is. For these reasons, in case of arbitrary removal or manipulation, it is desirable to provide a warning alarm through a start-up delay to the driver. As an example, if the driving time of the power means has passed 10 hours after arbitrary removal and tampering detection, a 10-second startup delay can be applied, and if 20 hours have passed, a 60-second startup delay can be applied. .

7 (a) to (c) can be provided to the driver through the vehicle's cluster 180, and the above numerical details can be set to optimal values according to the designer's selection.

Above, the present invention has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but these are merely illustrative examples, and various modifications and equivalent alternatives can be made by those skilled in the art from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the scope of protection of the present invention should be determined by the scope of the patent claims.

Project information regarding the national research and development project that supported this application invention is as follows.

[Assignment number] 6410100040

[Assignment number] 20206410100040

[Ministry Name] Ministry of Trade, Industry and Energy

[Project management (professional) organization name] Korea Institute of Energy Technology Evaluation and Planning

[Research project name] Energy technology development project

[Research project name] Development of Tier-4 emission reduction technology through remanufacturing technology for old engines of construction machinery under 300kW and development of electronically controlled post-processing devices

[Contribution rate] 1/1

[Name of project carrying out organization] Clean Earth Co., Ltd.

[Research period] 2020.05.01 ~ 2022.12.31

Claims (9)

1. As a start-delay system installed in a vehicle,

   A starting signal module that receives a vehicle start signal or start end signal;

   A urea water tank configured to store urea water supplied to the PM-NOx reduction module, the urea water tank having a sensing unit that detects the state of the urea water and generates urea water information;

   A self-diagnosis device (OBD, On Board Diagnostics) configured to receive the element count information from the sensing unit and generating an event message based on a preset standard based on the information and providing the event message to the driver; and

   An ECU (electronic control unit) module including a processor unit that determines whether the urea count state is abnormal based on the urea count information provided from the sensing unit, and when a vehicle ignition start signal is input, through the processor unit An ECU module configured to control the power means of the vehicle in a preset manner when the urea water state is determined to be abnormal;

   Includes,

   The ECU module is,

   A start-up delay system configured to delay the actual start-up of the power means by a preset time when the start-up signal is input to the start-up signal module and the urea water condition is determined to be abnormal.
2. According to paragraph 1,

   The element number information is,

   (a) Urea water storage amount information stored in the urea water tank;

   (b) concentration information of urea water detected through the sensing unit;

   (c) Malfunction information of the PM-NOx reduction module; and

   (d) Information on arbitrary removal and manipulation;

   A start-up delay system including at least one of the information groups including.
3. According to paragraph 2,

   The self-diagnosis device is,

   When the Nth start-up end signal is input from the start-up signal module, it is configured to receive final information according to the storage amount of the number of elements from the sensing unit.

   The processor unit,

   A start-up delay system that determines insufficient urea storage amount based on the final information when the N+1 start signal is input.
4. According to paragraph 3,

   The processor unit,

   The standard amount of urea water storage shortage based on the ratio value to the total capacity of the urea water tank is set in advance, and if the final information is less than the standard amount of urea water storage shortage, it is determined that the urea water storage amount is insufficient,

   The section in which the urea water storage amount is less than the standard amount is pre-divided into a first section through a K-th section, and a start-up delay application time is differentially set in advance in each of the first section through the K-th section.

   Start-up delay system.
5. According to paragraph 3,

   The self-diagnosis device is,

   When the N+1th start-up start signal is input, the device is further provided with current information according to the storage amount of urea water from the sensing unit, and determines whether or not urea water is charged by comparing the final information and current information.

   Start-up delay system.
6. According to paragraph 2,

   The starting signal module is,

   It consists of a key box module through which an ignition start signal or ignition end signal is input through an identification key uniquely assigned to the vehicle,

   The key box module is,

   A start-up delay system configured to transmit the start-up start signal and start-up end signal to the ECU module through a start-delay relay module, wherein the start-delay relay module is configured to be connected in NC (Normal Close) state.
7. According to clause 6,

   The preset time of the ECU module is,

   A first time delaying the actual starting start of the power means from immediately after the input of the starting start signal until the ECU module is operated, which is performed through a delay circuit of the starting delay relay module; and

   a second time delaying the actual starting time of the power means when it is determined through the processor unit that the storage amount of urea water is insufficient; Consisting of the total of,

   The relay module for starting delay is,

   A start-up delay system that is set to remain in the open state for the first time and then change back to the closed state when the first time has elapsed.
8. A method using the start-up delay system according to any one of claims 1 to 7,

   (a) when the Nth start-up end signal is input from the start-up signal module, transmitting final information according to the storage amount of the number of elements from the sensing unit to the self-diagnosis device;

   (b) the driver of the vehicle inputting the N+1 ignition start signal;

   (c) comparing, in the processor unit, a preset reference amount of insufficient storage amount for the number of elements and the final information, wherein if the final information is less than the reference amount for insufficient storage amount of the number of elements, determining that the storage amount for the number of elements is insufficient; and

   (d) In step (c), if it is determined that the storage amount of urea is insufficient, delaying the actual start of the power means by a preset time through a relay module for starting delay, wherein the urea in the cluster of the vehicle is delayed. Displaying an event message regarding insufficient water storage capacity;

   Method using a start-up delay system, including.
9. According to clause 8,

   In step (c),

   (c1) receiving additional current information according to the storage amount of urea water from the sensing unit, and determining whether or not urea water is recharged through additional comparison of the final information and current information; It further includes,

   In step (c1) above,

   If it is determined that charging of the urea solution tank has been performed between the time when the N-th start-up end signal is generated and the time when the N+1-th start-up start signal is generated, the start-up delay indicator of the vehicle cluster is displayed. A method using a start-up delay system that is set to switch to enabled and display.

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