KR101683471B1 - A coercion output limiting and monitering apparatus for in-use vehicles - Google Patents

Abstract

The present invention relates to a forced output restraining and monitoring device for a driving vehicle. More specifically, a module of on-board diagnostics (OBD) is manufactured and installed inside a vehicle to reduce emission of a nitrogen oxide (NOx) to minimize air pollution when the vehicle uses a mechanical and electronic diesel engine.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a coercion output limiting and monitoring apparatus for in-

The present invention relates to an electronic diesel engine in which when the urea aqueous solution is insufficient, the shortage is not filled, the quality of the urea aqueous solution is not good, the nitrogen oxides (NOx) In the case of LQRT, which is tampering, the control module forces the accelerator pedal and the engine ECU to be disconnected, ie, it forces a fault to generate the original Lime home mode (RPM fixed mode). It is possible to minimize the air pollution by reducing the emission of nitrogen oxides (NOx) by inducing the injection of the urea aqueous solution by forcibly causing inconvenience to the driver, and in the case of the mechanical and electronic diesel engines, Receives a signal from the control module in the case of detaching or arbitrarily modifying the device with impure intent, Or to prevent engine idling or start-up by transmitting or blocking signals transmitted to the engine. In the case of mechanical and electronic diesel engines, on-board diagnostics (OBD) (NOx) emissions by inducing injection of urea aqueous solution by transmitting the amount of urea aqueous solution of urea aqueous urea tank and LQRT to the driver through lamp, buzzer operation or voice guidance, And a forced output limiting and monitoring device for a vehicle that can be applied to mechanical, electronic, and auto vehicles that use diesel fuel such as SUV vehicles, trucks, buses, excavators, and forklifts as fuel.

In the case of conventional diesel automobiles, construction machines, and agricultural machinery, regulations for exhaust gas have been strengthened, and a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF) (CO), hydrocarbons (HC), particulate matte (PM), and the like, and a selective catalytic reduction (SCR : Selective catalystic reduction device.

However, when a selective catalytic reduction (SCR) apparatus is installed, it is inconvenient to check the urea aqueous solution tank (Urea), which is approximately one thousand liters per liter, before inserting the urea aqueous solution tank.

However, there is a problem in that it is difficult to expect a reduction effect of NOx when the urea aqueous solution tank is insufficiently filled with the urea aqueous solution or when the SCR system is not operated normally, .

In addition, it will adversely affect the pollution of air pollution that most countries of the world are interested in.

Therefore, in the case of an electronic diesel engine, in case of LQRT, the control module is operated such that the accelerator pedal and the engine ECU are not connected to each other, that is, the engine is forced to generate a fault, rpm is fixed, which causes inconvenience to the driver, thereby inducing the injection of the urea aqueous solution to reduce the emission of nitrogen oxides (NOx), thereby minimizing air pollution. In the case of mechanical and electronic diesel engines, The control unit may receive a signal from the control module in the case of removing or arbitrarily modifying the apparatus, and then transmit or block a signal transmitted from the cooperative relay to the engine control motor or the engine to control idling or starting of the vehicle. In the case of mechanical and electronic diesel engines, the vehicle interior is equipped with a self-diagnostic module (OBD: on-board diagnostics ), And the amount of urea aqueous solution in the urea aqueous solution tank and LQRT is transmitted to the driver through the lamp, buzzer operation or voice guidance, which is the output limit information monitored. Therefore, the injection of urea aqueous solution is induced to reduce the emission of NOx There is an urgent need to develop a forced output limiting and monitoring device for a vehicle that can minimize air pollution.

KR 10-2013-0034567 (March 29, 2013)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a nitrogen oxide (NOx) adsorbent for use in an electronic diesel engine, In the case of LQRT in which the dosing device is not operating normally (regulation), the control module forces the accelerator pedal and engine ECU to be disconnected, that is, forcibly generates a fault The engine rpm is fixed to operate the original lime home mode (RPM fixed mode) of the finished vehicle, thereby inconveniencing the driver, thereby forcibly injecting the urea aqueous solution, thereby reducing the emission of nitrogen oxide (NOx) And to provide a monitoring apparatus and a forced output limiting apparatus for a vehicle that can be minimized.

It is another object of the present invention to provide a system and a method for controlling a diesel engine in which a signal transmitted from a control module to an engine control motor or an engine is received from a control relay module when a driver intentionally detaches or arbitrarily modifies the device, The vehicle can be controlled so as not to idling the vehicle or starting the vehicle.

It is a further object of the present invention to provide a system and method for generating and managing an on-board diagnosis (OBD) module for a mechanical and an electric diesel engine in a vehicle interior, The present invention provides a forced output limiting and monitoring apparatus for a vehicle that can reduce the emission of nitrogen oxides (NOx) by minimizing air pollution by inducing the injection of urea aqueous solution by transmitting a buzzer operation or voice guidance to a driver.

It is another object of the present invention to provide a forced output limitation and monitoring apparatus for a vehicle, which is applicable to a mechanical vehicle, an electronic vehicle, and an auto vehicle, which use light oil such as SUV vehicles, trucks, buses, excavators, and forklifts as fuel.

In order to achieve the above object, in the forced output limiting and monitoring apparatus for a driving vehicle according to a preferred embodiment of the present invention, when the engine rpm is fixed so that the original Lime home mode (RPM fixed mode) is operated, The apparatus and the urea aqueous solution tank and the urea aqueous solution tank, the injection rate of the urea solution injected into the urea aqueous solution tank is controlled, the injection amount of the urea aqueous solution is controlled, the heating of the urea aqueous solution solution line and the urea aqueous solution tank is controlled, An urea dosing control unit having a function of controlling an amount of an aqueous solution, a quality of an urea aqueous solution, and a nitrogen oxide (NOx) sensor is connected to the internal combustion engine, When the exhaust gas is generated, a signal related to the quantity and quality of urea aqueous solution in the urea aqueous solution tank is received in the urea aqueous solution dosing control unit (Level) when the urea aqueous solution is insufficient after the NOx signal is received by the NOx sensor 1 or 2 mounted on the post-treatment exhaust pipe, and when the urea aqueous solution component is not In the case of LQRT where nitrogen oxides (NOx) deviate from the reference value and the dosing device is not operating normally (tampering), the CPU of the control module receives information via CAN communication with the urea aqueous solution dosing control unit, When the lamp or buzzer is operated and the driver does not fill the urea aqueous solution continuously and the forced output restriction is required, the CPU does not immediately execute the forced output, and the driver stores the key in the memory. A control module having a function to operate for a forced output state stored in the memory when the power is turned off; In the case of LQRT by the CPU of the control module, the CPU activates the relay so that the accelerator pedal input is directly input to the ECU by one terminal of the relay, and since the other terminal of the relay is not connected, the ECU does not have an accelerator pedal input An accelerator pedal for operating the Limp home mode; A self-diagnosis diagnostic module (OBD) installed in a vehicle interior to transmit the sensed amount of urea aqueous solution of the urea aqueous solution tank to the driver through lamp, buzzer operation or voice guidance, which is output limitation information monitoring LQRT; And limits the forced output according to the choice of the amount of urea urea, the quality of the urea urea, the standard value of nitrogen oxides (NOx), tampering of the dosing device, removal of the device or any modification And the like.

delete

delete

delete

As described above, the forced output limiting and monitoring apparatus for a vehicle according to the present invention has the following effects.

First, the present invention is applicable to an electronic diesel engine in which, when the urea aqueous solution is insufficient, the shortage is not filled, the quality of the urea aqueous solution is not good, the nitrogen oxides (NOx) In the case of LQRT, which is tampering, the control module forces the accelerator pedal and the engine ECU not to be connected, that is, it forces a fault to generate the original Lime home mode (RPM fixed mode The engine rpm is made to operate so that it is inconvenient to the driver and the forced injection of the urea aqueous solution is induced to reduce the emission of nitrogen oxides (NOx), thereby minimizing the air pollution.

In the case of a mechanical and electronic diesel engine, when a driver removes or arbitrarily modifies the apparatus with impure intent, the signal is transmitted from the control module to the engine control motor or the engine. Or shut off to prevent vehicle idling or start-up.

Third, in the case of a mechanical and electronic diesel engine, an on-board diagnostics module (OBD) is built and installed in the vehicle interior to detect the amount of urea aqueous solution in the urea aqueous solution tank and the output limit information By transmitting to the driver through operation or voice guidance, the injection of urea aqueous solution can be induced to reduce the emission of nitrogen oxides (NOx), thereby minimizing air pollution.

Fourth, the present invention is applicable to a mechanical vehicle, an electronic vehicle, and an auto vehicle that use light oil such as SUV vehicles, trucks, buses, excavators, and forklifts as fuel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining a configuration of a forced output limiting and monitoring apparatus for a vehicle according to an embodiment of the present invention; FIG.
2 is a diagram for explaining a method of fixing an engine rpm such that an original Lime home mode (RPM fixed mode) is operated in a forced output limiting and monitoring device for a vehicle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of related art or configuration may unnecessarily obscure the gist of the present invention, The description below will be omitted, and the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or the custom of the user, the operator, and the like. It should be understood that the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a forced output limiting and monitoring apparatus for a vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view for explaining a configuration of a forced output limiting and monitoring apparatus for a running vehicle according to an embodiment of the present invention. FIG. 2 is a block diagram of a forced output limiting and monitoring apparatus for a running vehicle according to an embodiment of the present invention, To illustrate a method for fixing the engine rpm so that the original Lime home mode (RPM fixed mode) is activated.

The forced output limiting and monitoring device for a running vehicle according to the present invention includes a control module 1, a relay 1-1, an accelerator pedal 2, a buzzer 3, a lamp 5, an urea aqueous solution dosing control unit 6, An aqueous solution tank 7, an SCR device 8, an engine 9, nitrogen oxide (NOx) sensors 1 and 2, a self-diagnosis diagnostic module (OBD)

As shown in FIGS. 1 and 2, in the case of fixing the engine rpm so that the original Lime home mode (RPM fixed mode) is operated in the forced output restriction and monitoring apparatus for a running vehicle according to the present invention, 8, a urea tank 7, and a urea dosing control unit 6 are connected to each other. When an exhaust gas is generated in the vehicle by driving the electronic diesel engine of the vehicle, , A signal related to the quantity and quality of the urea aqueous solution in the urea aqueous solution tank 7 is received in the urea aqueous solution dosing control unit 6 and the NOx sensor 1 or 2 (10) mounted on the post- When the level of urea aqueous solution is insufficient after the signal is delivered, when the level is not filled with urea aqueous solution, when the quality of the urea aqueous solution or the nitrogen oxide (NOx) deviates from the reference value, It does not work The CPU of the control module 1 receives information via the CAN communication with the urea aqueous solution dosing control unit 6 to operate the warning lamp 5 or the buzzer 3, If the forced output limitation is required because the urea aqueous solution is not filled, the forced memory is stored in the memory of the CPU without forcibly outputting. If the driver turns off the key and then key on again, the forced output state A control module (1) having a function to operate the control module (1); In the case of LQRT by the CPU of the control module 1, the CPU activates the relay 1-1 so that the input of the accelerator pedal 2 is directly input to the ECU by one terminal of the relay 1-1, Since the other terminal of the relay 1-1 is not connected to the ECU, the ECU assumes that there is no input of the accelerator pedal 2, so that the accelerator pedal 2 activates the Limp home mode. (5) for controlling the amount of urea aqueous solution of the urea aqueous solution tank (7) and output limiting information for monitoring the LQRT, a buzzer (3), and a driver A fault diagnosis module (OBD) 11; Respectively.

The function of each technical means constituting the forced output limitation and monitoring device for the vehicle according to the present invention will be described as follows.

As shown in FIGS. 1 and 2, when the engine rpm is fixed so that the original Lime home mode (RPM fixed mode) is activated, the SCR device 8 of the vehicle, the urea tank 7, A urea dosing control unit 6 is connected to the urea aqueous solution dosing control unit 6,

The control module 1 controls the amount and quality of the urea aqueous solution in the urea aqueous solution tank 7 in the urea aqueous solution dosing control unit 6 when the exhaust gas is generated in the vehicle by driving the electronic diesel engine of the vehicle (NOx) sensors 1 and 2 (10) mounted on a post-treatment exhaust pipe, and when the urea aqueous solution is insufficient, a shortage level is not filled (level), and when the urea aqueous solution component In the case of LQRT in which the quality or nitrogen oxide (NOx) deviates from the reference value and the dosing apparatus is not in normal operation (tampering), the CPU of the control module 1 controls the urea aqueous solution dosing control unit 6) and CAN communication to operate the warning lamp (5) or the buzzer (3). If the driver does not fill the urea aqueous solution continuously and the forced output limitation is required, the forced output is not performed immediately Stored in the memory and the CPU, and has a function that the driver acts on the force output state that was stored in the memory if the key and again on the key off.

The accelerator pedal 2 is operated by the CPU of the control module 1 in the case of LQRT so that the CPU activates the relay 1-1 so that the input of the accelerator pedal 2 by one terminal of the relay 1-1 Since the other terminal of the relay 1-1 is not connected to the ECU, the ECU assumes that there is no input of the accelerator pedal 2 so that the Limp home mode is activated. Here, 1,000RPM for passenger cars and 1200RPM for commercial vehicles are slightly different for each vehicle.

Also, in the vehicle dashboard, an accelerator pedal fault occurs and the vehicle only operates at a certain RPM. In this case, the control module design is simplified and the vehicle can be operated by compensating the RPM according to the load so that the vehicle can move to the minimum in the limp home mode of the manufacturer. However, it is preferable that the OBD also be accompanied by an indication that forced output is being restricted so that the customer is not confused.

The OBD 11 transmits the amount of urea aqueous solution in the urea aqueous solution tank 7 to the driver through operation of the lamp 5, buzzer 3 or voice guidance, which is the output limitation information monitoring the LQRT To be installed in the vehicle interior.

In the case of an electronic diesel engine as described above, the urea aqueous solution dosing control unit 6 calculates the injection rate of the urea aqueous solution (urea) injected into the urea aqueous solution tank 7, controls the injection amount of the urea aqueous solution Controls the heating of the urea aqueous solution liquid line and the urea aqueous solution tank, and has a function of controlling the exhaust temperature, the amount of the urea aqueous solution, the quality of the urea aqueous solution, and the nitrogen oxide (NOx) sensor.

In addition, the forced output and speed limiter for the running vehicle can be selected for the amount of urea urea, the quality of the urea urea, the reference value of nitrogen oxides (NOx), the tampering of the dosing device, , The output condition described below can be changed in consideration of characteristics and safety of each vehicle.

The control of the amount of urea aqueous solution (Urea) in the urea aqueous solution tank (7) receives a signal from the level sensor mounted in the urea aqueous solution tank (7) If it is less than 10%, the warning lamp lights up and the maximum output of the engine is reduced by 40%. If the urea solution is less than 5%, the warning lamp and buzzer operation or voice guidance and the maximum output of the engine are reduced by 50%.

The control of the Urea quality, the NOx reference value, and the failure of the dosing device in the urea aqueous solution tank 7 is performed by receiving signals from the NOx sensors 1 and 2 (10) mounted on the urea aqueous solution tank 7, The warning lamp lights up when the reference value is above the reference value and the warning lamp lights up and the maximum output of the engine is reduced by 40% if the reference value exceeds 30 minutes. If the reference value exceeds 1 hour, the warning lamp lights up and 60 buzzer operations per minute If the maximum power of the voice guidance and the engine is reduced by 50% and more than the standard value is sustained for more than 4 hours, the alarm lamp lights up and the buzzer operation of 120 times per minute or voice guidance and the maximum output of the engine is reduced by 60%.

Further, the control for the removal or arbitrary modification of the apparatus is an engine idle or start-up impossible.

When the operation of the selective catalytic reduction (SCR) device in the automobile or construction machine equipped with the selective catalytic reduction (SCR) device 9 is observed, when the urea (urea aqueous solution) is injected into the exhaust pipe, Ammonia. Thereafter, ammonia reacts with nitrogen oxides (NOx) to reduce nitrogen oxides (NOx). Here, urea is injected at an exhaust gas temperature of 150 占 폚 or higher, but urea is not injected at -5 占 폚 or lower.

The diesel oxidation catalyst (DOC), which is installed together with the SCR device 8, reduces carbon monoxide and hydrocarbons using a catalytic reaction at a high temperature of 150 to 300 ° C. and reduces particulate matter (PM) And increases the ratio of NO2 in the exhaust gas. Although not shown in the figure, a particulate filter (DPF) installed together with the SCR device 8 collects particulate matter (PM) and accumulates particulate matter (PM) The catalyst is activated at a high temperature of 500 to 600 ° C. by using an additive to recollect and recycle particulate matter (PM).

As described above, the forcible output limitation and monitoring device for a moving vehicle can be applied to a mechanical vehicle, an electronic vehicle, and an auto vehicle, which use light oil such as SUV vehicles, trucks, buses, excavators, and forklifts as fuel. Do.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1: Control module 1-1: Relay
2: Accel pedal 3: Buzzer
5; Lamp 6: urea aqueous solution dosing control unit
7: urea aqueous solution tank 8: SCR device
9: engine 10: nitrogen oxide (NOx) sensor 1, 2
11: Self diagnosis module (OBD)

Claims (4)

A forced output limiting and monitoring device for a vehicle,
When the engine rpm is fixed so that the original Limp home mode (RPM fixed mode) is activated, the injection ratio of the urea injected into the urea aqueous solution tank and the urea aqueous solution tank is calculated, And controls the heating of the urea aqueous solution liquid line and the urea aqueous solution tank, and controls the urea aqueous solution dosing control having the function of controlling the exhaust temperature, the amount of urea aqueous solution, the quality of urea aqueous solution, and the nitrogen oxide (NOx) A unit (urea dosing control unit) is connected,
When the exhaust gas is generated in the vehicle by driving the electronic diesel engine of the vehicle, the urea aqueous solution dosing control unit receives signals related to the quantity and quality of urea aqueous solution in the urea aqueous solution tank, NOx) When the NOx signal is received by the sensors 1 and 2, the level is insufficient when the urea aqueous solution is insufficient, and when the quality is not the urea aqueous solution component or when the NOx is out of the reference value In the case of LQRT in which the dosing device is not operating normally, the CPU of the control module receives information via the CAN communication with the urea aqueous solution dosing control unit to operate a warning lamp or buzzer, If a forced output limitation is required because the urea aqueous solution is not filled, the forced memory output is not executed immediately, and the memory is stored in the CPU. Self and the control module has a function to work for forcing the output state that was stored in the memory and if the key on the key back off;
In the case of LQRT by the CPU of the control module, the CPU activates the relay so that the accelerator pedal input is directly input to the ECU by one terminal of the relay, and since the other terminal of the relay is not connected, the ECU does not have an accelerator pedal input An accelerator pedal for operating the Limp home mode;
A self-diagnosis diagnostic module (OBD) installed in a vehicle interior to transmit the sensed amount of urea aqueous solution of the urea aqueous solution tank to the driver through lamp, buzzer operation or voice guidance, which is output limitation information monitoring LQRT; And limits the forced output according to the choice between the amount of urea urea, the quality of the urea urea, the standard value of nitrogen oxides (NOx), tampering of the dosing device, removal of the device, And a controller for controlling the output of the forced output for the running vehicle. delete delete delete

Images