KR101735211B1 - Device and method for testing LP EGR throttle body - Google Patents

Abstract

The present invention relates to an EGR throttle body testing device and a method comprising: an EGR opening sensor (14) to detect a change in magnetic field due to rotation of an EGR valve; an EGR encoder (30) connected to an EGR valve shaft (12) to measure an amount opening the EGR valve; and a throttle encoder (40) connected to a throttle valve shaft (13) to measure an amount of opening of a throttle valve. Accordingly, the amount of opening of the throttle valve is directly measured by the throttle encoder (40) and operation errors of the EGR valve and the throttle valve are accurately determined by comparing values measured by the sensor and the encoders with each other.

Description

Technical Field [0001] The present invention relates to a device and a method for testing an LP EGR throttle body,

The present invention relates to an apparatus and a method for testing an idle throttle body, and more particularly, to an idle throttle body testing apparatus and method for monitoring an idle throttle body operation amount by monitoring an opening amount of the idle throttle valve and a throttle valve, A body testing apparatus and a test method.

One of the methods for reducing the amount of nitrogen oxide contained in the engine exhaust gas of an automobile is exhaust gas recirculation (EGR). EGR (EGR) supplies a part of the exhaust gas to the combustion chamber, thereby suppressing the generation of nitrogen oxides by lowering the combustion temperature of the fuel.

A related art is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0127999 as a prior art.

The amount of outdoor air to be supplied to the engine combustion chamber is controlled by a throttle valve. In recent years, the amount of opening of the throttle valve is controlled electronically according to an operation amount of an accelerator pedal of a driver. (Electronic Throttle Control)

An apparatus for combining two valves (an idle valve and a throttle valve) of the above-described IG system and an electronic throttle valve control system in conjunction with a throttle valve has been developed, which is called an idler throttle body. An exhaust throttle body is provided with an exhaust gas flow path and an intake air flow path. An exhaust valve is provided in the exhaust gas flow path, and a throttle valve is provided in the intake air flow path. Further, a motor is provided as an actuator for driving the easy valve.

Therefore, the easy valve is driven by the motor. On the other hand, the throttle valve is actuated in conjunction with the operation of the idle valve by connecting the throttle valve shaft to the idle solenoid valve shaft and the interlocking mechanism (for example, gears and rotary cam).

On the other hand, the above-mentioned throttle body is provided with a sensor (hall sensor) on the idle valve side. Therefore, the opening amount of the easy-to-open valve during the durability and operation test of the easy throttle body can be measured, but there is no separate measuring means on the throttle valve side, and the opening amount is calculated by the relationship with the easy valve.

 Therefore, there is a problem that the amount of opening of the throttle valve and the normal operation state can not be directly known accurately.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a throttle valve control apparatus and a throttle valve control apparatus, And an object of the present invention is to provide an apparatus and a method for testing an easy throttle body.

According to another aspect of the present invention, there is provided an easy-to-throttle body testing apparatus including an easy-to-operate throttle body having an easy-to-open valve and a throttle valve interlocked with the easy- A motor provided in the throttle body, a chamber capable of hermetically accommodating the idler throttle body with respect to the outer space and capable of controlling the test temperature, an easy-to-open sensor for measuring a change in magnetic field due to the operation of the easy- A throttle encoder for measuring an angle of rotation of the throttle valve shaft in response to the operation of the throttle valve, a throttle encoder for measuring the rotation angle of the idler valve shaft according to the operation of the throttle valve, And an electronic control unit for collecting and analyzing the motor control signal and generating the motor control signal.

The throttle valve shaft of the throttle valve is connected to the input shaft of the throttle encoder via a throttle connection shaft passing through the chamber. The throttle valve shaft of the throttle valve is connected to the input shaft of the throttle encoder via an idle joint shaft passing through the chamber. do.

Both ends of the idle connecting shaft and the throttle connecting shaft are connected to the input shaft of the idle solenoid valve and the input shaft of the throttle valve and the input shaft of the throttle encoder via the coupling, respectively.

The idle valve shaft and the throttle valve shaft are formed so as to protrude to the outside of the idler throttle body.

A heat insulating material is installed in the through hole of the chamber through which the idle valve shaft and the throttle valve shaft pass.

Meanwhile, the method for testing an easy throttle body according to the present invention is a method for testing an easy throttle body provided with an idle valve, a throttle valve interlocked with the idle valve, and a motor for driving the idle valve, A motor control signal sending step (S100) in which an electronic control unit sends out a motor control signal for opening control, and an easy opening degree sensor measures an easy opening degree of the valve when the freezing valve is operated, (S200) for inputting an easy-to-open degree sensor output value to be inputted to the electronic control unit, an easy-to-open degree sensor output value comparing step (S200) for comparing the output value of the easy- In the control target value comparison step (S300), in the comparison step (S300), if the error between the easy opening sensor output value and the target opening amount of the easy valve exceeds the error allowable setting range (S500) for sending out a PID control signal when the error is within the allowable error range in the comparison step (S300) .

Further, the present invention provides a method for controlling an electronic control unit, comprising: an input step (S210) of inputting an output value of an encoder, which outputs an output value of an encoder, The method according to claim 1, further comprising a step (S220) of comparing an output value of an easy-to-open sensor for comparing the output value of the easy encoder and an output value of an easy encoder, wherein in the comparing step (S220) If it is within the error allowable setting range, the step S300 of comparing the idle opening degree sensor output value and the idle valve control target value is performed. If the error exceeds the error allowable setting range, the test stopping and warning step S400 is performed .

Further, the present invention is characterized in that the throttle encoder output value input step (S215) in which the output value of the throttle encoder for measuring the opening amount of the throttle valve is input to the electronic control unit, the throttle opening amount calculation step And a throttle encoder output value comparing step (S230) for comparing the throttle opening amount and the throttle opening output value for comparing the throttle encoder output value. In the comparing step (S230), the throttle opening amount calculated according to the easy- If it is determined that the difference between the measured opening amounts of the throttle valves is within the error allowable setting range, it is determined that the idle valve and the throttle valve are normally operated, and the step S300 of comparing the idle opening sensor output value and the idle valve control target value is performed. Otherwise, it is determined that there is an abnormality in operation of the idle valve or the throttle valve, And it characterized by performing a warning step (S400).

Further, the present invention is characterized in that the step (S230) of comparing the calculated throttle opening amount and the throttle encoder output value is performed after the step (S220) of comparing the output value of the idle opening sensor and the output value of the idle encoder.

The present invention also provides a method of testing an easy-to-throttle body having an idle valve, an idle valve interlocked with a throttle valve and an idle valve driving motor, the method comprising the steps of: (S100 ') for transmitting a signal to the electronic control unit, and when the easy-to-open valve is operated, the easy-to-open degree sensor measures an easy-to-open valve opening amount and outputs an output value of the easy- A throttle encoder output value input step (S200) of inputting an opening degree sensor output value, a throttle encoder output value input step (S215) in which an output value of a throttle encoder for measuring the opening amount of the throttle valve is input to an electronic control unit when the throttle valve is operated, An output throttle opening amount for comparing the throttle opening amount calculated according to the output value with the throttle encoder output value, and a throttle encoder output value In step S230, a test stop and warning step S400 for stopping the test and generating a warning signal if the error exceeds the error allowable setting range in the comparison step S230. In the comparison step S230, And transmitting a PID control signal to the motor when the error is within the allowable setting range (S500).

According to the present invention as described above, an encoder for measuring the rotation angle of the idle valve shaft and the throttle valve shaft is respectively provided.

Therefore, the amount of opening of the throttle valve can be accurately confirmed directly from the throttle encoder output value.

Further, it is possible to know whether the throttle valve operates normally by comparing the throttle encoder output value with the target value.

Also, by comparing the sensor output value with the easy-to-open sensor output value, it is possible to more accurately determine whether the easy operation of the easy valve is normal.

1 is a configuration diagram of an easy-to-throttle body testing apparatus according to the present invention;
2 is a flowchart showing a first embodiment of an easy-to-throttle body test method according to the present invention.
3 is a flowchart showing a second embodiment of an easy-to-throttle body test method according to the present invention.
4 is a flowchart showing a third embodiment of an easy-to-throttle body test method according to the present invention.
5 is a flowchart showing a fourth embodiment of an easy-to-throttle body test method according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The thicknesses of the lines and the sizes of the components shown in the accompanying drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1, an easy-to-throttle body testing apparatus according to the present invention includes an easy-to-throttle body 10, a chamber 20, an easy encoder 30 for detecting an easy valve opening amount, A throttle encoder 40 for detection, and an electronic control unit 50 for collecting and analyzing data and generating a control signal (motor control signal).

The throttle body 10 is provided with an idle valve in a flow passage through which air introduced from an exhaust pipe passes to the engine combustion chamber and a throttle valve is installed in a flow passage through which the outside air sucked from the outside air intake passage passes to the engine combustion chamber . The throttle valve shaft is connected to the idle solenoid valve shaft via a rotary arm, so that the throttle valve is linked to the idle solenoid valve.

The throttle body 10 is provided with a motor 11 for driving an idler valve. The motor 11 is operated and controlled by the electronic control unit 50.

The easy-to-open throttle body 10 is provided with an easy-to-open sensor 14 for measuring the opening amount of the easy valve. The easy-to-open sensor 14 is a hall sensor, which senses a change in magnetic field due to an opening amount of the easy valve and generates a voltage signal proportional thereto. The detection signal of the easy-to-open sensor 14 is transmitted to the electronic control unit 50, and the electronic control unit 50 calculates the opening amount of the easy valve based on the detection signal.

The chamber 20 closes the airtight throttle body 10 to the outside so that a desired test temperature (-40 ° C. to 140 ° C.) can be realized in the endurance test of the easy throttle body 10. A door is provided to allow the easy-to-throttle body 10 to be inserted and removed, and a fixing jig for fixing the easy-to-throttle body 10 therein is provided. In addition, a heating device and a cooling device are provided to implement the test temperature, and a control unit for controlling them is provided.

The idle encoder 30 is an encoder for detecting the idle valve opening amount, and the throttle encoder 40 is an encoder for detecting the throttle opening amount. The encoder 30 and the throttle encoder 40 are installed outside the chamber 20 so as not to be affected by a severe test temperature.

In order to allow the easy encoder 30 and the throttle encoder 40 to detect the opening amounts of the idle valve and the throttle valve respectively, the idle encoder 30 and the throttle encoder 40 are connected to the idler valve shaft 12 And the throttle valve shaft 13, respectively. For this purpose, the idle solenoid valve shaft 12 and the throttle valve shaft 13 are formed to extend outward from the outer throttle body 10.

The throttle encoder 40 is connected to the throttle valve shaft 13 via the throttle connection shaft 70. The throttle encoder 40 is connected to the throttle valve shaft 12 via the idle joint shaft 60, .

The idle connecting shaft 60 and the throttle connecting shaft 70 are installed through the chamber 20 and have couplings 61, 62, 71 and 72 at both ends thereof. That is, the inner end of the chamber 20 of the easy link shaft 60 is connected to the idler valve shaft 12 by a coupling 61 and the outer end of the chamber 20 is connected to an encoder 30, respectively. The inner end of the chamber 20 of the throttle connecting shaft 70 is connected to the throttle valve shaft 13 by the coupling 71 and the outer end of the chamber 20 is connected to the input shaft 13 of the throttle encoder 40 by the coupling 72. [ (41).

The coupling (61, 62, 71, 72) is mechanically connected directly to the shaft on both sides thereof, so that both side portions of the coupling (61, 62, 71, 72) are integrally rotated .

The rotary encoder 30 and the throttle encoder 40 are rotary encoders which convert the rotation angles of the input shafts 31 and 41 into digital signals and transmit them to the electronic control unit 50.

The rotation of the idler valve shaft 12 is transmitted to the input shaft 31 of the remote encoder 30 through the idler connecting shaft 60 as it is, So that the easy encoder 30 can measure the opening amount of the easy valve.

The rotation of the throttle valve shaft 13 is directly transmitted to the input shaft 41 of the throttle encoder 40 through the throttle connecting shaft 70 and therefore the throttle encoder 13 40 can measure the opening amount of the throttle valve.

Therefore, the electronic control unit 50 can determine the idle valve opening amount and the throttle valve opening amount from the output value of the easy encoder 30 and the output value of the throttle encoder 40, respectively.

Insulation members 80 and 81 are formed in the through holes of the chamber 20 through which the easy axis connecting shaft 60 and the throttle connecting shaft 70 penetrate so that heat transfer between the inner space and the outer space of the chamber 20 is not generated. Respectively.

The electronic control unit 50 receives a target value (target opening amount) of the valve opening amount (opening amount of the throttle valve) through a separate input means (not shown) Can be operated.

The electronic control unit 50 can calculate the easy valve opening amount from the output signal of the easy running distance sensor 14 and can determine the easy valve opening amount from the output value of the easy rotation encoder 30, The throttle opening amount can be known from the output value of the throttle encoder 40. [

The electronic control unit 50 collects and analyzes the data input from the idle opening sensor 14, the image encoder 30, the throttle encoder 40, and the like, and controls the motor 11.

The electronic control unit 50 measures the amount of data collected through output means (not shown) such as a monitor, that is, the amount of the easy valve measured through the easy running distance sensor 14, And the opening amount of the throttle valve measured through the throttle encoder 40 can be displayed so that the examiner can see the amount of opening of the throttle valve.

Therefore, the test host can clearly see whether the output valve of the throttle valve and the throttle valve are open or the abnormality of the operation of the throttle valve or the throttle valve has occurred, according to the target value for which the output data indicated on the output means is intended.

Now, an easy-to-throttle body test method using the above-described easy throttle body testing apparatus will be described.

FIG. 2 is a first embodiment of a method for testing an easy throttle body according to the present invention. The motor control signal transmitting step S100 (FIG. 2) for sending an electronic control unit 50 a control signal for easy valve opening control , The EZL opening sensor 14 measures the opening amount of the EZAl valve and outputs a measurement signal to the electronic control unit 50 (S200) for inputting an output value of an easy-to-open sensor to the electronic control unit 50 by transmitting the output value of the easy-to-open sensor 14 to the electronic control unit 50, (S300) of comparing the target opening amount (= target value) of the idle valve to be implemented with the control of the controller (S300), comparing the output value with the target value Error value error tolerance Setting range (2% of target value) A test stop and warning step S400 for stopping the test and generating a warning signal if the error is within the tolerance setting range in the comparing step S300; and a PID control signal transmitting step S500 for sending out the PID control signal ).

The target opening amount of the easy valve may be input to the electronic control unit 50 by a tester through an input means provided separately or may be generated by a program previously input into the electronic control unit 50. [ The electronic control unit 50 sends the motor control signal to open the idle valve according to the target value to operate the motor 11. (S100)

When the motor 11 is operated and the easy valve is operated, the easy opening sensor 14 transmits a detection signal (= measurement signal) to the electronic control unit 50. The electronic control unit 50 calculates an easy valve opening amount based on the sensing signal. (S200) Hereinafter, the calculated easy valve opening amount is referred to as an easy opening degree sensor output value.

The electronic control unit 50 compares the target opening amount (target value) of the easy valve with the actual measured value (= the easy opening degree sensor output value) inputted from the easy running distance sensor 14 (S300) If the error is within the allowable setting range (2%), the PID control signal is transmitted (S500) to control the operation of the motor 11 so that the target valve can quickly implement the target opening amount, It is determined that the lower limit valve is not opened normally (as desired), and the test is stopped and a warning signal is generated (S400)

The warning signal may be generated by a method such as generating a warning sound or flashing a warning light.

PID (Proportional Integral Differential) control is a proportional integral derivative control that is widely used for motor control as a control method for reducing the residual deviation of the control result value and improving the responsiveness so as to converge to the target value more quickly.

The error allowable setting range is within 2% of the target value as described above. The error exceeding 2% means that the idle valve has not been normally driven by the motor control signal and thus an excessive error has occurred. Even if the PID control is repeatedly performed, it is ensured that the idle valve opening amount converges to the target value It means that you can not. Therefore, if the error exceeds 2%, it is judged as an idle valve operation error, the test is stopped and an alarm signal is generated.

According to the above method, the output value of the easy-to-open degree sensor 14 can be compared with the target value of the easy valve opening amount to quickly determine the error of the easy to operate valve, that is, the error of the easy throttle body 10 .

3, the second embodiment of the method for testing an easy throttle body according to the present invention is characterized in that in the test method shown in Fig. 2, an easy encoder 30 for measuring the opening amount of the easy valve, And the electronic control unit 50 outputs the output value of the easy-to-open sensor 14 and the output value of the easy-to-understand encoder 30 to the electronic control unit 50, (S220). ≪ RTI ID = 0.0 >

In the comparison step S220, if the error between the easy valve opening amount calculated based on the output value of the easy roll opening sensor 14 and the easy roll opening amount measured by the easy rotation encoder 30 is within the tolerance setting range 2 (Step S300) of comparing the measured value of the open-circuiting sensor with the measured value of the open-circuit voltage of the ignition coil 30, If the range is exceeded, the test suspension and warning step (S400) is performed.

According to the second embodiment, the step of comparing the output value of the easy run distance sensor 14 and the output value of the easy encoder 30 before the easy run valve sensor output value and the easy valve control target value comparison step S300 The reliability of the output value of the easy running distance sensor 14 can be checked first. That is, when the error value is compared with the output value of the easy encoder 30, if the error value is within the allowable error range (the difference between the two values is within 2% of the absolute encoder output value) 14) It is determined that the measured value of the output value is reliable, and then the process proceeds to step S300. Otherwise, the test is stopped and the warning signal is generated (S400).

Therefore, the operation error judgment of the easy valve performed in the step S300 of comparing the output value of the easy roll opening sensor 14 with the target value can be made more accurately.

Further, the output value of the easy-to-open degree sensor 14 is compared with the output value of the easy-to-use encoder 30, and the error exceeds the error allowable setting range. This means that it is determined that an abnormality has occurred in the operation of the easy throttle body 10 The operation error of the throttle body 10 can be quickly determined only by performing this step S220.

3 shows a third embodiment of the method for testing an easy throttle body according to the present invention. In the embodiment shown in Fig. 3, the output value of the throttle encoder 40, which measures the amount of opening of the throttle valve, A throttle encoder output value input step S215 for inputting the throttle encoder output value to the control unit 50 and a throttle valve opening amount comparison step for comparing the throttle opening amount calculated according to the output value of the easy running opening sensor 14 and the throttle encoder output value And a throttle encoder output value comparison step (S230).

That is, the throttle opening amount calculated indirectly from the output value of the easy openness sensor 14 and the throttle opening amount measured directly from the throttle encoder 40 are compared with each other.

If the difference between the throttle opening amount calculated according to the output value of the easy opening amount sensor 14 and the throttle opening amount measured by the throttle encoder 40 in the comparison step S230 is within the error tolerable setting range 2% At this time, the throttle valve opening amount measured by the throttle encoder 40 becomes the reference value of the error determination), and it is determined that the throttle valve and the throttle valve interlocked therewith are normally operated, and then the step S300 is performed. Otherwise, And the operation of the throttle valve is determined to be abnormal, the test is stopped and a warning signal is generated (S400)

The step S230 of comparing the throttle opening amount calculated according to the output value of the easy run distance sensor 14 and the throttle opening amount measured by the throttle encoder 40 is a step S230 of comparing the output value of the easy run distance sensor 14 and the output value of the non- (S220) of comparing the output values of the first and second light emitting diodes (30). This is because the reliability of the comparison result can be improved only if the reliability of the output value of the easy opening sensor 14 can be recognized in the step S230.

According to the third embodiment, even when the throttle opening amount calculated based on the output value of the easy run distance sensor 14 is compared with the throttle opening amount measured by the throttle encoder 40, the operation error of the throttle body 10 So that it is possible to more accurately determine the operation error of the easy throttle body 10.

Meanwhile, FIG. 5 is a fourth embodiment of the method for testing an easy throttle body according to the present invention, and is a test method which can be used in controlling the throttle opening amount. The fourth embodiment according to the present invention is characterized in that the motor control signal sending step S100 'for operating the motor 11 to open the opening amount of the throttle valve to the target value, the motor 11 is operated, An operation output value inputting step (S200) of inputting an output value of the idle opening sensor 14 to the electronic control unit 50 when the idle opening degree sensor 14 is operated, an output value of the throttle encoder 40 when the throttle valve is operated in conjunction with the idle valve A throttle encoder output value inputting step (step S215) of inputting the throttle encoder output value to the electronic control unit 50, a throttle valve opening amount computed according to the output value of the easy running opening sensor 14, The throttle encoder output value comparing step S230 compares the calculated throttle opening amount with the calculated throttle opening amount and compares the measured throttle opening amount with the throttle encoder output value in step S230. The measured value is used as the A test stop and warning step S400 for stopping the test and generating a warning signal if the error is within the tolerance setting range (2%) in the comparison step S230, (S500) of sending a PID control signal to the base station (11).

That is, the difference between the throttle opening amount calculated from the output value of the easy opening degree sensor 14 and the throttle opening amount measured by the throttle encoder 40 is 2% of the throttle opening amount measured by the throttle encoder 40, It is determined that the operation of the idle throttle body 10 such as the idle valve, the throttle valve and the interlocking mechanism between them is normally performed (S230), and the PID control signal is transmitted (S500) to determine the throttle opening amount as the target value And if it is determined that the operation of the easy throttle body 10 is abnormal, the test is stopped and a warning signal is generated (S400).

According to the fourth embodiment, only the step of comparing the amount of opening of the throttle valve calculated from the output value of the easy opening degree sensor 14 with the amount of opening of the throttle valve measured by the throttle encoder 40 is performed more simply, It is possible to perform an opening control test of the throttle valve by a simple method without including other unnecessary steps.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

10: Easy throttle body 11: Motor
12: Easy valve shaft 13: Throttle valve shaft
14: Easy-to-open sensor 20: Chamber
30: Easy encoder 31: Input shaft
40: throttle encoder 41: input shaft
50: Electronic control unit 60: Easy connection axis
70: Throttle connecting shaft 61, 62, 71, 72: Coupling
80,81: Insulation

Claims (10)

delete delete delete delete delete delete An idle throttle body provided with an idle valve and a throttle valve interlocked with the idle valve,
A motor installed on the easy throttle body for operating the easy valve,
A chamber in which the above-mentioned throttle body is hermetically sealed with respect to the external space and the test temperature can be adjusted,
An easy-to-open sensor for measuring a change in magnetic field due to the operation of the idle valve,
An inertial encoder for measuring an angle of rotation of the idle valve shaft according to the operation of the idle valve,
A throttle encoder for measuring a rotation angle of the throttle valve shaft in accordance with the operation of the throttle valve,
A method of testing an easy-to-throttle body using an easy-to-throttle body tester comprising an electronic control unit for collecting and analyzing measurement data of the easy running sensor, the easy encoder and the throttle encoder and generating the motor control signal,
A motor control signal sending step (S100) in which the electronic control unit sends out a motor control signal for controlling the idle valve opening degree;
(S200) of inputting an output value of an easy-to-open degree sensor to the electronic control unit by measuring an easy-to-open valve opening amount of the easy-to-open degree sensor when the easy to open valve is operated,
(S300) for comparing an output value of an easy-to-open sensor for comparing an output value of the easy-open sensor and a target opening amount of the easy valve with the electronic control unit,
A test stop and warning step (S400) for stopping the test and generating a warning signal if the error between the easy openness sensor output value and the target opening amount of the easy valve exceeds the error allowable setting range in the comparison step (S300)
And a PID control signal sending step (S500) for sending out a PID control signal when the error is within an error allowable setting range in the comparing step (S300), the method comprising:
(S210) for inputting an output value of an easy encoder for measuring the opening amount of the easy valve to the electronic control unit,
The electronic control unit may further include an easy-to-open sensor output value comparing step (S220) for comparing the output value of the easy run distance sensor and the output value of the easy run sensor,
If it is determined in step S220 that the error between the output value of the easy openness sensor and the output value of the encoder is within the error tolerance setting range, the step S300 of comparing the ideal output value and the target valve control target value, And the test stop and warning step (S400) is performed if the error exceeds the error allowable setting range. The method of claim 7,
A throttle encoder output value input step (S215) in which an output value of a throttle encoder for measuring an opening amount of the throttle valve is input to an electronic control unit,
Further comprising a step (S230) of comparing an output throttle opening amount and throttle encoder output value comparing the throttle opening amount calculated according to the idle opening degree sensor output value with the throttle encoder output value,
If the difference between the throttle opening amount calculated based on the easy opening sensor output value and the throttle opening amount measured by the throttle encoder in the comparison step S230 is within the error tolerance setting range, the easy valve and the throttle valve operate normally (S300). If it is determined that there is an abnormality in the operation of the idle valve or the throttle valve, the test stop and warning step (S400) Of the throttle body. The method of claim 8,
Wherein the step of comparing the calculated throttle opening amount with the throttle encoder output value (S230) is performed after the step (S220) of comparing the output value of the idle opening sensor with the value of the idle encoder output value. delete

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