Self-adaptive fault simulator for engine throttle valve

Abstract

The utility model discloses a self-adaptive fault simulator for an engine throttle valve. Comprising a fuse F1, a diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first potentiometer R7, a second potentiometer R8, a microcontroller MCU, a first MOS tube Q1, a second MOS tube Q2, a first socket J1, a second socket J2, a third socket J3 and a fourth socket J4. A fifth socket J5 and a sixth socket J6. Compared with the prior art, software threshold adjustment and a special fault throttle valve are abandoned, the simulator is adopted to be connected with the ECM and the throttle valve signal line in series, the voltage / time deviation value is set through the potentiometer, an original throttle valve position signal is overlaid in real time and then input into the ECM, and throttle valve self-adaptive deviation signals are controlled according to needs.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile detection simulation equipment, concretely relates to an engine throttle self -adaptation fault simulator. BACKGROUND

[0002] When PVE verification is done according to the national six emission standard regulations in the late research and development stage and after vehicle mass production, the throttle self -adaptation deviation fault verification needs to be done, and the purpose of verification test is to verify whether the vehicle engine control module ECM can monitor the fault and report relevant fault codes when the throttle self -adaptation deviation fault occurs.The traditional fault simulation method has two methods, method one is to use software method to adjust the threshold of throttle self -adaptation deviation fault in the calibration stage, i.e. the throttle self -adaptation deviation is normal, because the fault threshold is adjusted, the fault is reported, and when the actual throttle self -adaptation deviation is abnormal, the vehicle engine control module ECM can monitor the fault and report relevant fault codes.But the software method of adjusting the fault threshold can not simulate the actual fault condition, and is only suitable for the research and development stage.When PVE verification is done according to the national six emission standard in the vehicle mass production stage, the traditional software method of adjusting the fault threshold to simulate the fault is prohibited.Method two is to manufacture the throttle with self -adaptation deviation fault, and the fault throttle is installed on the engine to simulate the fault.But this method needs to manufacture many fault throttles for different brands, different models and different deviation amounts, and when the fault needs to be simulated, the fault throttle with different deviation levels needs to be repeatedly disassembled and assembled, and this method has the defects of high manufacturing cost, large operation difficulty and long test period.

[0003] In summary, the main problems of the traditional method are:

[0004] 1. When the software method tests the simulated fault, the actual throttle self -adaptation deviation is within the normal range, and the throttle self -adaptation deviation received by the vehicle engine control module ECM is also normal.

[0005] 2. The engine does not actually have a fault, but the fault is reported when the fault threshold is adjusted below the normal range, and the software method cannot simulate the actual throttle self -adaptation deviation fault condition, and is only suitable for the research and development stage.

[0006] 3. The national six emission standard regulations prohibit the use of software method to adjust the fault threshold when PVE verification is done in the vehicle mass production stage.

[0007] 4. If the throttle with self -adaptation deviation fault is used to simulate the fault, the manufacturing cost is high, the operation difficulty is large, and the test period is long.

[0008] In order to solve the above problems, we have made a series of improvements. UTILITY MODEL CONTENTS

[0009] The utility model discloses a self -adaptation fault simulator of engine throttle, to overcome the above -mentioned shortcoming and the insufficient of prior art.

[0010] An engine throttle self-adaptive fault simulator, comprising: a fuse F1, a diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first potentiometer R7, a second potentiometer R8, a microcontroller MCU, a first MOS tube Q1, a second MOS tube Q2, a first socket J1, a second socket J2, a third socket J3, a fourth socket J4, a fifth socket J5 and a sixth socket J6, one end of the fuse F1 is connected with the first socket J1, the other end of the fuse F1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with one end of the fixed end of the first potentiometer R7 and the second potentiometer R8, the positive electrode of the microcontroller MCU, the drain of the first MOS tube Q1 and the second MOS tube Q2, the movable end of the first potentiometer R7 is connected with the voltage deviation setting input end of the microcontroller MCU, the movable end of the second potentiometer R8 is connected with the time deviation setting input end of the microcontroller MCU, one end of the first resistor R1 and the second resistor R2 is connected with the gate of the first MOS tube Q1, the other end of the second resistor R2 is connected with the first control stage of the microcontroller MCU, one end of the third resistor R3 and the fourth resistor R4 is connected with the gate of the second MOS tube Q2, the other end of the fourth resistor R4 is connected with the second control stage of the microcontroller MCU, one end of the fifth resistor R5, the source of the first MOS tube Q1 and one end of the third capacitor C3 are connected with the fourth socket J4, one end of the sixth resistor R6, the source of the second MOS tube Q2 and one end of the fourth capacitor C4 are connected with the sixth socket J6, one end of the first capacitor C1, the first signal analysis input end of the microcontroller MCU and the second socket J2 are connected, one end of the second capacitor C2, the second signal analysis input end of the microcontroller MCU and the third socket J3 are connected, the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the fixed end of the first potentiometer R7 and the second potentiometer R8, the other end of the first resistor R1, the other end of the third resistor R3, the other end of the fifth resistor R5, the other end of the sixth resistor R6, the negative electrode of the microcontroller MCU and the fifth socket J5 are connected with the ground, the jack of the first socket J1 is connected with the 5V power supply of the vehicle engine control module ECM, the jacks of the second socket J2 and the third socket J3 are connected with the throttle end of the throttle position signal 1 and 2 respectively, the jacks of the fourth socket J4 and the sixth socket J6 are connected with the engine control module ECM end of the throttle position signal 1 and 2 respectively, the jack of the fifth socket J5 is connected with the negative electrode of the vehicle power supply.

[0011] The engine throttle self-adaptive fault simulator has the advantages that:

[0012] Compared with the prior art, the utility model discloses abandoning software threshold value and specially-made fault throttle valve, adopting simulator series connection ECM and throttle valve signal line, through potentiometer setting voltage / time deviation, real-time superposition to original throttle valve position signal after input ECM, realizes throttle valve self-adapting deviation signal according to demand control. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is structure schematic diagram of the utility model.

[0014] Reference signs:

[0015] Fuse F1100, diode D1200, first capacitor C1300, second capacitor C2400, third capacitor C3500, fourth capacitor C4600, first resistor R1700, second resistor R2800, third resistor R3900, fourth resistor R41000, fifth resistor R51100, sixth resistor R61200, first potentiometer R71300, second potentiometer R81400, microcontroller MCU 1500, first MOS tube Q11600, second MOS tube Q21700, first socket J11800, second socket J21900, third socket J32000, fourth socket J42100, fifth socket J52200 and sixth socket J62300. DETAILED DESCRIPTION

[0016] The utility model will be further described below in connection with specific embodiments. It should be understood that the following embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model.

[0017] Embodiment 1

[0018] Figure 1 It is structure schematic diagram of the utility model.

[0019] As Figure 1As shown, an engine throttle self-adaptive fault simulator includes: a fuse F1100, a diode D1200, a first capacitor C1300, a second capacitor C2400, a third capacitor C3500, a fourth capacitor C4600, a first resistor R1700, a second resistor R2800, a third resistor R3900, a fourth resistor R41000, a fifth resistor R51100, a sixth resistor R61200, a first potentiometer R71300, a second potentiometer R81400, a microcontroller MCU 1500, a first MOS tube Q11600, a second MOS tube Q21700, a first socket J11800, a second socket J21900, a third socket J32000, a fourth socket J42100, a fifth socket J52200, and a sixth socket J62300, the first socket J11800 is connected with one end of the fuse F1100, the other end of the fuse F1100 is connected with the anode of the diode D1200, the cathode of the diode D1200 is connected with one end of the fixed end of the first potentiometer R71300 and the second potentiometer R81400, the positive electrode of the microcontroller MCU 1500, the drain of the first MOS tube Q11600 and the second MOS tube Q21700, the movable end of the first potentiometer R71300 is connected with the voltage deviation setting input end of the microcontroller MCU 1500, the movable end of the second potentiometer R81400 is connected with the time deviation setting input end of the microcontroller MCU 1500, one end of the first resistor R1700 and the second resistor R2800 is connected with the gate of the first MOS tube Q11600, the other end of the second resistor R2800 is connected with the first control level of the microcontroller MCU 1500, one end of the third resistor R3900 and the fourth resistor R41000 is connected with the gate of the second MOS tube Q21700, the other end of the fourth resistor R41000 is connected with the second control level of the microcontroller MCU 1500, one end of the fifth resistor R51100, the source of the first MOS tube Q11600, one end of the third capacitor C3500 is connected with the fourth socket J42100, one end of the sixth resistor R61200, the source of the second MOS tube Q21700, one end of the fourth capacitor C4600 is connected with the sixth socket J62300, one end of the first capacitor C1300, the first signal analysis input end of the microcontroller MCU 1500 is connected with the second socket J21900, one end of the second capacitor C2400, the second signal analysis input end of the microcontroller MCU 1500 is connected with the third socket J32000,The other end of the first capacitor C1300, the other end of the second capacitor C2400, the other end of the third capacitor C3500, the other end of the fourth capacitor C4600, the fixed end of the other end of the first and second potentiometers R71300 and R81400, the other end of the first resistor R1700, the other end of the third resistor R3900, the other end of the fifth resistor R51100, the other end of the sixth resistor R61200, the negative pole of the microcontroller MCU 1500, the fifth socket J52200 is connected with the ground, the jack of the first socket J11800 is connected with the 5V power supply of the vehicle engine control module ECM, the jacks of the second and third sockets J21900 and J32000 are respectively connected with the throttle end of the throttle position signal 1 and 2, the jacks of the fourth and sixth sockets J42100 and J62300 are respectively connected with the engine control module ECM end of the throttle position signal 1 and 2, and the jack of the fifth socket J52200 is connected with the negative pole of the vehicle power supply.

[0020] The utility model discloses a principle is: the 5V power supply of vehicle engine control module ECM passes through first socket J11800, fuse F1100, diode D1200 and gives the whole circuit power supply. The negative pole of vehicle power supply passes through the fifth socket J52200 and provides negative pole loop for the whole simulator. Fuse F1100 provides overcurrent protection for 5V circuit, and diode D1200 provides reverse connection protection for 5V circuit. First capacitor C1300, second capacitor C2400, third capacitor C3500 and fourth capacitor C4600 are used for absorbing interference signal. Fifth resistor R51100, sixth resistor R61200 respectively pull down the source of first MOS tube Q11600 and second MOS tube Q21700 to 0V when being in the cut-off state. Microcontroller MCU 1500 utilizes first resistor R1700 and second resistor R2800, third resistor R3900 and fourth resistor R41000 to control the gate of first MOS tube Q11600 and second MOS tube Q21700 at suitable voltage respectively. When simulating the fault, rotates first potentiometer R71300, and the 0-5V voltage of its movable end output is provided as the voltage deviation demand signal of throttle position signal to microcontroller MCU 1500. Rotates second potentiometer R81400, and the 0-5V voltage of its movable end output is provided as the time deviation demand signal of throttle position signal to microcontroller MCU 1500. The original position signal 1 and 2 of throttle are inputted and provided to microcontroller MCU 1500 through second socket J21900 and third socket J32000 respectively. Microcontroller MCU 1500 carries out voltage and time deviation adjustment to original throttle signal according to the setting of first potentiometer R71300 and second potentiometer R81400, and the signal after deviation adjustment is connected to fourth socket J42100 and sixth socket J62300 after being amplified through first MOS tube Q11600 and second MOS tube Q21700, and fourth socket J42100 and sixth socket J62300 output the position signal with deviation to engine control module ECM. Adjusts first potentiometer R71300 and second potentiometer R81400, when the deviation setting exceeds the fault threshold value, and vehicle engine control module ECM monitors the fault and reports relevant fault code.

[0021] In summary, the present application is a fault simulator for throttle self-adaptive deviation, which is composed of common electronic components, and can control the throttle self-adaptive deviation signal by hardware method, and can adjust the throttle self-adaptive deviation according to the severity of the fault, and can meet the PVE fault verification requirements of the latest emission regulations. Compared with the prior art, the present application does not use software method to modify the fault threshold, nor does it use a specially designed throttle with throttle self-adaptive deviation fault, but by inputting the normal throttle position signal with a certain amount of deviation to the engine control module ECM, the throttle self-adaptive deviation signal is controlled as needed. It has the advantages of low manufacturing cost and simple operation. When the fault needs to be simulated, the position signal line connecting the vehicle engine control module ECM and the throttle is disconnected, the simulator is connected in series in the disconnected signal line, the required voltage and time deviation are set by the potentiometer, the simulator analyzes the original throttle self-adaptive signal, and inputs the set deviation to the engine control module ECM based on the original throttle self-adaptive signal, and finally the engine control module ECM receives the throttle self-adaptive deviation fault signal.

[0022] The specific embodiments of the present application are described above, but the present application is not limited thereto, and various changes can be made without departing from the spirit of the present application.

Claims

1. An engine throttle self-adapting fault simulator, characterized in that, Comprising: The fuse F1 (100), the diode D1 (200), the first capacitor C1 (300), the second capacitor C2 (400), the third capacitor C3 (500), the fourth capacitor C4 (600), the first resistor R1 (700), the second resistor R2 (800), the third resistor R3 (900), the fourth resistor R4 (1000), the fifth resistor R5 (1100), the sixth resistor R6 (1200), the first potentiometer R7 (1300), the second potentiometer R8 (1400), the microcontroller MCU (1500), the first MOS tube Q1 (1600), the second MOS tube Q2 (1700), the first socket J1 (1800), the second socket J2 (1900), the third socket J3 (2000), the fourth socket J4 (2100), the fifth socket J5 (2200) and the sixth socket J6 (2300), one end of the first socket J1 (1800) is connected with the fuse F1 (100), the other end of the fuse F1 (100) is connected with the anode of the diode D1 (200), the cathode of the diode D1 (200) is connected with one end of the fixed end of the first potentiometer R7 (1300) and the second potentiometer R8 (1400), the positive electrode of the microcontroller MCU (1500), the drain of the first MOS tube Q1 (1600) and the second MOS tube Q2 (1700), the active end of the first potentiometer R7 (1300) is connected with the voltage deviation setting input end of the microcontroller MCU (1500), the active end of the second potentiometer R8 (1400) is connected with the time deviation setting input end of the microcontroller MCU (1500), one end of the first resistor R1 (700) and the second resistor R2 (800) is connected with the gate of the first MOS tube Q1 (1600), the other end of the second resistor R2 (800) is connected with the first control stage of the microcontroller MCU (1500), one end of the third resistor R3 (900) and the fourth resistor R4 (1000) is connected with the gate of the second MOS tube Q2 (1700), the other end of the fourth resistor R4 (1000) is connected with the second control stage of the microcontroller MCU (1500), one end of the fifth resistor R5 (1100), the source of the first MOS tube Q1 (1600) and one end of the third capacitor C3 (500) is connected with the fourth socket J4 (2100), one end of the sixth resistor R6 (1200), the source of the second MOS tube Q2 (1700) and one end of the fourth capacitor C4 (600) is connected with the sixth socket J6 (2300), one end of the first capacitor C1 (300), the first signal analysis input end of the microcontroller MCU (1500) is connected with the second socket J2 (1900), one end of the second capacitor C2 (400), the second signal analysis input end of the microcontroller MCU (1500) is connected with the third socket J3 (2000),The other end of the first capacitor C1 (300), the other end of the second capacitor C2 (400), the other end of the third capacitor C3 (500), the other end of the fourth capacitor C4 (600), the fixed end of the other end of the first potentiometer R7 (1300) and the second potentiometer R8 (1400), the other end of the first resistor R1 (700), the other end of the third resistor R3 (900), the other end of the fifth resistor R5 (1100), the other end of the sixth resistor R6 (1200), the negative electrode of the microcontroller MCU (1500), the fifth socket J5 (2200) is connected with ground, the jack of the first socket J1 (1800) is connected with the 5V power supply of the vehicle engine control module ECM, the jacks of the second socket J2 (1900) and the third socket J3 (2000) are respectively connected with the throttle end of the throttle position signal 1 and 2, the jacks of the fourth socket J4 (2100) and the sixth socket J6 (2300) are respectively connected with the engine control module ECM end of the throttle position signal 1 and 2, and the jack of the fifth socket J5 (2200) is connected with the negative electrode of the vehicle power supply.

Images