Testing and analyzing device for throttle valve and turbocharger of engine

Abstract

The invention discloses a test analysis device for an engine throttle valve and a turbocharger, and the device comprises an oscilloscope and a first measurement box, and the oscilloscope is used for displaying collected signals; the first measuring box comprises a first interface, a second interface and a third interface, a first end of the first interface is used for connecting an engine control unit, a second end of the first interface is used for connecting a first end of the third interface, a second end of the third interface is used for connecting an oscilloscope, and a first end of the second interface is used for connecting a first end of the third interface; the second end of the second interface is used for connecting to-be-tested equipment, the first interface comprises a plurality of terminals, the second interface comprises a plurality of terminals, the third interface comprises a plurality of terminals, the number of the terminals of the first interface, the number of the terminals of the second interface and the number of the terminals of the third interface are the same, and the plurality of terminals of the first interface are connected with the plurality of terminals of the third interface in a one-to-one correspondence manner; the plurality of terminals of the second interface are connected with the plurality of terminals of the third interface in a one-to-one correspondence manner.

Description

Technical Field

[0001] The invention relates to the technical field of measuring and analyzing voltage signals and position signals of an engine throttle and a turbocharger, and in particular to a testing and analyzing device for an engine throttle and a turbocharger. Background Art

[0002] During the analysis of electrical faults of the throttle body and turbocharger, when an oscilloscope was used to measure the waveforms of the drive signal and position signal, there was no available connection equipment for accurate measurement, so the analysis could not be carried out efficiently and accurately, and the faults of the returned parts could not be reproduced in the manufacturer's analysis.

[0003] In the prior art, the wire is broken to measure by using a clamp or a probe tool. However, wire-breaking measurement can lead to poor contact and unstable measurement signals; the live parts are exposed and prone to short circuits; and it is difficult to fix the vehicle while it is running. The original vehicle wiring harness is damaged, increasing the risk of failure or the number of parts to be replaced, leading to an increase in maintenance costs. Summary of the invention

[0004] To solve at least one aspect of the above problems, the present invention provides a testing and analyzing device for an engine throttle and a turbocharger, comprising: an oscilloscope, the oscilloscope being used to display collected signals; a first measuring box, the first measuring box comprising a first interface, a second interface and a third interface, the first end of the first interface being used to connect to an engine control unit, the second end of the first interface being used to connect to a first end of the third interface, the second end of the third interface being used to connect to the oscilloscope, the first end of the second interface being used to connect to a first end of the three interfaces, the second end of the second interface being used to connect to a device to be tested, the first interface comprising a plurality of terminals, the second interface comprising a plurality of terminals, the third interface comprising a plurality of terminals, the first interface, the second interface and the third interface having the same number of terminals, the plurality of terminals of the first interface being connected to the plurality of terminals of the third interface in a one-to-one correspondence, and the plurality of terminals of the second interface being connected to the plurality of terminals of the third interface in a one-to-one correspondence.

[0005] Preferably, the second interface includes a position sensor connection terminal and a motor connection terminal.

[0006] Preferably, it also includes a second measuring box, which includes a fourth interface and a fifth interface, the first end of the fourth interface is connected in series between the motor connection terminal and the motor of the device under test, the second end of the fourth interface is connected to a resistor, the first end of the fifth interface is connected to both ends of the resistor, and the second end of the fifth interface is used to connect the oscilloscope.

[0007] Preferably, the first measuring box also includes a first shell, a first opening is formed on the first side wall of the first shell, the first interface is fixedly arranged at the first opening, a second opening is formed on the second side wall of the first shell, the second interface is fixedly arranged at the second opening, and a plurality of through holes for fixing the third interface are formed on the third side wall of the first shell, and the plurality of through holes correspond one-to-one to the plurality of terminals of the third interface.

[0008] Preferably, the first side wall and the second side wall are respectively arranged at two ends of the first shell.

[0009] Preferably, the first measuring box further comprises a fixing member, the fixing member is arranged on the outer side of the first side wall, and the fixing member is used for fixing the first housing and the motor of the device to be tested.

[0010] Preferably, the second measuring box further comprises a second shell, the second shell is provided with a fourth opening for setting the fourth interface, the second shell is provided with a through hole for fixing the fifth interface, and the resistor is arranged in the second shell.

[0011] Preferably, the fourth opening and the through hole are respectively arranged at two ends of the second shell.

[0012] Preferably, the number of the position sensor terminals is three.

[0013] Preferably, the number of the position sensor terminals is four.

[0014] The test and analysis device for an engine throttle and a turbocharger of the present invention has the following beneficial effects: a quick connection can be achieved through the interface of the first measuring box and the second measuring box without damaging the original vehicle wiring harness and electrical parts, an oscilloscope is used to obtain the motor drive signal and position signal of the device to be tested, the required voltage signal is stably measured in the dynamic working state of the engine, and the waveform, period and driving current of the voltage are analyzed by the oscilloscope to determine the cause of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0016] Figure 1 A schematic diagram showing an application scenario of a test and analysis device for an engine throttle and a turbocharger according to an embodiment of the present invention is shown;

[0017] Figure 2 A schematic diagram of another application scenario of the test and analysis device for an engine throttle and a turbocharger according to an embodiment of the present invention is shown.

[0018] Reference numerals:

[0019] 1. Oscilloscope; 2. Throttle unit measuring box; 3. Engine control unit; 4. Throttle unit; 5. Turbocharger; 6. Turbocharger measuring box; 7. Current measuring box. DETAILED DESCRIPTION

[0020] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0021] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0022] In order to at least partially solve the above-mentioned problems and one or more of other potential problems, an embodiment of the present disclosure proposes a test and analysis device for an engine throttle and a turbocharger, comprising: an oscilloscope 1, the oscilloscope 1 is used to display the collected signal; a first measuring box, the first measuring box includes a first interface, a second interface and a third interface, the first end of the first interface is used to connect to the engine control unit 3, the second end of the first interface is used to connect to the first end of the third interface, the second end of the third interface is used to connect to the oscilloscope 1, the first end of the second interface is used to connect to the first ends of the three interfaces, and the second end of the second interface is used to connect to the device to be tested, the first interface includes multiple terminals, the second interface includes multiple terminals, and the third interface includes multiple terminals. The number of terminals of the first interface, the second interface and the third interface is the same, the multiple terminals of the first interface are connected to the multiple terminals of the third interface in a one-to-one correspondence, and the terminals of the second interface are connected to the terminals of the third interface in a one-to-one correspondence.

[0023] Specifically, Figure 1 and Figure 2As shown, the oscilloscope 1 adopts a four-channel interface, including channel O1, channel O2, channel O3, and channel O4.

[0024] The first measuring box is used to provide an interface for connecting the engine control unit 3, the device to be measured and the oscilloscope 1. In some embodiments, the second interface includes a position sensor connection terminal and a motor connection terminal.

[0025] In some embodiments, the position sensor terminals include four position sensor terminals. Figure 1 As shown, the first measuring box is the throttle unit measuring box 2, and the first interface FA of the throttle unit measuring box 2 includes terminals FA1, FA2, FA3, FA4, FA5 and FA6; the second interface SA includes terminals SA1, SA2, SA3, SA4, SA5 and SA6, wherein the position sensor terminals include terminals SA1, SA2, SA3, SA4, and terminals SA5 and SA6 are motor connection terminals; the third interface TA includes terminals TA1, TA2, TA3, TA4, TA5 and TA6.

[0026] The first interface FA is connected to the throttle valve interface MA of the engine control unit 33 , and the throttle valve interface MA includes a terminal MA1 , a terminal MA2 , a terminal MA3 , a terminal MA4 , a terminal MA5 , and a terminal MA6 . The first end of terminal FA1 is connected to terminal MA1, the second end of terminal FA1 is connected to the first end of terminal TA1, and the first end of terminal SA1 is connected between terminal FA1 and terminal TA1; the first end of terminal FA2 is connected to terminal MA2, the second end of terminal FA2 is connected to the first end of terminal TA2, and the first end of terminal SA2 is connected between terminal FA2 and terminal TA2; the first end of terminal FA3 is connected to terminal MA3, the second end of terminal FA3 is connected to the first end of terminal TA3, and the first end of terminal SA3 is connected between terminal FA3 and terminal TA3; the first end of terminal FA4 is connected to terminal MA4, the second end of terminal FA4 is connected to the first end of terminal TA4, and the first end of terminal SA4 is connected between terminal FA4 and terminal TA4; the first end of terminal FA5 is connected to terminal MA5, the second end of terminal FA5 is connected to the first end of terminal TA5, and the first end of terminal SA5 is connected between terminal FA5 and terminal TA5; the first end of terminal FA6 is connected to terminal MA6, the second end of terminal FA6 is connected to the first end of terminal TA6, and the first end of terminal SA6 is connected between terminal FA6 and terminal TA6.

[0027] The throttle unit 4 includes a position sensor and a motor, wherein the position sensor interface DA includes terminals DA1, DA2, DA3, and DA4, and the motor interface EA includes terminals EA5 and EA6. The second end of terminal SA1 is connected to terminal DA1, the second end of terminal SA2 is connected to terminal DA2, the second end of terminal SA3 is connected to terminal DA3, the second end of terminal SA4 is connected to terminal DA4, the second end of terminal SA5 is connected to terminal EA5, and the second end of terminal SA6 is connected to terminal EA6.

[0028] After the throttle unit measuring box 2 is connected to the engine control unit 3 and the throttle unit 4, the voltage measurement point corresponding to the connection terminal TA1 of the oscilloscope 1 is the sensor power supply 5V+, the voltage measurement point corresponding to the connection terminal TA2 of the oscilloscope 1 is the sensor power supply 5V-, the voltage measurement point corresponding to the connection terminal TA3 of the oscilloscope 1 is the throttle position voltage +, the voltage measurement point corresponding to the connection terminal TA4 of the oscilloscope 1 is the throttle position voltage -, the voltage measurement point corresponding to the connection terminal TA5 of the oscilloscope 1 is the motor power supply +, and the voltage measurement point corresponding to the connection terminal TA6 of the oscilloscope 1 is the motor power supply -.

[0029] In some embodiments, the position sensor terminals include three position sensor terminals. Figure 1 As shown, the first measuring box is a turbocharger measuring box 6, and the first interface FB of the turbocharger measuring box 6 includes terminals FB1, FB2, FB3, FB4 and FB5; the second interface SB includes terminals SB1, SB2, SB3, SB4 and SB5, wherein the position sensor terminals include terminals SB1, SB2, SB3, and terminals SB4 and SB5 are motor connection terminals; the third interface TB includes terminals TB1, TB2, TB3, TB4 and TB5.

[0030] The first interface FB is connected to the turbocharger interface MB of the engine control unit 3, and the turbocharger interface MB includes terminals MB1, MB2, MB3, MB4, and MB5. The first end of terminal FB1 is connected to terminal MB1, the second end of terminal FB1 is connected to the first end of terminal TB1, and the first end of terminal SB1 is connected between terminal FB1 and terminal TB1; the first end of terminal FB2 is connected to terminal MB2, the second end of terminal FB2 is connected to the first end of terminal TB2, and the first end of terminal SB2 is connected between terminal FB2 and terminal TB2; the first end of terminal FB3 is connected to terminal MB3, the second end of terminal FB3 is connected to the first end of terminal TB3, and the first end of terminal SB3 is connected between terminal FB3 and terminal TB3; the first end of terminal FB4 is connected to terminal MB4, the second end of terminal FB4 is connected to the first end of terminal TB4, and the first end of terminal SB4 is connected between terminal FB4 and terminal TB4; the first end of terminal FB5 is connected to terminal MB5, the second end of terminal FB5 is connected to the first end of terminal TB5, and the first end of terminal SB5 is connected between terminal FB5 and terminal TB5.

[0031] The turbocharger 5 unit includes a position sensor and a motor, wherein the position sensor interface DB includes terminals DB1, DB2, and DB3, and the motor interface EB includes terminals EB4 and EB5. The second end of terminal SB1 is connected to terminal DB1, the second end of terminal SB2 is connected to terminal DB2, the second end of terminal SB3 is connected to terminal DB3, the second end of terminal SB4 is connected to terminal DB4, and the second end of terminal SB5 is connected to terminal EB5.

[0032] In some embodiments, a second measuring box is also included, the second measuring box includes a fourth interface and a fifth interface, the first end of the fourth interface is connected in series between the motor connection terminal and the motor of the device under test, the second end of the fourth interface is connected to a resistor, the first end of the fifth interface is connected to both ends of the resistor, and the second end of the fifth interface is used to connect to the oscilloscope 1.

[0033] Specifically, Figure 2 As shown. The second measuring box is a current measuring box 7, the fourth interface TE includes a terminal IE1 and a terminal IE2, and the fifth interface includes a terminal IO1 and a terminal IO2. The two ends of the resistor R1 are respectively connected to the terminal IE1 and the terminal IE2, the terminal IO1 is connected between the resistor R1 and the terminal IE1, and the terminal IO2 is connected between the resistor R1 and the terminal IE2.

[0034] The terminal SB5 is connected to the terminal IE1, the terminal IE2 is connected to the terminal EB5, and the fourth interface TE provides a series interface of the resistor R1, so that the resistor R1 is connected in series between the terminal SB5 and the terminal EB5. The terminal IO1 and the terminal IO2 are used to connect the oscilloscope 1.

[0035] After the turbocharger measuring box 6 is connected to the engine control unit 3 and the turbocharger 5, the voltage measurement point corresponding to the connection terminal TB1 of the oscilloscope 1 is the sensor power supply 5V+, the voltage measurement point corresponding to the connection terminal TB2 of the oscilloscope 1 is the adjustment motor position voltage +, the voltage measurement point corresponding to the terminal TB3 of the oscilloscope 1 is the sensor power supply 5V-, the voltage measurement point corresponding to the connection terminal TA4 of the oscilloscope 1 is the motor power supply +, and the voltage measurement point corresponding to the connection terminal TA5 of the oscilloscope 1 is the motor power supply -.

[0036] In some embodiments, the first measuring box also includes a first shell, a first opening is opened on the first side wall of the first shell, a first interface is fixedly arranged at the first opening, a second opening is opened on the second side wall of the first shell, the second interface is fixedly arranged at the second opening, and a plurality of through holes for fixing the third interface are opened on the third side wall of the first shell, and the plurality of through holes correspond one-to-one to the plurality of terminals of the third interface.

[0037] Specifically, the first measuring box adopts a cubic structure, and the first shell includes a bottom plate, a top plate and four side plates connected in sequence, the first opening and the second opening are provided on the side plates of the first shell, and a plurality of through holes are provided on the top plate. The interior of the shell is used to provide a connection harness between the terminals of the first interface, the second interface and the third interface. It can be understood by those skilled in the art that in some embodiments, the first measuring box also includes a first connection harness and a second connection harness, the first connection harness is used to provide a connector and a harness connecting the engine control unit 3 and the first interface, and the second connection harness is used to provide a connector and a harness connecting the first interface and the device under test.

[0038] In some embodiments, the first side wall and the second side wall are respectively disposed at two ends of the first shell.

[0039] Specifically, the first side wall and the second side wall correspond to two opposite side plates of the first shell, respectively. Alternatively, in another embodiment, the first side wall and the second side wall correspond to two adjacent side plates of the first shell, respectively.

[0040] In some embodiments, the first measuring box further includes a fixing member, which is disposed on the outside of the first side wall and is used to fix the first housing and the motor of the device to be tested.

[0041] Specifically, the first end of the fixing member is fixed to the outer wall of the first shell by screws, and the second end of the fixing member is used to snap onto the outer wall of the motor to achieve a fixed connection between the first shell and the motor of the device under test to prevent the wiring harness connector from slipping during the test.

[0042] In some embodiments, the second measurement further includes a second shell, the second shell is provided with a fourth opening for setting a fourth interface, the second shell is provided with a through hole for fixing a fifth interface, and the resistor is set in the second shell.

[0043] Specifically, the second measuring box adopts a cubic structure, the second shell includes a bottom plate, a top plate and four side plates connected in sequence, and the fourth opening and the fifth opening are provided on the side plates of the second shell. It can be understood by those skilled in the art that in some embodiments, the second measuring box also includes a third connecting wire harness and a fourth connecting wire harness, the third connecting wire harness is used to provide a connector and a wire harness connecting the third interface and the fourth interface, and the fourth connecting wire harness is used to provide a connector and a wire harness connecting the fifth interface and the device to be tested. In some embodiments, the fourth opening and the through hole are respectively provided at both ends of the second shell.

[0044] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A test and analysis device for an engine throttle and a turbocharger, characterized in that: include: An oscilloscope, which is used to display the collected signal; A first measuring box, the first measuring box includes a first interface, a second interface and a third interface, the first end of the first interface is used to connect to an engine control unit, the second end of the first interface is used to connect to the first end of the third interface, the second end of the third interface is used to connect to the oscilloscope, the first end of the second interface is used to connect to the first end of the three interfaces, and the second end of the second interface is used to connect to a device under test, the first interface includes a plurality of terminals, the second interface includes a plurality of terminals, the third interface includes a plurality of terminals, the first interface, the second interface and the third interface have the same number of terminals, the plurality of terminals of the first interface are connected to the plurality of terminals of the third interface in a one-to-one correspondence, and the plurality of terminals of the second interface are connected to the plurality of terminals of the third interface in a one-to-one correspondence.

2. The device according to claim 1, characterized in that The second interface includes a position sensor connection terminal and a motor connection terminal.

3. The device according to claim 2, characterized in that It also includes a second measuring box, which includes a fourth interface and a fifth interface, the first end of the fourth interface is connected in series between the motor connection terminal and the motor of the device under test, the second end of the fourth interface is connected to a resistor, the first end of the fifth interface is connected to both ends of the resistor, and the second end of the fifth interface is used to connect the oscilloscope.

4. The device according to claim 3, characterized in that The first measuring box also includes a first shell, a first opening is formed on the first side wall of the first shell, the first interface is fixedly arranged at the first opening, a second opening is formed on the second side wall of the first shell, the second interface is fixedly arranged at the second opening, and a plurality of through holes for fixing the third interface are formed on the third side wall of the first shell, and the plurality of through holes correspond one-to-one to the plurality of terminals of the third interface.

5. The device according to claim 4, characterized in that The first side wall and the second side wall are respectively arranged at two ends of the first shell.

6. The device according to claim 5, characterized in that The first measuring box further comprises a fixing member, which is arranged on the outer side of the first side wall and is used for fixing the first housing and the motor of the device to be tested.

7. The device according to claim 6, characterized in that The second measuring box further comprises a second shell, the second shell is provided with a fourth opening for setting the fourth interface, the second shell is provided with a through hole for fixing the fifth interface, and the resistor is arranged in the second shell.

8. The device according to claim 7, characterized in that The fourth opening and the through hole are respectively arranged at two ends of the second shell.

9. The device according to claim 3, characterized in that The number of the position sensor terminals is three.

10. The device according to claim 2, characterized in that The number of the position sensor terminals is four.

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