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Engine electronic control unit testing device and system

A technology of electronic control unit and test device, which is applied in the direction of test/monitoring control system, general control system, electrical test/monitoring, etc. It can solve the problems of affecting test work efficiency, single feedback signal of test system, poor portability, etc.

Inactive Publication Date: 2021-04-27
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, building the engine electronic control system at the experimental site has the following problems: the portability of the entire system to be tested is poor, and there are many system components. It is necessary to build, install and debug the on-site system when arriving at the experimental site, which affects the test work efficiency; The feedback signal is single. Generally, after the test starts, the relevant fault signals in the processor of the engine electronic control unit can only be monitored through the CAN bus communication line, and there is a lack of real-time monitoring of the working status of important actuators (fuel injectors, oil pumps). monitoring means

Method used

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  • Engine electronic control unit testing device and system
  • Engine electronic control unit testing device and system
  • Engine electronic control unit testing device and system

Examples

Experimental program
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Embodiment 1

[0030] figure 1 It is a schematic structural diagram of an engine electronic control unit testing device provided in Embodiment 1 of the present invention. This embodiment is applicable to testing an engine electronic control unit. The device includes: at least one simulated load module 11;

[0031] Each simulated load module 11 is connected with the engine electronic control unit 12 and the monitoring instrument 13 through a wire harness, and is used to start work after receiving the first control command of the engine electronic control unit 12, and sends a current signal to the monitoring instrument 13 to Realize the test of the engine electronic control unit 12 .

[0032] In this embodiment, the simulated load module 11 can be understood as a module for simulating actuators (for example, fuel injectors, oil pumps), and the simulated load module 11 can be composed of circuits, which can include resistors, inductors, capacitors, current collection and / or voltage components...

Embodiment 2

[0056] Figure 5 It is a schematic structural diagram of an engine electronic control unit testing device provided in Embodiment 2 of the present invention. The technical solution of this embodiment is further refined on the basis of the above technical solution, the device includes: at least one analog load module 41 and an analog signal module 42, Figure 5 Take an analog load module 41 as an example.

[0057] The analog signal module 42 is connected with the engine electronic control unit 43 and the control terminal 44 through a wire harness, and is used to start work according to the second control command of the control terminal 43 and send analog data to the engine electronic control unit 43 .

[0058] In this embodiment, the analog signal module 42 can be understood as a module for simulating various types of signals received by the engine electronic control unit 43 during operation, for example, the signals can be temperature signals, pressure signals, switch signals,...

Embodiment 3

[0108] Figure 14A schematic structural diagram of an engine electronic control unit testing system provided in Embodiment 3 of the present invention, the system includes: an engine electronic control unit testing device 71 provided in any embodiment of the present invention, an engine electronic control unit 72, and a control terminal 73 and monitoring instrument 74.

[0109] The engine electronic control unit testing device 71 is used to start work according to the received first control instruction sent by the engine electronic control unit 72, generate a current signal, and send the current signal to the monitoring instrument 74; and / or, according to the received control terminal The second control instruction sent by 73 starts work, generates at least one piece of simulation data, and sends it to the engine electronic control unit 72;

[0110] The engine electronic control unit 72 is used to determine corresponding actual data according to each simulated data, and send e...

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Abstract

The embodiment of the invention discloses an engine electronic control unit testing device and system. The device comprises at least one simulation load module which is connected with an engine electronic control unit and a monitoring instrument through a wire harness, and is used for starting work after a first control instruction of the engine electronic control unit is received and sensing current signals to a monitoring instrument to realize test on the engine electronic control unit. The simulation load module simulates the oil injector and the oil pump to work, the test is simple and convenient to implement and good in portability, the monitoring instrument can monitor the working current of the simulation load module in real time, problems such as faults occurring in operation can be found in time, one or more simulation load modules are arranged according to parameters of the engine oil injectors and the oil pumps needing to be simulated, different engine oil injectors and oil pumps are simulated, most or even all engine oil injector and oil pump models can be tested, the coverage is wide, and the application range is wider.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automatic testing, in particular to a testing device and system for an engine electronic control unit. Background technique [0002] The engine electronic control unit must pass the relevant electromagnetic compatibility standard test (such as GB17626, GJB151B, etc.) in the development stage before it can enter the market as a product. Existing technology: At present, the electromagnetic compatibility test of the engine electronic control unit needs to carry the electronic control unit, engine wiring harness, power supply, important actuators such as fuel injectors, oil pumps and other components to a qualified test site to build a set on site that can make the electronic control unit The engine electronic control system in which the unit is in a specific working state. [0003] However, building the engine electronic control system at the experimental site has the following pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 唐立群
Owner FAW JIEFANG AUTOMOTIVE CO