CN105182237A - Electronics comprehensive experiment apparatus for automobile engine - Google Patents

Abstract

The invention discloses a comprehensive experiment device for electronic appliances of an automobile engine, which is mainly composed of a high and low temperature environment box, a generator experiment unit, a starter motor experiment unit, an engine electronic control system experiment unit, a measurement and control unit, and a similar fuel tank. The invention is simple in structure, convenient and practical, and can be used not only for the durability assessment and high and low temperature impact test assessment of a single automotive engine electronic and electrical component during the automobile research and development process, but also for the assessment of the working status of the automotive engine electronic and electrical system. At the same time, It can also be used for quality inspection of electronic and electrical product components in the production process.

Description

A comprehensive experimental device for automobile engine electronics

technical field

The invention relates to a comprehensive experiment device for automobile engine electronic appliances.

Background technique

The main electronic and electrical parts of automobile engine consist of generator, starter motor, engine wiring harness, temperature sensor, pressure sensor, position/opening sensor, concentration sensor and speed sensor, as well as ignition coil, fuel injector, air intake system actuator and fuel pump And other electronic and electrical components are supplemented by fuel transmission pipelines.

The performance of automotive electronic and electrical components is an important factor affecting the performance of the vehicle.

As a supplier of automotive electronic and electrical products, it will independently conduct various experimental assessments on the electronic and electrical products it produces.

However, as an automobile is a mechatronics product composed of multiple system units, the coordination between each component and system is particularly important. Therefore, in the process of vehicle development and production, suppliers of automotive electronics and electrical products will Independently carry out various experimental assessments on the electronic and electrical products produced by itself, such as the durability assessment of individual electronic and electrical components of automobile engines or the assessment of high and low temperature impact tests, the assessment of the working conditions of electronic and electrical systems of automobile engines, and the electronic and electrical components in the production process. Quality inspection of electrical product components. These assessments or tests are carried out independently, ignoring the mutual influence of electronic and electrical product components, so the assessment or test results are quite different from the actual operation.

In addition, these assessment systems or inspection systems only have one of the functions of test assessment or quality inspection. When it is necessary to perform assessment or inspection on automotive engine electronics, it is necessary to purchase the corresponding assessment system or inspection system to carry out the assessment or inspection. High cost and low utilization.

Contents of the invention

The present invention intends to provide a comprehensive experimental device for automobile engine electronic appliances, which can be used not only for the durability assessment and high and low temperature impact test assessment of individual automotive engine electronic and electrical components in the process of automobile research and development, but also for the evaluation of automotive engine electronic and electrical systems. At the same time, it can also be used for quality inspection of electronic and electrical product components in the production process.

Patent scheme: a comprehensive experimental device for automobile engine electronic appliances in this scheme, which is mainly composed of high and low temperature environment chamber, automobile alternator test system, starter motor test system, engine electronic control system simulation test system, and similar fuel supply device;

The high and low temperature environment chamber is controlled by a single-chip microcomputer to complete the temperature cycle control by itself, providing a test environment for the testing of automotive electronic and electrical components;

Automotive alternator test system, including the motor drive unit, the drive shaft fixed to the motor drive unit shaft, and the pulley fixed to the drive shaft;

Engine electronic control system simulation test system, including engine electronic controller, sensor, actuator, sensor signal display device and measurement and control system, the interconnection among engine electronic controller, sensor and actuator is realized through engine wiring harness; Electronic control system data acquisition is realized by OBD or CAN technology;

The starter motor test system includes the motor drive device, the drive shaft fixed to the drive shaft of the motor drive device, the flywheel fixed to the drive shaft, the torque sensor, the engine speed sensor, and the flywheel signal ring gear. The torque of the start motor is controlled by the measurement and control system Control the speed of the motor drive device;

A similar fuel supply device, including a similar fuel tank and a similar fuel supply pipeline, provides similar fuel substances for the simulation test system of the engine electronic control system;

Among them, the measurement and control system is composed of electrical control device, industrial control machine PLC and computer. The electrical control device mainly provides the required power supply for the test bench; Collect and analyze the data and signals output by the test system and the simulation test system of the engine electronic control system;

The motor drive device is a servo motor.

The performance of the starter motor in the present invention (transmission speed characteristics, torque speed, power characteristics) is collected by the measurement and control system and a corresponding characteristic curve is fitted. The performance of the automotive alternator (output characteristics, no-load speed or zero current speed, maximum current) and output current are collected by the measurement and control system and the corresponding characteristic curve is fitted.

The starter motor test system in the present invention can test the starter motor, and the automotive alternator test system can test the engine, and the engine electronic control system simulation test system can simulate the working state of the automotive engine electronic and electrical system and detect it. Therefore, the present invention can be used not only for the durability assessment and high and low temperature impact test assessment of a single automotive engine electronic and electrical component during the automobile research and development process, but also for the assessment of the working status of the automotive engine electronic and electrical system. At the same time, it can also be used in the production process. Quality inspection of electronic and electrical product components.

The invention aims at inspecting the working characteristics and evaluating the durability of the electronic and electrical system of the engine and its component parts on the premise that the electronic and electrical system of the automobile engine is working. In the state of the art, only individuals are assessed. For example, a 96-hour high and low temperature assessment was carried out on the engine wiring harness, but the wiring harness itself did not participate in the work during the whole process. And this experimental device, when carrying out experiment, all parts are all in working state. Its output parameters are collected by the measurement and control unit. The working power of sensors, actuators and controllers is provided by the measurement and control unit, and the fuel used in the test process is fuel-like materials. The working parameters of each component of the electronic and electrical system should be transmitted to the data acquisition unit through their respective detection ports (can also be considered to use the vehicle CAN line or K line), and collected by the measurement and control unit through the diagnostic port.

Further, the simulation test system of the engine electronic control system, the starter motor test system and the automotive alternator test system share a servo motor and drive shaft; the structure is greatly simplified, the utilization rate is improved, and the cost is saved.

Further, the transmission shaft and the servo motor are connected through a coupling; the installation and disassembly are simple.

Further, the driving device of the starter motor and the automobile alternator is connected with the transmission shaft through a coupling; the installation and disassembly are simple.

Description of drawings

Fig. 1 is a structural block diagram of an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of an automotive alternator test system;

Fig. 3 is a structural schematic diagram of the starter motor testing system;

Figure 4 is a block diagram of the simulation test of the engine electronic control system;

Fig. 5 is the logical block diagram of Fig. 2;

FIG. 6 is a logic block diagram of FIG. 3 .

Detailed ways

The present invention will be described in further detail below by means of specific embodiments:

Description of drawings: output shaft 1, motor drive device 2, transmission shaft 3, high and low temperature environment box 4, coupling 5, automobile alternator 6, pulley 7, torque sensor 8, flywheel 9, starter motor 10, speed sensor 11.

The embodiment is basically as shown in Figures 1 to 6:

In this scheme, the comprehensive experimental device for automobile engine electronics and electrical appliances, the main motor drive device, high and low temperature environment box, shaft transmission device, automobile alternator test system, starter motor test system, engine electronic control system simulation test system, measurement and control system, etc. Composition of fuel supply device;

The motor driving device is a multifunctional servo motor. When using the automotive alternator test system and the engine electronic control system simulation test system for testing, the motor drive device is a power motor that mainly drives the automotive alternator and flywheel to rotate; when using the starter motor testing system for testing, the motor drive The motor is similar to a dynamometer, and the performance of the starter motor is tested through the torque sensor on the motor and the shaft drive.

The high and low temperature environment chamber is controlled by a single-chip microcomputer to complete the temperature cycle control (the temperature can be changed alternately from -40°C to 150°C), providing a test environment for the testing of automotive electronic and electrical components;

Shaft transmission device, which mainly realizes the connection between the output shaft of the motor drive device and the power transmission shaft of the test device through a coupling.

The automotive alternator test system consists of a motor drive device, a drive shaft, and a pulley fixed to the drive shaft. The speed of the automobile alternator is controlled by the measurement and control system by controlling the speed of the motor drive. The performance of the automotive alternator (output characteristics, no-load speed or zero current speed, maximum current) and output current are collected by the measurement and control system and the corresponding characteristic curve is fitted.

The starter motor test system includes a motor drive device, a transmission shaft, a flywheel fixed to the transmission shaft, an engine speed sensor, and a flywheel signal ring gear. The torque of the starter motor is controlled by the measurement and control system by controlling the speed of the motor drive. The performance of the starter motor (transmission speed characteristics, torque speed, power characteristics) is collected by the measurement and control system and the corresponding characteristic curve is fitted.

The engine electronic control system simulation test system includes engine electronic controllers, sensors, actuators, sensor signal display devices and measurement and control systems. The interconnection between engine electronic controllers, sensors, and actuators is realized through the engine wiring harness. The measurement and control system adopts OBD or CAN technology to collect data from the engine electronic control system.

The measurement and control system is composed of electrical control device, industrial control machine PLC and computer. The electrical control device mainly provides the required power for the test bench; the industrial control machine PLC and computer mainly realize the test system of the automobile alternator and the starter motor. And the data and signals output by the simulation test system of the engine electronic control system are collected and analyzed.

The quasi-fuel supply device mainly consists of a quasi-fuel tank and a quasi-fuel supply pipeline. Provide fuel-like substances for the simulation test system of the engine electronic control system.

Starter motors, speed sensors, automotive alternators, and other electronic and electrical components of the engine can be installed inside the high and low temperature box with corresponding tooling brackets according to the structural form and relative position of the original components.

The same servo motor (or similar) is used as the drive motor for the automotive alternator test system and the starter motor test system. The work of the servo motor is controlled by the measurement and control unit and the working parameters of the servo motor are collected.

The servo motor works independently during the performance test of the automobile alternator and the performance test of the starter motor (the two experiments themselves are completed independently).

When testing the performance of an automotive alternator (output characteristics, no-load speed or zero current speed, maximum current), the servo motor is an electric motor that drives the automotive alternator to run. The speed of the servo motor is controlled by the measurement and control system, thereby realizing the control of the speed of the generator. The output performance of the automobile alternator is tested by the measurement and control system and the following curves are fitted. The experimental device can set the temperature according to the needs, and conduct the performance test of the automobile alternator under the condition of temperature shock.

When testing the performance of the starter motor (transmission speed characteristics, torque speed, power current), the servo motor is a kind of dynamometer, which is used to test the speed, torque and power output state of the starter motor. The servo motor is controlled by the measurement and control system, so as to realize the acquisition of the three characteristic parameters of the starter motor, and the measurement and control system will test and fit the curve. In this experiment, the temperature can be set according to the needs, and the performance test of the generator under the condition of temperature shock can be carried out.

Start the motor and repeat the start test. During the test, the measurement and control system controls the working condition of the starter motor, and judges whether the start is successful through the flywheel speed measured by the speed sensor and the torque measured by the torque sensor, and accumulates the number of starts. This experiment can simultaneously test the starting performance of the starter motor at low temperature (-40°C).

Engine electronic control system simulation test system. The purpose of this experiment is to test the working characteristics and durability of the electronic and electrical system of the engine and its parts and components under the premise of the electronic and electrical system of the automobile engine. In the state of the art, only individuals are assessed. For example, a 96-hour high and low temperature assessment was carried out on the engine wiring harness, but the wiring harness itself did not participate in the work during the whole process. And this experimental device, when carrying out experiment, all parts are all in working state. Its output parameters are collected by the measurement and control unit.

In the test, the active speed sensor, camshaft phase sensor, intake air volume detection sensor, throttle position sensor, oxygen sensor and other sensors, actuators and controllers are powered by the measurement and control system, and the fuel used in the test process is similar to fuel Material. The working parameters of each component of the electronic and electrical system should be collected and output by the computer through the measurement and control system (can also be considered to use the vehicle CAN line or K line, which can be collected by the measurement and control unit through the diagnostic port).

The simulation test system of the engine electronic control system, the starter motor test system and the automotive alternator test system share a servo motor and drive shaft; the structure is greatly simplified, the utilization rate is improved, and the cost is saved.

In Figure 1:

1. Flywheel installation tooling and belt pulley installation tooling can be different according to the structural form of different engines, so as to meet the requirements of the corresponding installation geometric dimensions and the relative transmission relationship requirements of each original component

2. The starting motor, crankshaft position sensor, alternator and other original components can be installed inside the high and low temperature box with corresponding tooling brackets according to the structural form and relative positional relationship of the original components.

3. The solid line in the figure indicates the power transmission route, and the dotted line indicates the data transmission route.

In Figure 2:

1. The pulley installation tooling can be different according to the structural form of different engines to meet the corresponding installation geometry requirements.

2. The automotive alternator can be installed inside the high and low temperature box with corresponding tooling brackets according to its structure and relative position.

3. The solid line in the figure indicates the mechanical power transmission route, and the dotted line indicates the signal data transmission route.

In Figure 3:

1. Flywheel installation tooling can be different according to the structural form of different engines to meet the requirements of the corresponding installation geometric dimensions and the relative transmission relationship requirements of each original

2. The starting motor, crankshaft position sensor and other original parts can be installed inside the high and low temperature box with corresponding tooling brackets according to the structural form and relative positional relationship of the original parts

3. The solid line in the figure indicates the power transmission route, and the dotted line indicates the data transmission route.

In Figure 4-6:

The solid line represents the mechanical power transmission route, the dotted line represents the signal transmission route, and the dotted line represents the electromagnetic transmission route.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (4)

1. a car engine electronic electrical equipment comprehensive experimental device, is characterized in that,

Form primarily of high and low temperature environment case, system for testing automobile alternating current generator, starter motor test macro, electronic engine management system simulated testing system, class A fuel A feedway; High and low temperature environment case, completes temperature cycles voluntarily by Single-chip Controlling and controls, for the test of automotive electronics electrical component provides experimental enviroment; System for testing automobile alternating current generator, the transmission shaft comprise motor driver, fixing with motor driver rotating shaft, the belt pulley fixing with transmission shaft; Electronic engine management system simulated testing system, comprise engine electronic control, sensor, actuator, sensor signal display device and TT&C system, being interconnected between engine electronic control, sensor, actuator is realized by engine wiring harness; TT&C system adopts OBD or CAN technology to realize to electronic engine management system data acquisition; Starter motor test macro, the transmission shaft comprise motor driver, fixing with motor driver rotating shaft, flywheel, torque sensor, engine speed sensor, the flywheel signal gear ring fixing with transmission shaft, the torque of starter motor is controlled by the rotating speed controlling motor driver by TT&C system; Class A fuel A feedway, comprises class A fuel A case and class A fuel A feeding pipe, for electronic engine management system simulated testing system provides class A fuel A material; Wherein, TT&C system, comprises and being made up of electrical control gear, Industrial Control Computer PLC and computing machine, and electrical control gear is mainly the power supply that test-bed provides needs; Industrial Control Computer PLC and computing machine mainly realize to system for testing automobile alternating current generator, starter motor test macro and electronic engine management system simulated testing system export data and signal gather and analyze; Motor driver is servomotor.

2. a kind of car engine electronic electrical equipment comprehensive experimental device according to claim 1, it is characterized in that, electronic engine management system simulated testing system, starter motor test macro and system for testing automobile alternating current generator share servomotor, a transmission shaft.

3. a kind of car engine electronic electrical equipment comprehensive experimental device according to claim 1, be is characterized in that, connected between transmission shaft with servomotor by shaft coupling.

4. a kind of car engine electronic electrical equipment comprehensive experimental device according to claim 1, it is characterized in that, the drive unit of starter motor and AC generator for vehicle is connected by shaft coupling with between transmission shaft.