CN220367677U

CN220367677U - Portable automobile engine measurement system teaching presentation device that admits air

Info

Publication number: CN220367677U
Application number: CN202223542177.3U
Authority: CN
Inventors: 夏继伟; 刘向斌; 孙妍; 刘颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2024-01-19
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a portable automobile engine air inlet measurement system teaching demonstration device, which comprises an air inlet, an air inlet fan, an air flow sensor, an air inlet pipe, a simulated throttle valve, an air inlet absolute pressure sensor, an exhaust fan, an exhaust port, a digital voltmeter, a direct current motor speed regulator and a rectifying voltage stabilizer; the device can be operated by related personnel to realize the works such as part display, working principle demonstration, sensor operation data detection and the like, and meanwhile, the device also has the characteristics of convenient carrying, visual demonstration and the like, can effectively improve the training and learning effects of related professionals, reduces teaching difficulty, and provides powerful support for vast automobile maintenance technicians to master related skills.

Description

Portable automobile engine measurement system teaching presentation device that admits air

Technical Field

The utility model relates to the field of detection of automobile engine electric control management system devices, in particular to a portable automobile engine air intake measurement system teaching demonstration device.

Background

The automobile engine electric control management system is a device for guaranteeing that an engine runs under low oil consumption, low emission and high power, the automobile engine air intake measurement system is one of the keys for guaranteeing the realization of the functions, as an automobile maintenance practitioner grasps the working principle of the system, the maintenance method is a necessary skill, in actual training and learning, the defects that the principle of a relevant sensor of the automobile engine air intake measurement system is displayed in detail, parts are not easy to detach and the like are caused due to the influence of the structural factors of an automobile engine cabin and the like, so that the training and learning effects of relevant personnel are affected.

Disclosure of Invention

The utility model discloses a portable teaching demonstration device for an air intake measurement system of an automobile engine, which can be used for realizing the works of part display, working principle demonstration, sensor operation data detection and the like by related personnel through operating the device.

The technical scheme disclosed by the utility model is as follows:

a teaching demonstration device of a portable automobile engine air inlet measurement system comprises an air inlet, an air inlet fan, an air flow sensor, an air inlet pipe, an analog throttle valve, an air inlet absolute pressure sensor, an exhaust fan, an exhaust port, a digital voltmeter, a direct current motor speed regulator and a rectifying voltage stabilizer;

the rectifying voltage stabilizer terminal N, L is connected with an AC220V power supply, the + V, COM of the rectifying voltage stabilizer DC output end is connected with the speed regulator of the direct current motor of the air inlet fan and the DC input end of the speed regulator of the direct current motor of the exhaust fan, the DC output end of the speed regulator of the direct current motor of the air inlet fan is connected with the motor of the air inlet fan, and the DC output end of the speed regulator of the direct current motor of the exhaust fan is connected with the motor of the exhaust fan; the rectifying voltage stabilizer DC output end + V, COM is respectively connected with the power supply end and the grounding end of the air flow sensor and the air inlet absolute pressure sensor, and the rectifying voltage stabilizer DC output end COM is respectively connected with the grounding end of the air flow sensor-digital display voltmeter and the grounding end of the air inlet absolute pressure sensor-digital display voltmeter; the air flow sensor signal end is connected with the air flow sensor-digital display voltmeter power supply end; the signal end of the air inlet absolute pressure sensor is connected with the power supply end of the air inlet absolute pressure sensor-digital display voltmeter.

The utility model has the advantages that:

1. the device regulates the speed of the air inlet fan and the air outlet fan through the direct current motor speed regulator, and controls the opening of the air inlet pipe through the simulated throttle valve to jointly simulate the air inflow of the engine at different rotating speeds, so that the situation is difficult to simulate and measure in a real vehicle.

2. The device can respectively load an engine air flow sensor and an air inlet absolute pressure sensor into the device, respectively show real-time change data of air flow and air inlet pressure in an air inlet pipe of the engine to a trainee through system simulation, and provide help for automobile maintenance technicians to better learn the working principle of the air inlet measurement system sensor;

3. the digital display voltmeter in the device displays the data condition of the air flow sensor and the air inlet absolute pressure sensor in real time, thereby providing help for vast automobile maintenance technicians to learn and understand relevant skills;

4. through the device, the air flow change in the air inlet pipe of the automobile engine can be intuitively and efficiently simulated, and the air flow change is converted into an electric signal to be displayed to a trainee after being perceived by a related sensor, so that in conclusion, the system demonstration provides assistance for teaching staff in the aspects of sensor working principle explanation, physical display and the like;

5. the sensor teaching demonstration device for the portable automobile engine air intake measurement system has the advantages that relevant parts in the sensor teaching demonstration device are mainly arranged in an aviation case, and a 220V alternating current power supply is used, so that a teaching person can carry the sensor teaching demonstration device to relevant places to develop training teaching, and the sensor teaching demonstration device is more convenient and efficient;

drawings

FIG. 1 is a schematic circuit diagram of the present utility model;

1. an air inlet; 2. an air intake fan; 3. an air flow sensor; 4. an air inlet pipe; 5. simulating a throttle valve; 6. an intake absolute pressure sensor; 7. an exhaust fan; 8. an exhaust port; 9. air flow sensor-digital display voltmeter; 10. an air inlet absolute pressure sensor-digital display voltmeter; 11. an exhaust fan-dc motor governor; 12. an air inlet fan-DC motor speed regulator; 13. 220V alternating current power supply connecting plug; 14. 12V/5V rectifying voltage stabilizer.

Detailed Description

The teaching demonstration device of the portable automobile engine air intake measurement system comprises an air tank, an air inlet 1, an air intake fan 2, an air flow sensor 3, an air inlet pipe 4, a simulated throttle valve 5, an air intake absolute pressure sensor 6, an exhaust fan 7, an air outlet 8, an air flow sensor-digital display voltmeter 9, an exhaust fan-direct current motor speed regulator 11, an air intake fan-direct current motor speed regulator 12 and a 12V/5V rectification voltage regulator 14;

rectifying voltage stabilizer (power: 200W, input: AC220V, output: DC5V-12A, DC V-10A); DC motor speed regulator (voltage: DC12V, current: 10A, maximum power: 120W, speed regulation range: 0-100%); digital display voltmeter (measuring range: DC5V-120V, working current)<23mA, display mode: three-position '0.56' LED nixie tube); an air intake fan (small axial fan; operating voltage: 12V, operating current: 0.12A, power: 1W); exhaust fan (Small frequency centrifugal fan; working voltage: 12V, working current 1.2A, power 14.4W, air volume 0.88 m) ³ /min)。

The device simulates the trend of a normal running circuit of an engine:

1. the inlet fan circuit trend: the rectifying voltage stabilizer terminal N, L is connected to AC220V, the rectifying voltage stabilizer DC output end + V, COM, the direct current motor speed regulator DC input end (the rotating speed is regulated by a speed regulating switch in the direct current motor speed regulator), the direct current motor speed regulator DC output end, the air inlet fan power supply end, the air inlet fan grounding end and the direct current motor speed regulator DC input end.

2. The exhaust fan circuit goes: the rectifying voltage stabilizer terminal N, L is connected to AC220V, the rectifying voltage stabilizer DC output end + V, COM, the direct current motor speed regulator DC input end (the rotating speed is regulated by a speed regulating switch in the direct current motor speed regulator), the direct current motor speed regulator DC output end, the exhaust fan power supply end, the exhaust fan grounding end and the direct current motor speed regulator DC input end.

3. Air flow sensor circuit trend: the rectifying voltage stabilizer terminal N, L is connected to the AC 220V-the rectifying voltage stabilizer DC output end + V, COM-the air flow sensor.

4. The circuit trend of the air inlet absolute pressure sensor is as follows: the rectifying voltage stabilizer terminal N, L is connected to the AC 220V-the DC output end of the rectifying voltage stabilizer + V, COM-the air inlet absolute pressure sensor.

5. The flow sensor-digital display voltmeter circuit trend of the air intake: the method comprises the steps of an air inlet flow sensor signal end, a digital display voltmeter power supply end, a digital display voltmeter grounding end and a rectifying voltage stabilizer DC output end COM.

6. The absolute pressure sensor of the intake-digital display voltmeter circuit trend: the signal end of the air inlet absolute pressure sensor, the power supply end of the digital display voltmeter, the grounding end of the digital display voltmeter and the DC output end COM of the rectifying voltage stabilizer.

The device comprises the following specific operation steps: firstly, a rectifying voltage stabilizer terminal N, L is connected into an AC220V, at this time, an operator can adjust an exhaust fan direct current motor speed regulator and an intake fan direct current motor speed regulator according to measurement requirements, and adjust the rotation speed of an intake and exhaust fan, so that the change of air pressure and air flow rate in an air inlet pipe when an engine actually operates is simulated, meanwhile, the operator can also adjust the air inflow in air through adjusting the opening of a simulated throttle valve 5 and the opening of the engine throttle valve, and finally, the measurer can check the voltage values of an air flow sensor 3 and an air inlet absolute pressure sensor 6 in real time through an air flow sensor-digital display voltmeter 9 and an air inlet absolute pressure sensor-digital display voltmeter 10, and analyze and check the change of the voltage values under different air pressure flow rates in the air inlet pipe of the engine.

Claims

1. A portable automobile engine measurement system teaching presentation device that admits air, its characterized in that: the device comprises an air inlet (1), an air inlet fan (2), an air flow sensor (3), an air inlet pipe (4), an analog throttle valve (5), an air inlet absolute pressure sensor (6), an exhaust fan (7), an exhaust port (8), a digital voltmeter, a direct current motor speed regulator and a rectifying voltage stabilizer;