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Air flow meter

An air flow meter, hollow technology, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring devices, etc., can solve the problem of inaccurate detection data, and achieve the effect of simple operation, low cost and improved accuracy

Inactive Publication Date: 2014-10-08
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the thermal air flowmeter has its disadvantages. When the air flow passes through the hot film or hot wire, it takes away part of the temperature and at the same time generates friction with the hot wire or hot film to provide heat, so the detection data is not accurate.

Method used

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Please refer to figure 1 As shown, a preferred embodiment of an air flowmeter of the present invention includes: a measuring body 2 and a rectifier 3, and the measuring body 2 includes a housing 14, a wind direction column 10, an impeller 8, a rotating shaft 7, a stator core 5, a rectangular Coil 4 and magnet 6. The rectifier 3 is arranged inside the measuring body 2, the measuring body is fixed on the side wall of the circular tube cavity 1, and the air inlet 15 is facing the air inlet of the circular tube cavity 1, which is beneficial to maintain the air flow The maximum power energy enters the air inlet 15 vertically. The air outlet 13 is opposite to the air inlet 15 .

[0024] figure 2 It is an exploded view of the present invention. The housing 14 is a hollow cylinder with one end open and narrow at the top and wide at the bottom. An ...

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Abstract

The invention relates to an air flow meter. The air flow meter comprises a measuring body for measuring air flow. Some specific measuring devices and a rectifier are contained in the measuring body. An air flow channel, an impeller, a magnet and a rectangular coil are arranged in the measuring body. When air flows, the impeller drives the magnet to rotate and enables the rectangular coil to cut magnetic induction lines, a voltage signal is accordingly generated, the rectifier receives the generated voltage signal, and then the voltage signal is converted into a direct voltage signal to be transmitted to an ECU and serve as an important parameter of the basic oil injection quantity of an engine. The air flow meter can be manufactured with low cost and enables accurate detection on the air flow to become possible, influence factors are avoided while the air flow is detected, and therefore the accuracy is greatly improved compared with a traditional air flow meter; in addition, the air flow meter is easy and convenient to operate and low in cost, has the high use value, and can be operated without faults for a long time.

Description

technical field [0001] The invention relates to an air flow meter. Background technique [0002] The term "air" is used as an example for a gas or gas mixture whose flow rate can be determined. Basically, the flow rate of each gas or mixed gas can be determined by the air flow meter of the present invention. [0003] The air flow meters currently used in automobiles are mainly thermal air flow meters. The air flow meter for the vehicle is installed on the airflow channel between the car filter and the throttle valve to measure the intake air volume sucked into the engine, and its output signal is used as the main parameter to control the fuel injection quantity in the fuel injection system of the car engine The basic fuel injection volume of a car, so the air flow meter has a great impact on the performance of the vehicle, directly affecting the power, economy, fuel consumption, and exhaust emission indicators of the car engine. [0004] However, the thermal air flowmeter...

Claims

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Application Information

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IPC IPC(8): G01F1/075
Inventor 冯辉宗杨广尹胜袁荣棣谢闵君秦了
Owner CHONGQING UNIV OF POSTS & TELECOMM
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