Sheet type oxygen sensor and mounting and working modes thereof

A technology of oxygen sensor and working method, which is applied in the direction of instruments, measuring devices, noise reduction devices, etc., can solve the problems of reducing the degree of contact between hot air and the probe, cost, volume design layout restrictions, shortening the ignition time, etc.

Inactive Publication Date: 2015-06-03
ZHEJIANG FAI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the internal heating of the chip oxygen sensor probe is generated by very thin platinum wires. When the sensor is required to reduce the axial size and cost, the wires have to be made very thin, so that the consistency and reliability of the product will decrease, so How to make the chip oxygen sensor without self-heating work normally and shorten the light-off time is a topic worth exploring
[0004] The Chinese patent "Oxygen Sensor for Motorcycle Engine Air-Fuel Ratio Feedback Control" (Patent No.: 03240466.2) dis

Method used

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  • Sheet type oxygen sensor and mounting and working modes thereof
  • Sheet type oxygen sensor and mounting and working modes thereof
  • Sheet type oxygen sensor and mounting and working modes thereof

Examples

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Embodiment Construction

[0021] Such as figure 1 As shown, the chip oxygen sensor 1 is installed on the opposite side of the engine cylinder head 2 and the engine exhaust chain, about 70 mm away from the exhaust valve 3a, and can be used to quickly and effectively detect the oxygen content in the exhaust gas.

[0022] figure 2 It is a schematic diagram of the second installation structure of the chip oxygen sensor and its installation and working method provided by the present invention. The chip oxygen sensor 1 is installed at a position within about 300mm from the engine exhaust valve 3a.

[0023] image 3 Shown is a schematic diagram of the third installation structure of the chip oxygen sensor provided by the present invention and its installation and working method, which includes an exhaust extension channel 4 connected between an engine exhaust port 3b and an exhaust pipe flange 3c, The oxygen sensor 1 is installed on the exhaust extension duct 4 . In addition, the exhaust channel 4 can be ...

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Abstract

The invention relates to a sheet type oxygen sensor and mounting and working modes thereof. The sensor comprises a panel element, a protective hood and an air inlet window, wherein the sensor is characterized in that an oxygen sensor body is mounted on an exhaust passage which is 30-300mm far from an exhaust valve of an engine; exhaust gas of the engine flows around the panel element; a ventilating window is formed in a housing of the metal protective hood; the mounting direction of the panel element is parallel to the direction of an exhaust gas flow; the sensor body is heated by the exhaust gas of the engine and works. The sheet type oxygen sensor can be applied to automobiles, motorcycles, generators and other universal gasoline engine devices. The invention aims to provide the sheet type oxygen sensor which is reasonable in arrangement, low in cost and long in service life, and the reaction performance is improved; and moreover, the invention provides the mounting and working modes of the sheet type oxygen sensor.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an engine management system, in particular to an oxygen sensor for controlling the gas mixture concentration of a gasoline engine. Background technique [0002] The oxygen sensor is a key sensor to realize the feedback control of the engine air-fuel ratio. The installation method of the oxygen sensor plays a key role in the performance of the oxygen sensor, especially its service life and working efficiency. [0003] The sensing element of the oxygen sensor is called the oxygen sensor probe. The probe of the concentration type oxygen sensor for gasoline engine is mainly made of yttrium-containing zirconia material. Zirconia is a special electrolyte at high temperature. In the absence of oxygen, it can convert hydrocarbons and other substances in the exhaust gas into electromotive force. The engine controller can adjust the engine air-fuel ratio according to this elec...

Claims

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Application Information

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IPC IPC(8): G01N27/409F01N13/08
Inventor 郗大光杨延相郑远师
Owner ZHEJIANG FAI ELECTRONICS
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