Detection method of water resistance risk of vehicle oxygen sensor in vehicle environment

A vehicle-used oxygen sensor and oxygen sensor technology, which is applied in the direction of machines/engines, electronic control of exhaust treatment devices, diagnostic devices of exhaust treatment devices, etc., can solve problems such as oxygen sensor rupture and damage, and achieve power performance. The effect of improving reliability

Active Publication Date: 2019-10-08
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology

However, since the oxygen sensor is mainly composed of a ceramic body, it will break and damage the oxygen sensor when encountering liquid water at high temperature

Method used

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  • Detection method of water resistance risk of vehicle oxygen sensor in vehicle environment
  • Detection method of water resistance risk of vehicle oxygen sensor in vehicle environment
  • Detection method of water resistance risk of vehicle oxygen sensor in vehicle environment

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the drawings.

[0033] Such as Figure 1 to Figure 3 The shown detection device for the risk of water splashing under the vehicle environment of the oxygen sensor for a vehicle includes an oxygen sensor 1, a thermocouple 2 and a high temperature endoscope 3. A carbon powder layer 1b is provided on the outer surface of the oxygen sensor sensing element 1a of the oxygen sensor 1. The oxygen sensor 1 is installed in the exhaust pipe 4 of the entire vehicle, the thermocouple 2 is arranged on the wall of the exhaust pipe beside the oxygen sensor 1, and the high temperature endoscope 3 is arranged to directly observe the oxygen sensor 1. The location of the stagnant water situation.

[0034] The method for detecting the risk of water splashing resistance in the vehicle oxygen sensor environment of the present invention adopts the detection device of the vehicle oxygen sensor water risk resistance in the veh...

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Abstract

The invention discloses a detecting device and a method of the water drenching resisting risk of a vehicle oxygen sensor under overall vehicle environment. The detecting device comprises an oxygen sensor, a thermocouple and a high-temperature resisting endoscope; a carbon powder layer is arranged on the surface of an oxygen sensor sensing element of the oxygen sensor; the oxygen sensor is mountedin an overall vehicle exhaust pipe; the thermocouple is arranged on the wall of an exhaust pipe beside the oxygen sensor; and the high-temperature resisting endoscope is arranged in a position capableof directly observing the water accumulating condition of the oxygen sensor. The detecting device can effectively estimate the water drenching resistance of the oxygen sensor under overall vehicle environment, improves the use reliability of the oxygen sensor, and can guarantee the overall vehicle dynamic property, economy and discharge performance.

Description

Technical field [0001] The invention belongs to the technical field of gasoline engine electronic injection, and specifically relates to a detection device and method for the risk of water splashing under the environment of a vehicle oxygen sensor. Background technique [0002] With the implementation of increasingly stringent national fuel consumption and emission regulations and requirements, the country has higher and higher requirements for vehicle emissions. The oxygen sensor is an important part of the engine closed-loop control and monitoring of exhaust gas and three-way catalyst. The reliability of its product directly affects the engine's emissions, fuel consumption and other performance. However, since the oxygen sensor is mainly composed of ceramic body, it will break and damage the oxygen sensor when it encounters liquid water at high temperature. How to evaluate the risk of water spray resistance of the oxygen sensor in the vehicle layout environment and ensure the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N11/00
CPCY02T10/40
Inventor 杨政易开红刘斌缪曙霞余小舟
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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