Post-processing sensor installation structure

Abstract

The invention belongs to the technical field of automobile components and provides a post-processing sensor installation structure. A sensor is installed on a post-processor shell, a heat insulation plate is arranged between the sensor and the post-processor shell and comprises a first metal layer, a second metal layer, a heat insulation layer and a reinforcing layer, and the heat insulation layer and the reinforcing layer are arranged between the first metal layer and the second metal layer. The sensor is installed on the post-processor shell, the heat insulation plate is additionally arranged between the sensor and the post-processor shell, a vibration damper is arranged at the joint of the post-processor shell and an automobile frame, the heat insulation plate can play a heat insulation role and also play a vibration damping role, and therefore the sensor is protected against vibration impact of the automobile frame, and the service life of the sensor is prolonged.

Description

technical field [0001] The invention belongs to the technical field of automobile components, and in particular relates to a post-processing sensor installation structure. Background technique [0002] Automobile exhaust after-treatment sensor, as the core component of the automobile exhaust after-treatment system, the pressure difference of the after-processor, the concentration of nitrogen oxides and other parameters measured by the sensor are fed back to the after-treatment control unit to control the amount of urea injection, exhaust Gas aftertreatment regeneration. The reliable installation of the sensor directly affects whether the exhaust aftertreatment system can work normally. [0003] Existing aftertreatment sensors are typically mounted on frame rails above the exhaust aftertreatment housing without any protection. Cars, especially trucks, generally have harsh road conditions, and the vibration of the frame longitudinal beam is severe. The exhaust after-treatmen...

AI Technical Summary

Problems solved by technology

Cars, especially trucks, generally have harsh road conditions, and the vibration of the frame longitudinal beam is severe. The exhaust after-treatment sensor is directly rigidly fixed on the frame longitudinal beam, and its vibration is also relatively large, which has a certain impact on the service life of the sensor. Influence; the automobile exhaust after-treatment sensor is installed on the frame longitudinal beam above the after-treatment housing, and its terminal is arranged inside the after-processor housing, resulting in a long connecting pipe line between the sensor and its terminal and relatively high cost. High, and easy to drag, resulting in easy damage to the pipeline, affecting the normal operation of the sensor; at the same time, the sensor is directly fixed on the longitudinal beam of the frame, without a protective device, the sensor is easy to cause bumps and scratches, resulting in damage

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