Exhaust catalyst and vehicle

By setting up an energy storage component on the catalyst body and using phase change materials and heat exchange pipelines to heat the catalytic unit, the problem of the catalyst not reaching the ignition temperature during low-temperature cold starts is solved, achieving rapid ignition and reducing excessive emissions, thus improving the quality of vehicle use.

CN224187646UActive Publication Date: 2026-05-01GREAT WALL MOTOR CO LTD
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Patent Information

Application Number
CN202521360828.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2026-05-01
Estimated Expiration
2035-06-30

AI Technical Summary

Technical Problem

When a vehicle is cold-started at low temperatures, the catalytic converter may not reach its ignition temperature, leading to excessive emissions and prolonged cold-start time, which is especially serious in hybrid vehicles with frequent start-stop cycles.

Method used

An energy storage component, including a phase change material and heat exchange pipeline, is installed on the catalytic converter body. The phase change material is heated by the exhaust gas when the engine is running, and the phase change material releases heat to heat the catalytic unit when the engine is stopped. The heat storage and heat release functions of the energy storage component maintain the temperature of the catalytic unit to ensure rapid ignition.

Benefits of technology

It shortens the engine cold start time, reduces emissions exceeding standards during cold starts, and improves the quality of vehicle use.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to the technical field of vehicle chassis, and provides an exhaust catalyst and a vehicle. The exhaust catalytic converter is arranged in an exhaust system connected with an engine and comprises a catalytic converter body with a catalytic unit and an energy storage assembly arranged on the catalytic converter body. Wherein a phase change material and a heat exchange pipeline are arranged in the energy storage assembly, the heat exchange pipeline is connected with a gas outlet pipeline of the exhaust catalyst, meanwhile, when the engine works, the heat exchange pipeline can introduce gas in the gas outlet pipeline to heat the phase change material, and when the engine stops, the phase change material can release heat to heat the catalytic unit. By means of the heat storage and heat release functions of the energy storage assembly, the catalytic unit can be maintained at a certain temperature when the engine stops, the catalytic unit can reach the ignition temperature as soon as possible when the engine is in cold start, the cold start time of the engine can be shortened, emission exceeding during cold start can be reduced or even avoided, and the service life of the engine is prolonged. And the use quality of the vehicle can be improved.
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