For vehicle exhaust systems and vehicles
By introducing outside air into the vehicle's exhaust system to mix with the powertrain's exhaust gas and actively ignite it, the problem of insufficient catalyst activity in the three-way catalytic converter during cold starts is solved, achieving a highly efficient exhaust gas purification effect and reducing pollutant emissions during vehicle cold starts.
CN224452886UActive Publication Date: 2026-07-03GREAT WALL MOTOR CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREAT WALL MOTOR CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
When a vehicle is cold-started, the three-way catalytic converter has insufficient catalyst activity, and unburned hydrocarbons and carbon monoxide cannot be effectively oxidized and purified, resulting in excessive vehicle emissions.
Method used
A preheating device introduces outside air to mix with the exhaust gas from the powertrain and actively ignites it, generating heat to preheat the after-treatment device, ensuring that the catalyst quickly reaches the ignition temperature and fully purifies unburned gases.
Benefits of technology
It effectively solves the problem of excessive emissions during vehicle cold starts, improves the purification efficiency of the after-treatment device, and reduces pollutant emissions during the cold start phase.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224452886U_ABST
Abstract
This utility model relates to the field of vehicle exhaust and discloses an exhaust system for vehicles and a vehicle. The exhaust system according to this utility model includes an intake device, a powertrain, an aftertreatment device, and a preheating device. The intake device is provided with a first outlet and a second outlet; the powertrain is provided with an intake port and an outlet, the intake port being connected to the first outlet; the aftertreatment device is connected to the outlet and is used to treat the exhaust gas discharged from the powertrain; the preheating device is selectively connected to both the second outlet and the outlet, and its outlet is connected to the aftertreatment device. The preheating device is adapted to actively ignite the combustion air and preheat the aftertreatment device. The exhaust system according to this utility model introduces outside air through the preheating device, mixes the air with the exhaust gas from the powertrain, and actively ignites it. The heat generated is used to preheat the aftertreatment device, enabling the aftertreatment device to perform a highly efficient purification function during cold starts in the vehicle, reducing emissions during cold starts.
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