内燃机和相关的运行方法
By installing an external ignition device downstream of the internal combustion engine turbine and upstream of the oxidation catalyst, the problem of slow cold start of the oxidation catalyst is solved, achieving rapid heating and reducing the emission of harmful substances.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DR ING H C F PORSCHE AG
- Filing Date
- 2023-01-29
- Publication Date
- 2026-07-17
AI Technical Summary
When existing internal combustion engines are cold-started, the exhaust gas aftertreatment system, especially the oxidation catalyst, has difficulty reaching the operating temperature quickly, leading to an increase in the emission of harmful substances.
An external ignition device is installed downstream of the turbine and upstream of the oxidation catalyst to heat the catalyst by igniting the combustible mixture in the exhaust gas stream. The secondary air supply in the exhaust system is optimized to improve the sufficiency of the mixture and temperature control.
It accelerates the heat release of the catalyst, improves the heating efficiency of the oxidation catalyst, reduces the emission of harmful substances, lowers the exhaust gas temperature, and simplifies the secondary air supply structure.
Smart Images
Figure CN116892437B_ABST