Integration of electric heater with aftertreatment catalyst thermal management
By introducing an aftertreatment system heater into the exhaust aftertreatment system and using an electric heater to increase the exhaust gas temperature, the problem of insufficient catalyst temperature under cold start and low load conditions is solved, thus achieving effective conversion of harmful emissions and meeting emission standards.
CN116583662BActive Publication Date: 2026-06-05CUMMINS INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CUMMINS INC
- Filing Date
- 2021-12-17
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
Under cold start and low load conditions, the catalyst temperature of the exhaust aftertreatment system is insufficient, resulting in the ineffective conversion of harmful emissions and failure to meet stringent emission standards.
Method used
By introducing an after-treatment system heater into the exhaust after-treatment system, the temperature of the exhaust gas is increased by using an electric heater. Combined with the controller to monitor and adjust the heater power in real time, the exhaust gas can be ensured to reach and maintain the target temperature.
Benefits of technology
It effectively improves the activity of the catalyst, reduces the generation of harmful emissions, meets emission standards, and optimizes engine fuel consumption and efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116583662B_ABST
Abstract
A method for increasing a temperature of exhaust gas to a target temperature is provided. The method includes determining, by a controller, a target energy of the exhaust gas, and determining, by the controller, a target discharge amount based on the target energy. The method also includes determining, by the controller, a trade-off of engine performance corresponding to one or more of the target discharge amount, an engine speed, and a driver demand power, and determining, by the controller, an allowable heater power based on the trade-off. The method further includes operating, by the controller, a heater at a heater power command that does not exceed the allowable heater power to heat the exhaust gas to the target temperature.
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