A control system and control method for a vehicle, engine

By working in tandem with the monitoring and control module and the cylinder deactivation control module, the operating mode of the diesel engine is optimized, solving the problems of exhaust temperature management and nitrogen oxide emissions. This achieves rapid heating and reduced fuel consumption, meeting stringent emission regulations.

CN117329009BActive Publication Date: 2026-07-24FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Application Number
CN202311389592.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-24
Publication Date
2026-07-24
Estimated Expiration
2043-10-24

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively control nitrogen oxide (NOx) emissions in diesel engines and meet stringent emission regulations, and exhaust aftertreatment devices have inadequate temperature management efficiency.

Method used

By employing a monitoring and control module and a cylinder deactivation control module, the system monitors the SCR temperature and coolant temperature to control the operating status of the exhaust throttle valve and the cylinder deactivation module, thereby achieving exhaust temperature control, mode maintenance, and emission control. This optimizes the engine's operating mode to increase exhaust gas temperature and reduce fuel consumption.

Benefits of technology

It significantly increases the temperature of the exhaust aftertreatment device, reduces engine fuel consumption, and effectively controls nitrogen oxide emissions, meeting stringent emission regulations.

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Abstract

The application discloses a kind of vehicle, engine control system and control method, the control system includes: monitoring control module, cylinder deactivation control module and engine;Engine includes engine body, exhaust throttle valve, temperature detection module and aftertreatment device;Aftertreatment device includes sequentially connected first SCR, DOC, DPF and second SCR;Temperature detection module is used to detect the temperature of first SCR, the temperature of second SCR and the temperature of coolant in engine;Cylinder deactivation control module is used to control part of cylinder in engine body to stop working when working;Monitoring control module is used to control engine to enter exhaust temperature control mode when the temperature of second SCR is less than first preset temperature, for controlling engine to enter maintaining mode when the temperature of second SCR is greater than or equal to first preset temperature and the temperature of second SCR is less than second preset temperature.The application can reduce the fuel consumption of engine, and also can quickly improve the temperature of aftertreatment device.
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