SCR Ventilation Pressure Stabilization Control

The patent replaces the traditional mechanical throttle orifice plate with an electric control valve system. The control valve can rapidly open and close to achieve fast ventilation, while the electric actuation provides precise control and better sealing performance compared to mechanical throttle mechanisms.

The patent introduces dynamic control of the ventilation process by using controllable valves that can adjust their opening degree and timing. The system dynamically controls the intake and exhaust valves during engine operation to optimize ventilation speed and sealing, rather than using a fixed mechanical orifice.

The patent implements periodic or demand-based ventilation control instead of continuous compressed air purging. The control system activates the ventilation valves only when needed based on operational conditions, thereby maintaining necessary ventilation while significantly reducing continuous air consumption and improving system stability.

The patent employs a control system that monitors system conditions and provides feedback to regulate valve operation. This closed-loop control ensures ventilation is maintained only when necessary, optimizing air consumption and system stability by adjusting valve timing and duration based on real-time pressure and operational feedback.

The patent designs control valves that serve multiple functions: rapid ventilation, pressure control, and sealing. By using multi-functional control components, the system achieves fast ventilation speed without proportionally increasing device complexity, as the same valves perform multiple critical functions.

The patent combines the intake and exhaust control functions into an integrated control system that manages both valves coordinate. This merging of control functions reduces overall system complexity compared to having separate independent control systems for each valve, while still maintaining precise pressure control and fast ventilation response.