Internal combustion engine emission control system has filter to trap particles, pressure drop detector, and filter cleaner using added fuel

摘要

The emission control system comprises a filter in the engine exhaust pipe, pressure drop detectors for the filter, measuring the initial pressure difference and the drop resulting from blockage by trapped particles, and a filter cleaner using fuel added to the exhaust pipe to burn the particles and restore the filter's efficiency. The filter cleaner can operate at specific time intervals, with the pressure drop measured immediately before and after each operation.