Abstract: A humid air system (HAS) for reducing NOx emissions of an LPG-powered forklift and other heavy equipment is disclosed. A humid air system (HAS) uses distilled water and heat of exhaust to generate steam, injected at the intake air of the engine to increase humidity and reduce temperature and NOx emission. The system includes a pipe with a coiled-tube insert that is attached to the exhaust. A water pump connected to a solenoid valve supplies distilled water from a container to the exhaust coil, generating steam that is fed to a mixing box at the engine air intake in order to increase intake air humidity. A feedback control system controls the solenoid valve opening to adjust the water flow rate for maintaining humidity level between 90% to saturation.

Abstract: A humid air system (HAS) for reducing NOx emissions of an LPG-powered forklift and other heavy equipment is disclosed. A humid air system (HAS) uses distilled water and heat of exhaust to generate steam, injected at the intake air of the engine to increase humidity and reduce temperature and NOx emission. The system includes a pipe with a coiled-tube insert that is attached to the exhaust. A water pump connected to a solenoid valve supplies distilled water from a container to the exhaust coil, generating steam that is fed to a mixing box at the engine air intake in order to increase intake air humidity. A feedback control system controls the solenoid valve opening to adjust the water flow rate for maintaining humidity level between 90% to saturation.

Abstract: A CFD-based diagnostic system can be used as a non-invasive diagnostic and monitoring tool for ECAC, central airway obstruction diseases, OSA and airway stenosis. The process is expected to reduce the time of diagnosis, number of tests, and hospitalization time.