A linear actuated valve controls the flow of fluid between a first passageway and a second passageway. One or more microjets are placed around the periphery of a jet nozzle in conjunction with a porous surface acting as the impingement surface. The medium is cooled to a temperature lower than a room temperature and changes a state of the adhered substance into a fragile state. The system is passive as it does not rely on the measurement of the fuel concentration and direct injection of fuel. The speaker is received in the base. The compounds show an inhibitory effect on hormone-sensitive lipase.