Abstract:
The present invention relates to a kit for an LPG fuel for petrol run engines and in particular, a kit of electronic and hydraulic components for the realization of a dual fuelling LPG/petrol system (100) particularly suitable for outboard engines of boats navigating in waters with high salt content. Said kit includes a tube-bundle heat exchanger (10) and a pressure regulator (20) separated one from the other and made of antioxidant materials and devices. The heat exchanger (10) is provided at its end with two respective sacrificial anodes (12b, 11b) for the protection from corrosive galvanic currents and with one temperature sensor (11c) placed at one of said ends. The kit also includes a plurality of electrohydraulic LPG injectors (I) and an electronic control unit (CE) set to manage and adjust the operation of such injectors (I), of the pressure regulator (20) and of a plurality of other devices. Said kit also includes an electronic commutator (SW) set for a bilateral electrical connection with the electronic control unit (CE) and includes a switch for the commutation from one feeding mode (LPG) to another feeding mode (petrol) and vice versa.
Abstract:
A valve for a marine propulsion unit comprises a valve body (11) having an end face (13) and a wall (14) extending from the end face. An aperture (15) is defined in the end face. A valve stem (12) is moveable within and with respect to the valve body, such that, in the closed state of the valve, the valve stem closes the aperture. A maximum width (d 1 ) of the valve stem is greater than the width (d 2 ) of the aperture in the end face of the valve – so that, if the valve stem should fracture, the detached portion(s) of the valve stem will be retained in the valve body. The valve may for example be used as a cylinder drain valve in a marine propulsion unit.
Abstract:
A space-efficient fuel tank (20) for use in a small watercraft (10) powered by an outboard motor (14) is disclosed. The fuel tank (20) is securely but removably mounted to the interior of the watercraft (10) in the previously unusable space immediately underneath and adjacent the outboard motor (14) in its tilted-up condition. In the preferred embodiment, the shell of the fuel tank is generally "U"-shaped in order to optimize the storage space efficiency of the fuel tank (20) when it is positioned in the space underneath the outboard motor. The fuel tank (20) is securely mounted to the watercraft by brackets (24, 26) which adjustably attach to the top of the fuel tank (20) and extend out over the back portion of the watercraft near the outboard motor (14) to secure the tank in position immediately underneath and adjacent to the outboard motor (14).