Abstract: A method of driving an apparatus, comprising, piping water derived from an underwater seep under such conditions that the piped water is arranged to flow under its own pressure to the apparatus to drive the apparatus.

Abstract: A high vapor pressure liquid fuel (e.g. LPG) injection system is provided that keeps the fuel liquid at all expected operating temperatures by use of a high pressures pump capable of at least 2.5 MPa pressures. The fuel can be injected directly into the cylinder or into the inlet manifold of an engine via axial or bottom feed injectors and also could be mixed with a low vapor pressure fuel (e.g. diesel) to be injected similarly. The fuel, mixed or unmixed, can be stored in an accumulator under high pressure assisting in keeping the engine running during fuel changeovers and injection after a period of time as in re-starting the engine. The same injectors can be used to inject any of the fuels or mixtures of them.

Abstract: A liquid fuel injector connected to the fuel line manifold and return line manifold by plastic tubing, standard petrol fittings, or high pressure hosing so aiding ease of installation, each injector having a separate inlet and return line to assist in fuel temperature control. The injectors are designed to assist in keeping the temperature of the fuel as low as possible with the injector coil not being cooled by the fuel, but by ambient air.

Abstract: A high vapor pressure liquid fuel (e.g. LPG) injection system is provided that keeps the fuel liquid at all expected operating temperatures by use of a high pressures pump capable of at least 2.5 MPa pressures. The fuel can be injected directly into the cylinder or into the inlet manifold of an engine via axial or bottom feed injectors and also could be mixed with a low vapor pressure fuel (e.g. diesel) to be injected similarly. The fuel, mixed or unmixed, can be stored in an accumulator under high pressure assisting in keeping the engine running during fuel changeovers and injection after a period of time as in re-starting the engine. The same injectors can be used to inject any of the fuels or mixtures of them.

Abstract: A fuel injector is actuated by cylinder compression pressure acting against the exposed face (31) of piston means (30, 35) to compress fuel in high pressure chamber (45) in injector body (10). The piston means (30, 35) moves against spring (36) and controllable fuel pressure in low pressure chamber (37). The high pressure chamber (45) communicates with injection orifice (68) via delivery chamber (65) and non-return delivery valve (56). Fuel delivery is regulated by varying fuel pressure in low pressure chamber (37) and various means are disclosed for controlling this pressure.