Abstract: The invention relates to fuel system for gas driven piston engine in a marine vessel, which gas is stored in at least one fuel storage tank in the vessel as liquefied gas. The fuel feeding system comprises a separate fuel feed tank in which the gas is in liquid phase and at elevated pressure. The gas is also in liquid phase in the fuel storage tank, in which, however, prevails only the hydrostatic pressure caused by the liquid gas.

Abstract: A fuel injection pump for a piston engine, the pump comprising a cylinder element having a pressure plenum provided with an outlet chamber for removing pressurized fuel from the pressure plenum, a piston arranged to reciprocate inside the pressure plenum, an inlet chamber arranged outside the pressure plenum and at least one inlet channel arranged between the pressure plenum and the inlet chamber. At least one fill channel provided with a non-return valve is arranged between the pressure plenum and the inlet chamber, the valve allowing fuel flow from the inlet chamber to the pressure plenum but preventing flow from the pressure plenum to the inlet chamber.

Abstract: The invention relates to an actuator assembly for controlling fuel injection of a large combustion engine, especially a diesel engine, including an electric motor (6) acting on a control shaft (8) arranged to control the fuel injection and actuator control means (2,3) provided with an electric power supply (4,5) for controlling the electric motor (6). According to the invention the actuator assembly is provided with backup power in the form of capacitor power (12) arranged to provide power for the actuator control means (2,3) in case of loss of power or power failure of the electric power supply (4,5) so as to enable the actuator control means (2,3) to control the electric motor (6) to drive the control shaft (8) to a predefined safe position.

Abstract: A vibration damper comprising a body part via which the damper can be fastened to the object to be dampened, an oscillating piece movably arranged in the space of the body part and fastened by at least one spring to the body part, the oscillating piece consisting of more than one part, removably fastened to each other. The invention also relates to a method of producing a vibration damper and an arrangement of reducing the vibration in a piston engine.

Abstract: System (10) for controlling a vessel, which vessel is provided with: propulsion means (40) for propelling the vessel, directional means for determining the direction in which the vessel is propelled, which system is provided with: speed regulating means (32, 36) for influencing the propulsion supplied by the propulsion means, steering means (30, 34) for influencing the directional means, at least one or more navigational aids (28) which provide those who are operating the speed regulating means and/or the steering means with data relating to the navigation, in which the system is provided with means by which the data (14, 16, 22, 24) coming from the navigational aid (28) is used to determine areas where the vessel must not go, and in which the speed regulating means or the steering means or both are provided with limiters (32, 36) by means of which the operation of the abovementioned means is rendered difficult if such operation would lead to the vessel moving in the direction of the abovementioned areas.

Abstract: An injection valve arrangement which is to be connected with a common rail of a fuel feeding system of a combustion engine comprises a valve body. A first valve needle and a first piston arrangement functionally coupled thereto and a second valve needle and a second piston arrangement functionally coupled thereto are inside the valve body. The needle valves are arranged operationally in series so that the first needle valve is connected to feed pressure of the common rail and is arranged to open always first. The second needle valve controls the injection of the fuel into a cylinder of the engine.

Abstract: A method is proposed for operating a four stroke diesel engine, in which method water is injected into a cylinder (2) in which a reciprocable piston (3) is arranged, and which cylinder (2) has at least one outlet (7) for conducting off exhaust gases as well as at least one intake (8) for supplying air, with the outlet (7) being closed during the exhaust stroke of the piston (3) so that the outlet (7) is already closed before the piston (3) reaches the upper idle dead center at the end of the exhaust stroke, and with water being injected into the cylinder (2) when the piston (3) is located in the region of the upper idle dead center.

Abstract: The electromagnetic valve comprises a valve housing, a valve slider and two electromagnets. The valve slider is displaceably arranged in a through-bore in the housing. The through-bore and the valve slider are provided with a hard coating in order to increase the number of switching movements.