Abstract: The invention relates to a method and a device (50) for inspecting a running surface (35) of a cylinder liner (25) of a combustion engine (10) comprising an inspection tool (65), a control device (55) and connection means (60) for power supply and transmission of measuring data and control signals. The inspection tool (65) comprises a bearing rail (70) and mounted thereon a rotary table (80) and tools (90, 96) for measuring the inner diameter (d) and running surface (35) of the cylinder liner (25) and for visual inspection of the surface condition. The inspection tool (65) has a size that allows its introduction into the cylinder liner (25) through an aperture (30) in the cylinder liner (25) to be inspected. The invention is particular suitable for the inspection of a cylinder liner (25) of a reciprocating piston combustion engine (10).

Abstract: The present invention relates to a preheating arrangement in a fuel cell apparatus, the fuel cell apparatus comprising at least a fuel cell unit having an anode side and a cathode side with an electrolyte therebetween, the fuel cell apparatus having at least a fuel inlet to the anode side and an oxygen-containing air inlet to the cathode side as well as a sulphur removal unit and a fuel modifying unit and an afterburner for combustion the exhaust gases from the anode and/or cathode side. According to the invention, the afterburner is provided with a separate fuel inlet channel for introducing fuel to the afterburner during the start-up phase of the fuel cell apparatus and that at least a part of the exhaust gases formed in the combustion of the separately fed fuel is arranged to be directed from the afterburner for heating at least the sulphur removal unit and/or the fuel modifying unit during the start-up phase.

Abstract: The invention relates to a machinery arrangement of a marine vessel, which machinery arrangement comprises an internal combustion engine (1), a heat recovery device (2) for recovering waste heat from the exhaust gas of the internal combustion engine (1), a scrubber unit (3) for scrubbing the exhaust gas, and a separate heating system (4) for producing heat. The machinery arrangement further includes a reheating device (30) in flow connection with the heat recovery device (2) for reheating the exhaust gas from the scrubber unit (3) or for dumping excess heat.

Abstract: A gas engine has a first fuel feed system, a second fuel feed system and a third fuel feed system. The gas engine is operated by introducing combustion air into a combustion chamber of the engine. In a first mode of operation of the engine, gaseous fuel is added to the combustion air via the first fuel feed system and ignition fuel is injected into the mixture of gaseous fuel and combustion air via the second fuel feed system. In a second mode of operation of the engine, gaseous fuel is added to the combustion air via the first fuel feed system and ignition fuel is injected into the mixture of gaseous fuel and combustion air via the third fuel feed system.

Abstract: The invention relates to a barge arrangement comprising a barge unit with a first end (11) and a second end (12) and a tug unit provided with a propulsion unit, which barge unit is adapted to receive the tug unit at one end. In order to achieve an efficient vessel combination for loading, transport and unloading of cargo the barge unit (102) is adapted to receive a first tug unit (2) at its second end (12) in order to be pushed by the first tug unit (2) with the first end (11) of the barge unit (1) in a forward direction (F) of motion. Further, the barge unit (101) is adapted to receive a second tug unit (3) at its second end (12) in order to be pulled by the second tug unit (3) with the second end (12) of the barge unit (1) in the forward direction (F) of motion.

Abstract: A method for controlling the operation of a solenoid (14), in which solenoid the movement of the plunger is caused by bringing electric energy to the solenoid, whereby an electric current flows through the solenoid, the method comprising the following steps. defining a model (6) for describing the current signal of the solenoid at certain time intervals from the activation moment of the solenoid onwards, measuring the true current signal (7) of the solenoid at time intervals corresponding with the model, defining a residual signal (8), which is the remainder between the signal of the model (6) and the true current signal (7), and performing a threshold analysis (25) for the residual signal.

Abstract: An indicator arrangement according to the invention also comprises a resistor (4) the first end of which is connected to between a passive acceleration sensor (1) and a filtering means (2) and the other end is connected to a basic voltage level. An output (5) is also connected to the connection of the first end of the resistor. The indicator arrangement also comprises a direct voltage source (3) the first end of which is connected to a passive acceleration sensor (1) while the other end is connected to a basic voltage level. Voltage can be detected from the output (5) of the indicator arrangement for detecting a fault in the indicator arrangement.

Abstract: A measurement sensor includes an elongated sensor part at the first end of which is the electrical connection of the sensor part and at the second end of which is the sensor end of the sensor part. A first sleeve part is arranged around the sensor part for attaching the measurement sensor to the object to be measured and for supporting the sensor part. A second sleeve part extends into the first sleeve part, the second sleeve part being rotatably arranged in connection with the first sleeve part. The sensor part has an external thread and the second sleeve part has an internal thread, the external thread of the sensor part and the internal thread of the second sleeve part are connected to each other so that when the second sleeve part is rotated in relation to the sensor part, the sensor part moves in the direction of its longitudinal axis in relation to the first and second sleeve parts.

Abstract: The present invention relates to fuel injection in internal combustion engines and to fuel rate shaping. Especially, the invention relates to combustion engines utilizing heavy fuel oil as a fuel. In the body of the device there is arranged a chamber, in which a movable piston is arranged dividing the chamber into a first main volume and a second main volume, the volumes of which depend upon the position of the piston. Moreover, the device comprises at least one auxiliary volume, which can be united with the main volumes. The auxiliary volume can be filled with the fuel entering the device through the first main volume by utilizing the piston motion. By establishing a connection from the auxiliary volume to the second main volume a fuel flow to the second main volume is allowed.

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: A fuel injection arrangement for a piston engine, the arrangement comprising an injector nozzle (1) for injecting fuel into the combustion chamber (6) of the cylinder A Theological actuator (15) is arranged in connection with the injector nozzle (1), the actuator comprising a space (18) containing Theological fluid and an apparatus (19, 20) by means of which the viscosity of the Theological fluid can be changed for controlling the fuel injection.

Abstract: A control arrangement for a fuel injection apparatus of an internal combustion engine, the fuel injection apparatus comprising at lest two fuel injector nozzles, the injection action of which is controllable via a solenoid, and at least two control units arranged to control the solenoids controlling the injection action. According to the invention, each injector nozzle is provided with a first and second solenoid and the first and second solenoid are in connection with a different control unit.

Abstract: Method for treating a crank pin of a crank shaft. In the method hardness of the crank pin surface is measured and when the hardness is over a predetermined limit value, depth of the hard spot is measured. Heat treatment parameters are determined at least on the basis of the depth measurement and the hard spot is heat treated. During the heat treatment the hard spot is heated by an induction heating device.

Abstract: A control arrangement for a gas exchange valve in a piston engine adapted between the camshaft of the engine and the valve mechanism, which control arrangement comprises a body part and a chamber arranged therein, into which chamber a connection for hydraulic medium opens and in which a piston device is arranged in force transmission connection with the camshaft and the valve mechanism. The connection for hydraulic medium opens to a space in the chamber, which space increases as the piston device moves in the opening direction of the valve, whereby hydraulic medium is arranged to flow into the space, when the valve is being opened, and out of the space, when the valve is being closed.

Abstract: A spark plug for an internal combustion engine, the spark plug having at least two electrodes, in which the electrodes are formed of a first part made of a substrate material and a surface part more durable than the substrate material. The surface part of the spark plug is joined to the first part via an intermediate part making use of explosion welding. The method also relates to a method for producing a spark plug for an internal combustion engine, the spark plug having at least two electrodes.

Abstract: A gas engine plant that includes a combustion engine adapted to combust gaseous fuel receives fuel containing hydrocarbons, reforms the fuel by cracking the heavier hydrocarbons in the fuel while minimizing cracking of methane, and feeds the reformed fuel in gaseous form to the combustion engine.

Abstract: A marine vessel power generation system comprising a conventional machinery arrangement, such as an internal combustion engine (2) and a generator (3), a propulsion system, and a main switchboard (6). In order to provide an environmental friendly power generation system, when the marine vessel enters, leaves or is in port, said system is provided with an H2O operated power generation arrangement (8) for generating H2O from seawater in order to produce electrical energy.

Abstract: A control arrangement for a fuel injection apparatus of an internal combustion engine, the fuel injection apparatus comprising at lest two fuel injector nozzles, the injection action of which is controllable via a solenoid, and at least two control units arranged to control the solenoids controlling the injection action. According to the invention, each injector nozzle is provided with a first and second solenoid and the first and second solenoid are in connection with a different control unit.

Abstract: A marine vessel operated with gaseous fuel having at least one gas powered engine, which vessel is provided with a fuel tank arrangement in which the fuel is stored in liquid phase, in which vessel the engine is positioned in an engine room which is provided with an engine room casing extending from the engine room to the exterior of the vessel. The fuel tank arrangement is arranged in vicinity of the engine room casing.

Abstract: A measurement sensor includes an elongated sensor part at the first end of which is the electrical connection of the sensor part and at the second end of which is the sensor end of the sensor part. A first sleeve part is arranged around the sensor part for attaching the measurement sensor to the object to be measured and for supporting the sensor part. A second sleeve part extends into the first sleeve part, the second sleeve part being rotatably arranged in connection with the first sleeve part. The sensor part has an external thread and the second sleeve part has an internal thread, the external thread of the sensor part and the internal thread of the second sleeve part are connected to each other so that when the second sleeve part is rotated in relation to the sensor part, the sensor part moves in the direction of its longitudinal axis in relation to the first and second sleeve parts.