摘要:
A method for controlling the exit of exhaust gases from an engine which is used to power an underwater propeller drive arranged at the hull bottom of a boat is provided. According to the method exhaust gases are allowed to flow from the engine through an exhaust channel and exit through a first underwater exhaust outlet in the underwater propeller drive. According to the method, if the engine is running and the transmission of the propeller drive is in neutral position, a second underwater exhaust outlet is opened for letting exhaust gases in the exhaust channel exit in a position closer to the hull bottom of the boat than the first underwater exhaust outlet.
摘要:
A method for controlling the exit of exhaust gases from an engine which is used to power an underwater propeller drive arranged at the hull bottom of a boat is provided. According to the method exhaust gases are allowed to flow from the engine through an exhaust channel and exit through a first underwater exhaust outlet in the underwater propeller drive. According to the method, if the engine is running and the transmission of the propeller drive is in neutral position, a second underwater exhaust outlet is opened for letting exhaust gases in the exhaust channel exit in a position closer to the hull bottom of the boat than the first underwater exhaust outlet.
摘要:
A battery charging system and a method for a increasing endurance of a high voltage battery in a hybrid electric vehicle comprising: a high voltage battery (103) for vehicle propulsion; a generator (102) for charging said high voltage battery; a DC/DC converter (104) for converting a high voltage to a low voltage; a low voltage battery (106) charged with said low voltage; and an alternator (112), driven by an engine (101), and connected with said low voltage battery in parallel with said voltage converter; and wherein the method is characterized in the steps:•registering a parameter, where said parameter is at least one of a: -state of charge of said high voltage battery, -energy inflow/outflow to/from said high voltage battery to said vehicle drive motor or said generator; •controlling said low voltage in dependence of said registered parameter.
摘要:
The invention involves a method for corrosion protection in a marine construction (1) comprising a plurality of metal elements (M, A, P, M1) and at least one reference electrode (R1, R2, R3) being at least partly immerged in water, the metal elements (M, A, P, M1) comprising an anode (A, P) and a metal part (M), the anode (A, P) being provided for corrosion protection of the metal part (M), the method comprising measuring an electric potential (VRM1, VRM2, VRM3) of the metal part (M) with the reference electrode (R1, R2, R3) as a ground reference. At least one of the metal elements (M, A, P, M1) and at least one of the at least one reference electrode (R1, R2, R3) are connected to a DC electrical power outlet (52) so as to allow an electrical regeneration current (IRM) through an electrical circuit comprising the at least one of the metal elements (M, A, P, M1), the at least one of the at least one reference electrode (R1, R2, R3) and the electrolyte (W), so as for the reference electrode (R1, R2, R3) to be anodized.
摘要:
A method is provided for corrosion protection in a marine construction, such as a marine surface vessel or a marine structure, the marine construction including at least one metal element and a sacrificial anode adapted to be at least partly immerged in an electrolyte in the form of water, in which the marine construction is at least partly immerged, the at least one metal element including a metal part, the sacrificial anode being provided for corrosion protection of the metal part. The method includes connecting at least one of the at least one metal element and the sacrificial anode to a DC electrical power outlet so as to allow an electric de-passivation current through an electrical circuit including the sacrificial anode, the metal element and the electrolyte.
摘要:
A gear housing for an aquatic vessel is adapted to be attached at an attachment site to an underside of a hull of the aquatic vessel. The gear housing includes at least one weakened region adapted to yield when the gear housing is rotated at the attachment site following an impact. A breakaway safety system includes such a gear housing, and a fracturable member for attaching the gear housing to the hull at the attachment site, wherein the weakened region is adapted to yield such that the fracturable member fractures. An aquatic vessel includes such a gear housing or such a breakaway safety system.
摘要:
The invention involves a method in a corrosion protection system for protecting a first and a second metal part (Ml, M2) of a marine construction (1). The method comprises controlling electrical currents (II, 12) through electrical circuits, comprising respective anodes (Al, P2), the respective metal parts (Ml, M2) and an electrolyte (W), at least partly based on measured electrical potentials (VRMl, VRM2) of the respective metal parts (Ml, M2) with an reference electrode (R, Rl, R2) as a ground reference. The method further comprises repetitively performing the steps of controlling the electrical currents (II, 12) so as to be reduced or eliminated, measuring the electrical potentials (VRMl, VRM2) while said electrical currents (II, 12) are maintained reduced or eliminated, and, after measuring the first and second electrical potentials (VRMl, VRM2), controlling the electrical currents (II, 12) so as to be increased or reestablished.
摘要:
There is provided a breakaway safety system for a vessel (10). The vessel (10) includes: (a) a hull (20); (b) one or more engine arrangements (30) supported by the hull 20); and (c) one or more propeller extensions (50) mounted to the hull (20) and coupled to receive motive power from the one or more engine arrangements (30) in operation. The safety system includes: one or more sensors mounted to the vessel (10) for measuring operating parameters of the vessel (10) and generating one or more corresponding input signals; a control unit (250) for receiving the one or more corresponding input signals, and to process the one or more input signals to generate at least one control output (Q, A); one or more fracturable regions (190) for mounting the one or more propeller extensions (50) to the at least one hull (20); and one or more fracturing devices (200, 300, 400, 500) operable to fracture the one or more fracturable regions (190) for jettisoning associated one or more propeller extensions (50) in an event that the control unit (250) detects a potentially hazardous impact event and activates its at least one control output (Q, A) accordingly.