Volvo Penta

A device, circuit, and method for sensing an over-temperature condition. The device may include a plurality of thermistors connected in series with one another. The plurality of thermistors may include a first thermistor configured with a first variable resistance inversely proportional to a first temperature and a second thermistor configured with a second variable resistance inversely proportional to a second temperature. The device may include a plurality of Zener diodes, including a first Zener diode connected in parallel with the first thermistor and a second Zener diode connected in parallel with the second thermistor. The device may include one or more terminals configured to connect a control unit, which may be configured to monitor a voltage across the plurality of thermistors and the plurality of Zener diodes, in parallel with the plurality of thermistors and the plurality of Zener diodes.

Systems, apparatuses, products, and methods for arbitrary pivot point definition and vehicle rotation and/or control about the pivot point. A computer system comprising circuitry may be configured to receive first data indicative of an axis of rotation of a first vehicle. The computer system may be configured to determine a reference point for a steering maneuver of the first vehicle based on the first data. The computer system may transmit, to a steering controller of the first vehicle, a control message indicative of the reference point for the steering maneuver about the axis of rotation of the first vehicle. The reference point may be identified at a location within or external to a footprint of the first vehicle and/or within the footprint of a second vehicle.

A thermal management system for a fuel cell vehicle is provided that comprises a fuel cell system and a cooling system. The thermal management system comprises a first coolant heating circuit comprising a coolant heater configured to preheat the portion of the coolant before starting up the fuel cell system and coupled to a main cooling circuit and configured to have a portion of the coolant being selectively passed therethrough; a second coolant heating circuit comprising a cabin heater and coupled to the main cooling circuit and configured to have a portion of the coolant in the pump downstream portion being selectively passed therethrough; and a third coolant heating circuit comprising a cryogenic hydrogen storage heater configured to regulate a temperature of a cryogenic hydrogen storage of the fuel cell vehicle and coupled to the main cooling circuit and configured to have a portion of the coolant in the pump downstream portion being selectively passed therethrough.

A computer system (100; 400) for anti-fouling control for a marine structure (1), comprising processing circuitry (102; 402) configured to: obtain potential shift data (20) from a sensor (10) monitoring a control piece (5) mounted to a surface portion (6) of the marine structure (1) that is under the influence of bacterial film formation, wherein the control piece (5) comprises metal being electrically isolated from the surface portion (6); determine an ultraviolet, UV, light control action (30) based on the potential shift data (20), the UV light control action (30) comprising one or more of an intensity indicator (31) and an exposure period indicator (32); and control an UV light source (40) mounted to the marine structure (1) based on the UV light control action (30), the control causing the UV light source (40) to emit UV light (42) onto the control piece (5) and the surface portion (6).

The present disclosure relates to an emergency bilge system for a marine vessel having a bilge, comprising a seawater pump connected with a seawater cooling system for a power source and a seawater inlet, a sensor being arranged at low point at the bilge, the sensor is configured to detect a fluid present above a predetermined level at bilge, wherein a 3-way valve is arranged so as to be connected with the seawater inlet, the bilge and the seawater pump, wherein the 3-way valve is configured to selectively provide a first flow path between the seawater inlet and the seawater pump or a second flow path between the bilge and the seawater pump.

A method, device, and system for estimating impedance of a battery set associated with a battery energy storage system (BESS) are disclosed. The method may include, and the device or system, or both, may be configured for obtaining an AC signal that comprises an odd harmonic of an operating frequency of a system coupled with the BESS, injecting the AC signal into a node of the battery set, and estimating an AC impedance of the battery set based on a response of the battery set to the injected AC signal. The injected harmonic may be a third harmonic of a system coupled with the BESS, such as a utility system.

A control device for an energy storage system (ESS) system comprising an ESS and a battery management system (BMS), and a method for controlling the ESS system are provided. The method comprises obtaining an accuracy value indicative of an accuracy of a state of charge (SoC) of the ESS, and, in response to the accuracy value being below a SoC accuracy threshold, a next time the ESS is to be charged or discharged, instructing the ESS to be charged to a full charge level or to be fully discharged, and initiating a SoC calibration of the ESS. The accuracy value may be determined based on one or more SoC parameters comprising an internal resistance, a cell voltage delta, a cell voltage, a rate of change of the cell voltage delta, a charged/discharged capacity in a current cycle, a cycle start Open Circuit Voltage (OCV), a cycle end OCV of the ESS, and an operating time since a last SoC calibration of the ESS.

A lever control system (10) for a marine vessel (1), comprising: a base module (20) comprising a first wireless communication unit (22); and a lever module (30) connected to the base module (20) and rotationally movable with respect to the base module (20), the lever module (30) comprising a second wireless communication unit (32), wherein the first and second wireless communication units (22, 32) are configured for bidirectional data communication, and wherein the first wireless communication unit (22) is configured to supply power to the lever module (30) via the second wireless communication unit (32).

The present disclosure relates to a lanyard safety device for a marine helm station, comprising a base part comprising a socket, the socket having a first end, a second end and a housing extending between the first end and the second end, a circumferential inner groove is arranged in the housing, a mechanical fastening mechanism is arranged in the inner groove, a first magnet being arranged at the second end, and a plug part configured to be attached to the socket of the base part, the plug part comprising a projection protruding from a plug head, the projection comprises a circumferential outer groove, a second magnet arranged within the projection, wherein the plug part is releasable maintained in the base part by a magnetic fastening between the first magnet and the second magnet and that the mechanical fastening mechanism is attached to the outer groove, wherein the magnetic fastening doubles as a proximity sensor.

The present disclosure relates to a POD drive unit (1) for a marine vessel (100), comprising a housing (2),a first axial flux motor (3) connected with a first shaft (4) so as to rotate with a first rotation speed, a second axial flux motor (5) connected with a second shaft (6) so as to rotate with a second rotation speed, the first and second axial flux motors (3, 5) being arranged inside the housing (2), wherein the first shaft (4) and the second shaft are connected with a pitchable propeller (7), wherein a coupling (8) is arranged between the first shaft (4), the second shaft (6) and the pitchable propeller (7) for changing a pitch angle of the pitchable propeller (7) when the first rotation speed and/or second rotation speed vary in relation to the other.