A method and a system for controlling a propulsive power output applied to a propeller shaft of a ship. The ship includes the propeller shaft and a propulsive power source connected to the propeller shaft. A control signal for producing with the propulsive power source a propulsive power is varied within an interval limited by an upper control limit value and a lower control limit value. If a current value of an operational parameter of the ship reaches a first parameter limit value, the upper control limit value is reduced. Thus, the propulsive power source may be prevented from applying a too high power output to the propeller shaft, which would be unfavourable for the ship.

A method and a system for controlling a propulsive power output applied to a propeller shaft of a ship. The ship includes the propeller shaft and a propulsive power source connected to the propeller shaft. A control signal for producing with the propulsive power source a propulsive power is varied within an interval limited by an upper control limit value and a lower control limit value. If a current value of an operational parameter of the ship reaches a first parameter limit value, the upper control limit value is reduced. Thus, the propulsive power source may be prevented from applying a too high power output to the propeller shaft, which would be unfavourable for the ship.

An electronic control system (30) for a turbopropeller engine (1) having a gas turbine (2, 4, 5, 6) and a propeller (7), coupled to the gas turbine, the control system (10) having a propeller control unit (14) and a turbine control unit (15) to jointly control engine power output based on an input request (PLA), wherein the propeller control unit (14) has a first reference generator (16), to determine a reference propeller speed (N.sub.pref) based on the input request (PLA), and a first regulator (19), to regulate a propeller speed (N.sub.p). The propeller control unit (14) has a reference correction stage (31) to apply a correction to the reference propeller speed (N.sub.pref) and generate thereby a corrected reference propeller speed (I), and the first regulator (19) regulates the propeller speed (N.sub.p) based on the corrected reference propeller speed (I) to achieve optimized efficiency.

An electronic control system (30) for a turbopropeller engine (1) having a gas turbine (2, 4, 5, 6) and a propeller (7), coupled to the gas turbine, the control system (10) having a propeller control unit (14) and a turbine control unit (15) to jointly control engine power output based on an input request (PLA), wherein the propeller control unit (14) has a first reference generator (16), to determine a reference propeller speed (N.sub.pref) based on the input request (PLA), and a first regulator (19), to regulate a propeller speed (N.sub.p). The propeller control unit (14) has a reference correction stage (31) to apply a correction to the reference propeller speed (N.sub.pref) and generate thereby a corrected reference propeller speed (I), and the first regulator (19) regulates the propeller speed (N.sub.p) based on the corrected reference propeller speed (I) to achieve optimized efficiency.

A recreational vehicle includes a seatbelt sensor configured to detect when a seatbelt is in an engaged position or a disengaged position and an engine control module in communication with the seatbelt sensor to automatically limit a maximum speed of the vehicle to a reduced maximum speed limit upon detection of the seatbelt is in the disengaged position.

A recreational vehicle includes a seatbelt sensor configured to detect when a seatbelt is in an engaged position or a disengaged position and an engine control module in communication with the seatbelt sensor to automatically limit a maximum speed of the vehicle to a reduced maximum speed limit upon detection of the seatbelt is in the disengaged position.

The present disclosure relates to a method (1) and an apparatus (10) for adjusting flow properties of a propeller (103) of a propulsion system (100) for watercrafts (1000), in particular for boats and ships, depending on the operation state, comprising the steps of determining the operation state (2) of the propulsion system (100), wherein in the propulsion system (100) either a thrust state or a generator state, in particular a hydrogeneration state for generating energy by hydrogeneration, is present, and adjusting the flow properties (3) of the propeller (103) based on the determined operation state.

The present disclosure relates to a method (1) and an apparatus (10) for adjusting flow properties of a propeller (103) of a propulsion system (100) for watercrafts (1000), in particular for boats and ships, depending on the operation state, comprising the steps of determining the operation state (2) of the propulsion system (100), wherein in the propulsion system (100) either a thrust state or a generator state, in particular a hydrogeneration state for generating energy by hydrogeneration, is present, and adjusting the flow properties (3) of the propeller (103) based on the determined operation state.

A recreational vehicle includes a seatbelt sensor configured to detect when a seatbelt is in an engaged position or a disengaged position and an engine control module in communication with the seatbelt sensor to automatically limit a maximum speed of the vehicle to a reduced maximum speed limit upon detection of the seatbelt is in the disengaged position.

A recreational vehicle includes a seatbelt sensor configured to detect when a seatbelt is in an engaged position or a disengaged position and an engine control module in communication with the seatbelt sensor to automatically limit a maximum speed of the vehicle to a reduced maximum speed limit upon detection of the seatbelt is in the disengaged position.