Emergency reversing controller for marine medium-speed diesel engine propulsion power plant

Abstract

The invention discloses an emergency reversing controller for a propulsion power device of marine medium speed diesel engine. A mathematical model of the boat-machine-oar is established in the emergency reversing controller according to the technical parameters of the propeller of the medium-speed diesel engine marine; when in an emergency change of direction, through collecting the real-time parameters including ship speed, loading and sea condition, and using the model to calculate and output the symbol of allowing the main engine to back up to the remote control device, a reliable basis andan implementation method are provided to control emergency direction change and the time and the distance of emergency braking of marines are shortened, and the emergency direction change is optimized, which can solve problem that emergency reversing of medium-speed diesel engine power ships, including engine shut-out and untimely astern response. The emergency reversing controller for propulsionpower device of marine medium speed diesel engine can be successfully operated on the premise that the diesel engine is not flameout, which can make the propeller reverse to make the ship brake fast,and strive for the precious time for emergency avoidance.

Description

technical field [0001] The invention relates to the field of ship power device control, and is particularly suitable for a diesel engine propulsion power device with a reverse clutch gearbox, belonging to the technical field of ship power device automatic control. Background technique [0002] The propulsion power plant of the ship's medium-speed diesel engine is usually driven by the diesel engine through the reverse clutch reduction gearbox to drive the propeller. If there is an emergency during the ship’s navigation and it is necessary to reverse the car in an emergency, the main engine will first slow down to the disengagement speed, the gear box will disengage, the main engine will run at idle speed, and the propeller will be in the state of a water turbine. If it is very large, the output torque of the main engine is not enough to overcome the frictional moment, propeller resistance moment and moment of inertia of the shaft and propeller, and the main engine will be ex...

AI Technical Summary

Problems solved by technology

Obviously, this emergency reversing control method, on the one hand, when the speed is relatively low, the load is less and the sea conditions are good, it will cause too long waiting time for reversing and platooning, delaying the opportunity to avoid danger; on the other hand, when the speed is relatively high, When the load is heavy and the sea conditions are bad, it may cause the diesel engine to simmer, endangering the safety of life and property of the ship

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