METHOD OF HYDRAULICALLY CONTROLLING A MARINE SPEED REDUCING AND REVERSING MACHINE IN CRASH ASTERN OPERATION

摘要

In carrying out a crush-go-astern operation for switching operating means (2a) of a hydraulic clutch mechanism (100) provided to a marine reduction and reverse gear (1) from a forward setting (F) to a reverse setting in a stroke so as to abruptly stop in traveling ahead, a propeller speed (PN) is detected in neutral (N) halfway through the switching and initial fitting pressure (Po) of a reverse driving clutch (90) is calculated by using a map of the initial fitting pressure (Po) of reverse clutch pressure (Pr) formed according to the propeller speed based on a ship load (SL) in advance before switching to the reverse setting (R), the reverse driving clutch (90) is set at the calculated initial fitting pressure (Po) when the operating means is switched to the reverse settirig (R), and then the reverse clutch pressure (Pr) is increased to a maximum value (Pm) as an engine speed (EN) increases.