Man B&W L35MC6-TII User Manual

MAN B&W 5.18
Page 4 of 8
MAN Diesel
198 46 953.5MAN B&W S70MC, S70MC-C/ME-C/ME-GI, L70MC-C/ME-C,
S60MC, S60MC-C/ME-C/ME-GI/ME-B, L60MC-C/ME-C,
S50MC, S50MC-C/ME-C/ME-B, S46MC-C/ME-B, S42MC,
S40MC-C/ME-B, S35MC, S35MC-C/ME-B, L35MC, S26MC
If deviation occurs, a proportional valve is actu-
ated. Hereby high pressure oil is fed to one or the
other side of the servo piston, via the oil distribu-
tor ring, until the desired propeller pitch has been
reached.
The pitch setting is normally remote controlled,
but local emergency control is possible.
Fig. 5.18.05: Servo oil system for MAN Diesel’s Alpha VBS type CP propeller
178 22 384.1
Servo oil system for VBS type CP propeller
The design principle of the servo oil system for
MAN Diesel’s Alpha VBS type CP propeller is
shown in Fig. 5.18.05.
The VBS system consists of a servo oil tank unit,
the Hydraulic Power Unit, and a coupling flange
with electrical pitch feedback box and oil distribu-
tor ring.
The electrical pitch feedback box continuously
measures the position of the pitch feedback ring
and compares this signal with the pitch order sig-
nal.
Hydraulic Power Unit
Stern
tube oil
tank
Oil tank
forward
seal
Pitch
order
Servo
piston
Lip ring seals
Hydraulic
pipe
Pitch
feedback
Drain
tank
Propeller shaft
Oil distribution
ring
Stern
tube
Monoblock
hub
Zinc
anode
MM
PSL
PSL
PAL
PALPAHPI
M
M
PI
LAL
TAH
TI

Man B&W L35MC6-TII Specifications

General

Brand	Man
Model	B&W L35MC6-TII
Category	Engine
Language	English