20
Design concepts of propulsion systems
There are different types of engines, reverse gears and front drive systems, depending on the available space
and other requirements during the installation.
Follow the manufacturer’s instructions when installing components and equipment not supplied by Volvo Penta.
Reverse gear, various types
Coaxial
The engine’s crankshaft and the reverse gear’s out-
put shaft are on the same level. The propeller shaft
and crankshaft are in-line.
The engine and reverse gear form one unit. The com-
pressive forces from the propeller are absorbed by an
axial bearing in the reverse gear.
Drop centre, parallel
The engine’s crankshaft and the reverse gear’s out-
put shaft are parallel. The output shaft is on a lower
level than the crankshaft.
The engine and reverse gear form one unit. The com-
pressive forces from the propeller are absorbed by an
axial bearing in the reverse gear.
Coaxial down angle
The extension of the engine crankshaft centre line is
angled in the reverse gear. The angle of the propeller
shaft deviates from the angle of the crankshaft.
The engine and reverse gear form one unit. The com-
pressive forces from the propeller are absorbed by an
axial bearing in the reverse gear.
Drop centre, down angle
The engine’s crankshaft and the reverse gear’s out-
put shaft are on different levels. The angle of the pro-
peller shaft deviates from the angle of the crankshaft.
The engine and reverse gear form one unit. The com-
pressive forces from the propeller are absorbed by an
axial bearing in the reverse gear.
Summary of Contents for D11 series
Page 1: ...Marine Propulsion Diesel Engines Installation 1 1 D E D5 D16 series ...
Page 2: ......
Page 208: ...206 References to Service Bulletins Group No Date Concerns ...
Page 209: ...207 Notes ...
Page 210: ...208 Notes ...
Page 212: ...7748655 English 11 2007 ...