Hybrid Installation; Introduction; Engine Support; Flexible Coupling - Vetus EP2200K Instrucciones De Instalación

10 Hybrid installation

10.1 Introduction

Follow the installation instructions from the corresponding man-
ual for the diesel engine.
The diesel engine of a hybrid installation may not be of unlimit-
ed size, since the torque must be transmitted to the propeller
shaft via the electric motor shaft.
The maximum torque that the electric motor shaft may transmit
is 80 Nm (M max).
The maximum engine power is dependent on the reduction of
the gearbox and the speed at which the engine delivers its max-
imum power.
x 2 x π x n
P = M
max. max.
N.B.: P in W, M in Nm and n in rev/sec
Example:
The gear box has a reduction of 2:1 and the engine speed (n
motor) = 3000 rev/min
The propeller shaft speed are therefore: 3000 / 2 = 1500
rev/min
The propeller shaft speed in rev/sec are then:
1500 / 60 = 25 rev/sec
The engine may then deliver maximum power of
= 80 x 2 x π x 25 = 12560 Watt
P
max.
= 12,56 kW (= 17 hp)

10.2 Engine support

Bear the following in mind when preparing the engine support:
• the diesel engine must be fitted directly in front of the electric
motor
• the power shaft from the reverse clutch must lie directly in
line with the shaft from the electric motor.

10.3 Flexible coupling

Connect the power shaft (flange) of the gear box with the shaft
end on the front of the electric motor using a flexible coupling:
Vetus Bullflex type 1 for shaft ø 20 mm.

10.4 Propeller

Consult table 2 on page 61 to select the correct propeller.
Table 2 gives propeller dimensions which are the best possible
for use with the Vetus diesel engine M2C5 using a reverse
clutch with reduction of 2:1.
N.B. The maximum power of the diesel engine is greater than
that required to allow the ships (with waterline length and dis-
placement as shown in the table) to reach the hull speeds
given.
18
propeller shaft
By these propeller dimensions the electric motor will have to
supply maximum power of 2.2 kW at ca. 960 rev/min. The effi-
ciency of the electric motor is then lower.
If a propeller is chosen for a hybrid installation as advised in
table 1 then the hull speed will be reached but the maximum
power of the diesel engine will not be used.
The electric motor shaft, seen from behind, must rotate clock-
wise during forward sailing.
Use a 'R H ' propeller!
IGHT AND

10.5 Electrical system

The electric motor must never be in use while sailing on the
diesel engine.
A neutral position switch must be built into the diesel engine
operating handle.
An oil pressure switch is fitted on the diesel engine which oper-
ates a warning light if the oil pressure is too low.
Fit the plug of the cable delivered into the socket on the elec-
tric motor.
Connect the cable to the neutral position switch and to the oil
pressure switch, see page 59
The electric motor will now function as generator while sailing
on the diesel engine and recharge the batteries.
Electric Propulsion EP2200K, EP2200KH