Electrical components

2.15.1 Alternator (A)

Externally controlled by the crankshaft by means of a belt.

Ampere 80 A
Volt 12V

Fig 2.43

2.15.2 Alternator for Poly-V belt (optional) (B)

Externally controlled by the crankshaft by means of a belt.

Ampere 80 A
Volt 12V

Fig 2.44

2.15.3 Starter Motor (C)

Type Bosch 12 V
Power 2 kW
Anticlockwise rotation (seen from timing system side)

Type Mahle 12 V
Power 3.2 kW
Anticlockwise rotation (seen from timing system side)

Fig 2.45a

Fig 2.45b

2.15.4 EGR Valve (D)

A device that provides for exhaust gas recovery that is controlled by ECU, which, according to acceleration parameters, RPM and power requested, varies the opening and closing of the valve.
The device has an integrated ECU, which, on each start-up of the control panel, executes an operation self-check.
In the event of a malfunction, it sends a signal to ECU, which, in turn, signals the anomaly on the control panel.

Characteristics:

Type Dell'Orto EGV A16
Operating/storage temperature: -30°C / +130°C.

Fig 2.46

2.15.5 Cold starting device (Heater)

The cold starting device consists of a resistance, managed by the ECU, which is activated when the ambient temperature is ≤ -16° C.
The intake air is heated through the resistance and facilitates starting.

Characteristics:

Type Hidria AET 12 V
Power 550 W

Fig 2.47

2.15.6 Fuel intake regulating valve (SCV)

Valve E is situated on the high-pressure fuel injection pump.

It is managed by ECU, which regulates fuel intake by means of fuel pressure values inside the Common Rail, choking the input entrance of fuel in the injection pump. The digital signal varies the opening of the valve in proportion to the quantity of fuel required for the Common Rail.

Important

Refer to Par 2.9.3

Fig 2.47 a

2.15.7 Electric fuel pump (optional)

NOTE: Component not necessarily supplied by KOHLER.

The electric pump is located before the fuel filter. One of the following pumps can be assembled A1 - A2 - A3 - A4.

Tab. 2.39 (a-d) indicates pump features.

Tab. 2.39