Service manual

Cranking
Parameters responsible for the engine’s start-up can be defined in the Cranking menu. The basic setting is the
injectors’ opening time during the engine’s start-up. This time can be defined in the 2D Cranking time table. It
should be noticed that this time is given in 1/10ms
units, that is 1ms = 10 unit in the table. The starting
dose depends on the engine’s temperature and it
grows with its decrease.
Prime pulse width
While powering the DET3 device (ignition is
switched on), it is possible to provide the extra fuel
dose (prime pulse), which may improve the engine’s
start-up by evaporating.
Cranking RPM threshold
The revs value, above whoch the device changes its
state from Cranking to Afterstart. Above these
engine’s revolutions, it begins to work by using the
volumetric efficiency table and all enrichments and
corrections.
Use both banks during cranking
In case of configuring the injectors to work in the Bank Fire mode, by marking this option in the Cranking mode,
the injectors during cranking will work in the Batch Fire mode, which may improve the engine’s start-up
(especially with low flow injectors).
While working in the Cranking mode, the fuel injection is realised twice during a single shaft’s turn. In case
when we choose the Bank Fire injection mode, and we do not choose the Use both banks during cranking
option, bank is started once for a single shaft’s turn.
Attention !
Too big values of the starting dose may lead to the engine flood and what follows is
the inability to start the engine until they are replaced. Because of that, we should
start from short value and extend them, until they reach the optimal start-up.