Ducati Diavel Service Manual: Specific operating strategies
Idle speed
No electric motor is used for idle speed regulation (bypass is modulated instead with the throttle valve), as idle speed control is effected by the ride-by-wire system. Idle speed is maintained by the control unit when the speed drops below a specific threshold and when the clutch lever is operated and/or the gearbox is in neutral. The "clutch lever operated" signal is generated by a button on the lever itself, which interacts directly with the engine control unit. The "gearbox in neutral" signal is generated by the gear sensor connected to the bbs, and is transmitted to the engine control unit via the can line (target idle speed with engine stabilised at operating temperature is 1,350 rpm). The co value for each cylinder, always with engine stabilised at operating temperature, must be within 0.4 And 1.4 In volume percentage.
Throttle valve aperture regimens
The rider may select between four different riding modes (sport, touring, urban) from the tank dashboard and via the handlebar controls. Each riding mode contains three configurable throttle valve opening strategies (the engine control calibration parameters, in other terms the maps for quantity of fuel injected and ignition timing advance, are the same for all). This allows the rider to adapt power delivery and maximum power as follows to suit personal preferences:
- 162 High (torque delivery tuned to give the bike a sports character, with maximum power of 162 hp available (high for french and japanese market))
- 162 Low (torque delivery tuned to give the bike a tourist character, with maximum power of 162 hp available (middle for french and japanese market))
- 100 Hp (softened torque delivery with maximum power limited to 100 hp (low for french and japanese market))
Introduction to the engine control system
The engine control system used on the diavel consists of the following
elements:
Ride-by-wire system (motorised throttle valves with electric actuator,
throttle grip position sensor and throt ...
Inputs and outputs of engine control unit and connection to can network
The diagram illustrates the inputs and outputs for the engine control unit.
The signals from the brake buttons, the exhaust
by-pass valve command signal and the gear sensor signal are transmitt ...
Other materials:
Low hands free key (hf) battery level
The activation of this (amber yellow) "warning" indicates
that the hands free system has detected that the battery
that permits the active key (1, fig. 62) To communicate and
turn the vehicle on is almost discharged.
Note
In this case, ducati recommends replacing the battery
as soon ...
Overhaul of the cylinder barrel/piston components
Overhauling the cylinder
Check that the walls of the cylinder bore are perfectly smooth. Measure the
cylinder bore diameter at 50 mm from the top
face and determine the size class to which it belongs in accordance with the
values specified in sect. 3 -
1.1Cylinder/piston. Repeat measurement o ...
Checking the camshafts and supports
Check the cam contact surfaces for scratches, grooves, steps and waving.
Worn cams are frequently the cause of poor timing, which leads to loss of engine
power.
Place the camshaft between two centres and check the run-out on the areas
indicated using two dial gauges.
Service limit: 0.1 ...