DDEC V ENGINE DRIVING TIPS
DDEC V ENGINE DRIVING TIPS
Driving with an electroncially
controlled engine feels different
from driving with a mechancially
goverened engine.
Accelerating the Vehicle
Engine response versus pedal
movement may feel different from
the mechanical-governed engine
you were driving. The Accelerator
Pedal was designed to communicate
“percentage” foot pedal travel to
the engine's Electronic Control Unit
(ECU). The engine will respond
accordingly to the driver's demand.
Another throttle or governor
characteristic you may need time to
get used to is the DDEC Limiting
Speed Governor. This allows the
driver to command total engine
response between idle and rated speed,
such as accelerating at half throttle
– an advantage when driving under
slippery conditions.
If you require wide-open throttle
engine response, either accelerating
or just plain pulling hard, the throttle
(AP) will have to be held to the floor.
To obtain 100% fueling at any speed,
the Accelerator Pedal will have to
be maintained at the fully pressed
position.
Cruise Control
For added driver convenience and
comfort, DDEC V also features a
Cruise Control option that works just
like the system in your car. It can
be operated in any gear above 1000
rpm or road speed faster than 20
mph (32 kph), up to the rated engine
speed. And it can be programmed to
hold your road speed at or below the
maximum vehicle speed. The switch
to energize Cruise Control is usually
mounted on the instrument panel.
See Figure 10.
Figure 10
Typical Cruise Control
Switches
36
All information subject to change without notice. (Rev. 01/04)
6SE484
0401
Copyright © 2004 DETROIT DIESEL CORPORATION