Injector Control - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DI07-58

Injector control

Peak pull current
= 22.0 A
Through pull
current = 7.5 A
The control current of the coil takes the following form:
The low current allows the Joule effect losses in the ECU and injector to be reduced. The call current is higher than the
hold current because during the hold phase.
• The air gap between the valve and the coil is reduced and the electromagnetic force to be applied to the valve can
thus be reduced. It is no longer necessary to overcome the valve inertia.
Note
Joule Effect: The principle that the heat produced by an electric current is equal to the product of the resistance
of the conductor, the square of the current, and the time for which it flows.
I: current (A)
R: resistance ( Ω Ω Ω Ω Ω )
T: time (sec)
H: calori (cal)
Heat capacity (H) = 0.24 I
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Current
Pull-in period
2 RT
Peak hold current
= 22.0 A
Through hold current
Time
Hold period
= 7.5 A
Y220_07112
FUEL SYSTEM
DI ENG SM - 2004.4