Suzuki DF200 Service Manual page 82

FUEL INJECTION TIMING CHART
CKP
sensor
signal
CMP
sensor
#1 signal
OFF
#1
ON
Injection
signal
Ep.
TDC
#6
Injection
signal
Cm.
#5
Injection
signal
In.
#4
Injection
signal
Ex. TDC
#3
Injection
signal
Ex.
#2
Injection
signal
Ep.
CONTROL MODE
BEFORE START:
When the ignition switch is turned "ON", the ECM receives a MAP sensor signal, indicating the static baro-
metric pressure of the collector assembly (surge tank). This signal is used to compensate the fuel injection
map for altitude.
WHEN CRANKING:
Fuel is simultaneously injected to all cylinders according to the "Start up mode" map in relation to crankshaft
angle.
AFTER START (FAST-IDLE FUNCTION):
The fuel injection amount is controlled to remain increased until the timer, set according to cylinder tempera-
ture at the time of engine start, expires.
WHEN IDLING/TROLLING:
The fuel injection amount is controlled to maintain a stable engine speed at the specified idle/trolling rpm.
WHEN ACCELERATING:
The fuel injection amount is controlled to increase.
WHEN DECELERATING:
The fuel injection amount is controlled to decrease.
The fuel injection is also cut off on very rapid engine deceleration.
34-signals/360˚
4-signals/720˚
ATDC 280˚ on Ex. stroke
240˚
Ex.
TDC
TDC Ep.
Cm. Ep.
TDC
In. Cm. TDC
TDC In. Cm.
Ex. TDC In.
In.: Intake, Cm.: Compression,
280˚
In. Cm.
Ex. TDC In.
Ex.
TDC
Ep. Ex.
TDC Ep.
Cm. TDC
Ep.: Explosion,
ENGINE CONTROL SYSTEM
Injection time duration
Ep.
TDC
Cm. TDC Ep.
In. Cm.
TDC
TDC In.
Ex. TDC In.
Ep. Ex. TDC
Ex.: Exhaust
3-21
Ex.
TDC
Ex.
Ep.
Cm. TDC
Cm.
In.