Chrysler laser 1990 Technical Information Manual page 149

Simultaneous Injection
INJECTION UPON START CRANKING
TDC sensor signal
Crank angle
sensor signal
No. 1 cylinder
No. 3 cylinder
No. 4 cylinder
No. 2 cylinder
During the period immediately following the start of
cranking, fuel is first injected once in synchrony with
the 5" BTDC signal from the crank angle sensor.
Thereafter, fuel injection is synchronized with the
FUEL INJECTION DURING COLD START
TDC sensor signal
Crank angle
sensor signal
No. 1 cylinder
FUEL SYSTEM -
Intake
No. 3 TDC
No. 1 TDC
Fuel injection
Fuel injection
2 crankshaft revolutions (720')
Fuel Injection Control
Combustion
After the first No. 1 cylinder TDC signal has been
detected, fuel is injected sequentially as described
earlier.
If the engine is still cold when the first No. 1 cylinder
TDC signal is detected, simultaneous fuel injection
is performed as described in the following.
No. 4 TDC
Fuel injection
14-37
TDC
Exhaust
No. 2 TDC
Fuel injection