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The following diagram provides an overview of how the fuel injection components
are integrated.
AIR FLOW
METER
Amount of Air Draw In
Temperature of Air Drawn In
THROTTLE
Engine Load (WOT)
SWITCH
IGNITION
Engine Speed
DISTRIBUTOR
TEMPERATURE
SENSOR II
THERMO-TIME
SWITCH
4.0 O
PERATING
There are six major operating conditions that the components of the L-Jetronics
fuel injection system must detect and provide inputs to the control unit in order to
provide the correct fuel-air mixture. These operating conditions are:
1.
Cold Start
2.
Warm Up
3.
Idle During Warm Up
4.
Load Adaptation
5.
Temperature Adaptation
6.
Coasting Adaptation
ELECTRONIC CONTROL UNIT
STARTER
Engine Temperature
Engine Temperature/Time
C
ONDITIONS
Injection
Pulse
PUMP and
POWER RELAYS
IGNITION
SWITCH
Battery
INJECTORS
CYL 1
CYL 2
CYL 3
CYL 4
AUX AIR REGULATOR
Excess Air for Starting
Excess Fuel for Starting
COLD START
VALVE
5
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