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5
The following diagram provides an overview of how the fuel injection components
are integrated.
4.0 OPERATING CONDITIONS
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
AIR FLOW
METER
ELECTRONIC CONTROL UNIT
CYL 1
CYL 2
CYL 3
CYL 4
AUX AIR REGULATOR
COLD START
VALVE
IGNITION
DISTRIBUTOR
THROTTLE
SWITCH
IGNITION
SWITCH
Battery
PUMP and
POWER RELAYS
INJECTORS
Amount of Air Draw In
Temperature of Air Drawn In
Engine Load (WOT)
Engine Speed
TEMPERATURE
SENSOR II
THERMO-TIME
SWITCH
Engine Temperature
Engine Temperature/Time
Excess Fuel for Starting
Excess Air for Starting
Injection
Pulse
STARTER