EFI General Description
Operating principal: The system operates under the speed density principal i.e. the system reads RPM, MAP, coolant and air temperatures to
make the fuel calculations.
MAP & Air Temperature Sensors: The MAP and Air Temperature Sensor are integrated into the throttle body.
Coolant Temperature Sensor: Zenith provides the Coolant Temperature Sensor and if required an adapter bushing. Zenith recommends that
the sensor be installed as close as possible to the thermostat.
RPM Inputs: RPM inputs are taken from the negative side of the ignition coil, or distributor.
Hot /Cold Start: The ECU reads both air and coolant temperatures and will calculate the correct fuel requirements for gasoline or LPG for supe-
rior starting.
Governor:
Full Authority: The governor is a full authority governor i.e.. It will seek to maintain the RPM commanded regardless of engine load conditions.
Tamper Proof Speed Settings: Engine speed settings are factory programmed and non field adjustable
Idle Self Learn: The governor contains an adaptive self learning feature which electronically provides the proper throttle stop reference for opti-
mum governing and consistent idle for each production unit.
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