Ignition-Injection System - Ferrari F430 Owner's Manual

The engine cooling system has a closed-
circuit with an expansion tank which
compensates the fluid volume and pressure
variations due to the engine warming up.
A filler neck with plug fitted with a valve
calibrated to 0.98 bar (14.4 psi) is installed
at the top of the tank.
Coolant circulation is activated by a
centrifugal pump (with bypass incorporated
in the thermostatic valve) coupled to the
oil pump unit (see page 109) and driven by
the crankshaft by means of a chain.
After cooling the engine, the coolant flows
to the thermostatic valve which starts
opening when the temperature reaches
77-81°C (170.6–177.8 °F), thus sending the
coolant to the radiators.
The radiators are positioned on the front
of the vehicle in order to improve heat
exchange. The right-hand radiator is
installed in series with the condenser for
the air conditioning system. The hydraulic
steering system cooling coil is fixed on the
left-hand radiator.
Each radiator is fitted with an electric
fan to encourage heat dissipation. The
radiators are connected in parallel and are
equipped with a duct that is connected to
the expansion tank for self-bleeding of the
system.
The pump is connected to the radiators by
means of pipes running lengthwise across
the floor of the vehicle.
A twin contact switch for automatic activa-
tion of the electric fan/s is installedon the
delivery pipe connecting the two radiators,
while the water temperature sensor for the
engine ECU is fitted on the water pump
upstream of the thermostatic valve.
Replacing the coolant
The coolant has to be replaced at the
intervals indicated in the Service Time
Schedule at an Authorised Ferrari
Service Centre .
6 - Technical Information

Ignition-Injection system

The system is composed of the following:
• two electronic control units
• two air-flow meters
• engine status sensors (throttle angle, rpm,
timing, ignition, etc.)
• engine control and emission actuators
(electro-injectors, coils, solenoid valves,
etc.)
• peripheral functions connected with
engine operation.
The ECU regulates the quantity of fuel to
be delivered to the injectors and corrects
ignition timing to optimise engine efficiency
on the basis of the engine rpm and the
quantity of air taken in by the engine.
Each exhaust branch is fitted with a double
linear (front) and non-linear (type on-off
on the rear) Lambda sensor.
Electronic accelerator (Drive by Wire
system)
Drive by Wire is a system that allows the
accelerator pedal to work independently
from the throttle.
This system is equipped with a
potentiometer connected to the accelerator
pedal in the place of the connection cable.
This potentiometer informs the engine
ECU of the torque request from the driver.
With the Drive by Wire system, it is possible
to:
• obtain optimal traction control by means
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