Fiat Bravo Service Manual page 107

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2
v Engine
Fuel system
10.
Acceleration and full power
During acceleration, the electronic control unit brings about enrichment of the mixture concentration
(graph A) as a function of signals from the coolant temperature sensor (1), rpm sensor (2) and throttle
valve angular position sensor (3).
When the engine is working at full power, base pulse constnants (ti) are increased by a factor (K) ac­
cording to opening angle (a) of throttle valve (3).
When the butterfly valve opening angle exceeds 70° (graph B), fuel power enrichment comes into oper­
ation and increases base pulse constant by about 10%.
When rpm exceeds 6000/min, the control unit restricts maximum rpm (suppressing injection pulses by
cutting off the fuel supply).
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