How does the accelerator pedal of a car:
All modern cars equipped with electronic fuel injection systems use what is commonly called as "management torque".
When tuning the engine, this is mapped as a function of the torque delivered; comes, that is, associated with each value of torque delivered by the motor a series of functional parameters of the engine itself, as throttle opening, amount of fuel injected, ignition controller, cycles, etc. ..
All these parameters, managed electronically, variously combined together, allow to realize all torque values can be supplied, from minimum to maximum.
The driver has at its disposal the accelerator pedal to apply the 'supply of a given pair, that will allow him to obtain the desired acceleration of the vehicle or maintaining a desired speed.
For this reason, the injection control unit reads the accelerator pedal position (index of the will the driver) and, in bases on to this delivers the matching torque, by suitably combining the values of the parameters defined in the mapping.
The correspondence between the accelerator pedal position and torque is commonly called "pedal law" and is normally expressed in percentage.
If we now imagine to reach the maximum torque with a pedal position by 80%, we would get that, equal position of the accelerator pedal, the torque demand will be greater.
This results in a greater feeling of readiness of the motor.
The module Magneti Marelli allows very accurate management of the amendment to the original curve allowing the obtaining of a good drivability at low load (driving in column or in the city, parking) while ensuring maximum brightness with you want.
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