It uses hydraulic actuators to shift gears.
Instead, Fiat
uses hydraulic actuators, allowing for precisely customized timing not reliant on the engine's revolutions.
Not exact matches
Fiat have recently (commercially available in 2009) developed the Multi-air system which
using electronically controlled
hydraulic actuators so that they can adjust valve duration on a stoke by stroke basis.
These
actuators have
hydraulic pistons controlled by
hydraulic solenoid valves which provide proportional control of the pistons
using pulse width modulation (PWM).
Whereas traditional VTEC operation changes valve opening duration based on higher oil pressure during high rpm operation at one side of the valvetrain's rocker arms, the Civic's i - VTEC system can switch valve timing duration at low rpm and low oil pressure
using two
hydraulic actuators on both sides of the intake rocker arm.
That latter engine comes standard in Trailhawk trim, and
uses Fiat's MultiAir 2 technology, controlling intake valves with electro -
hydraulic actuators.
In contrast to the EA211, the intake camshaft is adjusted
using a high - speed
hydraulic camshaft
actuator with a central control valve.
This
uses sensors, software and electro -
hydraulic actuators working through a multi-clutch plate to adjust the power and braking applied to each wheel all by itself.