THE TURBO ACTUATOR
The turbo actuator is the component of the vehicle that controls the opening of the variable geometry according to the requirements of the Vehicle Control Unit. It may be electronic or pneumatic.
To perform its task properly and relieve to the turbo the necessary pressure at all times, the actuator communicates with the vehicle control unit and controls the blades position of the geometry. The aim is the turbo releases the perfect amount of gas at every engine speed to increase vehicle power gradually and without causing damage.
Current electronic actuators are composed of a mechanical part and an electronic part, which allows a fast and precise control of the opening of the geometry.
Until recently there was no possibility of repairing when there was a failure in an electronic actuator. Nowadays it is possible to repair it.
There are signs that indicate that we may be experiencing a failure in the turbo actuator, such as lack of power, an abrupt delivery of engine power, smoke and warning light on the dashboard of the vehicle.
The actuator failures can be electronic or mechanical. Formerly the only alternative to repair was the replacement by a new turbo. Today, there are some actuators sold in the aftermarket and in other cases they can undertake repair.
1. Electronic breakdowns:
Means only 20% of faults in the actuators. Although there are companies that guarantee repair, the number of warranty claims remains high. As handicap we can consider fragile electronic components, exposure to nearby high temperatures and repair depends on the type of failure that occurred.
2. Mechanical breakdowns:
Because of its construction and operation, the actuators are affected by high temperatures, prolonged exposure to heat and by friction and normal wear of mechanical components. They include gears/pinions and motors, which together account for 80% of the damages suffered by the actuators. In this case the solution is the replacement of the affected mechanical element.
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