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Volvo ECS - Page 13

Volvo ECS
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13
General information
Introducing electronic control adds the following main
benefits:
- faster height change response times.
- easy addition of other features.
With electronic control, the height control valves are
replaced by electronic height sensors, and air admission
and release is controlled by solenoid valves.
The sensors send a voltage signal to an Electronic Control
Unit (ECU). The voltage varies according to ride height.
The ECU compares the height signals with pre-
programmed parameters, and sends signals to the solenoid
valves to admit or release air.
The concept is shown in the simplified diagram
above.
Electronic control

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