Hvad er stikket til på motorophæng - Audi A4

[Sorens2]

Er ophænget dæmpet eller måler man noget?
Audi A4 2007 2.0 TDI 8V

[hansen123]

Er ophænget dæmpet eller måler man noget?
Audi A4 2007 2.0 TDI 8V

Sidder der ikke også en vacuum slange til? Volvo bruger det til at spænde motorophæng op med ved at give det mere vacuum.

Måske audi bruger det på samme måde som elektriske dæmpere med at sende strøm igennem magnet ladet olie? bare et gæt.

[Sprint20]

"Strammer" ophænget op ved hyggekørsel/accelleration.

[Fero]

Fundet på et andet site:
HOW IT WORKS: Electronic-Hydraulic Engine Mounts electronically controlled mount is typical of high-tech mounts used in a variety of cars to dampen the last little bit of shake produced by the powertrain. It’s a hydraulic engine mount with two fluid chambers connected by a large orifice (kept closed by a rotary valve) and a small orifice (always open). The small orifice allows the mount to operate much like a simple, fairly stiff shock absorber

Og

the way the mounts work is that there is a fluid chamber with a plastic body in the middle of it, with small channel cut through it. this allows fluid from the top chamber, through the plastic body, to the bottom chamber. the bottom chamber is rubber lined and can deform under pressure. there is also an airway vented to atmosphere, with a rubber membrane separating the fluid from the atmosphere. a solenoid valve, controlled by the motronic, can open or close the airway.

below 1100 rpm (i.e idle), the engine vibrations are not enough to force fluid from the top chamber, through the passageway to the bottom chamber. the airway is open (solenoid valve open). the rubber membrane creates a soft cushion which absorbs the high frequency vibrations.

above 1100 rpm the soleniod valve is closed which blocks the airway and so "hardens" the mount (the fluid has nowhere to go). thus the mount is effectively solid.

the high frequency vibrations at speed are absorbed by the membrane (as in the idle case), while the more damaging low frequency vibrations cause the fluid to force itself through the chamber in the plastic body to the lower chamber, forcing the (lower) rubber chamber to distort - effectively absorbing the vibrations."