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”Two hydraulically dampened engine mounts reduce the transmission of engine vibration to the passenger compartment. At idle, a pneumatically actuated solenoid allows engine vacuum to pull a positioning spring in the engine mount down, allowing the easier transfer of a glycol mixture through the mount, which softens the mount and reduces the transmission of engine vibration. At a speed of about 3 mph, the engine-control unit cuts off current to the solenoid valve, closing the hydraulic connecting channel between the two chambers. Now, the exchange of hydraulic fluid is through a smaller spiral-shaped channel, thus making the engine mounts firmer.”
Read more >http://hooniverse.com/2012/03/29/volkswagen-phaeton-engineering-marvel/
| 11 years ago. Rating: 3 | |
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