When were DMF (dual mass flywheels) first installed on automotive vehicles ?
Does anyone have any statistics concerning the failure rate among different manufacturers / vehicles ?
Interesting as the concept is, I am not convinced that the advantages, e.g. reduced driveline noise/vibration,
outweigh the additional expense of the DMF itself and / or the reduced reliability factor inherent in the design as opposed to a single mass flywheel.
Can anyone tell me how long the DMF manufacturers warrant their flywheels to the OEMs ?
Should failure of a DMF be covered by the OEM, e.g. Volkswagen, under their stated powertrain warranty, if said failure causes a catastrophic failure of the clutch and renders the vehicle unusable?
Is it possible for the planet gears to strip out in a DMF and render a vehicle undrivable?
Is it possible for the grease in the DMF to leak out and contaminate the clutch disc, again rendering the vehicle undriveable ?
Do any OEMs authorize the replacement of a factory installed DMF system with a single mass flywheel system and still retain any unused powertrain warranty coverage ?
Comments ?
for more info:
Thanks in advance,
Hunter
Bruce Toski
ASE Master Certification
Automotive Instructor
Does anyone have any statistics concerning the failure rate among different manufacturers / vehicles ?
Interesting as the concept is, I am not convinced that the advantages, e.g. reduced driveline noise/vibration,
outweigh the additional expense of the DMF itself and / or the reduced reliability factor inherent in the design as opposed to a single mass flywheel.
Can anyone tell me how long the DMF manufacturers warrant their flywheels to the OEMs ?
Should failure of a DMF be covered by the OEM, e.g. Volkswagen, under their stated powertrain warranty, if said failure causes a catastrophic failure of the clutch and renders the vehicle unusable?
Is it possible for the planet gears to strip out in a DMF and render a vehicle undrivable?
Is it possible for the grease in the DMF to leak out and contaminate the clutch disc, again rendering the vehicle undriveable ?
Do any OEMs authorize the replacement of a factory installed DMF system with a single mass flywheel system and still retain any unused powertrain warranty coverage ?
Comments ?
for more info:
Thanks in advance,
Hunter
Bruce Toski
ASE Master Certification
Automotive Instructor
