Lock up clutch

[Guest palm101]

Trying to find out if the c180 or c200 5 speed auto gearbox features lockup clutch. Please enlighten.

[Guest ehwwong]

hi,

could you elaborate what do you mean by lock up clutch?

[Guest Cerano]

i think what he means is a torque converter?

[Guest palm101]

Thank you for the reply. I mean a mechanical link between engine and the wheels. Lockup clutch is good for reducing transmission lost when cruising. Sometimes they are only available in the higher gears like 4th or 5th.

[Guest Cerano]

hi bro

isnt that the function of a specialised torque converter?

Lock-up torque converters

As described above, pumping losses within the torque converter reduce efficiency and generate waste heat. In modern automotive applications, this problem is commonly avoided by use of a lock-up clutch that physically links the pump and turbine, effectively changing the converter into a purely mechanical coupling. The result is no slippage, and virtually no power loss.

The first automotive application of the lock-up principle was Packard's Ultramatic transmission, introduced in 1949, which locked up the converter at cruising speeds, unlocking when the throttle was floored for quick acceleration or as the vehicle slowed down. This feature was also present in some Borg-Warner transmissions produced during the 1950s. It fell out of favor in subsequent years due to its extra complexity and cost. In the late 1970s lock-up clutches started to reappear in response to demands for improved fuel economy, and are now nearly universal in automotive applications.

[Guest palm101]

Thank you for the reply. Does the 5 speed auto have this feature. I know for a fact the 7G tronic have it.

[Guest Cerano]

hi bro

i am unsure of this.

perhaps you could check with any of the mechanics at mbm? just give them a call.