Re: ABS Operation, was Re: Warning Lights

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <019a01bf0ec8$01697600$dce9338e@munrof> "Fred Munro" writes:

> Thanks for the info, Bernard. I wonder where the fluid goes when it is
> pumped back into the MC in state (3). Does it increase the pressure on the
> other brake circuits? Maybe that's the source of the pulsation in the pedal
> when the ABS activates? Hmmm, I'll have to think about this some more.

It reverses the process.  Foot pressure (assisted) sends it out, and
pump pressure shoves it back against pump pressure.  That's where the
feedback 'judder' comes from.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone: 07785 302803   Fax: 0870 0883933