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+--- Thread: Engine braking (/showthread.php?tid=2861)
Engine braking - Imaginos - 08-14-2011
I've been trying to find an answer whether the Bosch IP pumps fuel when one uses engine braking?
RE: Engine braking - Syncro_G - 08-14-2011
(08-14-2011, 01:27 PM)Imaginos I've been trying to find an answer whether the Bosch IP pumps fuel when one uses engine braking?
It pumps fuel at idle. Engine braking is pretty much the same as idle to the IP
RE: Engine braking - Imaginos - 08-14-2011
Thank you, that's what I suspected.
RE: Engine braking - dieselboy - 08-14-2011
I don't think they do. I think the rack is being pulled back to the minimal fueling to try to bring it back to idle. If it is fueling it's a very small amount.
RE: Engine braking - E300TSC - 08-14-2011
The electronic pumps shut off completely when coasting or braking.
RE: Engine braking - Imaginos - 08-15-2011
(08-14-2011, 10:23 PM)E300TSC The electronic pumps shut off completely when coasting or braking.
Yea, every car with an elctronic pump or an ECU does that.
I was wondering whether mechanical pump had some sort of detection so that governor cuts off fuel supply.
RE: Engine braking - Syncro_G - 08-15-2011
(08-14-2011, 10:23 PM)E300TSC The electronic pumps shut off completely when coasting or braking.
Interesting. So i take it fuel cuts off when RPM is above idle.