You will get a couple of minutes max from an 8Ah battery so realistically, enough for a few 'boosts'.What sort of losses are we talking about here? like if it was in the boot for example.
duty cycle ive no idea what that is. I know what it means though I have that on my welders. How would i find out? Idont think its going to be easy to get data sheets
that battery looks a reasonable size any idea on dimensions? might be possible to put it in the engine bay but is 8AH going to be enough? its a 7kw system on the Audi just for the turbo itself.
charging havent got to that yet but there are plenty of options such as running a second alternator. i believe the original charges from the alternator on the car
How are you going to recharge the battery? You'd need a DC-DC converter and electronics to control it.
Also, a sudden surge in torque will probably unstick the rear tyres causing possible loss of control.
To be honest you'd get a better result from remap and new maf. You'll need to up the fuel anyway otherwise all that will happen with the extra air, is a big flat spot and serious juddering.
Don't expect a nice smooth transition from the 'boost' to the main turbo either.
What are you actually trying to achieve? Do you feel your 320d is flat at low rpm? if so, change the maf.
Honestly this is the most mad idea I have ever heard of as a diesel tuning mod.
What do you think the clutch and gearbox will think of the sudden boost in torque?