Drive by wire functionality

We had some bad experience with the ref limiter and gear change ignition cut on our rotary engine. We are not sure it broke the engine but fact is that the engine hasn't broke any more since we deactivated the systems. Maybe it is just a coincidence. To be honnest the engine calibration has been changed also since then.

I fear activating these systems again and was looking for a solution.
With an DBW system I think we are able to restore the same functionalities as before and don't have to touch the ignition-system.

I found the following functionalities in the ECU manager software and want to check if they correspond with my understanding. If not could you please correct me so I do not have false hope when I go over to the purchase.

I want to use the throttle for up-shift. So the throttle angle changes towards 0% during a predefined time to get the load of the engine. The driver keeps his foot on the accelerator pedal. Typical behavior for dog engaged transmissions. But automatically done by the ECU and triggered by a load cell in the shift lever.

I want to use the throttle for down-shifts (throttle blip). To be able to shift faster into lower gear. The blip depends on the wheelspeed and gear which it is in and triggered by a load cell in the shift lever.

This I didn't find but never the less I would like to know if it is possible :

I would like to use the throttle to perform the pit limiter function. Throttle valve works like a PID with wheelspeed as feedback channel.

I would like to use the throttle for RPM limit when the driver revs to high. The throttle valve is controled in closed loop with rpm as feedback channel.

And of course with every change in throttle position the logic needs to follow the injection and ignition which comes with this throttle position.

Somebody did this before ? And who can give me some usefull tips and hints ?

IJ.

23 July 2008 23:13

Waiting for the official word but my understanding is at this time no independant control over multiple TB's.
(I run a DBW4 here)

figgie

24 July 2008 14:10

"IJ." wrote:
Waiting for the official word but my understanding is at this time no independant control over multiple TB's.
(I run a DBW4 here)

Missed Mark's post? :)

"MarkMc" wrote:
The DBW 4 only has one aim value going to it so all four (or three) throttles are always driven to the same aim point. There are no options to have the three throttles drive to different positions.
So, you need to be pretty careful in your calibration of the High and Low values fro the TP sensors in the throttle body, i.e they will all get driven to, say 100%, you need to make sure they are all set with 100% on the sensor being the same amount of throttle opening.

25 July 2008 03:04

Just a little ;)

MarkMc

30 July 2008 07:03

At this time there are no plans to run independant aim values for the DBW-4......from the ECU.

We have done some developement work with independant aims from the ADL2 but this is not a simple exercise and involves alot of tuning. So Stuie the basic answer is yes/but, let me know who your local dealer is and we can probably organize something.

I don't know of anyone doing clutch control at the moment but it sounds fesible enough but again, through an ADL2 not an ECU at this stage.

hasman

13 May 2009 21:00

please frinds i have motec m600 i want to used for 2jz engine i need the datasheet information

14 May 2009 14:24

the 2jz is not DBW....

TIM图片20190530230245.jpg

Drive by wire functionality

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