32 replies to this topic

[slindborg]

I think one of the most interesting design to follow for the years to come would be the ones based on the Freescale Qorriva evaluation board design
http://www.msqorivva...forum/index.php

or maybe even the 5554openecu design...

Ohhhhh I didint know about that one, certainly will be looking at at that

After a rapid review, its not far off the idea I had for taking a lot of the IO in over CAN etc, very cool

Edited by slindborg, 26 July 2011 - 06:16 PM.

[alanoo]

Yep what is so cool about that is that it is from the beginning an automotive powertrain design and that the integrated TPU can almost run the engine itself with its integrated functions without adding any code...

[slindborg]

Yep what is so cool about that is that it is from the beginning an automotive powertrain design and that the integrated TPU can almost run the engine itself with its integrated functions without adding any code...

Thats the hardest part sorted imho

[Rosssco]

Any particular reason there is a desire to retain the ETB over changing to a cable throttle? Hassle basically?

[The Batman]

Hassle Cost Reliability Mainly

[techieboy]

Hassle and preference mostly, I think. I'd certainly much rather retain the ETB and not having to be twatting around with cables and idle control valves etc.

[alanoo]

and with a good capable ECU, an ETB is almost a must have as it makes things like TC, torque reduction maps, lunch control or throttle blip must more powerful and easier to use

[slindborg]

Also the KEY function for any car is it makes cold start and idle a dream to sort out

[Seb.F]

lunch control

I'd like some of that please

[alanoo]

Oops, typo

Edited by alanoo, 27 July 2011 - 10:37 AM.

[Winstar]

The Z22SE does not use ion sensing for knock monitoring, only for cam phase signal

that's what I ment , I presume that they're going to use wasted spark then if there's no cam position sensor?

and with a good capable ECU, an ETB is almost a must have as it makes things like TC, torque reduction maps, lunch control or throttle blip must more powerful and easier to use

throttle bilp would be great, can't be hard if you know the gear ratios and fit a few microswitches.

[alanoo]

Yep, the problem with the cam signal sent by the ignition module is that it's not constant, so any "normal" standalone will see it as a cam signal loss and most likely stall the engine after some time. And another issue is that it does not output signal on engine start, only after a few cycles. So you basically have to start the engine semi sequential then get the cam signal then you can move to sequential... Of course nothing a small bit of code couldn't sort, but as it is specific to this engine only, no one ever did bother to write it. If you have a multimap capable standalone you can make it work with a switch on the dash; a friend has it working on his Motec, he starts on a map with no cam signal needed, then rotate the switch to map "2" and has the sequential working

[slindborg]

Yep, the problem with the cam signal sent by the ignition module is that it's not constant, so any "normal" standalone will see it as a cam signal loss and most likely stall the engine after some time.
And another issue is that it does not output signal on engine start, only after a few cycles.

So you basically have to start the engine semi sequential then get the cam signal then you can move to sequential...

Of course nothing a small bit of code couldn't sort, but as it is specific to this engine only, no one ever did bother to write it.

If you have a multimap capable standalone you can make it work with a switch on the dash; a friend has it working on his Motec, he starts on a map with no cam signal needed, then rotate the switch to map "2" and has the sequential working

Most OEM pcm's start up in batch mode then move to sequential when they have secured a lock on the cam position. You can do it without a cam sensor at all and measure the accelerations of the crank teeth etc, but even then you need to start in batch mode.