Members Page/Jan Saenen/Progress - VEMS wiki www.vems.hu

MembersPage/JanSaenen/Progress (2006-06-16 20:45:46)

[MembersPage/JanSaenen]

Current state:

Used MembersPage/PhatBob/UserGuide and Firmware .38

I'm using a BMW M20 6 cylinder engine simular to MembersPage/GergelyLezsak

It uses the following sensors and injectors:

440CC injectors Bosch
Stock single coil distributer
VEMS Internal Map sensor (working)
VEMS shop IAT sensor (working)
WB02 5057 sensor (working)
Other CLT sensor (working)
Volvo TPS sensor (working)
Stock VR sensor (working)

'16-06-06'

Trying to figure out the primary triggger settings. This brings some questions along.

*What tooth is considered the first one? Is this the one after the 2 missing ones? So the first missing one would be nr 59 and the sencond one being nr 60 on a 60-2 wheel-setup.

I believe the tooth numbering starts at 0, with 0 being the first tooth after the missing ones. (I have a 36-1 tooth wheel, so please can someone confirm?)

*What is ment by the next trigger tooth? Is this the tooth where the next cilinder is at TDC?

Next trigger tooth is how many trigger teeth before the next "event". So for a 6 cylinder, you have 3 events per crank rotation, so 60/3=20 should be OK. (Mine is a v8, so my value is 36/4=9) Note that this does not have to change if you change the "trigger tooth" parameter)

*What is ment by angular width to reset the enginefase? I don't have a cam sensor and it's a four-stroke 6 cilinder engine. So my firing order has to be reset after 720 degrees. Cilinder 1 at 0 degrees, Cil 5 at 120 degrees .......... Cilinder 4 at 600 degrees and Cil 1 again at 720 degrees.

Don't remember this off the top of my head...

*What is ment by angular width of tooth? Is this 360/60=6 degrees or the actual tooth width which is approx 2 degrees?

It includes the tooth and the space next to it, so is 6

Based on this my primary trigger settings should be:

Rising
Multitooth
Disabled
Disabled
Disabled
Disabled
62 (deg) TDC after the trigger If tooth 1 is the first rising edge after the two missing ones.
- Careful: This is the number of degrees after the trigger tooth as defined in the "trigger tooth" parameter.
58 Number of teeth on wheel
5 Trigger tooth If tooth 1 is the first rising edge the sensor sees after the two missing ones.
20 Next trigger tooth
2 Angular width of tooth
121 Tooth rel normal (Not relevant)
181 Tooth rel missing (Not relevant)
6 Angular width of missing tooth
720 engine fase, when to reset

But this doesn't comply with what I've seen at other maps from people with the same engine.

Especially the next trigger tooth is different.

I'll look at my notes tonight. I wrote a spreadsheet for my car that I can pass on to you if you need.

[dnb]

IAT and CLT:

[/MembersPage/JanSaenen/Tempsens]

'Fuelpump'

[/MembersPage/JanSaenen/Fuelpump]