MembersPage/VolvoS (2013-05-08 17:53:30)

Volvo S70 T5 Turbo

Motronic 4.4 Ecu 19T 21psi cca 340Le

Engine: B5244T LPT 9:0:1

2445 ccm

5 cyl

Na camst

Rs500 intercooler

S60R Fuel injectors 42lb

Walbro 255 Lph pump

TD04HL-19T Turbo

3" exhaust

Msd ignition(distributor)


New Project: 1998 Volvo S70 B5244T + vems V3

Engine: B5244T LPT 9:0:1

2445 ccm

5 cyl

Na camst

Rs500 intercooler

S60R Fuel injectors 42lb

Walbro 255 Lph pump

TD04HL-19T Turbo

3" exhaust

Volvo T5 COP's Bosch 0221604001

Stock 60-2 flywheel, VR sensor

Stock CAM HALL sensor


Ignition outputs

Cylinder 3 is sooty in ec36/34

note: dwell is 2.3 msec, does not grow with MAP (dwellmap=0)

dwellmap is 0 because we don't see any change in ignition power with higher dwell than 2.0 msec


ign TDC-delay (primary trigger settings) is too low !

Correction hint: 144+20=164 crankdeg = 15*6 + 74

* Strobe

* cyl 1, EC36/34 --> 710 deg it should be 0

* cyl 2, EC36/35 --> 650 deg 144

* cyl 4, EC36/33 --> 600 deg 288

* cyl 5, EC36/36 --> 520 deg 432

* cyl 3, EC36/24 --> 430 deg 576


Validation shows possible problem

With hall dirac filter the problem shows less times


Benchtest

We applied some changes to the config, because "TDC after trigger" = 20 crankdeg is not a good setting (see above ... Since we changed 144 crankdegrees, you might need to rotate the ignoutput sequence by 1 event, strobing will show it).

After that, we benchtested the config.

We benchtested the ~160 kPa and 3000 .. 7000 RPM range most extensively where your cylinder seems to misfire. The ignition and injection outputs fired properly.

Test config: http://www.vems.hu/files/VolvoS/tested-v3.3_u004521-A-2013.05.06-12.