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MembersPage/RicoPL (2018-11-19 09:49:22)

Ford Escort Cosworth engine InputTrigger/LanciaCosworth

After car purchased,

are in the works.

Note: splitting to separate pages is a good idea (for easier overview and reference).

get error : file "vems.hex" is missing.

duplicate from report: http://vems.hu/vemstune/bugreports/reports.php?cmd=view&key=zprqad

Hello Rico_pl,

Upgrade to firmware higher than 1.2.11 requires bootloader upgrade,

please follow the procedures on:

http://vems.hu/vt/help/v3/general/bootloader_upgrade.html

Best regards, Dave

GenBoard/UnderDevelopment/FirmwareChanges shows improvements related to InputTrigger/LanciaCosworth were made available from 1.2.26 (so practically 1.2.31 or newer firmware recommended, with new VemsTune).

Thanks Dave, as I bought the car with VEMS unit (Escort Cosworth), I have set Trigger to "Lancia_cosworth".

My first error report shows I have trigger signals but RPM is 0 while cranking. Acc. to WIKI I should use firmware 1.2.26+. Yes, correct ?

I cannot see why RPM stays 0 while cranking. Fuel is injecting.

BR, Rico

Hello Rico,

To assist you in your startup/trigger debug, i would need the following:

Using these i can get a beter understanding of whats going on.

You can upload these files to the FileArea and link here or fire a sharing report (from VT) and link that. We'll work from there.

Best regards, Dave

Hi Dave,

here the link http://vems.hu/vemstune/sharingcenter/reports.php?cmd=view&key=pmPtyJ

BR Rico

Hello Rico,

I have reviewed your triggerlog and vemslog, this trigger type should work with special trigger type = Normal, Tdc after the trigger is likely to be around 60deg (actually more likely 90 deg), use a timing light to verify and adjust.

I have attached a corrected config (having these suggested changes) to your sharing report.

Best regards, Dave

Thanks I will test this. But why is RPM =0 ?

I thought it triggers on TDC so 0 degree ?

BR, Rico

Hello Rico,

When using simple trigger with camsync, rpm will show 0 when cam sync is not accepted (or not seen), so without sync it will not show rpm.

With the corrected settings that should hopefully be solved.

Best regards, Dave

Thanks Dave, but I do not understand the 60 degree value.

If I set TDC both teeth (prim, sec) are on the sensors,so

0 degree.

Actually 90 deg, because triggers from the PREVIOUS tooth (if configured correctly) which is 90 deg before TDC. So likely not 60 (but especially not 0, that would be invalid).

Sorry for all questions, you can give me your Paypal and I

can make a donation.

BR Rico

Hello Rico,

Lets take it one step at a time, with the corrected config do you have:

If so adjust tdc_delay so commanded timing advance lines up with your timing mark. Its recommended to force a fixed advance via:

Ignition base (verify with strobelight)

Hi Dave, I uploaded latest log in sharing report.

RPM is now ok. In Test Mode a spark is there.

How is the First Trigger Tooth defined ?

Thanks, but I have no missing tooth. Ford has only 4 teeth wheel.(+ 1 tooth dizzy/distributor)

I use COP kit so using strobe is difficult. I will try.

BR Rico

Hi Dave, no luck it won't start.What would be the FTT on

my setup ?

If I modify the sectrig (30 degree before TDC) would that help ?

Thanks, Rico

Hello Rico,

Verify ignition timing with timing light and adjust tdc_delay , first triggfer tooth where needed, make sure firing order is correct on your ignition outputs.

On COPS you can use a small piece of old ignition lead between COP and sparkplug and put the timing light there

If you have rpm and sparks, getting the engine to fire should just be close.

Best regards,

Dave

Hi Dave,

checked timing but still not starting. It seems when I plug all ignition and injectors that on cranking the injectors

get no signal or the plugs. In Test mode the injectors work. I tried with 2 batteries but still no spark.

Before I removed all plugs and they were sparking. (but injectors were unplugged)

Thanks, Rico

Hi Dave, finally found the issue. It seems the FPR was locked so inside the tank a hose was ripped. So fuel pump was working but no fuel to the engine. It starts now but it wants to set Lambda 1.0 with a cold engine so it dies after few seconds.

How to prevent this ?

Thanks, Rico

Hello Rico,

The likeliest cause of engine dying after startup is either required fuel too low (see base setup->engine setup->required fuel in VT help: http://vems.hu/vt/help/v3/v3_engine_setup.html) or afterstart/warmup enrichment need adjusting (see starting/idle warmup enrichment/afterstart enrichment curve).

The closed loop targets for ego control are set in the Lambda target table.

Best regards,

Dave

Thanks Dave, it seems an issue also with the triggers. When idling the trigger signals are red most of the time ?

I will send log file.

BR, Rico

Can you please check the log file (is shared).

Thanks, Rico

---

Hello Rico,

I have reviewed your logfile from your sharing report: http://vems.hu/vemstune/bugreports/reports.php?cmd=view&key=pmPtyJ

There seem to be some trigger issues there indeed, to get a better understanding of it could you please provide a triggerlog of engine cranking 8-10 seconds without IGN and INJ fuse and second to that a triggerlog while engine is running at idle ?

Please attach both triggerlog files to your report and clearly label them which is which. Thanks!

Best regards, Dave

Hi Dave, can you send me a base VE table for my Cosworth ?

(standard 2.0 ltr. boost ca. 1.5 bar)

I will send trigger log later.

Thanks, Rico

Hello Rico,

No Tuning is up to the end user or you could contact one of our resellers/installers in your area to tune it for you. In any case, resolving the trigger errors is imperative before any tuning is attempted. When the triggerlogs are available i will review.

Best regards, Dave