Nurzh_rt Posted June 14, 2019 Report Share Posted June 14, 2019 Hi, i setup Sequental/staged injection mode on my subaru. Question is why Link can not use fuel cut mode with EOI timing position and i have message use SOI Ok, second question is if i need to end injection timing at 360 degrees with 10msec injection at 6000rpm, i need to start injection at 720? and if i need 14msec at same engine speed, the maximum number in ECU is 720. or may be i misunderstand something lol Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 14, 2019 Report Share Posted June 14, 2019 On 6/14/2019 at 4:31 PM, Nurzh_rt said: Question is why Link can not use fuel cut mode with EOI timing position and i have message use SOI This rule only applies to staged injection. I cant confidently tell you the reason of the top of my head, I did know but it is a while since I had it explained to me. From memory it is something to do with staged injection, in some situations if one of the injector stages is open longer than the other a fuel cut limiter can potentially cut it short. On 6/14/2019 at 4:31 PM, Nurzh_rt said: Ok, second question is if i need to end injection timing at 360 degrees with 10msec injection at 6000rpm, i need to start injection at 720? 720 or 0 are effectively the same thing so either will do. On 6/14/2019 at 4:31 PM, Nurzh_rt said: and if i need 14msec at same engine speed, the maximum number in ECU is 720. or may be i misunderstand something lol 14mS at 6000RPM will give an injection duration of 504deg. If you start the injection at 576deg it will end at 360deg. I will attach one of my spreadsheets below to make it easier to work out. Spreadsheet removed as it had a mistake. Re attached in a later post. Quote Link to comment Share on other sites More sharing options...
Nurzh_rt Posted June 15, 2019 Author Report Share Posted June 15, 2019 Thank you Adamw for your answer im little bit confuse about, whether this table will work properly Sequential Injector Timing (°BTDC)SOI 360.lte for example if I need to end injection at 360, injection time is 5ms injection duration is 180 deg at 6000rpm, I need to start it at 540deg right? but in table its 180deg Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 16, 2019 Report Share Posted June 16, 2019 19 hours ago, Nurzh_rt said: for example if I need to end injection at 360, injection time is 5ms injection duration is 180 deg at 6000rpm, I need to start it at 540deg right? but in table its 180deg Yes you are right, it should be 540. Sorry I think I have a mistake in my spread sheet, I think I have fixed it now. Injection Calcs.xlsx Quote Link to comment Share on other sites More sharing options...
Nurzh_rt Posted June 17, 2019 Author Report Share Posted June 17, 2019 On 6/16/2019 at 2:46 PM, Adamw said: Yes you are right, it should be 540. Sorry I think I have a mistake in my spread sheet, I think I have fixed it now. Injection Calcs.xlsx 15.62 kB · 5 downloads 0 and 720 is same you told me, in table not same, please check it Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 18, 2019 Report Share Posted June 18, 2019 13 hours ago, Nurzh_rt said: 0 and 720 is same you told me, in table not same, please check it Yeah sorry, I done that spreadsheet about 10 years ago and have obviously made a mistake in one of the formulas for end of injection somewhere. I dont really have time or interest in fixing it right now. You will have to get your calculator out... Nurzh_rt 1 Quote Link to comment Share on other sites More sharing options...
Nurzh_rt Posted June 18, 2019 Author Report Share Posted June 18, 2019 1 hour ago, Adamw said: Yeah sorry, I done that spreadsheet about 10 years ago and have obviously made a mistake in one of the formulas for end of injection somewhere. I dont really have time or interest in fixing it right now. You will have to get your calculator out... thank you for your support, i'll try to calculate it. Quote Link to comment Share on other sites More sharing options...
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