keizsr Posted January 15 Report Share Posted January 15 Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 15 Author Report Share Posted January 15 After the update, after the first explosion, start failure, then cranking, but there are symptoms that fuel is not coming out, once the IG switch is turned off, and then it starts normally.Before the update, the can output to the external meter was an error. but this time it's normal Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 15 Author Report Share Posted January 15 ログ https://drive.google.com/file/d/1YGUxa_j_vcgW9DSMLWVYhbLN4L7CIuKA/view?usp=share_link Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 15 Report Share Posted January 15 I dont think any of your issues are related to the bootloader, the ecu is obviously booting up if PC Link is connecting and you can record a log. I see two potential problems in your log: For the first and second start attempt it took a long time before dwell was commanded, this suggests maybe an issue with the trigger. Also, just at the beginning of cranking on the second start attempt the RPM dropped to zero briefly and the trigger error counter clocked up a few counts. However the battery voltage jumped up at the same time so maybe this was something like the driver slipping off the ign switch or starter button? Please do a trigger scope while cranking so we can look if there are any clues in there. Considering your temperature is quite cold, you have very little (no) extra fuel going in during cranking. When your engine starts on the third try, it is idling with an injector pulse width of 4.3ms, and that is giving a lambda leaner than target. However when cranking you only have 3.7ms! At cold temperatures most engines need a lot more fuel to get started - it is more typical to see 100-300% extra when cranking. So I would expect your engine would want more like 10ms pulse width when cranking. This may explain some of your symptoms as every time you power cycle the ignition you would get a new dose of "pre-crank prime" which after a few goes may give you enough fuel to start. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 15 Author Report Share Posted January 15 Mr. Adamu Thank you for your quick response.I will execute the trigger scope Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 16 Author Report Share Posted January 16 Hello, I just did the trigger scope yesterday https://drive.google.com/file/d/1gUHDqnj8D6ybz22TMLY8vb5TBcIFgj0i/view?usp=share_link https://drive.google.com/file/d/1G7A_ghmVNjtD4L-xWcR1_M9oT9ix_haP/view?usp=share_link https://drive.google.com/file/d/19ozH8e-rG_0LZiyIdV_s0ud1yUVMouzr/view?usp=share_link Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 16 Author Report Share Posted January 16 私はコールドスタートを見ています。この設定では、最初のクランク プライムは時間プロットに表示されません。どこで確認できますか？ スタートポジションスイッチの入力はクランキングスイッチから入力 新しいログも付けておきます https://drive.google.com/file/d/1Lq21U96dao4ta3DI6S1_z_xC0Eh3CpVX/view?usp=sharing Looking at the new log, I noticed that the dwell time is quite high, but why? Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 16 Report Share Posted January 16 What engine is this? Is the trigger system factory? The high dwell means the ecu is receiving large variations in "tooth spacing" from trigger 1. I think there is currently something wrong with the first crank prime parameter, somebody else reported the other day it is not working. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 16 Author Report Share Posted January 16 Hi trigger is not factory 24-1 optical sensor motec#59110 on crank (CHERRY GS101205) Looking at the log, it looks like the pre-crank prime is still appearing after starting the time plot. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 17 Author Report Share Posted January 17 Hello, I will send you the log from when it started normally a few days ago The reason why there is such a log is that I am having trouble starting when it is cold.Even if it starts normally like this log, it will be unable to start the next morning like the first log.The settings have not been changed. I was wondering why, but I'm not good at analyzing logs.If you don't mind, could you compare them by assuming that there is a problem on the ECU side? https://drive.google.com/file/d/1q1SheN3S2ec9TJ90ZcPh3jIwltxnWjNF/view?usp=share_link Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 17 Report Share Posted January 17 What is the engine? Can you attach a photo of the trigger set up? I still think there maybe 2 different issues here, one is the ecu doesnt appear to be happy about the trigger signal sometimes. The second is there doesnt appear to be enough fuel. In the "starts normally" log there are no trigger errors and inj PW is about 6ms at the start of cranking. In the "bad starting" log there are trigger errors increasing every start attempt, the dwell times are stretched and inj pw is only about 3.8ms. Your injector dead time is also very short - only about 0.1ms which is very odd. This likely isnt part of your problem but it probably means you are getting even less fuel than what it shows. Can you attach a copy of your tune also. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 17 Author Report Share Posted January 17 Mr. Adamu, I'm sorry to trouble you.It's a trigger error that can be seen in the log at the time of a bad start.There was some combustion during cranking.I wonder if the error was counted because it couldn't be started.This evening Attach a test drive log map The engine is a Nissan u20 OHC 4-cylinder 2000cc, which is almost the same as Nissan's L-type 4-cylinder 2000cc https://drive.google.com/file/d/1dx7h2vVU2O3oZxzsXQal-VA6Euy9VcNs/view?usp=share_link https://drive.google.com/file/d/1aSQErBB6QwXbIv5LRAPFFJ1FxxzDLIVU/view?usp=share_link Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 17 Author Report Share Posted January 17 There was a picture of the trigger being installed. 24－1 Trigger 2 replaced the distributor with an SR20, changed the contents to an AEM disc, and identified the cylinder. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 17 Report Share Posted January 17 For the starting fuel, can you try the settings below. For the trigger, your design and engineering looks good, but there is still something going on that the ecu is not happy with sometimes, I think maybe we just havent caught it yet in trigger scopes. Is this engine quite high compression ratio? Can you do a few more trigger scopes, try clicking the capture button just a tiny amount before cranking so we see the first revolution on the crank. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 17 Author Report Share Posted January 17 Understood. Change the settings and take the log again. The compression ratio is 11.5 Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 18 Author Report Share Posted January 18 Sends logs and trigger scopes after configuration changes https://drive.google.com/file/d/1nXWiAnLTrOE1rD6xVdIr-z5x54LdzFwT/view?usp=share_link https://drive.google.com/file/d/1he-mXmPmvET71TlGw2r9bRVLekGT_2wg/view?usp=share_link no start https://drive.google.com/file/d/1R7POFOTTiL_604LcO13-Z215CG_tpHJk/view?usp=share_link idling Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 21 Author Report Share Posted January 21 Mr. Adamu: Are you saying that the problem with looking at the trigger scope is the variation of 01 to 0.2v between the rise and fall portions? Do you have any improvement measures in that case? Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 22 Report Share Posted January 22 Sorry for the slow reply. On 1/21/2023 at 3:39 PM, keizsr said: Are you saying that the problem with looking at the trigger scope is the variation of 01 to 0.2v between the rise and fall portions? No your voltage looks fine. As yet I havent actually seen any issue in any of the trigger scopes that you have captured, they all look acceptable. But the fact that you have very erratic dwell sometimes during cranking is a strong indication that the ecu is not always getting regularly spaced timing between crank teeth/edges. So im fairly certain there is an issue with the trigger - just we havent caught the problem yet in a scope. I have a couple of thoughts of some changes you could try if it wasn't too difficult for you - they may not help but they would help rule out some possibilities: 1. The ZF/Cherry sensors are designed to give the best performance with quite a strong pull-up resistor. I have never seen it cause any problems with low tooth count wheels so you should be ok with 24teeth especially at low RPM, but I have seen them give errors at high RPM with 36-1 and 60-2 wheels when used with the built-in ecu pull-up (4K7). So it may just be worth trying the 1Kohm to 5V pull-up resistor as recommended in the ZF datasheet. 2. Due to your high compression and probably the old design starter motor the cranking RPM is quite uneven, you can see it slow down a lot as each piston comes up to TDC. In some of your scopes the width of the missing tooth gap is almost the same as some of the regular teeth. It is possible that maybe sometimes the cranking speed gets worse due to cold weather or sometime and the ecu has trouble detecting where the missing tooth is. If you ground off another tooth to make it 24-2, this will make it easier to detect. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 22 Author Report Share Posted January 22 Thank you again I will try the pull-up resistor Should the 24-1 be reduced to 24-2 for the disc? There is a separate 12-tooth disc.It is possible to make it 12-1 by removing the teeth, but the number of teeth will be reduced, so it is not good, right? 24-1 to 24 -2 If there are no disadvantages, I will try 24-2.I would be happy if I could get an answer when I have time. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 22 Report Share Posted January 22 There are no disadvantages with 24-2 Vs 24-1. 12-1 would be fine also - in theory not quite as good as 24 teeth but I dont think you would ever notice any difference. Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 22 Author Report Share Posted January 22 Thank you I will change the settings and test Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 23 Author Report Share Posted January 23 Mr. Adamu, I have to apologize to you first. I set the pull-up resistor to the G4X pull-up setting.This was a mistake.It seems that I left it as it was when I took over from motec to G4X.At that time, there was only motec's data sheet.And it is the same sensor as zf company. I didn't even know about that, so I connected the input with the 8V sensor-specified resistor of 1.6kΩ, without the g4x pull-up, and ran the trigger scope. I would appreciate it if you could check it when you have time https://drive.google.com/file/d/1CFSMt0ATbR9hsVhaH4c60saDg5dPHjP7/view?usp=share_link no start https://drive.google.com/file/d/1eQj9OYxbsexLj9QJ0IWNcILgpIt5on9P/view?usp=share_link idle https://drive.google.com/file/d/1cedieLdRsmQaG5kN4qEkjacaiunCM5Et/view?usp=share_link 2000rpm https://drive.google.com/file/d/1brVk1ZmTasuND3trONIs5knXbfWivKRp/view?usp=share_link 5000rpm Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 24 Report Share Posted January 24 I dont see any problems in any of those scope captures, they all look good an trigger 1 state shows the ecu has synced. Do you still have starting issues? If so, can you try to get another log of a start attempt where it does not fire. k fuku 1 Quote Link to comment Share on other sites More sharing options...
keizsr Posted January 24 Author Report Share Posted January 24 ありがとう安心トリガー2も大丈夫ですか?12V入力G4Xプルアップを転用したSR20カムセンサーがONです コールド初期スタートについて 指定設定に変更した後は7°CでOKだったのですが、一度停止して再起動すると、最初の爆発後はリッチで回転が上がらなかった。現在調整中です。私は一度以前の症状がありましたが、私はそれを記録するのを忘れました。機会があればログを忘れません Quote Link to comment Share on other sites More sharing options...
keizsr Posted February 23 Author Report Share Posted February 23 こんにちは、また発生しました。クラッチ操作ミスでエンジンが止まりました。そのままクランキングしましたが、始動しませんでした。イグニッションをオフにして、再度オンにしました。ログとアップグレードされたスターター モーターでトリガー スコープ を送信します。 https://drive.google.com/file/d/1VIUaYZvmibFXO_-7Ac_Av8PRYy4VWq6U/view?usp=share_link https://drive.google.com/file/d/12W2QrvF4sViy0TrC1N1LQCuHLXz28xmW/view?usp=share_link https://drive.google.com/file/d/1eZsHIELbpbPxbRjn3gqppDE_yMik9wWV/view?usp=share_link map k fuku 1 Quote Link to comment Share on other sites More sharing options...
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