Search found 34 matches
- Thu Sep 14, 2023 5:59 pm
- Forum: Dev: Hardware
- Topic: VR + knock module
- Replies: 69
- Views: 178662
Re: VR + knock module
@AndrejB: ...well, priorities change over time, too... I would never try to sense the Cam-Teeth wit VR; there are good reasons why most of the OEMs don't do. For the commonality between VR-1wire and Hall, I guess a circuitry with 1 Opamp should do (incl. adaptive thresh). For VR-2wire maybe 3 Opamps...
- Thu Sep 14, 2023 3:29 pm
- Forum: Dev: Hardware
- Topic: VR + knock module
- Replies: 69
- Views: 178662
Re: VR + knock module
@AndrejB: ...without being involved in the creation of either of both circuits... TMHO Smoczy's circuit provides following advantages compared to the VR-module, that you show: 1. It is simpler and involves less circuitry, which leads to... ...lower cost ...smaller space 2. It has an adaptive functio...
- Sat Apr 30, 2022 10:13 am
- Forum: Dev: Software
- Topic: Software knock processing
- Replies: 70
- Views: 76644
Re: Software knock processing
@Simon: please find some comments in the attached modified presentation. There are mainly three things, that I disagree with: 1. Transient knock can be very strong and thus need to be avoided. Transient knock cannot be handled by sensor-based knock detection, because it simply is too slow, as the re...
- Sat Apr 30, 2022 9:07 am
- Forum: Dev: Hardware
- Topic: Ion Sense
- Replies: 194
- Views: 214526
Re: Ion Sense
@JohnP: very interesting paper from Visteon. The findings were mostly well-known state-of-technology. If you only look at the pure detection of knock-occurrence, there is a lot arguments for ion-sensing. There are three alternative solutions know: vibration-based (knock sensor), ion-current-based, c...
- Mon Mar 28, 2022 10:47 am
- Forum: Dev: Software
- Topic: Software knock processing
- Replies: 70
- Views: 76644
Re: Software knock processing
Thanks for clarification.
Looks like you (the "resEFI knock-team") are still at the very beginning of knock-detection,
and you want to find your own way.
Anyway: if you need advice for a proven solution, contact me...
Looks like you (the "resEFI knock-team") are still at the very beginning of knock-detection,
and you want to find your own way.
Anyway: if you need advice for a proven solution, contact me...
- Sun Mar 27, 2022 9:37 am
- Forum: Dev: Software
- Topic: Software knock processing
- Replies: 70
- Views: 76644
Re: Software knock processing
@Simon: you may be right; I know quite a bit about knock-detection and control, but so far I haven't found the information about the rusEFI knock-detection concept documented anywhere in this forum. So I may have misinterpreted the expression "baseline". Nevertheless: where can I find my b...
- Sat Mar 26, 2022 11:28 pm
- Forum: Dev: Software
- Topic: Software knock processing
- Replies: 70
- Views: 76644
Re: Software knock processing
@simon: what makes you think, that there is ONE baseline? The noise-level, depends on a variety of parameters (e.g. engine speed&load, cylinder-no., sensor placement, engine aging, valve timing and valve lash, etc.). Measuring a baseline during deceleration does not make any sense, as there will...
- Mon Feb 07, 2022 10:10 am
- Forum: Dev: Hardware
- Topic: Ion Sense
- Replies: 194
- Views: 214526
Re: Ion Sense
@OrchardPerformance: Looking to the diagram, the black trace is the typical shape of an ion-sense native signal, with the blue trace being combustion pressure as reference. It is important to know, that you don't get this perfect shape under all conditions of engine operation: mid/high load operatio...
- Mon Jan 24, 2022 6:36 pm
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
OK...got it now.
Thanks for clarification.
Thanks for clarification.
- Mon Jan 24, 2022 9:15 am
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
Hmmm...
I still don't understand the rational behind this doing.
Has a Harley engine got two spark-plugs, so he can replace one?
If he is doing cranking- (motored-)Test without combustion only, what is it good for to know TDC in motored operation?
I still don't understand the rational behind this doing.
Has a Harley engine got two spark-plugs, so he can replace one?
If he is doing cranking- (motored-)Test without combustion only, what is it good for to know TDC in motored operation?
- Sun Jan 23, 2022 8:33 pm
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
Its not that there is not access, its that there is no access without pulling the side cover and fitting a degree wheel which is the standard approach but was deemed to much bother iirc. The older ones had a plug in the case to check timing left over from the points days but on the new designs that...
- Sun Jan 23, 2022 7:40 pm
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
That's why, I think this forum (and most others) needs an engine analysis chapter and a system design chapter. The conditions of a specific engine need to be clarified in a separate activity and not in a software or (ECU)hardware chapter, and within it should be documented in a kind of engine-datash...
- Tue Jan 18, 2022 7:52 pm
- Forum: Dev: Hardware
- Topic: microRusEFI
- Replies: 389
- Views: 627476
Re: microRusEFI
Hi guys,
just looking through MRE. Looks really nice for 4-cyl applications.
You decided to use TLE8888 for it.
Did you find a reliable distributor for the procurement of this chip?
I only found Digikey, who seem to be willing to sell small numbers of it.
Is there any other second source?
kr, sepp2gl
just looking through MRE. Looks really nice for 4-cyl applications.
You decided to use TLE8888 for it.
Did you find a reliable distributor for the procurement of this chip?
I only found Digikey, who seem to be willing to sell small numbers of it.
Is there any other second source?
kr, sepp2gl
- Tue Jan 18, 2022 9:30 am
- Forum: Dev: Hardware
- Topic: Ion Sense
- Replies: 194
- Views: 214526
Re: Ion Sense
@mck1117:
...any reply?
What do you mean by "...looks as expected"?
What was your expectation?
kr, sepp2gl
...any reply?
What do you mean by "...looks as expected"?
What was your expectation?
kr, sepp2gl
- Tue Jan 18, 2022 8:40 am
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
@nmstec:
"for locating TDC"?
Why would you want to apply such an invasive technology just for locating TDC?
"for locating TDC"?
Why would you want to apply such an invasive technology just for locating TDC?
- Tue Jan 18, 2022 8:37 am
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
Well... ...the world is definitely not separated in ECU-software and ECU-hardware. I like to see it Top-Down rather than Bottom-up. Engine control is multi-domain. It starts with understanding engine-functionality, combustion-system, thermodynamics. It continues with the system perspective of engine...
- Mon Jan 17, 2022 8:58 pm
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
...did anybody continue applying a diesel pressure sensor to a gasoline engine?
Or is this a dead thread?
Or is this a dead thread?
- Fri Jan 07, 2022 6:42 pm
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
Nope...You are perfectly right. I propose to move this exchange into ./User Support/You and your Build/"Multi-Throttle Arragements" as new tread. But... ...I also propose to make "Introduction" an own chapter of ./User Support. This is the entry door for each and every NewBe into...
- Fri Jan 07, 2022 5:48 pm
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
Ciao!
Like always the truth is somewhere in-between.
What is the intent for your 12-channel pressure aquisition? Why are you doing it?
kr, sepp2gl
Like always the truth is somewhere in-between.
What is the intent for your 12-channel pressure aquisition? Why are you doing it?
kr, sepp2gl
- Fri Jan 07, 2022 9:14 am
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
Congrats!
"Is there life without a Ferrari? Yes, but it doesn't make any sense."
I guess you gave your life quite some sense.
Did you tell your left cylinder-bank to stop smoking?
What was the reason? Cylinder-head gasket?
"Is there life without a Ferrari? Yes, but it doesn't make any sense."
I guess you gave your life quite some sense.
Did you tell your left cylinder-bank to stop smoking?
What was the reason? Cylinder-head gasket?
- Thu Jan 06, 2022 7:25 pm
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
ONLY 4?
Mine is looking like this:
Mine is looking like this:
- Thu Jan 06, 2022 4:52 pm
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
...thx for clarification. I will do. Maybe I misunderstood AndreyB's question about my own DIYEFI project. I falsely related it to DiyEFI-forum of Fred Cooke (FreeEMS). Actually I intended to operate my Honda-motorcycle CB750K, a 4-cyl. 750ccm by a DIY-electronic. Purpose1: MAP-based ignition, synch...
- Tue Jan 04, 2022 7:42 pm
- Forum: Tuning Support: Making it Run
- Topic: MAF vs Speed Density, why do we prefer which one?
- Replies: 21
- Views: 20837
Re: MAF vs Speed Density, why do we prefer which one?
Hi guys and happy new year! just looking through some of your discussion about speed-density ( SPD ) versus mass-airflow ( MAF ). For the scope of stoichometric combustion (lambda=1) both have some pros and cons. MAF pros: - direct and precise massflow into the engine (at least for steady-state engi...
- Mon Jan 03, 2022 8:20 pm
- Forum: You and your build
- Topic: Introduction
- Replies: 16
- Views: 9352
Re: Introduction
...not really.
I didn't follow DiyEFI frequently during the last 10 years...
What is a "Slack Channel"?
Why should I join there?
I didn't follow DiyEFI frequently during the last 10 years...
What is a "Slack Channel"?
Why should I join there?
- Mon Jan 03, 2022 7:17 pm
- Forum: Misc
- Topic: rusEfi presentation
- Replies: 3
- Views: 8245
Re: rusEfi presentation
@AndreyB: I think, some statements from "About rusEFI" should be part of this presentation. Especially the scoping "...a GPL open-source engine control unit for gasoline port-injected internal combustion engines. This project involves embedded hardware, software, and engines. ... ...T...
- Mon Jan 03, 2022 9:38 am
- Forum: Dev: Hardware
- Topic: Ion Sense
- Replies: 194
- Views: 214526
Re: Ion Sense
Can you tell, what functionality is covered by IS on Skyactive-G?
Is it more basic misfire & knock detection?
Or does Mazda use advanced functions?
Is it more basic misfire & knock detection?
Or does Mazda use advanced functions?
- Mon Jan 03, 2022 9:31 am
- Forum: Dev: Software
- Topic: Software knock processing
- Replies: 70
- Views: 76644
Re: Software knock processing
So far I do not fully understand your knock detection algorithm yet.
- How is knock discriminated from noise level after filtering and windowing?
- What is done, after knock occurrence has been detected?
- How is your knock-control strategy and algorithm?
kr, sepp2gl
- How is knock discriminated from noise level after filtering and windowing?
- What is done, after knock occurrence has been detected?
- How is your knock-control strategy and algorithm?
kr, sepp2gl
- Mon Jan 03, 2022 9:20 am
- Forum: Dev: Hardware
- Topic: VR + knock module
- Replies: 69
- Views: 178662
Re: VR + knock module
@mck1117: Where are those findings posted? Detected real knock that was enough to push out my head gasket, but light enough to not pit the cylinder head. See: https://rusefi.com/forum/viewtopic.php?t=1469 What do you mean by that statement? Your detection was capable detecting knock, that damaged yo...
- Sun Jan 02, 2022 7:23 pm
- Forum: Dev: Hardware
- Topic: VR + knock module
- Replies: 69
- Views: 178662
Re: [help needed] VR + knock module
Hi guys, looking through this thread, this one seems to be quite controversal. And I would like to learn about the experience, that you made with the different approaches. [edit] Most knock sensor chips are reasonably blah. The bandpass filters are poor and the energy detection circuits are limited....
- Sun Jan 02, 2022 5:58 pm
- Forum: Dev: Hardware
- Topic: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
- Replies: 77
- Views: 128108
Re: cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor
Hi Guys, besides Beru, Sensata and Hidria also Optrand would be a good choice for such a sensor. A couple of years ago also Bosch and Continental worked on in-cylinder pressure sensors both for diesel engines with integrated glow-plugs and "stand-alone" for gasoline engines. But I don't kn...