work in progress Split timing calculation for Rotary engine

It's all about the code!
Post Reply
efidabbler
Posts: 3
Joined: Wed Feb 05, 2014 2:37 pm
Location: Midwest

Split timing calculation for Rotary engine

Post by efidabbler »

Hi, I am a rotary engine fan and would like to write the code for split ignition timing. I have some previous experience with engine position algorithms. If no one objects, or it is already done, I will work on it. Let me know.

M4
User avatar
AndreyB
Site Admin
Posts: 14292
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: Split timing calculation for Rotary engine

Post by AndreyB »

That would be amazing :)

I guess the fancy way would be to fork from https://github.com/rusefi/rusefi and do it the fancy way - with all the benefits of git.

To be honest I know exactly nothing about how rotary engine should be controlled, but I am here if you would have questions/ideas/suggestions on how to hack this logic into the existing stuff.

Is there a 101 on "split timing calc" anywhere on the web?
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
kb1gtt
contributor
contributor
Posts: 3758
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA

Re: Split timing calculation for Rotary engine

Post by kb1gtt »

Good to hear from you, and welcome along. I have some experience with experimental not wankle rotary. I have interest in learning more, and I know some people who would also enjoy learning more. Feel free to ask questions and make comments.
Welcome to the friendlier side of internet crazy :)
efidabbler
Posts: 3
Joined: Wed Feb 05, 2014 2:37 pm
Location: Midwest

Re: Split timing calculation for Rotary engine

Post by efidabbler »

Look up Paul Yaw he has a pretty good timing diagram.

Bassis:
2 rotor engines only for now. If it works, then we can extend it to three rotors.
Distributor type position sensor with leading spark position indication and engine speed signal. Two vr freq inputs
No crank trigger type for now sorry 95 and up turbo rotarys
Two or three spark out puts logic level. There are plenty of drivers out there and I don't like high current in the ecu. That way can run stock or coil near plug with LS2 coils.
Leading plugs are driven waste spark. This has been proven on reverse engineered second generation 13 b
lead plug timing is always greater deg BTDC than trailing timing. so I'm thinking that we calculate and track the lead timing, then just subtract a split timing table value from the lead timing as the trailing plug timing. a small 8 x 8 table would provide enough detail for the split. also, we can double check to. Make sure that the trailing timing is never more DBTDC than the leading plug timing.

Only one spark event per spark plu g. sorry noMSD effect.

so I better go unzip some software file. what is the current working version. Oh I can work with subversion.

M
User avatar
AndreyB
Site Admin
Posts: 14292
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: Split timing calculation for Rotary engine

Post by AndreyB »

It would be wrong to use the zip files.

You can use subversion, but Git (which is a pain) might be a better option for a larger project like yours - this case you can have your own version of the code on the one side publicly available and you would be able to sync latest changes, on the other side not merge into main code base until it's ready to be merged.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
komodo
Posts: 1
Joined: Sun Jun 21, 2015 6:45 pm

Re: Split timing calculation for Rotary engine

Post by komodo »

hello everybody,
is there a work in progess on rotary engine ?
Best regards.
User avatar
AndreyB
Site Admin
Posts: 14292
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: Split timing calculation for Rotary engine

Post by AndreyB »

Not really :(
Last visited:Thu Sep 04, 2014 12:06 am
If you have a test mule and you can really explain it like I am five, I might be able to implement it without access to a Mazda :)
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
kb1gtt
contributor
contributor
Posts: 3758
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA

Re: Split timing calculation for Rotary engine

Post by kb1gtt »

If you have a test mule, and you know the crank wheel signal, the rest can probably be done reasonably easily. However it hasn't been done yet and there would be a need for some software development.
Welcome to the friendlier side of internet crazy :)
User avatar
AndreyB
Site Admin
Posts: 14292
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: Split timing calculation for Rotary engine

Post by AndreyB »

efidabbler wrote:
Sat Aug 30, 2014 12:04 am
Hi, I am a rotary engine fan and would like to write the code for split ignition timing. I have some previous experience with engine position algorithms. If no one objects, or it is already done, I will work on it. Let me know.

M4
Hello there :) How is it going?

What rotary are you playing with? how is it going?

We are at the edge of rotary progress with https://github.com/rusefi/rusefi/pull/2932
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Post Reply