@jasu : indeed, when cam and cranck are mechanically connected (I guess in all petrol engines
and the sofware allows to set the necessary triggers, a cam initiated spark and fuel should be possible.
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Page 18 of 20 |
| Author: | Edce [ December 12th, 2020, 6:58 pm ] |
| Post subject: | Re: Place for switches or gauges |
@jasu : indeed, when cam and cranck are mechanically connected (I guess in all petrol engines and the sofware allows to set the necessary triggers, a cam initiated spark and fuel should be possible.
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| Author: | Roger V [ December 13th, 2020, 10:31 pm ] |
| Post subject: | Re: Place for switches or gauges |
Edce, Pete I've ordered a hot end temperature sensor as used on 3D printer. Thought I may have a play with it as engine temperature sensor. Haven't thought how or where I will deploy it yet though.
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| Author: | Edce [ December 14th, 2020, 10:01 am ] |
| Post subject: | Re: Place for switches or gauges |
Roger, the place to put the sensor is the key issue here. It should warm up not too slow, but also not too quick. I guess it would be quite a study to find such place. The oil temperature increase is far too slow, the temperature increase of the cooling air inside an airbox (around the exhaust) is in fact too rapid. The place to fix would be a plce where a stabilized temperature of about 90°C should be found. Maybe fixing a small plateof a certain length to the first silencer would the job. But as said that needs a lenghty investigation. |
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| Author: | lpgo [ December 14th, 2020, 11:44 am ] |
| Post subject: | Re: Place for switches or gauges |
Edce not quite true. There are 3 things going on in a 2cv engine. Oil temp, cilinder(head) temp and exhaust temp. Most true is cilinder(head temp) so that is what you want to measure. Oil is always (sometimes minutes) behind this. Most desirable to measure is the cilinder(head) temp. So put your sensor somewhere at the cilinder(head). Exhaust temp us also good to know especcially if you turbo-ed it.. But then you need some thermo coppels.. |
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| Author: | jasu [ December 14th, 2020, 12:34 pm ] |
| Post subject: | Re: Place for switches or gauges |
Attachment: IMG_2467.JPG Tried some other places also, oil temp is wrong place to diagnose temp fot EFI, sensor between cooling fins was unreliable and "too fast" reacting to drive situations, that place on cyl head was best place, from my opinion... |
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| Author: | lpgo [ December 14th, 2020, 1:11 pm ] |
| Post subject: | Re: Place for switches or gauges |
jasu wrote: Attachment: IMG_2467.JPG Tried some other places also, oil temp is wrong place to diagnose temp fot EFI, sensor between cooling fins was unreliable and "too fast" reacting to drive situations, that place on cyl head was best place, from my opinion... I agee Jasu, also a good place for a knock sensor. |
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| Author: | Roger V [ December 14th, 2020, 2:33 pm ] |
| Post subject: | Re: Place for switches or gauges |
Jasu That looks like what I have in mind. Is that a coolant temperature sensor? would you have a part number?Geo I was thinking knock sensor there as well.
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| Author: | Edce [ December 14th, 2020, 4:29 pm ] |
| Post subject: | Re: Place for switches or gauges |
 Its the experience which tells the reeal thing
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| Author: | jasu [ December 14th, 2020, 4:32 pm ] |
| Post subject: | Re: Place for switches or gauges |
I don't have any part number, but exactly same sensor I have seen on PSA -engines (Ax, Bx, Cx, Xantia, Xm) from 80's, 90's, also BMW from same era and also from some Range Rovers from 90's and also Land Rover Discovery II -99...-02 |
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| Author: | Roger V [ December 14th, 2020, 8:47 pm ] |
| Post subject: | Re: Place for switches or gauges |
@Jasu, this is so interesting. So, how long has that been working? How are you displaying the temperature? What do you use for a gauge? Edit And ...... did you just put a thread on the sensor, or did you have to cut it back first?
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