Deutz F2L912 Governor setting

[PieterZA]

Hello

I have bought a generator with a Deutz F2L912 engine on. I cannot find a manual or mechanic to help me set the governor to work correctly. I have searched the forums, but have not found details about what adjusts the max no load rpm and the governor response.

Engine starts very easy and runs smooth.

The engine surges, changes rpm or takes long for rpm to come back to idle. When load is applied, the rpm just drops.

I have found the idle adjust and max throttle adjust.

Any advise or links to a manual that explains it will be greatly appreciated!

Regards

Pieter

 

[Bungartz_T8DA]

Dear Pieter,
it looks that the engine is set to a fixed rpm. What is the use of the engine? As the flywheel has a comparably large mass, changes in idle may not be that dynamic.
You may post a short video.
Kind regards, Thorsten

 

[Deutz45nullfuenf]

Hi, its connected to a generator so fixed RPM makes sense.

 

[PieterZA]

Dear Pieter,
it looks that the engine is set to a fixed rpm. What is the use of the engine? As the flywheel has a comparatively large mass, changes in idle may not be that dynamic.
You may post a short video.
Kind regards, Thorsten

Hi Bungartz

The engine is used on a 15kva genset. RPM is fixed with the throttle lever, but as soon as load (around 2kw) is supplied on the alternator, the rpm just drops until the AVR shuts off power.

If I loosen the throttle and manually rev the engine, it takes about a minute to return to idle. So I suspect that the governor is not working correctly at keeping the rpm stable or returning it to idle.

I cannot post a vid now, as I have removed the pump plate to inspect the inside. The previous owner had the pump reconditioned, but they did not have a dyno to test the engine response after calibration.

Do you perhaps know what the big locknut on the outside adjusts? I will post a pic.

 

[PieterZA]

Hi, its connected to a generator so fixed RPM makes sense.

Ys, but with locked throttle lever the rpm just drops when load is applied to the generator. The governor does not respond to keep the rpm's constant under load changes.

 

[PieterZA]

Dear Pieter,
it looks that the engine is set to a fixed rpm. What is the use of the engine? As the flywheel has a comparatively large mass, changes in idle may not be that dynamic.
You may post a short video.
Kind regards, Thorsten

I have fitted the pump again.

Please see the slow response to get back to 1500rpm in the video

WhatsApp Video 2022-07-16 at 4.28.59 PM.mp4

 

[Deutz45nullfuenf]

Videos can only be added as YouTube Link.
For your link i am asked to log into onedrive.

 

[PieterZA]

Videos can only be added as YouTube Link.
For your link i am asked to log into onedrive.

I hope this one works

 

[Bungartz_T8DA]

Mmh, thats not ok as it is working now. I had the problem that the RPM was always low and there was no response to the throttle. In the end it was the fuel pump that was defect and caused the problem. Does the engine receives enough fuel? THe governor itself is easily constructed with not a lot of pieces that may cause problems. Would check the fuel site.

 

[PieterZA]

Mmh, thats not ok as it is working now. I had the problem that the RPM was always low and there was no response to the throttle. In the end it was the fuel pump that was defect and caused the problem. Does the engine receives enough fuel? THe governor itself is easily constructed with not a lot of pieces that may cause problems. Would check the fuel site.

I believe the engine receives enough fuel. Fuel pump was rebuild just before I bought it. New filter, system bled.

If I loosen the throttle, the engine responds instantly when I rev it manually. What I did notice is that there is quite thick sealant under the gasket that seals the pumpplate to the body.

The lever responsible to move the pumps are stiff if no pressure is applied to the cam followers. One theory is that the sealant and gasket is too thick and the cam followers does not make contact to the cam, thus the lever moves "sticky" and the result is a slow response.

I just don't know what all the settings are and what adjusts in witch way. Manuals and or mechanics that know these engines are close to impossible to find in South Africa.

 

[schluetel]

Ich habe ein Werkstatthandbuch auf englisch, das hat allerdings 18,5 MB. Hast Du Google-Drive oder ähnliches?

I have a workshop manual in English, but it is 18.5 MB. Do you have Google Drive or something similar?

Mark

 

[PieterZA]

Ich habe ein Werkstatthandbuch auf englisch, das hat allerdings 18,5 MB. Hast Du Google-Drive oder ähnliches?

I have a workshop manual in English, but it is 18.5 MB. Do you have Google Drive or something similar?

Mark

Hi Mark

That is awesome news! I do have Google Drive and OneDrive yes.

Thank you!

 

[schluetel]

Can you send me a link? My English is not so good!

Mark

 

[PieterZA]

Can you send me a link? My English is not so good!

Mark

My email adress is **********

You can upload the file to your Onedrive and then share it with my email adress.

I will try translate:

Meine E-Mail-Adresse lautet **********

Sie können die Datei auf Ihr Onedrive hochladen und dann mit meiner E-Mail-Adresse teilen.

 

[schluetel]

You have mail!
I hope it works!

Mark

 

[PieterZA]

You have mail!
I hope it works!

Mark

Manual received! Thank you very much! I have some reading to do now...

Will report back here on what I find

Thank you very much!

Regards

Pieter

 

[Bungartz_T8DA]

Great! Is there a description of the injection system in? I also have a manual, however, adjustments on the injection system are not descripted at all.

The thick sealing mass is not correct at that place. Only a thin paper is correct. However, cannot imagine that the trouble comes from that. If the cams touch the plunger the lever will be free.

 

[PieterZA]

Great! Is there a description of the injection system in? I also have a manual, however, adjustments on the injection system are not descripted at all.

The thick sealing mass is not correct at that place. Only a thin paper is correct. However, cannot imagine that the trouble comes from that. If the cams touch the plunger the lever will be free.

I read most of the 419 Page manual. but the settings on the pump and governor is not covered. Only injection timing is covered. And that is not the problem.

I have removed the pumpplate again and removed all gasket and gasket maker. Gently fitted the plate back without a gasket, slowly turned the engine, but then the tolerances are too tight. My father is busy making a gasket now.

At this stage everything in the pump seems fine, I strongly believe it is adjustments that is needed. Just don't know how they are adjusted.

 

[Demian]

Hello Pieter,

I'm not a specialist in engine technology, but when reading your problem, I assume there is a mistake in reasoning.

A generator must have a constant speed so that there is no manual change. (the speed must not change from start to stop)

This is absolutely necessary for a constant number of hearts!

In order to ensure this with every load, it is necessary to readjust the speed controller.

The speed controller of your motor is blocked, so that it is not possible to readjust it.

I assume that a speed controller was removed here (for whatever reason) and the speed was set mechanically.

For light loads or just some lighting, that might be enough, but not for heavier loads.

I found a generator with built-in post-control.



This one is controlled from the inside of the motor, but yours is not intended for this, so a separate controller is necessary.

Greeting Demian

I translated the text with Google and don't know how useful it comes across.

 

[PieterZA]

Hello Pieter,

I'm not a specialist in engine technology, but when reading your problem, I assume there is a mistake in reasoning.

A generator must have a constant speed so that there is no manual change. (the speed must not change from start to stop)

This is absolutely necessary for a constant number of hearts!

In order to ensure this with every load, it is necessary to readjust the speed controller.

The speed controller of your motor is blocked, so that it is not possible to readjust it.

I assume that a speed controller was removed here (for whatever reason) and the speed was set mechanically.

For light loads or just some lighting that might be enough, but not for heavier loads.

I found a generator with built-in post control.

Anhang anzeigen 189449

This one is controlled from the inside of the motor, but yours is not intended for this, so a separate controller is necessary.

Greeting Demian

I translated the text with Google and don't know how useful it comes across.

Hi Demian

Thank you very much for your input.

As far as I understand it, the governor on the inside of the pumpplate should keep the RPM at a constant 1500 under various loads. The throttle is not directly connected to the fuel supply in any way. It only preloads the governor spring, thus increasing engine RPM.

Please see pic of inside of pumpplate. It works on the same principle as the picture you shared.

Regards

Pieter