Diesel engine : Kromhout Gardner 4LW 1940

[ruben]

My compression gauge fits in place of the injector. It has a non-return valve as close to where the injector nozzle would be as possible so as not to affect the combustion chamber volume. The valve currently doesn’t seal as well as I would like.

In the video clip the pressure is reaching more than 40 bar but there was no clearance between the valves and the piston. I have since added a 0.5mm copper shim gasket which has reduced the pressure to 30-35 bar which is still sufficient for a cold start.

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I have used two different types of fuel feed pump. One is a diaphragm pump based on full size practice where the pressure is maintained by a spring.


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The other is an electric pump like you are thinking of using with a pressure relief valve mounted on the injection pump to allow the fuel to circulate. The pump is rated for 12V and delivers more than enough fuel with a 5V supply.

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hello Roger

there would be plans or measurements of the fuel pump that appears in the last photo

or how the fuel pump works

 

[Roger B]

Hallo Ruben,

That pump is designed for petrol injection into the inlet of a spark ignition engine. If you are looking to build a working diesel I suggest that you start with a spark ignition engine to learn the basic techniques as well as building my test pump to understand the precision required. Please keep asking questions.

 

[ruben]

Hallo Ruben,

That pump is designed for petrol injection into the inlet of a spark ignition engine. If you are looking to build a working diesel I suggest that you start with a spark ignition engine to learn the basic techniques as well as building my test pump to understand the precision required. Please keep asking questions.

If it's worth it to me to see the fuel regulation system to implement it in my own fuel pumps

 

[ruben]

If it's worth it to me to see the fuel regulation system to implement it in my own fuel pumps

Yes, I would like to see the fuel regulation system to implement it in my own fuel pumps.

 

[minh-thanh]

Ruben !

Hallo Ruben,

That pump is designed for petrol injection into the inlet of a spark ignition engine. If you are looking to build a working diesel I suggest that you start with a spark ignition engine to learn the basic techniques as well as building my test pump to understand the precision required. Please keep asking questions.

As Roger said.
At this point I don't know if you have built any engines yet!!? I don't even know where you are from, what your experience and knowledge is like?!!??
Building a diesel engine is not just about plan , planning is only a small part, it requires a lot of experience...especially making small cylinders. Even with small ball valves it is really hard to make it completely sealed, it is crazy