Internal combustion engine transfer function (request)

[ismagtz]

Hello everyone, i need to find reported transfer functions of internal combustion engines for a project, i would appreciate the model of a four cylinder engine.
If anyone knows about a book or some article which i can use, please let me know.
thank you very much.
the topic is related with dynamics and control.

 

[berkeman]

Hello everyone, i need to find reported transfer functions of internal combustion engines for a project, i would appreciate the model of a four cylinder engine.
If anyone knows about a book or some article which i can use, please let me know.
thank you very much.
the topic is related with dynamics and control.

Welcome to the PF.

Transfer function from what to what? Gasoline to acceleration?

 

[ismagtz]

Welcome to the PF.

Transfer function from what to what? Gasoline to acceleration?

Thank you very much.

I need a transfer function from the air inlet to RPM or Hp, considering a constant ideal air/fuel ratio (maybe i would need a transfer function for that).

Also another one from RPM to exhaust gas flux, in this one I'm not quite sure what is really convenient to calculate the exhaust gas flux, rpm or Hp?.

I need all of this to elaborate a control loop for a twin charged system.

 

[berkeman]

Thank you very much.

I need a transfer function from the air inlet to RPM or Hp, considering a constant ideal air/fuel ratio (maybe i would need a transfer function for that).

Also another one from RPM to exhaust gas flux, in this one I'm not quite sure what is really convenient to calculate the exhaust gas flux, rpm or Hp?.

I need all of this to elaborate a control loop for a twin charged system.

I did a Google search on Thermodynamics of Internal Combustion Engines, and got a lot of good hits. Have a look through the hit list to see if you start finding what you are looking for:

https://www.google.com/search?sourc...p..0.0l2j0i22i30l3.0.0.0.6941...0.FbKAEUD0TZo

:-)

 

[ismagtz]

I did a Google search on Thermodynamics of Internal Combustion Engines, and got a lot of good hits. Have a look through the hit list to see if you start finding what you are looking for:

https://www.google.com/search?sourceid=navclient&aq=&oq=thermodynamics of internal combustion engines&ie=UTF-8&rlz=1T4GGLL_enUS301US302&q=thermodynamics of internal combustion engines&gs_l=hp..0.0l2j0i22i30l3.0.0.0.6941...0.FbKAEUD0TZo

:)

I will, thanks.

Searching around i found this book, "Engine Modeling and Control" Author: Rolf Isermann, it may have some transfer functions
here's a preview of the book in case someone is interested:

http://link.springer.com/book/10.1007/978-3-642-39934-3

 

[Mh ghrad]

Dear All

this is my problem too, We have an engine test bench based on torque controlling dynamometer, I don't know how to have the transfer function for the shaft
I guess we need a transfer function of force to speed, we only have access to ECU to send the pedal load and that it! We have to have a specific rotation with that!
Please let me know if anyone have any suggestion how to control with PID and transfer function! I am confused ( I am a mechanical engineering and don't know anything from controlling )