Cylinder head and Cylinder block

[ruzfactor]

can some one please refer me operating conditions for cylinder head and block of diesel and gasoline engines. I have searched through google but couldn't find any definite info on that. I need numerical values of temperature, pressure that head and block must withstand.

[Ranger Mike]

welcome..
you ask two things
operating conditions for gas IC and diesel engine
then you asked for worst case conditions...
may i ask..what is purpose of your post?

[ruzfactor]

Actually I'm writing a case study report on cylinder block and head materials development. I need to provide a brief background such as operating environment, mechanical loading and failure modes of cylinder block and head. I have done my research on materials but I couldn't find any specific data or range of data on these background topics. I really need help here.

[brewnog]

What sort of engines?

Cylinder wall and flame face temperatures might be a few hundred Celsius. Peak cylinder pressure might be between 80 - 200 bar. It completely depends on the type of engine, application, operating conditions etc.

[ruzfactor]

both for 4stroke gasoline engine and diesel engine cars. I really need to define operation environments that cylinder block and cylinder head normally experience.

[brewnog]

Well 'normal' falls within the bands I outlined.

[mender]

I know that a 350 cid engine that is making about 530 hp and 500 lb.ft of torque (injected alcohol Sprint car) using a block that has a cylinder wall with a casting flaw that reduces the thickness to about 0.090" will survive about two hours on the dyno before splitting ...

[ruzfactor]

what type of mechanical loadings engine blocks experience? Please explain.