Introduction to Engineering Thermodynamics

Internal Combustion, the fundamentals, are the powerplant in your car. The term Internal Combustion is from the fuel/air mixture combusting , actually exploding is more accurate in the "cylinder" which when the fuel/air is ignited by the spark plug (we are discussing gasoline engines here) . The piston is in the cylinder. While running, the piston is forced up with both valves closed and ignited, and the explosion drives the piston down, to a crankshaft, that creates torque on the crankshaft, and therefore a spinning motion converted from a vertical motion of the piston. I have always b…

the 1st and 2nd law are used for the calculation of the fuel of the engine and by them you know the state and fuel properties (press.,temp.,vol.) for each strock of the engine
from press. we can find and knw the engine power cause this press. is what push the piston ond provite the power
the temp. is important because it is needed to be known to know the amount of cooling needed and allso because is is one of the knock causes
the volume needed when detirmining the volumatric eff. (which effect several things in the engine)