Two sets of experiments were conducted with
conventional and TBC coating of zirconiumdioxide
(ZrO2) and titanium dioxide (TiO2) coated pistonon
the piston crown. In each set of tests, readings of
engine speed, load torque, engine power, fuel
consumption, exhaust gas temperature, gas emission
concentration, readings were taken with various
engine loads and various engine speeds (1000 to
4500rpm).