EK Motor Jul 2021 (Q6)

(a) Explain, with the aid of a sketch, Thermal stress, stating how thermal stresses induced in the cylinder liner when the engine is operating (8) (b) Explain why thermal stress may be damaging to an engine cylinder (4) (c) Explain how thermal stress may be avoided in an operating engine without reducing engine power output (4)

Cylinder liner

Jul 2021 (Q6)