Page 285 - Air pollution and greenhouse gases from basic concepts to engineering applications for air emission control

262 9 In-combustion Air Emission Control

Bore
Piston

Cylinder
wall
Stroke

Connecting
rod

θ
crank Crank
r angle

Fig. 9.2 Schematic diagram of a four-stroke piston engine

Fig. 9.3 Four-stroke piston engine cycle (Wihipedia.org)