PRIN. OF INTERNAL COMBUSTION ENGINES - OD1619 LESSON 1/TASK 2
(2) During the compression stroke, the swirling motion of the air continues as
the temperature in the chamber increases (figure 37, view B, on the previous page).
(3) As the fuel is injected, approximately 95 percent of it is deposited on the
head of the piston; the remainder mixes with the air in the spherical combustion
chamber (figure 37, view C).
(4) As combustion begins, the main portion of the fuel is swept off the piston
head by the high-velocity swirl that was created by the intake and the compression
As the fuel is swept off the head, it burns through the power stroke,
maintaining even combustion and eliminating detonation (figure 37, view D and E).
This concludes the explanation of the gasoline and diesel internal combustion
engines. In the next lesson, operational information on the subsystems of internal
combustion engines will be discussed.