Operation Section
1
–
90
9.4 Image Of Combustion Chamber Interior
z With conventional injection methods, because an excessive quantity of fuel was injected in the initial period, the explo-
sion pressure rose excessively, leading to the generation of noise such as engine knocking sounds. To improve this
condition through pilot injection, initially only the necessary and adequate quantity of fuel is injected. At the same time,
the combustion chamber temperature is raised, and main injection combustion is assisted while working to prevent
noise and vibration.
Conventional Injection
Pilot Injection
Q000924E
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