Yanmar 4JH3BE - 1. Intake System

Chapter 4 Intake and Exhaust System
_1_. I_n_t_ak_e_an_d_E_x_h_a_u_st ____ Sy __ s_t_em _______________________ 3,4JH3(B)(C)E
1. Intake System
Air enters in the intake silencer mounted at the end of the
intake manifold, is fed to the intake manifold and then
on
to each cylinder.
Exhaust gas goes into the exhaust manifold (in the fresh
water tank) mounted on the cylinder head discharge.
After cooling
it enters the mixing elbow which is directly
connected wilh the exhaust manifold, and
is discharged
from the ship along with waste cooling water.
Intake system
Intake air silencer
When the inside of the intake manifold becomes dirty,
intake resistance is created reducing engine power.
Periodically check the inside
of the intake manifold. In the
same way, the net portion of the intake air silencer should
be checked for dirt periodically and cleaned.
When the intake manifold
is being attached to the cylinder
head, the attachment surfaces should
be checked for dirt
and cleaned. Care should also
be taken to insure there is
no air leakage.
Do not operate with the intake air silencer removed.
~a
Cylinder head
Printed in ]:apan
HINSHI-H8009
0
Intake manifold
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