Kubota D1803-CR-E4 Workshop Manual page 139

MECHANISM
4. Intake and exhaust system
(1) Pre-cleaner
(2) Air cleaner
(3) Airflow sensor
(4) Turbocharger
(A) Intake air flow
1. Fresh air from the atmosphere passes through the pre-cleaner and air cleaner removing debris from the air
2. And is then compressed by the turbocharger.
3. Compressed intake air passes through the intercooler where it is cooled increasing the intake air density
NOTE
• This flow is only for D1803-CR-TIE4 and V2403-CR-TIE4.
4. This is distributed from the intake manifold to each of the cylinders.
(B) Exhaust air flow
1. Post combustion gases discharged from the combustion chamber in each cylinder are collected by the exhaust
manifold
2. Pass through the turbocharger rotating the turbine and pressurizing the intake air.
3. Hazardous components in the exhaust gas are cleaned in aftertreatment unit and the exhaust is gas discharged
to the atmosphere
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
(5) Exhaust manifold
(6) Aftertreatment unit (DPF)
(7) Intercooler
(8) Glow plug
(9) Intake manifold
(10) Combustion chamber
(A) Intake air flow
(B) Exhaust gas flow
4. ENGINE
(C) Intake system
(D) Exhaust system
(a) Exhaust gas
4-39
KiSC issued 12, 2018 A