John Deere约翰迪尔强鹿柴油机进气和排气系统维修技术资料

John Deere约翰迪尔强鹿柴油机进气和排气系统维修技术资料操作

A—Turbocharger C—Intake Side of Cylinder D—Outside Intake Air E—Exhaust Air

B—Air Cleaner Head

NOTE: Two-valve head engine shown. Air intake and

exhaust of four-valve head engine is similar.

Engine suction draws dust-laden outside air (D)

through an air inlet stack into the air cleaner (B). Air is

filtered through dry type primary and secondary

(safety) filter elements in the air cleaner canister.

Clean air travels through the air intake hose to the

turbocharger (A) and into the intake side of the

cylinder head (C).

Exhaust (E), drives the turbocharger to deliver a larger

quantity of air to meet the engine requirements than

what could be delivered under naturally aspirated

(non-turbocharged) conditions.

On some engines, an air-to-air aftercooler cools the

turbocharger compressor discharge air by routing it

through a heat exchanger before it enters the engine.

The heat exchanger uses no liquid coolant but relies

on air flow to cool the charge air.