SsangYong Korando III (2010 year). Service manual — part 43

04-7

0000-00

2313-15

HFM (Hot Film Air-Mass) sensor

HFM sensor, version 6

* For more information, refer to Chapter "Engine

Control".

2313-01

Air cleaner assembly and
resonator

04-8

3. INPUT/OUTPUT OF INTAKE SYSTEM

04-9

0000-00

4. OPERATING PROCESS

Work Flow

▶

04-10

1) Types of swirl

Swirl: One cylinder has two intake air ports, one is set horizontally

and the other one is set vertically. Swirl is the horizontal air flows in

cylinder due to the horizontal intake air ports.

Tumble: Tumble is the vertical air flows in cylinder due to the vertical

intake air port

Squish: Squish is the air flows due to the piston head. Normally, this

is appears at the final process of compression. In CRDi engine, the

piston head creates the bowl type squish.

2) Swirl control

In DI type diesel engine, the liquefied fuel is injected into the cylinder directly. If the fuel is evenly

distributed in short period, the combustion efficiency could be improved. To get this, there should be

good air flow in cylinder. In general, there are two intake ports, swirl port and tangential port, in each

cylinder. The swirl port generates the horizontal flow and the tangential port generates the longitudinal

flow. In low/mid load range, the tabgential port is closed to increase the horizontal flow. Fast flow

decreases the PM during combustion and increases the EGR ratio by better combustion efficiency.