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2019/04/10 - [자동차 & 선박 디젤 엔진 ] - INSTRUCTION MANUAL HEAVY DIESEL ENGINES!!

2019/04/18 - [자동차 & 선박 디젤 엔진 ] - Ship Engine Basic Configuration

It's a good article to read together.

Turbo blower

This is an exhaust gas turbine type supercharger manufactured.

Simple in construction, this device consists of an assembly of 3 cases, and a radial type turbine and acentrifugal blower built inside.

Compressed air is blown into a cooling jacket by the blower, and blow out of small holes to the back of the turbine wheel. Thus triple effects of heat insulation, turbine wheel cooling and exhaust gas sealing can be obtained.

The center case has 2 bearings which are enclosed by a bearing chamber to prevent, lubricating oil leakage.

It is further enclosed by an air chamber which is exposed to the atmosphere. There-fore, the high-pressure air leaking in small amounts during high-speed engine operation will not enter the bearing chamber.

Thus, ' the oil sump in the engine will be kept free from pressure rise.

Even when the engine is running at low speed with the blower air pressure at low level, the lubricating oil will not be contaminated by the exhaust gas.

The center case has mounting feet on the bottom. The blower case of aluminum alloy and the turbine case of heat-resistant special cast iron are installed on the center case.

The rotor shaft is supported by 2 special, floating sleeve type bearings in the bearing box.

The bearings are lubricated by the pressure oil coming from the engine through the engine lubricating oil filter.

When the lubricating oil reaches the bearings, it is recirculated via lubricating oil outlets in the center case mounting feet to the engine oil sump for reuse.

Air cooler

The air cooler is installed on the left side of the crankcase. The air which comes from the turbo blower enters the air cooler to be cooled to the required temperature before entering the cylinder head. This air cooler delivers great performance, having sufficient cooling area and high thermal efficiency as appropriate to the intended use.

Exhaust manifold

The exhaust manifold is made of cast iron. Engines with a turbo blower have dual exhaust manifolds to make effective use of the exhaust gas energy, prevent exhaust gas interference with other cylinders, and thus improve engine performance.

The exhaust manifolds have the water jackets to cool the manifolds and are connected to the turbo blower.

I learned about SHIP Turbo blower(TURBO CHARGER), Air cooler, Exhaust manifold this time.