Marine Diesel Engine Turbocharger

A turbocharger is a kind of mechanism for marine diesel engines forced induction. Marine turbochargers force the induction system and place it into the engine cylinders of compressed air to make a lot of fuel into the engine. Turbocharger engines not only gain more power but also improve the engine’s power to weight ratio.

Engine Turbocharger Pictures:

Two turbochargers for marine engines

• constant pressure turbo
• pulse turbo-charging

Constant pressure turbo

This type of Turbo, the exhaust gas from each cylinder, leads to the common manifold. From the manifold, it enters the turbine at constant pressure. When emissions through the turbine nozzle and vanes, using exhaust heat to work. Exhaust manifold space must be big enough to accommodate the emissions from all cylinders without any pressure rising. Constant pressure turbocharging is typically used in two-stroke marine diesel engines.

1. Advantages of constant pressure turbocharging

• Outstanding performance under a constant load
• Good turbo efficiency due to constant exhaust flow
• No need to group

2. Disadvantages of constant pressure turbocharging

• If constant load fluctuations persist is not good
• Need for additional blowers on startup

Requires a large manifold to accommodate the exhaust gas

Pulse Turbocharging

This type of turbocharging, where the exhaust gas from each cylinder, goes directly to the turbo intake, and uses pressure pulses or waves to do work. A high-speed pressure pulse does the job when the exhaust valve opens and the exhaust is blown through small pipes to the turbocharger nozzles and vanes.

Pulse turbo-charging is typically used for four-stroke engines.

Advantages of Pulse turbo-charging

• Outstanding performance with frequent load changes
• Turbine speed up good at startup
• No need for an additional blower
• Without exhaust manifold

Disadvantages of Pulse turbo-charging

• Complex exhaust pipe
• Need exhaust group
• Possible recoil, which leads to inefficiency

Structure and Working of single Parts

The turbocharger consists of two main components, a turbine, and a compressor, installed on the same shaft. Typically, axial turbines are used for large land-based plants and marine vessels.

1. Turbine

High-speed exhaust gases from the nozzle ring are booting to the rotor blades. The nozzle ring is used to produce the kinetic energy in the exhaust gas, and the rotor blades are fixed tightly by the roots of the fir tree structure. They prevent vibrations by the ropes running through them.

Heat-resistant nickel-chromium steel is used for turbine blades, wheel nozzles, and shafts. Adequate cooling water space arrangement is also carried out on its cast iron housing

2. Compressor / Blower

Compressors or blowers in the turbocharger inlet side are equipped with a silencer and set filters.

In order to direct the fresh air to the center, before the impeller installed a deflector made of light-alloy aluminum alloy. The impeller inhales fresh air in the axial direction while delivering fresh air radially with the volute.

A volute is placed after the impeller which can convert all the kinetic energy of the fresh air into pressure energy. Compressed air is then fed into the cylinders through an intercooler to cool the compressed air

3. Bearings & Seals

Separate bearings are mounted on both parts of the turbocharger. Ball and roller or plain sleeve bearings are commonly used.

Marine Diesel Engine Turbocharger Spares:

Marine Diesel Engine Turbocharger Brands

We offer the Brands and Spear parts:

SULZER:
RD68	RND76	RND76M	RND90	RND90M
ZL40/48	RTA62	RND68M	RTA84	16ZAV40S
RLA90	RTA72	RTA84M	RTA84C	RND68
RTA52	RTA58	RTA76	RLB90	RTA48(T)
RTA38	RTA76	RTA96	RLA(B)56	RLA(B)66
RLA(B)76	RF44	RF56	TAD36	TAD48

 

MAN:
40/54A	52/90N	57/80C	KZ57/80F
KSZ70/125	KSZ78/155	90/160A	52/55
L58/64	90/190CL	60/105E	70/120E
70/125CL	KSZ78/155A	KSZ70/125BL	52/55A, 40/45

 

B&W:
L35MC	L60MC	L80MC	L55GF	L55GFCA
L80GFCA	L80GB	74VT2BF	K62EF	K74EF
K84EF	K45GFC	K67GF	K80GF	K90GF
S45HU	L70MC	L50MCE	S60MC	S70MCE
K80MC	S80MC	K90MC-C	L67GFCA	L90GBE
K45GF	L45GF	L67GF	L80GF	L90GF
S35MC	L42NC	S42NC	L50MC	S60MC
L70MC	L80MC	L90MC	S90MC	50VT2BF
62VT2BF	K84EF

 

MITSUBISHI:
UEC37L/LA/LS	UEC45HA	UEC60L/LA/LS
UEC45L/LA/LS	UET45/75C	UEC52/125H
UEC52L/LA/LS	UET45/80D	UEC52/90D
UEC(T)52/105D	UEC45/115H	UEC37/88H	UEC37H

 

PIELSTICK:
PA6	PC3	PC2-2	IHI PC2-5	PC4
PC2-6	PC4-2L	PC4-570	PA5

 

AKASAKA:
UET45/80D	UEC52/105D	DM51SS	UEC 60/150H	UEC 60HA
A31	A34	A37	A41	AH27
AH28	AH30	AH36	AH38	AH40
DM30	DM36	DM38	DM46	DM47

 

DEUTZ:
RBV8M358	RBV8M540	RBV16M640	TBD620L6
BVM350	BVM540	BF6M716

 

HANSHIN:
EL30	EL32	EL35	EL40	EL44
LH28RG	LH31G	LU28(A,R,G)	LU32	LU35
LU38	LU46(A)	LU50	LU54	LUN28
LUN30	LUD32	LUD35	LUS38

 

NIIGATA:
MG40X(EX)	M34X	6M28BFT	M31X

 

MAK:
M332	M453AK	MU551AK	MU552AK	M601
MU452AK	451AK	6M453AK	9M453C	6M601C
8M601

 

WARTSILA:
22	32	31	26	20
S28	38	46	32GD	46GD
14TK	R22HF	R-V32	NOHAB

 

DAIHATSU：
PS-18	PS-22	PS-20	PS-26	PS-30
PKT-14	PKT-16	PKTD-16	DS-18	DS-22
DS-26	DS- 28	DS-32	DL-14	DL-16
DL-19	DL-20	DL-22	DL-24	DL-26
DK-20	PL-24

 

 

CUMMINS:
4BT3.9	6BT(A)5.9	6CT8.3	NT(A)855	N14
KTA19	KTA38	KTA50	QSK19	QSM11

 

CATERPILLAR:
3054	3056	3066	3106	3126
3306	3406	3408	3412	3508
3512	3516	3606	3608	3612
3616	3618	C1.5	C2.2	C7
C9	C10	C12	C15	C16
C18	C30	C32

 

SCANIA:
DI 09	DI 13	DI 16

 

• MAN B&W KSZ70/125, KSZ78/155, KSZ90/160, KSZ52/105
• Shaft lubrication oil tank
• Different types of Anchors
• Marine Engine Connecting Rod
• Fuel Oil System for Marine Diesel Engine
• Causes of failure and misalignment of marine engine crankshafts