Introduction

Here are a few examples of diesel engines that demonstrates the benefits of Bycosin fuel treatments to assist in the burning of today’s heavy fuel.

 

MAN B&W 7S70MC BHP: 24,000 Fuel Cons: 70 mt/day

Main problem of piston ring failure is due to the loss of tension/seizure at low running hours 3-4,000.

This is possible due to excess carbon deposits getting in ring grooves and inhibiting ring movement.

MP-4 used to help speed up rate of combustion and reduce piston carbonaceous deposits. MP-4 dosage 1:3000 injected during fuel transfer to settling tank.

No fuel spec. available as they did not have the fuel analysed but mainly bunkered in Rotterdam.

 

Sulzer 7RTA84M BHP: 35,455 Fuel Cons: 90 mt/day

Main problems were caused by burning relatively high MCR fuels causing scavenge air port fouling and excessive deposits under the piston.

This engine used Bycosin’s MFD 1100 dispersant dosed to bunker tanks at 1:20,000 to stabilize and homogenize the fuel and disperse asphaltenes giving better atomization and more complete combustion.

Fuel spec: Fuel usually bunkered in Persian Gulf and US Gulf.

Bunker Port Khor Fakkan Vanadium 59

Density @ 15C 988.0 Sodium 10

Viscosity @ 50C 385 Cst Aluminium 32

Water 0.1 Silicon 34

MCR 16.0 Iron 6

Sulphur 3.09 Nickel 24

TSP LT 0.01 Calcium 3

Ash 0.04 Magnesium1

Calculated Values Lead LT 1

Specific Energy 40.20 MJ/kg Zinc LT 1

CCAI 849 Flash Pt. > 70

 

Hitachi B&W 7S80MC BHP: 26,000 Fuel Cons: 80 mt/day

The main problem of piston ring failure is due to loss of tension/seizure at low running hours 3-4,000. The piston rings also suffered high liner wear and ovality.

MP-4 used to help speed up the rate of combustion and reduce acidic corrosion by inhibiting formation of SO₃. MP-4 dosage was 1:3,000 injected during fuel transfer to settling tank.

Fuel Spec:

Bunker Port Freeport Vanadium 296

Density @ 15C 991.6 kg/m3 Sodium 30

Viscosity @ 50C 343 Cst Aluminum 11

Water 0.7 Silicon 20

MCR 13.9 Iron 18

Sulfur 2.67 Nickel

TSP 0.02 Calcium 14

Ash 0.08 Magnesium 4

Calculated Values Lead 1

Specific Energy 40.00 MJ/kg Zinc 1

CCAI 854 Flash Pt. > 70