Aviation gasoline

Nhóm 2 KSTN HD

Content

I 1 Introducing

3 Avgas composition

2 Avgas specifications

Introducing

The basic different between avgas and Jet Fuel

Aviation gasoline price

Introducing

3 loại xăng phổ biến hiện nay

- Avagas 80/87

- Avagas 100/130

- Avags 100LL

Avgas specifications

Antiknock

Distillation

Freezing point

Sulfur content

Avgas specifications

Avgas specifications

Avgas composition

Avgas composition

Avgas composition

- Base gasoline

- Alkyl gasoline, izoctan, izopentan, toluene, alkyl benzene, piro benzene

- Additives

Avgas composition

Avgas composition

Izo-parafin 15-50%

Aromatic maximum 6%

Additives

Avgas composition

Avagas 100/130

- Base gasoline is catalyst cracking gasoline

- Alkyl gasoline 30-40%

-Toluen 6%

-TEL 2,7g/kg

Antiknock additives

Icing inhibitor

Dye

Antioxidant

N-oxydiphenyl amin 0.004-0.01%

Electrical-Conductivity additive

Stadis 450 in concentrations 3mg/L

Introduction

Performance

Specifications and Test Methods

Composition

Refining

1st century B.C.

Hero’s Toy

17th century

Leonardo da Vinci

the 1930s

Hans von Ohain

and Frank Whittle

the 1950s

the commercial jet industry was developing

Nowadays

Jet A and

Jet A-1 predominate

while green

fuel are considered

BSR

Vinapco

Petrolimex

Mipecorp

Mục đích sử dụng

Civilian

(J-A, J-A1, J-B)

Military

(JP-4, JP-5,

JP-8, J-B)

Nguồn nguyên liệu

Kesosen type

(J-A, J-A1, JP-5, JP-8)

Wide-cut type

(J-B, JP-4)

Combustion

Volatility

Fluidity

Stability

Non-corrosivity

Safety Properties

Aromatics Naphtene Iso-

paraffin n-paraffin

TCVN 2012 Def Stan 91-91 GOST 1995

ASTM

Specific energy MJ/kg, Min

42,80 42,80 42,80 42,80

Smoke point, mm

25 19

25 19

25 19

25 18

Naphthalene, % vol.

3 3 - 3

Total Aromatics, %v/v

26,5 25

26,5 25

22 (wt) 25 (wt)

TCVN 2012

Def Stan 91-91

GOST 1995

ASTM

• Distillation – IBP °C • 10% by volume at °C • 50% by volume at °C •90% by volume at °C •Final Boiling Point °C, • Residue % volume •Loss% volume

Report 205 Report Report 300 1,5 1,5

- 205 Report Report 300 1,5 1,5

- 205 Report Report 300 1,5 1,5

- 205 Report Report 300 1,5 1,5

TCVN 2012 Def Stan 91-91 GOST 1995 (TS-1)

ASTM

Flash Point °C 38 Min 38 Min 38 Min 38 Min

Density @ 15 °C kg/m3

Min 775,0 – Max 840,0

Min 775.0 Max 840.0

Min 775.0 Max 840.0

Min 775.0 Max 840.0

TCVN 2012 Def Stan 91-91 GOST 1995

ASTM

Freezing point , °C

-47 -47 -47 -47

Kin. Viscosity at minus 20°C, mm2/s (cSt) Max

8,00 8,00 8,00 8,00

Oxidation reactions (Hydroperoxides and peroxides) attack and shorten the life of some fuel system elastomers.

Formation of soluble gums and insoluble particulates clog fuel filters and deposit on the surfaces of aircraft fuel systems, restricting flow in smalldiameter passageways.

Storage Stability and Thermal Stability

On fuel filters, increasing the pressure drop across the filter and reducing fuel flow.

In fuel injector nozzles, disrupting the spray pattern, which may lead to hot spots in the combustion chamber.

In the main engine control, interfering with fuel flow and engine system control.

On heat exchangers, reducing heat transfer efficiency and fuel flow.

TCVN 2012 Def Stan 91-91 GOST 1995 ASTM

Total Acidity, mg KOH/ gm

0,015 0,015 0,1 0,015

0,1

Sulphur, Total % m/m,

0,3 0,3 0,25

0,3

Sulphur Mercaptan % m/m,

0,003 0,03 0.003 0,003

Cu strip for 2 hrs @ 100 °C

1 1 1 1

Flash Point

Electrical Conductivity

TCVN 2012 Def Stan 91-91 GOST 1995 (TS-1)

ASTM

Electrical Conductivity PS/m

Min 50 Max 600

Min 50 Max 600

Min 50 Max 450

Min 50 Max 450