PRESENTATION ON

CNG DRIVEN MOTORCYCLE

Presented by:Nabin Thapa

Roll no: 120106151

Sharda UniversityGreater Noida

April, 2015

Introduction to CNG

Natural gas compressed to 1% of it’s volume at normal condition give CNG

Formed from dead plants and animals due to intense heat and pressure

Methane as primary component with negligible amount of CO2, H2S and N2.

Fig: Source of CNG

Properties of CNG 90% methane Self ignition temperature= 540 C Adiabatic flame temperature= 1900

C 5 to 15 % conc. in air to burn Relative density= 0.61 Octane number= 127 Calorific value= 38 MJ per cubic

meter at standard condition Clean source of energy and

comparatively cheaper

Introduction to CNG driven motorcycle

Not yet produced in large scale due to some major challenges like:

a) Expensive CNG kit and need of approval

b) Large fuel tank requirement and space adjustment problem in bike

Main problem is related to the tank

. So main focus has to been made in solving the problem related to the tank.

Size of tank

Cylindrical tank with diameter=40cm and length= 62 cm

Adjustable size in bike

Stores cng that can give same work output as petrol tank of 15 ltr capacity

Fig: cylindrical tank to store cng

Material to make the tank Rubber

membrane wrapped with carbon fiber and coated with epoxy

Light and strong but expensive

To reduce cost steel or aluminum can be used but they are heavy

Fig: layer of constituent material in tank

CNG kit(parts required to change petrol run bike to CNG driven one)

Reducer Cylinder valve Air gas mixturer

High pressure pipe

Pressure gauge Filling valve

CNG kit installation Connect all the parts as shown after removing the battery

and original tank of bike and then replacing by CNG tank

CNG Cycle

Process involved:

a) Isentropic compression

b) Heat addition at constant volume

c) Isentropic expansion

d) Heat rejection at constant volume

PV diagram TS diagram

Case Study

 Produced by Argentinean manufacturer zanella

150 cc R-150 Dual fuel : CNG and

petrol CNG running capacity

of 200 km and 3.5 liter petrol tank

Costs 285 dollar more than pure gasoline driven model

Thank you !