biodisel vehicle compatiability

8/13/2019 Biodisel Vehicle Compatiability

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Biodiesel Vehicle compatibility

Veerakumar & M. A. Aravindh


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How does a diesel engine work?.


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Bio-Diesel as a performance fuel-

parameters considered

Antifoaming

Cetane No.- 45 to 70 (40 to 53 for natural

diesel)

Chemical structure and oxygen content


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Cold Flow Properties.

Viscosity Similar to mineral diesel( ASTM1.9 mm2/s at 40oC)

In Mineral Diesel it is a gradual process but inBiodiesel it is rapid due to the presence of similarcompounds.

Corrosion Lesser corrosion due to lesser sulphur content.

Density Higher density860-900 kg/m3 as compared to

mineral diesel800-860 kg/m3.

Conductivity Better than Mineral diesel hence reduces risk of static

induced spark and fire.


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Blending with Diesel & Additization


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Antifoaming Cetane No.

Cold Flow Properties

Conductivity

Density

Lubricity

Viscosity

Stability

Performance Additives

Additives


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Performance Additives

Corrosion Inhibitors

Prevent degradation and acid formation

Injector Deposits

Detergents are used50% Improvement

Water Separation

DemulsificationPrevent growth of microbes and

degradation due to absorbance of water


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Vehicle Compatibility and Emissions


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Diesel Vehicle Requirement Fuel system Effects

Swelling of Elastomers.

Reduces life of Fuel Filter due to absorbance of rust andwater by bio fuel.

Improved injection system.

Metals like bronze, brass etc have an catalytic effect on the

oxidation of biodiesel. Hence need to be avoided. Softens certain types of paints.


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Engine Performance using Biodiesel

Blends Gels at higher temp. than diesel and may cause

starting problem in subzero temperature.

Easy cleaning of cylinder head and piston.

Engine Oil contamination.

Increases lubricity

Insignificant change in maintenance cost.

Power produced depends on the type of bio

diesel, injection system, air fuel ratio etc.

Lesser injection timing can reduce the effect ofhigher cetane no.


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Emission

i f d b d bi di l


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Properties of rapeseed based biodiesel

that can cause vehicle problem


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Relevance for APEC vehicle


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APEC biodiesel Standard

Requiring diesel blends that contain biodiesel tocomply with Applicable diesel specification

Applicable bio-diesel specification

A new bio-diesel blend standard

Establishing a B100 standard that can Ensure successful use in the market as B100

The blend rate limits would be set.

Agreed quality standards to be blend with otherbiodiesel components.


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biodisel vehicle compatiability

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