What are the properties of petrol and diesel?

Comparison chart

	Diesel	Gasoline (Petrol)
Torque (for 10L engine)	1000 Nm @ 2000 rpm	300Nm @ 4000 rpm
Power (for 10L engine)	490Hp @ 3500 rpm	600Hp @ 5500 rpm
Power = torque*RPM	More torque at low speeds	Runs at higher RPM
Auto-ignition temperature	210°C	246°C

What are the properties of diesel fuel oil?

Abstract: Diesel fuel is a mixture of hydrocarbons obtained by distillation of crude oil. The important properties which are used to characterize diesel fuel include cetane number (or cetane index), fuel volatility, density, viscosity, cold behavior, and sulfur content.

What are the properties of lubricating oil?

A good lubricant generally possesses the following characteristics:

• A high boiling point and low freezing point (in order to stay liquid within a wide range of temperature)
• A high viscosity index.
• Thermal stability.
• Hydraulic stability.
• Demulsibility.
• Corrosion prevention.
• A high resistance to oxidation.

Does diesel have lubricating properties?

As the demand for environmentally safe fuels increases, so will the call for cleaner burning engines. A diesel fuel’s lubricity is a measure of its ability to prevent or minimize wear in the components that utilize the fuel as a lubricant. …

What are the 3 types of fuel?

There are three types of fossil fuels which can all be used for energy provision; coal, oil and natural gas.

Which is more powerful petrol or diesel?

Petrol vs diesel – on the road… Diesel cars have more torque than petrol ones, meaning that their pulling power is greater. Petrol cars, on the other hand, require more gear changes when overtaking. Diesel engines are generally noisier than petrol ones, though.

How many types of diesel are there?

Standard diesel fuel (sometimes called diesel oil) comes in two grades: Diesel #1 (or 1-D) and Diesel #2 (or 2-D). Just as gasoline is rated by its octane, diesel fuel is rated by its cetane, which indicates how easy it is to ignite and how fast it burns. The higher the cetane number, the more volatile the fuel.

What is the specific gravity of diesel?

2 diesel fuel is between 30 and 42. The specific gravity, at 60/60°F, and the density, at 15.6°C, are between 0.88 and 0.82.

What is the most important property of lubricating oil?

Viscosity
Viscosity is one of the most important properties of a fluid lubricant that determines the fluid friction involved in lubrication, the load-carrying capacity of the lubricant film, its resistance to the initiation of relative movement of moving parts and the sealing capacity, pumpability and heat transfer properties of …

What is the main purpose of the lubricant?

Functions of lubrication : To lubricate each part of the bearing, and to reduce friction and wear. To carry away heat generated inside bearing due to friction and other causes. To cover rolling contact surface with the proper oil film in order to prolong bearing fatigue life.

Which is the main source of lubricating oils?

crude oil
Lubricating oil is refined from crude oil. After undergoing a purifying process colled sedimentation, the crude oil is heated in huge fractionating towers. The various vapors—which can be used to make fuel, waxes, or propane, among other substances—boil off and are collected at different points in the tower.

Why is lubrication of a diesel engine necessary?

Corrosion prevention due to acids and moisture, Cleaning pistons and preventing sludge build-up on internal surfaces, Keeping seals lubricated and controlling swelling to prevent leakage due to seal failure and.

What kind of lubricant is used in a diesel engine?

Engine lubricants consist of a base oil (typically 75 – 83%), viscosity modifier (5 – 8%) and an additive package (12 – 18%) [1265]. As the base oil alone cannot provide all of the lubricating oil functions required in modern engines, the additive package has evolved to play an increasingly important role in the oil formulation.

Which is the most important property of lubricating oil?

The viscosity of an oil is usually as the time in seconds that it takes for a given amount of the oil to flow by gravity through a standard sized orifice at a given temperature. Viscosity is one of the most important properties of engine lubricating oil. It is used universally to grade lubricants. Viscosity is inversely proportional to temperature.

How does lubricating oil improve the performance of an engine?

Other additives that improve the performance of lubricating oils are antioxidants and detergents, which maintain engine cleanliness and keep fine carbon particles suspended in the circulating oil. In gear lubrication the oil separates metal surfaces, reducing friction and wear.

How are petroleum fractions used as lubricants?

At one time the suitability of petroleum fractions for use as lubricants depended entirely on the crude oils from which they were derived. Those from Pennsylvania crude, which were largely paraffinic in nature, were recognized as having superior properties.