You asked: What are the various alternative fuels for SI and CI engines?

What are the different kinds of fuels used in an IC engine?

Gasolines are the main fuel for spark-ignition internal combustion engines (Otto engines), diesel fuels are for compression ignition internal combustion engines (diesel engines), marine fuels are for shipping, and aviation turbine fuels (JET fuels) are used for aviation turbines.

Which fuel is used in SI engine?

SI engines are commonly fueled on gasoline, with the fuel characterized based on octane number. The octane number defines the fuel’s ability to reduce autoignition or knock, with the higher the octane number, the higher the resistance to autoignition.

Why alternative fuels are used in IC engine?

Alternative fuels can play a major role in reducing regulated emissions through cleaner combustion, and renewable fuels in particular can help reduce greenhouse gas emissions. There are several potential solutions to these issues from reduced consumption, increased production, and/or alternative sources of energy.

What are alternative fuels and what alternative fuels are available?

Alternative fuels include gaseous fuels such as hydrogen, natural gas, and propane; alcohols such as ethanol, methanol, and butanol; vegetable and waste-derived oils; and electricity.

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Which is the most preferred CI engines fuel?

Explanation: For C.I. engines fuel most preferred are paraffins and for S.I. engines fuel most preferred are aromatics.

Which is not use in CI engine?

Explanation: Methanol is not used in CI engines because of its high octane number and low cetane number. Pure methanol and gasoline in various percentages have been extensively tested in engines and vehicles for a number of years.

What is the full form of SI engine?

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

Why SI engines are high speed engines?

SI Engines operates at higher speed due to their less compression ratio (i.e. less weight per unit power). They produce less torque and operates at higher speed.

What are the properties of alternative fuels?

Burns cleaner than fossil diesel and produces significantly fewer emissions. Almost sulphur-free and contains no aromatic compounds. Easier to ignite than fossil diesel (higher cetane rating). Cold behaviour similar to fossil diesel.

What are the importance of alternative fuels?

The use of alternative fuels save the use of fossil fuels and reduces waste being sent to landfill, therefore it is environmentally friendly. It also has the support of the UN and Clean Development Mechanism (CDM) in various projects.

What is the cleanest fuel for cars?

Alternative fuels such as hydrogen, acetylene, natural gas, ethanol and biofuels also uses in internal combustion engines. Hydrogen in the gas phase is about 14 times lighter than the air. Moreover, it is the cleanest fuel in the world.

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What is the best alternative fuel?

Here is our Top Eight list of alternative fuels.

  1. Ethanol. An alcohol-based alternative fuel made by fermenting and distilling crops such as corn, barley or wheat. …
  2. Natural Gas. …
  3. Electricity. …
  4. Hydrogen. …
  5. Propane. …
  6. Biodiesel. …
  7. Methanol. …
  8. P-Series Fuels.