Natural Gas Engines | TECHNOLOGY FACTS

Natural Gas Engines

Natural gas Engines, also known as compressed natural gas (CNG) engines or liquefied natural gas (LNG) engines. are internal combustion engines that operate using natural gas as their primary fuel source. Natural gas Engines are used in a variety of applications, including transportation, power generation, and industrial process. Here's an explanation of how Natural gas Engines work.

Natural Gas Fuel System

Engine

Ignition System

How Natural Gas Engines Work?

1. Fuel Delivery

In compressed natural gas (CNG) engines, gaseous natural gas is delivered from storage tanks to the engine's intake manifold. In liquefied natural gas (LNG) engines, the fuel is stored as a cryogenic liquid and converted back in to a gas before entering the engine.

2. Air mixing

The Natural gas is mixed with air in the intake manifold to create a combustion air fuel mixture.

3.Compression

In compression ignition Engines, the air fuel mixture is compressed within the cylinder. In spark ignition engines, the mixture is drawn in to the cylinder during the intake stroke.

4. Ignition

In spark ignition engines, a spark plug ignites the air-fuel mixture at the correct moment in the compression stroke. In compression ignition engines, the high compression ratio causes auto ignition, similar to diesel engines.

5. Combustion

The ignited air-fuel mixture undergoes combustion, producing high pressure gases that push the piston down. generating mechanical energy.

6. Exhaust

After the power stroke, the exhaust gases are expelled from the cylinder during the Exhaust stroke.

Natural gas Engines are commonly used in applications such as city buses, garbage trucks, delivery vehicles, and some passenger cars. They are also used in stationary power generation, particularly in situations where natural gas is readily available. As interest in alternative fuels and reduced emission grows, natural gas engines continue to play a role in diversifying the fuel options available for transportation and power generation.

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