THE USE OF FUEL IN THE GASEOUS STATE USED FOR CARS

Аннотация

This article explores the use of gaseous fuels in the automotive industry, focusing on their environmental, economic, and technical advantages. By analyzing the current literature on gaseous fuels such as compressed natural gas (CNG), liquefied petroleum gas (LPG), and hydrogen, the paper outlines the methods, results, and future prospects for integrating these fuels into the automotive sector. It also presents suggestions for further development and implementation. Keywords: Gaseous fuels, compressed natural gas, liquefied petroleum gas, hydrogen, automotive sector, environmental impact, fuel efficiency, alternative fuels, sustainability. With the growing concern over environmental pollution and the depletion of fossil fuels, the automotive industry has been exploring alternative fuel sources. Among these, gaseous fuels have emerged as a promising solution due to their lower environmental impact, efficiency, and potential for reducing dependency on traditional liquid fuels. Gaseous fuels, such as compressed natural gas (CNG), liquefied petroleum gas (LPG), and hydrogen, offer several advantages, including cleaner combustion, lower carbon emissions, and higher fuel efficiency. This article aims to examine the use of gaseous fuels in cars, with a focus on their feasibility, challenges, and the benefits they provide for both the environment and the automotive industry. Compressed Natural Gas (CNG) What is it? Compressed Natural Gas (CNG) is primarily composed of methane (CH4). It is stored under high pressure (around 200-250 bar) to reduce its volume for transportation and storage in vehicles. How it works: Выпуск журнала №-22 Часть–4_ Март –2025 21 MODERN EDUCATION AND DEVELOPMENT  CNG is delivered to the engine via a pressure regulator, which reduces the pressure to a level usable by the engine. It then mixes with air before being combusted in the engine cylinders. Advantages: 1. Eco-Friendly: Produces significantly lower CO2, CO, and nitrogen oxides (NOx) compared to gasoline and diesel. 2. Cost-Effective: Cheaper than gasoline and diesel in many countries. 3. Abundant Supply: Available in large quantities worldwide. 4. Safety: CNG is lighter than air, so it dissipates quickly if there is a leak, reducing the risk of fire. Disadvantages: 1. Lower Energy Density: Provides less energy per unit volume compared to gasoline or diesel, resulting in reduced range. 2. Bulky Storage Tanks: Requires larger tanks, which reduce available space in vehicles. 3. Limited Infrastructure: Not all areas have sufficient refueling stations. Applications: Commonly used in buses, trucks, and light-duty vehicles, especially in countries like India, Pakistan, and Argentina. Liquefied Petroleum Gas (LPG) What is it? LPG is a mixture of propane (C3H8) and butane (C4H10), which is stored in a liquid state under moderate pressure (5-10 bar) or refrigeration. How it works:  LPG is vaporized and mixed with air before entering the combustion chamber of an internal combustion engine. Advantages: 1. Reduced Emissions: Generates fewer carbon emissions than gasoline or diesel, particularly lower CO2, NOx, and particulate matter. 2. Cost-Effective: Typically cheaper than gasoline and diesel. Выпуск журнала №-22 Часть–4_ Март –2025 22 MODERN EDUCATION AND DEVELOPMENT 3. Dual Fuel Capability: Vehicles can be fitted with systems that allow them to run on both LPG and gasoline. 4. Efficient Combustion: Burns cleaner and more completely compared to conventional fuels. Disadvantages: Lower Energy Density: Similar to CNG, it provides less energy per unit volume compared to gasoline or diesel. Limited Infrastructure: Fewer refueling stations available compared to gasoline. Safety Concerns: Being heavier than air, leaks can accumulate at ground level, posing fire risks in enclosed spaces. Applications: Widely used in cars and taxis in countries like Australia, Turkey, South Korea, and parts of Europe. Hydrogen (H2) What is it? Hydrogen gas is an ultra-light, highly combustible element. It is mainly used in Fuel Cell Electric Vehicles (FCEVs) where it reacts with oxygen to produce electricity, powering an electric motor. How it works: Stored as compressed hydrogen gas at high pressures (about 700 bar) or in liquid form at extremely low temperatures. In fuel cells, hydrogen reacts with oxygen to produce water and electricity, which powers the vehicle’s electric motor. Comparison Table Criteria CNG LPG Hydrogen Environmental Low emissions Low emissions Zero emissions Impact Cost Low Moderate High Выпуск журнала №-22 Часть–4_ Март –2025 23 MODERN EDUCATION AND DEVELOPMENT Criteria CNG LPG Hydrogen Energy Density Low Moderate High Infrastructure Limited Moderate Very Limited Safe (Lighter than Moderate (Heavier than Safety Complex storage air) air) Cars, taxis, light-duty FCEVs, buses, Applications Buses, cars, trucks vehicles trucks The shift towards gaseous fuels for cars presents both opportunities and challenges. While the environmental benefits are