1. Biofuels:
- Biodiesel: Derived from plant oils or animal fats, biodiesel is a clean-burning fuel often used in diesel engines.
- Ethanol: Produced from the fermentation of plant materials like sugarcane, corn, or wheat, ethanol is commonly blended with gasoline to create bioethanol fuel.
- Biogas: A mixture of methane, carbon dioxide, and other gases produced by the anaerobic decomposition of organic matter, biogas is used in internal combustion engines.
2. Hydrogen Fuel Cells:
- Hydrogen: Hydrogen fuel cells combine hydrogen and oxygen to generate electricity, powering electric motors in fuel cell vehicles.
3. Electric Batteries:
- Electricity: Electric vehicles rely on electricity stored in high-voltage batteries to power their electric motors. Electricity can be sourced from renewable energy sources such as solar or wind power.
4. Hybrid Engines:
- Gasoline and Electric: Hybrid engines combine a conventional internal combustion engine with an electric motor and battery, using both gasoline and electric power to achieve improved fuel efficiency.
These fuels are considered greener because they produce lower emissions, especially greenhouse gases, compared to traditional fossil fuels. They contribute to reducing environmental impact and promoting sustainable transportation practices.
