polttoaineensäätö

Polttoaineensäätöä, also known as fuel injection, is a system used in internal combustion engines to deliver the correct amount of fuel to the engine's combustion chambers. This system is designed to improve engine performance, efficiency, and emissions control compared to traditional carburetion. Fuel injection systems can be categorized into two main types: direct injection and indirect injection.

Direct injection systems spray fuel directly into the combustion chamber, which allows for better fuel atomization and mixing with air. This results in more efficient combustion and reduced emissions. Direct injection is commonly used in modern diesel engines and some gasoline engines.

Indirect injection systems, also known as port fuel injection, spray fuel into the intake manifold or directly into the intake ports of the engine. This method is simpler and less expensive than direct injection but may not provide the same level of efficiency and emissions control. Indirect injection is often used in older gasoline engines and some modern gasoline engines.

Fuel injection systems are controlled by an electronic control unit (ECU) that adjusts the fuel delivery based on various factors such as engine speed, load, and temperature. This allows for precise control over the engine's operation, improving performance and reducing emissions.

Fuel injection systems have several advantages over carburetion, including better fuel efficiency, improved engine performance, and reduced emissions. However, they are more complex and expensive to manufacture and maintain. Despite these challenges, fuel injection has become the standard for most modern internal combustion engines.