AUTONEWS

Multipoint injection system: What is it?

The multipoint injection system is an advanced technology in internal combustion engines designed to improve fuel efficiency and reduce polluting emissions.

In this article we will see how the multipoint injection system works, the advantages it has and we will compare it with other systems.

How does the multipoint injection system work? The multipoint injection system injects fuel directly into the intake chamber of each cylinder, just before the intake valve. This allows for a more precise and controlled mixture of air and fuel, which improves engine efficiency and reduces harmful gas emissions.

Injection process...Engine needs are detected: Sensors located in the engine send information about engine speed, temperature, throttle position and other variables to the engine control unit (ECU).

Calculation of the amount of fuel: The ECU processes this data to determine the optimal amount of fuel to be injected.

Fuel Injection: The injectors receive the signal from the ECU and release the precise amount of fuel that vaporizes when it comes into contact with the hot air in the intake chambers.

Advantages of the multipoint injection system...The multipoint injection system has great benefits for a car, among the most important:

Better fuel economy...By allowing more precise control of the amount of fuel injected, waste is reduced and fuel efficiency is improved.

Emission reduction...This system helps minimize the release of harmful gases such as nitrogen oxides and carbon monoxide, thanks to more complete and efficient combustion.

Better engine performance...The engine response is faster and more precise with multipoint injection, providing smoother and more powerful acceleration.

Maintaining engine power...Even under heavy load conditions, the system can adjust the air-fuel mixture to maintain engine power.

Comparison with other injection systems:

-Single point injection vs. Multipoint Injection: Although more economical, the single-point system offers less precision and efficiency because all the fuel must pass through a single point, which typically results in a less balanced mixture and more emissions.

-Direct Injection vs. Multipoint Injection: Direct injection is a newer technology that injects fuel directly into the combustion chamber, offering advantages in terms of efficiency and emissions control. However, multipoint injection systems are still widely used due to their reliability and cost effectiveness.

Multipoint Injection System Maintenance...Regular maintenance is important for the proper functioning of a multipoint injection system. This includes cleaning injectors, checking sensors, and maintaining the fuel filter to prevent blockages that can affect system efficiency.

The multipoint injection system has been a significant improvement in car technology, providing notable benefits in terms of fuel efficiency, engine performance, and reduced emissions. Although direct injection is gaining ground, multipoint injection remains a valuable option because of its balance between cost and performance. With proper maintenance, multipoint injection systems can provide years of efficient and reliable operation.

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