Why have fuel injectors largely replaced carburetors in modern vehicles?

Fuel injectors have largely replaced carburetors in modern vehicles primarily due to advancements in efficiency and emissions control.

Fuel efficiency is significantly enhanced with fuel injectors because they provide a more precise amount of fuel to the engine compared to carburetors, which can often include excess fuel. This precision allows for better air-fuel mixture ratios, contributing to improved combustion efficiency.

In terms of emissions, fuel injectors help reduce harmful pollutants. The precise delivery of fuel means that the air-fuel mixture can burn more completely, leading to lower emissions of unburned fuel and harmful gases. These attributes combined support more stringent environmental regulations and contribute to a cleaner overall operation in modern engines.

Therefore, the correct answer encompasses both the benefits of increased fuel efficiency and reduced emissions, recognizing that both factors are critical in the transition from carburetors to fuel injectors in contemporary automotive design.