Is there an essential difference between multi-point fuel injection and direct injection?

[Cora]

In a multi-point fuel injection engine, the injectors are installed on the intake manifold, where fuel and air begin to mix before entering the cylinder for combustion. In contrast, direct injection technology injects fuel directly into the cylinder. There is an essential difference between the two. The following are the differences between multi-point fuel injection and direct injection: 1. Difference one: different working methods. Multi-point fuel injection, as the name suggests, has more than one injection hole on each injector. It directly injects fuel into the intake manifold of each cylinder, which then enters the corresponding combustion chamber, with one injector per cylinder. Direct injection sprays fuel directly into the cylinder, where it mixes with air to form a combustible mixture. This maximizes the efficiency of every drop of fuel but places higher demands on the injector due to the high-temperature and high-pressure environment inside the cylinder. The injection pressure is also further increased to atomize the fuel more finely, achieving precise proportional control of fuel injection and air mixing while eliminating the drawbacks of external cylinder injection. Multi-point injection is widely used due to its high control precision and other reasons. 2. Difference two: different target users. For family cars, multi-point fuel injection is the better choice as it is more reliable, has lower maintenance costs, and does not necessarily result in very high fuel consumption. Although direct injection theoretically has many advantages, it is not as practical in use. Direct injection is a trend, but its advantages cannot fully replace those of multi-point injection.