The difference between direct injection and hybrid injection in automobiles

Difference between auto direct injection and hybrid injection

Difference between auto direct injection and hybrid injection is as follows:

1, the principle is different: hybrid injection engine is a combination of multi-point injection and direct injection of hybrid injection technology, is composed of cylinder direct injection and manifold injection of fuel supply system. In-cylinder direct injection technology is a new engine technology developed in recent years. It moves the injector from the intake manifold to the inside of the cylinder, and the fuel is injected directly into the combustion chamber of the cylinder to form a mixture with air for smooth and efficient combustion.

2, the advantages of different: mixed injection engine can improve efficiency, but also to avoid the direct injection engine in the low load conditions of the excess oxygen caused by emission problems. In-cylinder direct injection technology in the combustion, the air layer will isolate the heat, you can reduce the transfer of heat to the cylinder wall, thus improving the thermal efficiency of the engine.

3, the function is different: the function of the hybrid injection mode is intended to combine the advantages of manifold injection and direct injection technology, to solve the problems of the traditional direct injection technology. In-cylinder direct injection technology has been quite mature. The key to the direct injection engine is to inject fuel into the combustion chamber of the cylinder immediately with high pressure. The engine can automatically adjust the valve opening time and the amount of air entering the cylinder at the same time.

4, the cost is different: hybrid injection engine due to the integration of the cylinder direct injection and manifold injection of two systems, two sets of oil pumps and fuel supply lines, the cost is much higher than the cylinder direct injection engine.