Difference Between Multi-Point Fuel Injection and Direct Injection in Motorcycles

[LeIan]

Differences between direct injection and multi-point fuel injection are introduced as follows: Fuel consumption: Direct injection has lower fuel consumption, while multi-point fuel injection has less stringent fuel quality requirements. Components: Both direct injection and multi-point fuel injection have complex structures and high costs. Operation: In direct injection engines, high-pressure fuel is injected into the combustion chamber in a fine mist. As it evaporates, it absorbs heat, cooling the cylinder and thereby reducing emissions. Multi-point fuel injection involves injectors installed on the intake pipe of each cylinder, with fuel being injected into the cylinder from multiple locations. Technical requirements: Direct injection has higher technical requirements, with the main challenge being the implementation of stratified combustion. Although multi-point fuel injection improves the uneven distribution of air-fuel mixture seen in single-point injection, it does not enhance fuel atomization or the mixing of fuel and air.