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GDI vs. Port Injection: The Rise of Dual Injection Systems
As engineers sought to solve the carbon buildup problem in GDI engines, a clever hybrid solution emerged: dual injection systems. Also known as port and direct injection, these systems combine the best of both worlds. An engine equipped with this technology has two sets of fuel injectors: traditional port injectors and modern direct injectors.
The engine control unit (ECU) intelligently switches between or combines both injection methods. At low loads and cold starts, it might use only port injection to help clean the intake valves. Under high load for maximum power, it will use direct injection. Sometimes, both systems operate simultaneously for optimal efficiency and cooling of the combustion chamber.
FAQ
Q: What are the benefits of a dual injection system?A: It largely eliminates the carbon buildup issue associated with pure GDI, while still retaining all the performance and efficiency benefits of direct injection. It also allows for more flexible…


