Technician A says to promote improved combustion at low speed and low engine loads, more turbulence is needed to better mix the intake air and fuel. Technician B says that the shape of the intake port is shaped so as to impart a twisting or spinning motion to the air as it enters the cylinder to increase turbulence. Who is right?

Question

Quizplus · Accepted Answer

Both Technician A and Technician B are correct. More turbulence is needed for better mixing of air and fuel at low speeds and loads, and the intake port shape can help create this turbulence by imparting a spinning motion to the air.

Technician a Says to Promote Improved Combustion at Low Speed