This method was originally used to check the abnormal sound of the engine. Later, after technical improvement, a brand-new and efficient engine management system was derived. Now Buick LaCrosse-LaCrosse of China and Shanghai General Motors Company has this technology.
3.0 Ultimate Edition is equipped with AFM (Active Fuel Management) intelligent fuel management system and DoD (Displacement on Demand) variable displacement control technology used by general family V8 engines. Under certain conditions, it can realize the active intelligent switching of 6 /3 cylinders, achieve the dual effects of fuel saving and emission reduction, and improve the smooth and quiet dynamic performance. ..... This cylinder number is not changed casually, but is determined by balancing the stress on the crankshaft; As for the remaining cylinders, if the connection with the crankshaft is not disconnected, they follow, are not afraid of oil lubrication, but do not output power.
This technology is more advanced. I still remember that Cadillac has a concept car with 65,438+06 cylinders, which incorporates almost all the company's advanced technologies, including this variable displacement technology: it can be switched to 4 cylinders, 6 cylinders, 8 cylinders or 65,438+02 cylinders according to driving needs, which has strong power when driving fiercely and is economical and fuel-efficient when traveling in leisure. ...
Used in some foreign medium and heavy engines.