What is the reason for the abnormal data flow in the EA888 timing group 93?
1 Answers
It may be that when the Volkswagen EA888 engine starts, it is accompanied by abnormal vibrations, noises, etc. The noise will disappear after the water temperature rises, but in severe cases, the engine may fail to start. Continued attempts to start may cause the timing chain to skip teeth, leading to the valves being hit by the pistons. It is recommended to take the vehicle to a repair shop for inspection. More extended information is as follows: 1. Volkswagen EA888 engine: This is a newly designed engine by Volkswagen, integrating advanced technologies such as direct fuel injection, turbocharging, and variable valve timing, achieving a balance between power and economic environmental protection. The EA888 engine adopts intake variable valve timing technology, which can effectively improve intake and exhaust efficiency. This is mainly achieved through a vane-type hydraulic adjuster located on the intake camshaft. The vane-type adjuster consists of an outer shell, an inner vane rotor, and a locking pin inside the vane rotor. The outer shell is fixed to the external timing gear and is driven by the crankshaft. The inner vane is directly fixed to the intake camshaft and rotates with it. 2. Working principle: It mainly controls the hydraulic oil in the corresponding pipeline through the camshaft adjustment valve to drive the vane in the adjuster, thereby rotating the camshaft to advance or delay the opening and closing of the valves, with an adjustable range of up to 60° of crankshaft angle.
