What are the two methods of engine mounting?
2 Answers
There are two methods of engine mounting: three-point mounting and four-point mounting. Three-point mounting: Three-point mounting means that the front end is supported at two points on the upper crankshaft bearing on the vehicle head, and the rear end is supported at one point on the transmission housing on the vehicle frame. Four-point mounting: Four-point mounting means that the front end is supported at two points on the upper crankshaft housing on the vehicle frame, and the rear end is supported at two points on the flywheel housing on the vehicle frame. Purpose of mounting: The engine mounting on the vehicle frame is elastic, which is designed to eliminate the impact of frame torsional deformation on the engine during vehicle operation and to reduce vibration and noise transmitted to the chassis and passengers.
As someone with years of car repair experience, I've found that there are mainly two types of engine mounting methods: one is the rubber elastic mount, made of rubber material, which absorbs engine vibrations and prevents them from transferring to the car body; the other is the hydraulic mount, filled with fluid, providing better shock absorption and is more suitable for high-end cars.
In my daily repairs, I often encounter issues with mount aging, such as cracked rubber or fluid leakage, which can cause severe car shaking and affect balance. In such cases, replacement is necessary. Generally, replacing a rubber mount by oneself isn't difficult, but hydraulic mounts require professional tools.
Additionally, choosing the wrong mount can affect engine longevity. For example, hard mounts can cause faster component wear during long-distance driving, while soft mounts may lead to instability. I believe it's crucial to regularly check the condition of the mounts, especially after prolonged driving on rough roads. If the engine noise increases, it's a sign to pay attention—never underestimate it, safety comes first.
