The function of the car engine bracket
The automotive engine mount (also known as engine suspension, engine foot glue, or torsion mount) is a crucial component in the vehicle's power system, primarily responsible for three core functions: support, vibration isolation, and vibration control.
Main functions
Physical fixation of the engine
The engine mount is securely connected to the vehicle frame or subframe through a metal body and bolts, ensuring the engine maintains a stable position during vehicle acceleration, braking, cornering, or bumpy road conditions, preventing it from moving or oscillating excessively.
Buffering and vibration isolation
The internal part of the mount usually incorporates rubber sleeves or hydraulic shock absorption modules, effectively absorbing the mechanical vibrations generated by the engine operation, blocking the transmission of vibrations to the vehicle body and the driver's cabin, significantly enhancing ride comfort and reducing interior noise and vibration.
Improving driving stability and handling performance
A well-designed mount not only isolates vibrations but also precisely controls the engine's movement trajectory (such as suppressing "nodding" or "side rolling"), helping to improve the vehicle's steering response and driving stability. Some models (such as Subaru) adopt a multi-point support structure, further optimizing the balance of the power unit.
Protecting critical systems
By reducing the transmission of engine vibrations, the mount indirectly protects the gearbox, exhaust system, brake lines, and suspension components, preventing premature wear or loosening of connections due to long-term vibration.
Additional note: The difference between torsion mounts and ordinary engine foot glue
Ordinary engine foot glue: Mostly in the form of rubber blocks, installed at the bottom of the engine, mainly responsible for vertical support and vibration isolation.
Torsion mounts: Usually in the form of metal rod-like structures, installed on the side of the engine, specifically designed to resist the "torsional load" generated by the engine during sudden acceleration/braking, preventing the engine from moving back and forth, and is a key component for improving handling stability.
Some high-end models (such as BMW 5 Series) use high-strength aluminum alloy or hydraulic mounts to balance lightweight and excellent shock absorption performance.
If the mount is aged or broken, it may cause steering shakes, abnormal noises, even engine displacement, and in severe cases, endanger driving safety.
Main symptoms of engine mount damage include abnormal vibrations and shakes, reverse car or bumping sensation during reversing, increased shaking when starting or opening the air conditioning, abnormal engine noise, unstable idle, and body resonance, etc.
Main symptom manifestations
Driving abnormalities:
During low gear high-torque driving (such as reversing or climbing), the vehicle exhibits shaking or jerking, requiring an increase in the throttle to alleviate the problem.
During high-speed driving, there is a noticeable vibration sensation in the steering wheel, accelerator pedal, and brake pedal, affecting the stability of handling.
Increased engine shaking:
During cold start-up, gear shifting, or opening the air conditioning for cooling, the engine shakes violently, transmitting the vibration to the vehicle body.
During idle, the vehicle body shakes significantly, possibly accompanied by vibrations from the engine compartment reaching the driver's cabin.
Abnormal noise issues:
During second or third gear acceleration, a continuous rubbing sound of rubber is heard, caused by the wear of the internal rubber components.
During bumpy road driving, metal collisions or buzzing sounds may occur, resulting from loose friction of components.
Other related symptoms
Safety hazards:
When the mount is damaged, the engine screw components may become loose, and long-term vibration may cause engine displacement or oil leakage.
Increased body resonance reduces driving comfort, and in severe cases, triggers the warning light of the electronic stability system.
Performance impact:
Lack of acceleration power or increased fuel consumption, as the engine is not securely fixed, affecting the efficiency of power transmission.
Reduced handling performance, slow response during sharp turns.
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAXUS auto parts welcome to buy.
