Tungsten alloys, with their high density (17-18.5 g/cm3), high strength (tensile strength up to 900-1200 MPa), and excellent corrosion and wear resistance, serve as critical components for optimizing power transmission, stability, and efficiency in automobiles.
In traditional internal combustion engine vehicles, tungsten alloy counterweights are widely used in crankshaft and flywheel balance designs. The crankshaft, as the heart of the engine, has its operational smoothness affecting power output and noise control. Tungsten alloy counterweight blocks significantly reduce vibration and torque fluctuations by adjusting the dynamic balance of the crankshaft, thereby extending engine lifespan. Additionally, as a key component for power storage and transmission, the flywheel benefits from tungsten alloy counterweights to minimize inertial imbalance, ensuring smooth shifting and acceleration.
In the new energy vehicle sector, the weight distribution of battery packs is crucial for range and handling performance. Tungsten alloy counterweights optimize vehicle dynamic balance by adjusting the center of gravity in battery modules or electric drive systems. Furthermore, electric vehicle motor rotor systems rely on tungsten alloy counterweights to balance high-speed rotating components, reducing noise and improving energy conversion efficiency. Thanks to the high density of tungsten alloys, designers can adjust weight distribution without increasing volume.
In motorsports, Applications of tungsten alloy counterweights are extensive for fine-tuning a vehicle’s center of gravity, which in turn enhances grip, handling response, and track performance. Racing designs pursue extreme weight distribution, such as front-heavy/rear-light or low center of gravity layouts, with tungsten alloy counterweights installed in the chassis, suspension system, or wheel hubs to adjust center of gravity positions. Moreover, the high-temperature resistance of tungsten alloys ensures structural stability in the high-heat environment of braking systems, extending the lifespan of brake discs and counterweight components.
