Gears are core mechanical components in a car's transmission system, enabling power transmission and conversion through tooth meshing. Their core functions include speed changing (e.g., the gearbox adjusts engine speed via different gear ratios to adapt to urban or high-speed driving), torque changing (the final drive alters torque output through gear combinations to optimize acceleration or deceleration performance), and direction changing (differential gears adjust the speed difference between left and right wheels to ensure turning stability). Common types include transmission gears (for shifting gears in manual/automatic gearboxes), differential gears (for coordinating wheel speed differences during turns), and spiral bevel gears (for high-torque and heavy-load applications). They offer advantages such as high transmission efficiency (up to 99%), compact structure, and long service life, but demand high manufacturing precision. In the Malaysian market, whether for conventional fuel vehicles or emerging electric vehicles, gear technology remains crucial for ensuring vehicle performance and reliability. For instance, the DCT dual-clutch transmission widely adopted in local mainstream models depends on precision gear sets to enable rapid gear shifts. Regular transmission fluid maintenance is essential to preserve gear lubrication and prevent wear-induced repair costs (typically ranging from RM500 to RM2000).
