Distinguishing between springs and shock absorbers
Category: Industry News
2025-07-24 11:11
Springs and shock absorbers play complementary roles in automotive suspension systems: springs are mainly responsible for buffering road impacts and supporting the vehicle body, while shock absorbers suppress excess vibrations of springs through damping effects, and the two work together to ensure smooth driving.
The core function of a spring
Energy buffering and support.
By absorbing road surface impact energy through elastic deformation, instantaneous large impacts are converted into continuous small amplitude vibrations (such as buffering on speed bumps and bumpy roads).
Maintain the relative position between the vehicle body and tires to ensure the stability of wheel contact.
Dynamic response characteristics.
Quickly respond to changes in external forces, such as rapid compression or stretching during turns to cope with center of gravity shift.
However, due to its energy storage characteristics, it cannot autonomously consume energy, which can cause the vehicle to continuously bounce (such as multiple bumps after passing speed bumps).
The core function of shock absorbers
Energy dissipation and vibration suppression.
The damping force generated by the oil passing through the piston hole converts the mechanical energy stored in the spring into thermal energy and dissipates it, avoiding repeated shaking of the vehicle body.
Provide different damping forces during the compression stroke (impact absorption stage) and rebound stroke (spring recovery stage), accurately controlling the amplitude of vehicle motion.
Driving attitude control.
Suppress roll: Reduce the risk of rollover by distributing differentiated left and right damping during turns.
Stable acceleration/braking: prevent excessive lifting or sinking of the front of the car, and maintain tire grip.
Collaborative work mechanism
Energy processing division: The spring completes the primary buffering (energy storage) of the impact, while the shock absorber is responsible for secondary attenuation (energy consumption).
Dynamic balance adjustment: Household car shock absorbers are usually set with compression damping less than rebound damping, ensuring rapid absorption of impact while effectively suppressing rebound oscillation.