Is the car parked or moving when the handbrake is released?
1 Answers
When the handbrake is released, the vehicle moves. The handbrake needs to be engaged when parking. What we commonly refer to as "releasing the handbrake" means lowering the handbrake. For small cars, the handbrake is sometimes located behind the transmission, connected to the driveshaft where there is a brake disc, similar to a disc brake (though drum brakes also exist). The pulling force is transmitted there via steel cables to achieve parking brake functionality. Additional information: 1. Handbrake: The professional term for handbrake is auxiliary brake. Its principle differs from the main braking system, as it uses steel cables connected to the rear brake shoes to brake the vehicle. Prolonged use of the handbrake can cause plastic deformation of the steel cables. Since this deformation is irreversible, long-term use will reduce effectiveness and increase the handbrake's travel distance. 2. Handbrake principle: After pulling the handbrake, it utilizes a hydraulic auxiliary cylinder to push the main hydraulic cylinder beneath the vehicle, which then activates the air valve (this design prevents air noise from reaching the cabin). Once the air valve is activated, it brakes the driveshaft. The handbrake only brakes the driveshaft. For regular trucks, long-term braking is achieved by pulling the handbrake lever's steel cables. For higher-end trucks like Volvo, electronic control is used.
