According to the transmission mode is mainly 3 kinds of auxiliary

A is a mechanical linkage transmission drum parking brake the brake due to the transmission mode of operation is very flexible so only in many of the older cars appear to fit in between the gearbox and the transmission shaft. Hold the drive shaft so that the transmission shaft does not rotate the main reducer is no revolution in differential planetary gear also not rotation axle also not rotation so as to realize the parking automatic. This is old brake now almost no

Second is the braking mode of heavy vehicles almost all heavy vehicles (including cars and other heavy equipment by train) on the engine to pump air into the air storage tank (usually air pressure is 0.8MPA) and the gas tank will have received tracheal brake pedal the brake pump (pump) brake brake pump the valve will open the compressed air into the brake cylinder 1 can be transported through the trachea (drum brake) brake pump not in the intake when the leak (leak sick) as long as the brake piston pump will be divided in to push push brake adjustment arm (a lot of places called fly) brake adjustment arm like cam as a slightly rotation driven by a cam shaft rotation to cam rotation so that brake shoes on both sides to separate the system around the brake drum friction between the brake shoe and brake drum of animals Drawback is easy to lock 2 (disc brakes) brake total pump over pressure will flow into the brake pump brake branch pump pressure will be installed on the pump (is commonly referred to as the brake caliper) of the brake shoe pushed forward by (disc) between the brake shoe plate and the brake disc friction to realize deceleration disadvantages of power in a small brake force II if brake disc steel lack of fire or materials containing high amount of carbon brake disc rupture (a consequence is drag no law can only drag the body top hired ferry pessary)

The third is the car with the most is through an oil pressure braking principle and pneumatic system similar. Just have to exhaust air or the brake didn't effect. Namely: cup, brake total pump, ABS, brake branch pump brake pad and the brake drum / brake disc friction brake. "- >" on behalf of the connecting pipe

According to the brake mode is mainly 2 kinds of auxiliary

First is the principle of drum brake is through pump pushes the adjustable arm to drive a cam shaft through the cam shaft rotates and pushes two brake shoes to brake the brake shoe and brake drum friction brake

The second is that the disc brake principle is to realize the brake by using the piston in the cylinder to push the brake shoe brake through the brake shoe.

Other what kind of auxiliary braking electric eddy current retarder commonly known as electric brake by installed in the brake pedal and the braking gas road potentiometer or pressure sensor control host to host computer using relay control box of eddy current retarder of the slow speed coil with high currents, generated with the direction of the motion of a drive shaft instead of the magnetic force and the transmission system is the direction of movement of the match to realize deceleration!