Product principle
1. The controller issues work instructions;
2. After receiving the command, the proportional valve will proportionally press the compressed air in the storage tank into the oil storage chamber;
3. The oil in the retarder is transported by compressed air from the oil storage chamber to the working chamber composed of the stator and rotor;
4. The fluid impact of the retarder oil passing through the fixed rotor forms a reactive force on the rotor, that is, a braking torque acting on the rotor;
5. After receiving the braking torque, the retarder gear and retarder rotor transmit it to the gearbox gear, which in turn transmits it to the transmission shaft and tires, achieving a deceleration effect.
Performance parameters of the retarder FHQ400
| Model specifications | FHQ400 |
| First oil injection volume | 6.8L |
| Maximum speed | 5300RPM |
| Control medium | compressed air |
| Weight (without oil, without gears installed) | 52 KG |
| Maximum speed of transmission shaft | 2600RPM |
| Maximum braking torque of transmission shaft | 4000N.M |
| Working current | < 1A |
| Drive shaft speed at maximum braking torque | 1100RPM |
| Rated operational voltage | 24V |
| Maximum braking power | 500KW |
| Idle power loss (at a transmission shaft speed of 1500rpm) | <1.5KW |
| Response time (80% of maximum braking torque) | < 1.5S |
Product features
More Safety
-Provide continuous braking to achieve safe driving on long-distance downhill slopes;
-The maximum torque output can reach 4000N, combined with the vehicle's braking system, providing the driver with maximum safety assurance;
-Undertake over 80% of braking tasks.
More Safety
More Economical
-Extend the service life of brake pads by more than 4 times, saving brake pad costs and maintenance labor costs;
-Save water tank, can carry 1 ton of cargo more;
-Brake pads and tires have lower temperatures and longer usage times.
More Economical
More Efficient
-The retarder provides additional safety assurance, allowing users to drive at a faster speed;
-Save maintenance time such as parking, adding water, and replacing brake pads;
-Lightweight design, more fuel-efficient.
More Efficient
More environmentally friendly
-Hydraulic retarder can reduce dust emissions;
-Reduce mechanical wear of brake pads and minimize noise generation;
-Reduce exhaust emissions.
More environmentally friendly