| dizel-part |
| Iran |
| 021-55410365 |
spring brake chamber
A dual-circuit brake booster integrates two independent vacuum chambers within a single steel housing. The primary and secondary diaphragm diameters typically range from 250 to 300 mm. Each circuit provides an independent force multiplication ratio between 4:1 and 6:1. The system utilizes two separate control valves rated for operational pressures up to 120 bar. The chambers are constructed from high-strength stainless steel with a 2 mm thickness. The independent output rods have a 50 mm linear travel with a tolerance of ±0.1 mm. This design ensures complete isolation of front and rear circuits in case of a leak. The assembly endures over 1 million operational cycles in durability testing.
The internal structure features two synthetic rubber diaphragms reinforced with fabric fibers. An electronic valve regulator EVP often modulates the boost ratio based on vehicle speed. Required vacuum pressure is a minimum of 0.9 bar absolute in both chambers. System response time is enhanced to under 80 milliseconds for emergency braking. An automatic fault detection system identifies a 0.2 bar pressure drop within 0.5 seconds. A central locking mechanism prevents asynchronous operation of the two circuits. Total assembly weight varies between 5.5 and 8 kilograms. This booster is certified

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| dizel-part | 021-55410365 |
| dizel-part |
| Iran |
| 021-55410365 |
brake chamber
A single-circuit brake booster consists of a drawn steel main housing with a thickness of 1.5 mm. The diaphragm diameter typically ranges from 200 to 250 mm in passenger vehicles. This system provides a force multiplication ratio boost ratio between 3:1 and 5:1. The vacuum pressure generated by the engine exceeds 0.8 bar absolute. The control valve is made from engineering polymers with heat resistance up to 120°C. The output pushrod uses carbon steel with an anti-corrosion coating. The main valve seat is machined with a dimensional tolerance of ±0.05 mm. The assembly is tested for over 500,000 operational cycles.
The internal structure features a synthetic rubber diaphragm resistant to oil and ozone. This diaphragm separates the chamber into vacuum and atmospheric sections. The piston rods linear travel is a maximum of 40 mm. The system includes a non-return one-way valve with a leakage tolerance below 1 cm³ per minute. System response time to driver input is less than 100 milliseconds. A fail-safe mechanical linkage directly transfers pedal force in case of failure. The total assembly weight typically ranges from 2.5 to 4.5 kg. This design complies with FMVSS 135 and ECE R13 safety standards.

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| dizel-part | 021-55410365 |






