Dongfeng LoongGine Engine Compressor assembly 8104010-C3103

Designed to serve both the vehicle’s pneumatic braking system and air conditioning (AC) system (where applicable), the 8104010-C3103 assembly delivers a rated air output of 320 L/min at 1.0MPa—sufficient to charge the vehicle’s air storage cylinders (typically 4×20L) from 0.2MPa to 0.8MPa in under 90 seconds, meeting the fast charging requirements of heavy-duty truck brake systems. For AC-enabled configurations, it features a refrigeration capacity of 8.5 kW (at 3000 RPM), capable of cooling the cab from 45°C to 25°C in 15 minutes under standard conditions. The compressor’s dual-pressure regulation valve (pre-set to 0.8MPa for braking, 1.2MPa for AC) ensures independent, stable pressure supply to both systems, avoiding mutual interference

The compressor’s core components are built to withstand the high loads and harsh operating environments of heavy-duty trucking. The cylinder block and crankcase are crafted from high-strength aluminum alloy (ADC12) with precision die-casting, featuring a reinforced rib structure that enhances rigidity while reducing weight by 15% compared to cast iron alternatives. The piston rings are made of nitrided cast iron (surface hardness HRC 60-65) with a PTFE coating, ensuring low friction and wear resistance—supporting a service life of over 400,000 kilometers. The drive shaft is forged from 40Cr steel with quenching and tempering treatment, achieving a tensile strength of ≥900MPa to handle high torque inputs (up to 250 N·m) from the engine

Optimized for fuel efficiency—a key priority for modern heavy-duty engines—the 8104010-C3103 assembly incorporates multiple energy-saving features. Its variable-displacement mechanism (adjustable from 25% to 100% displacement) automatically reduces air output when the vehicle’s air storage cylinders are fully charged, cutting engine power draw by up to 3.5 kW (equivalent to 0.5 L/100km fuel savings) during highway cruising. The compressor’s roller bearings (double-row angular contact type) are filled with high-temperature lithium-based grease, reducing friction loss by 20% compared to standard ball bearings. Additionally, the intake valve uses a lightweight titanium alloy disc, minimizing valve response time and further lowering energy consumption during pressure regulation

Engineered to resist the harsh conditions of heavy-duty operations (e.g., dust, road splashes, and extreme temperatures), the 8104010-C3103 assembly meets the IP6K4 protection rating. The housing’s sealed gasket (made of fluororubber FKM) prevents dust ingress (IP6X) and low-pressure water jets (IPX4) from damaging internal components, while the oil seal (nitrile rubber NBR) ensures zero lubricant leakage even under high pressure. It operates reliably within a temperature range of -40°C to +120°C, maintaining performance in cold northern winters or hot southern summers. The assembly fully complies with China’s GB/T 13279-2002 (Automotive Air Compressors) and the European ECE R134a standard for AC systems, undergoing rigorous testing including 500-hour continuous load tests, 100,000-cycle pressure fatigue tests, and 500-hour salt spray tests to guarantee durability and safety