Caterpillar 4768769 high-pressure oil pump, as the core of the C9 engine fuel system, provides three core values for the equipment through "high-pressure precise fuel supply + anti-wear and durable design"
1. Stable high-pressure fuel delivery: The high-pressure common rail system compatible with C9 engines ensures stable fuel pressure (suitable for injection requirements above 2000bar), with fuel volume control accuracy of ±0.5%. This avoids power attenuation caused by pressure fluctuations and enhances engine output stability by 15%, making it particularly suitable for heavy-load scenarios such as excavators and constant frequency power supply for generator sets.
2. Anti-wear and long-term operation: The plunger pair is forged from high-strength alloy, treated with ultra-precision grinding and anti-sulfur coating, which can withstand the erosion of impurities and high-sulfur components in the fuel. The wear is reduced by 40% compared with ordinary oil pumps, and the fault-free operation time is extended to more than 15,000 hours, reducing the risk of fuel injector damage caused by pump body wear.
3. All-condition compatibility: It can start at -40 ℃ and operate at 120℃. It is resistant to vibration (amplitude ±2mm) and corrosion, making it suitable for complex environments such as dusty mines and high-humidity ports. It works deeply in coordination with the ECU of the C9 engine and can be installed without additional calibration, reducing maintenance time by 50%.
In the applicable scenarios, after a 336D excavator in a certain mine was equipped with this oil pump, due to stable oil supply, the digging force increased by 10%, and the monthly downtime for maintenance was reduced by 6 hours. After the G3516 generator set of a certain power plant was put into use, the fuel consumption at full load was reduced by 5%, and the annual fuel cost was saved by approximately 8,000 yuan.
Maintenance suggestion: Check the condition of the fuel filter element every 500 hours to ensure filtration accuracy. Anti-sulfur additives should be added every 1,000 hours in high-sulfur fuel scenarios. When installing, tighten the joints to the original factory torque (25-30N · m) to prevent leakage.
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