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WEICHAI Fuel Injection Pump Gear 612600081529 for WEICHAI WP10/WP12 ENGIEN
FUNCTION
1. Driving the High-Pressure Fuel Pump:
This gear is installed within the engine's timing gear system; by meshing with the crankshaft gear and the intermediate idler gear, it transmits the engine's rotational power to the drive shaft of the high-pressure fuel pump.
It is responsible for driving the high-pressure fuel pump's camshaft, thereby inducing the reciprocating motion of the plungers to generate high-pressure fuel.
2. Ensuring Accurate Injection Timing:
The gear features timing marks which, during assembly, must be aligned with the corresponding marks on the crankshaft gear, camshaft gear, and other components. This ensures that the timing of fuel injection is perfectly synchronized with the piston stroke and valve opening/closing cycles (thereby ensuring the correct injection advance angle).
Working Principle
Driven by the camshaft, the high-pressure fuel pump pressurizes diesel fuel to an extremely high level, then injects it into the combustion chamber through the injectors with precise metering and timing.
This ensures the diesel engine achieves precise timing, quantity, and pressure in its fuel injection, thereby guaranteeing complete combustion, robust power output, and compliance with emission standards.
Installation Location
It is mounted on the front end of the high-pressure fuel pump's drive shaft and constitutes a rear-row gear within the timing gear system.
Transmission Relationship:
The crankshaft timing gear drives the intermediate idle gear.
The intermediate idle gear, in turn, drives the fuel injection pump drive gear (612600081529).
This gear directly drives the camshaft of the high-pressure fuel pump.
Performance Advantages
| No. | Performance Advantage Category | Detailed Advantage Description |
|---|---|---|
| 1 | High Strength & Wear Resistance | Made of high-strength alloy steel with precision heat treatment. The tooth surface has high hardness, excellent wear resistance and fatigue resistance. It can operate reliably under high-speed and high-torque engine conditions, resistant to tooth surface peeling, tooth breakage or deformation, resulting in long service life. |
| 2 | Precision Machining & Meshing Accuracy | Manufactured by high-precision machining centers. Tooth profile, tooth pitch and timing marks are precisely controlled for perfect fit with the crankshaft gear, idler gear and high-pressure fuel pump shaft. Small meshing clearance ensures smooth transmission, low noise and accurate fuel injection timing. |
| 3 | Transmission Efficiency & Stability | Efficiently transfers engine power to the high-pressure fuel pump, reducing energy loss. Improves fuel injection pressure and timing accuracy, resulting in smoother power output, lower fuel consumption, more complete combustion, and reduced black smoke and knocking. |
DETAILS
| DESCRIPTION | Fuel Injection Pump Gear | PART NUMBER | 612600081529 |
| WEIGHT |
2KG |
VOLUME |
15.3 cm × 15.3 cm × 4.5 cm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Daily Maintenance Recommendations
It is recommended to perform an inspection every 10,000 to 20,000 kilometers, or in conjunction with routine engine maintenance. (For vehicles operating under heavy loads, on long-distance routes, or in harsh conditions, it is recommended to shorten this interval to 5,000 to 10,000 kilometers.)
Inspection Checklist:
Remove the timing gear cover and visually inspect the gear teeth surfaces for signs of wear, spalling, cracks, broken teeth, or abnormal scoring.
Verify that the gear backlash (meshing clearance) is within normal limits; while the engine is running, listen for any abnormal metallic knocking or unusual noises.
Check that the timing marks are clearly visible and properly aligned, and confirm that the fuel injection timing is accurate.
Inspect all associated nuts and locking washers for looseness or damage.
Check the splined connection of the high-pressure fuel pump drive shaft for excessive play; also, inspect the gear surfaces for rust or accumulated oil deposits.
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