Description
Technical Overview
The barrel and plunger assembly is the most critical moving part within the fuel injection pump. The E206452120 model is manufactured with extreme precision to ensure that fuel is pressurized and delivered with absolute timing accuracy, maintaining the load balance across all cylinders of the GenSet.
- Compatible Engine Type: Daihatsu DK-20, DK-20e, and DK-20L series.
- Part Number / ID: E206452120 (Fuel Pump Element).
- Application: High-pressure fuel injection for Marine Generator Sets.
- Material: Specialized vacuum-degassed bearing steel, hardened to withstand the immense hydraulic stresses of heavy fuel injection.
Key Features & Performance
- Sub-Micron Tolerance: The plunger and barrel are lapped together as a matched set, ensuring a near-perfect seal that prevents high-pressure fuel bypass, even when operating with low-viscosity fuels like MGO.
- Abrasive Wear Resistance: Specifically designed to handle the challenges of Heavy Fuel Oil (HFO), featuring surface hardening that resists the abrasive effects of catalytic fines and fuel contaminants.
- Precise Helix Calibration: The control edge (helix) of the plunger is machined to provide stable fuel delivery from idling to full load, ensuring smooth engine governing and preventing RPM hunting.
- Optimized Surface Finish: A “mirror-finish” on the plunger surface reduces friction, preventing “sticking” or scuffing during rapid temperature changes when switching fuel types.
Why Source from Heybeli Marine?
In the maritime industry, the quality of a fuel element can mean the difference between a reliable power supply and a costly engine failure. Heybeli Marine supports your fleet with:
- Matched Pair Guarantee: We only supply the barrel and plunger as a factory-mated set to ensure the integrity of the high-pressure seal.
- Ready-to-Ship Inventory: We maintain permanent stock of DK-20 E206452120 elements to ensure immediate dispatch to global shipping hubs.
- Strict Quality Control: Every element is inspected and tested to meet the rigorous Japanese Industrial Standards (JIS) for marine diesel engines.
- Expert Technical Support: Our team can help verify part compatibility based on your pump’s nameplate and engine serial number to ensure a perfect fit.
Maintenance Tip: When replacing the E206452120 element, it is highly recommended to also replace the delivery valve and the fuel pump O-ring kits. This ensures the entire high-pressure circuit is restored to “as-new” condition.
