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Weichai WP6C122-15 Marine Propulsion Engine: The Definitive Guide for Commercial Vessel Operators
The Weichai WP6C122-15 Marine Engine stands as a global benchmark for durability, thermal efficiency, and mechanical simplicity in the commercial maritime sector. Developing 90kW (122HP) at a stabilized 1500rpm, this 6-cylinder in-line, water-cooled diesel powertrain is meticulously engineered for continuous duty. Unlike light-duty high-speed recreational boat engines, the WP6C122-15 Marine Diesel Engine is purpose-built to withstand the punishing environments of commercial fishing, inland cargo transport, and rugged workboat applications.
As a premier global Weichai Marine Engine Supplier, HekoPower bridges the gap between premium Chinese engineering and international fleet operators. Whether you are looking for a standalone WP6C122-15 Propulsion Engine, seeking a direct factory WP6C122-15 Wholesale Price, or establishing a supply chain for bulk fleet repowering, HekoPower delivers certified equipment, comprehensive technical backing, and an unbroken global logistics pathway.
Tech Specs of Weichai WP6C122-15
General Engine Data
Engine Model: Weichai WP6C122-15
Cylinder Count: 6 Cylinders in Line
Engine Type: 4-stroke, water cooled, in-line, turbocharged and aftercooled
Total Engine Displacement: 6.75 L
Bore * Stroke: 105×130 (mm)
Net weight: 750 kg
Overall Dimension: 1360×890×1054 (mm)
Key Performance Data
Rated Power: 90 kW / 122 HP
Rated Speed: 1500 RPM
Idle Speed: 650±30 RPM
Minimum fuel consumption rate: 212 g/kW·h
Oil consumption rate: ≤0.2 g/kW·h
More Technical Data
Certification: IMO Tier II
Aspiration: turbocharged and aftercooled
Starting system: Electrical
Rotation(facing the flywheel) : Counter-clockwise
Fuel system: Mechanical pump
Power rating: P1
Noise: ≤98dB(A)
Why Choose the Weichai WP6C122-15 Marine Diesel Engine?
Selecting the right marine propulsion engine is critical for maximizing vessel productivity and minimizing operating expenses. The WP6C122-15 marine diesel engine offers several advantages that make it a popular choice among commercial vessel operators.
Reliable 6-Cylinder Marine Power
The engine utilizes a durable inline six-cylinder structure engineered for continuous-duty marine operation. Its balanced design helps reduce vibration and enhances onboard comfort while maintaining stable power output.
Fuel-Efficient Operation
For vessel owners focused on profitability, fuel economy is a key consideration. The 90kW mechanical pump marine engine Weichai design delivers efficient fuel combustion, helping reduce overall fuel consumption during long voyages and daily operations.
Easy Maintenance
The WP6 series is known for its simple mechanical architecture, allowing routine servicing to be performed efficiently. Easy access to filters, pumps, and maintenance points reduces downtime and lowers service costs.
Proven Marine Durability
Designed specifically for marine environments, the engine features corrosion-resistant components and a reliable water-cooling system that supports continuous operation in challenging conditions.
Technical Comparison: Why Choose the WP6C122-15 Variant?
The Weichai WP6 series is a highly versatile family of marine motors. However, select variations are built for completely distinct use-cases. To avoid purchasing an mismatched engine profile, fleet managers must look closely at how the WP6C122-15 compares to higher-horsepower options.
The 1500 RPM Low-Speed Strategy vs. 2100+ RPM High-Speed Models
Models like the Weichai WP6C140 or WP6C150 often operate at 2150 to 2300 rpm to extract higher horsepower from the same 6.75L block. The Weichai WP6C122-15, by limiting its rated output to 1500 rpm, substantially lowers mean piston speeds. The immediate real-world results are reduced frictional wear on the crankshaft bearings, vastly lower thermal loads, and an significantly extended Mean Time Between Overhauls (MTBO). For continuous operations where an engine runs 24/7 for weeks at a time, the 1500 rpm platform is inherently more reliable.
Mechanical Injection Pump vs. Electronic Common Rail Systems
While modern electronic common rail systems offer marginal emission advantages, they fail catastrophically when subjected to contaminated marine fuel or remote deployment scenarios lacking high-end diagnostic computers. The 90kW mechanical pump marine engine Weichai utilizes purely mechanical governors and a robust inline pump. It can safely burn varying grades of marine diesel and can be diagnosed, serviced, and repaired entirely by a standard onboard mechanic using basic hand tools.
Real Application Scenarios: Where the Engine Thrives
Understanding where to deploy the WP6C122-15 is key to maximizing vessel operational efficiency. Here are the specific vessel archetypes where this 90kW unit acts as the best marine engine solution:
Water Cooled 122HP Diesel Engine for Commercial Fishing Boat & Trawlers
For a commercial fishing boat propulsion engine, raw speed is less important than constant, heavy low-end torque. When a trawler drags a heavy net along the seabed, the engine must handle extreme resistance without bogging down or overheating. The 122HP fishing boat engine provides an unyielding power reserve at 1500 rpm, allowing the Weichai engine for trawler boats to maintain safe, steady positioning in rough seas while driving mechanical or hydraulic power take-offs (PTOs) for winches.
Marine Engine for Workboats and Small Commercial Vessels
Push-boats, harbor utility crafts, and small utility workboats require a heavy duty marine propulsion engine capable of high duty cycles. The heavy-duty cast block and closed-loop freshwater heat exchanger layout make this motor highly resistant to continuous stop-and-go maneuvers, hull-bumping impacts, and heavy load towing.
Marine Engine for Passenger Boats and Inland Waterway Vessels
Ferry operators operating on inland rivers, deltas, and coastal routes value quiet operation, low smoke profiles, and long service intervals. The balanced 6-cylinder architecture inherently cancels out the primary and secondary vibrations common in 4-cylinder layouts, protecting the structural integrity of passenger hulls and ensuring passenger comfort.
Maintenance, Service Parts, and Replacement Protocols
To sustain the legendary reliability of your Weichai engine, establishing a disciplined preventative maintenance schedule is paramount. As an authorized Weichai Marine Engine Distributor, HekoPower stocks every essential component to keep your vessel in active service.
Essential WP6C122-15 Maintenance Kit Protocols
- First 50 Hours of Operation (Break-in Period): Flush the initial factory lube oil, replace the primary oil filter elements, and check the torque on all cylinder head fasteners.
- Every 250 Hours: Replace the secondary fuel filters, inspect the water separator system, check the tension on the raw water pump belt, and clean the air intake air filters.
- Every 500 Hours: Replace the sacrificial zinc anodes inside the heat exchanger tubes to prevent galvanic corrosion. Inspect the valve clearances (0.30 mm intake, 0.40 mm exhaust when cold).
- Every 1500 Hours: Conduct a thorough inspection of the turbocharger booster bearings, pull the mechanical fuel injectors for pressure testing/spray pattern calibration, and flush the freshwater cooling loops.
Genuine Weichai WP6C122-15 Replacement Spare Parts Support
Using counterfeit or substandard aftermarket engine parts will compromise your IMO Tier II compliance and lead to premature mechanical failure. HekoPower is a leading global WP6C122-15 Exporter of factory-certified Weichai WP6C122-15 spare parts. We maintain a massive warehouse inventory of:
- WP6C122-15 Service Parts: Complete top-end gasket kits, matched piston and liner assemblies, replacement marine fuel injectors, and high-durability raw water pump impellers.
- Critical Engine Parts: Forged steel crankshafts, turbocharger assemblies, oil coolers, and freshwater heat exchanger cores.
- Emergency Onboard Kits: HekoPower custom-compiles a specialized WP6C122-15 Maintenance Kit containing vital filters, belts, gaskets, and injectors specifically designed to be stored in your ship’s hull for instant mid-voyage emergency repairs.
Global Sourcing & Procurement: Partnering with HekoPower
Navigating the procurement of industrial maritime machinery requires a dependable partner. HekoPower streamlines the acquisition process whether you need to buy Weichai WP6C122-15 units individually or source entire containers for commercial fleets.
Accurate Pricing and Worldwide Logistics
When searching for the Weichai WP6C122-15 price, beware of misleadingly low online quotes that strip away the essential marine gearboxes, control panels, and certificates. HekoPower provides comprehensive, fully transparent quotations. Our established B2B supply lines provide an optimized Weichai 6 cylinder 1500 rpm marine motor price structure tailored directly to shipyards, fleet operators, and maintenance contractors.
Regional Distribution Frameworks
No matter your location, HekoPower operates a reliable logistics network to deliver heavy machinery right to your shipyard or home port. We serve as a trusted:
- Weichai Marine Engine Supplier USA (Ensuring compliance and secure delivery across North American ports)
- Weichai Marine Engine Supplier UAE (Servicing the Middle East’s maritime commercial corridors)
- Weichai Marine Engine Supplier Indonesia & Philippines (Supporting the vast Southeast Asian inter-island shipping and commercial fishing fleets)
- Weichai Marine Engine Supplier Nigeria (Empowering West African coastal trading and oil-field support infrastructure)
Weichai 12WH17 series marine diesel engine, original products from Weichai. This series mainly includes 12WH17C1224-2, 12WH17C1360-2, 12WH17C1496-2, 12WH17C1564-5, 12WH17C1700-5, 12WH17C1836-5, 12WH17C1972-5, 12WH17C2203-5.
Frequently Asked Questions (FAQs)
What is the exact dry weight and physical dimensions of the WP6C122-15?
The engine features an exceptionally compact envelope for a 6.75-liter unit. Its standard dry weight is roughly $700\text{ kg}$. To request exact WP6C122-15 dimensions drawings and structural CAD blueprints for hull integration, simply message our engineering department via our contact page.
Can the Weichai WP6C122-15 engine be coupled to a marine gearbox?
Yes. The flywheel housing matches international standard SAE configurations. HekoPower can supply the engine pre-coupled with a matched Advance or Hangzhou marine gearbox (popular ratios include 3:1, 3.5:1, or 4:1) perfectly optimized for low-RPM, high-torque propulsive output.
How do I get an official Weichai WP6C122-15 specifications pdf?
HekoPower makes all technical documentation easily accessible to ship captains and marine engineers. You can download the official Weichai WP6C122-15 specifications pdf directly through our technical resource portal or request it from your HekoPower sales specialist.
What is the advantage of a "Booster" Turbocharger over a standard naturally aspirated system?
The booster configuration increases the mass of air entering the cylinders without placing extreme thermal stress on the internal components. This ensures clean, smoke-free combustion under heavy loads and guarantees the high torque output needed for demanding commercial marine operations.
How can I verify that I am buying a Genuine Weichai WP6C122-15 engine?
Every engine delivered by HekoPower features an unalterable factory-stamped nameplate containing a unique identification serial number. This number can be fully cross-referenced in Weichai’s central manufacturer database to guarantee authenticity, full warranty support, and access to genuine replacement parts.
