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Weichai 12WH17C1836-5 Marine Diesel Propulsion Engine: The 1350 kW Solution for Commercial Vessels
The Weichai 12WH17C1836-5 is a definitive standard in commercial marine propulsion, blending a compact high-rigidity structural footprint with the legendary power density of a 12-cylinder V-type architecture. Co-developed through a strategic joint venture between the Weichai Group and FEV Germany, this premium Weichai medium speed marine diesel engine delivers exactly 1350 kW (1836 Ps) at an optimized operating speed of 1500 r/min. Engineered explicitly for continuous, heavy-duty commercial operations, its Weichai 1350 kW continuous P1 duty rating guarantees stable, non-stop operation under severe load conditions.
As a premier, factory-direct Weichai marine engine supplier and international Weichai marine engine exporter, HekoPower provides not only bare engine blocks but fully optimized, integrated propulsion packages. Whether you require a drop-in engine replacement or a comprehensive new build setup complete with gearboxes and matching shaft assemblies, our global distribution network ensures factory-direct Weichai 12WH17C1836-5 price advantages paired with lifetime technical backing.
Tech Specs of Weichai 12WH17C1836-5
General Engine Data
Engine Model: Weichai 12WH17C1836-5
Cylinder Count: 12 Cylinders in Line
Engine Type: 4-stroke, water cooled, in-line, turbocharged and aftercooled
Total Engine Displacement: 54.48 L
Bore * Stroke: 170×220（mm）
Net weight: 5300 kg
Overall Dimension: 2256×1331×1856 (mm)
Key Performance Data
Rated Power: 1350 kW / 1836 HP
Rated Speed: 1500 RPM
Idle Speed: 650±30 RPM
Minimum fuel consumption rate: ≤200 g/kW.h
Oil consumption rate: ≤0.3 g/kW·h
More Technical Data
Certification: IMO Tier II / China Stage II Inland Marine
Aspiration: turbocharged and aftercooled
Starting system: Electrical
Rotation(facing the flywheel) : Counter-clockwise
Fuel system: HPCR
Power rating: P1
Noise: ≤111 dB(A)
Comprehensive Engineering Comparisons
When evaluating medium-speed engines in the 1300–1400 kW power band, fleet engineers typically compare the Weichai 12-cylinder marine engine against competing multi-cylinder configurations and traditional mechanical platforms like the legacy Weichai 8170 series.
Weichai 12WH17C1836-5 vs. Legacy Mechanical Engines
Traditional mechanical fuel pump propulsion lines offer simplicity but struggle with modern efficiency and emissions standards.
- Fuel Economy & Automation: The electronically controlled common rail system of the 12WH17C1836-5 yields up to a 7% reduction in fuel usage compared to older mechanical inline pumps. The ECU automatically tracks and alters fuel delivery in real-time based on sea state conditions, preventing over-fueling and black smoke during acceleration.
- NVH Control: Thanks to its high-precision injection timing and solid vermicular graphite cast iron cylinder block, mechanical noise and structural vibration are reduced by 20% compared to mechanical pump setups, increasing onboard crew comfort and reducing hull weld fatigue.
V12 Common Rail vs. Inline Multi-Cylinder Engine Layouts
Selecting between a 12-cylinder V-type engine like the 12WH17C1836-5 and an inline 6 or 8-cylinder alternative of equivalent power alters your vessel's structural layout requirements:
- Engine Room Footprint Efficiency: The V-type design splits its 54.48-liter displacement across two banks of six cylinders angled compactly. At a total length of 2256 mm, the 12WH17C1836-5 is significantly shorter than equivalent inline platforms, saving valuable cargo hold or workspace length.
- Rotational Balance and Structural Torsion: A 60-degree V12 engine block benefits from natural internal rotational balance. The power strokes overlap every 60 degrees of crankshaft rotation, delivering smoother torque output to the marine gearbox and reducing torsional strain on the shafting system compared to high-displacement inline engines.
Real-World Application Profiles
The physical design, continuous P1 duty cycle, and rigid build characteristics make this Weichai marine propulsion engine the preferred choice for several heavy commercial boat profiles:
- Commercial Trawlers & Fishing Boats: For ocean-going fishing vessels working deep-sea grounds, the engine provides the sustained towing power needed to drag heavy trawl nets at slow speeds without risking thermal overload or high exhaust temperatures.
- Inland Waterway Towboats & Pushers: Transporting heavy barges along rivers demands non-stop propulsion. This marine propulsion engine for inland waterways provides the massive torque needed to control multi-barge strings through tight currents and shallow channels.
- Cargo Vessels & Coasters: For regional transport ships and coastal bulk carriers, the high power marine engine for transport ships maintains efficient, continuous cruising speeds at its sweet spot of 1500rpm, protecting thin operational margins through its 185g/kW·h fuel profile.
- Workboats & Patrol Vessels: Harbor tugs, pilot boats, and government vessels benefit from the rapid throttle response delivered by the four-turbo system, allowing immediate speed increases during rescue or interception profiles.
Maintenance Protocols & Lifecycle Management
To secure the certified Weichai marine engine overhaul interval of 20,000 operational hours, fleet mechanics must adhere to a structured technical maintenance routine.
Proactive Fleet Maintenance Schedule
- Every 250 Hours: Perform an engine oil and filter swap using high-grade marine lubrication oil. Clean and inspect the centrifugal oil filter. Check the anti-explosion high-pressure fuel pipe and leak-off fuel monitoring connections for signs of micro-abrasions.
- Every 1000 Hours: Clean the air filter elements within the stainless-steel shell housings. Inspect the cast aluminum heat exchanger zinc anodes and replace them if more than 50% depleted to prevent galvanic corrosion in seawater channels. Check all valve clearances.
- Every 5000 Hours: Inspect and calibrate the high-pressure fuel injectors. Test the Weichai original ECU error logs via diagnostic tools. Visually check the four-turbocharger turbine wheels for carbon accumulation.
Critical Spare Parts Planning for HekoPower Clients
As a dedicated Weichai marine engine distributor, HekoPower stocks complete inventories of genuine Weichai marine engine parts to prevent operational downtime. When operating far from ports, vessel managers should keep an onboard critical spares kit containing:
- Complete sets of primary and secondary switchable fuel fine filters and dual-element oil filters.
- Spare high-pressure fuel injector nozzles and high-pressure fuel pipe assemblies.
- Seawater pump impellers, fresh-water pump seals, and a complete engine cylinder head gasket set.
- Replacement cylinder liner carbon scraping rings and matching three-piece piston ring kits (Weichai 12WH17C1836-5 spare parts standard).
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 classification society certificates are available for the Weichai 12WH17C1836-5?
As an authorized Weichai marine engine supplier, HekoPower delivers this engine series with major global classification society type approvals. Depending on your hull registry requirements, engines can be supplied with type certifications from CCS (China Classification Society), BV (Bureau Veritas), ABS (American Bureau of Shipping), and LR (Lloyd's Register).
Does this engine comply with international marine emissions laws?
Yes, this engine is fully certified as a Weichai IMO II marine engine. It meets the nitrogen oxide limit criteria set by the IMO Tier II and China Stage II marine environmental regulations, allowing it to be legally operated in all international waters and commercial emission control areas (ECAs).
Where can I obtain official technical documentation or a Weichai 12WH17C1836-5 datasheet?
You can request the official Weichai 12WH17C1836-5 specifications pdf directly through the HekoPower product inquiry channel. Our engineering team provides detailed dimensional installation blueprints, fuel map charts, and installation schematics to assist your naval architect with retrofits or new hull builds.
What is the advantage of purchasing from a factory-direct exporter like HekoPower?
Purchasing your engine through HekoPower guarantees that you receive genuine Weichai marine engine parts and a brand-new engine built in Weichai’s constant-temperature assembly facilities. We offer factory-direct pricing, custom propulsion engineering integration (matching gearboxes and shaft lines), and comprehensive lifecycle technical Weichai marine engine support.
