Marine Propulsion Engine

Marine Diesel Engine

WP6 142-200 HP Diesel Engine

The Weichai WP6 142–200 HP Marine Diesel Engine delivers robust, efficient propulsion for small- to mid-size vessels. It features individual cylinder heads with honed liners, freshwater-cooled lube oil coolers, spin-on oil filters, duplex fuel filters with a water separator, and a P-type inline injection pump. A corrosion-resistant metallic paint, high-quality hoses, heat exchanger cooling, and a deep oil sump ensure long service life, low maintenance, and reliable performance in demanding marine environments.

SALIENT FEATURES

Individual cylinder heads with honed liners

Spin-on type oil filers

Fresh water-cooled lube oil coolers

Simple P-type inline injection pump

Duplex fuel filters fitted with water separator

High quality heat exchanger with expansion tanks

Five layers special metallic paint for long life against corrosion

High quality rubber hoses & clamps

Deep oil sump-extra operational care

TECHNICAL INFORMATION

Specification

Engine Model WP6C185-21 WP6C200-21
Rated power (hp) 185 200
Rated power (kw) 136 147
Rated speed (rpm) 2100
Rotating direction (Facing flywheel end) Anticlockwise
Bore X Stroke (mm) 105 x 130
Displacement (L) 6.75
No. of Cylinders 6 — Inline
Aspiration Turbocharged Turbocharged Aftercooled
Power output size SAE 1/14
Compression ratio 18:01
Emission standard IMO Tier II
Certification IRS/CCS/BV

Lubrication System

Oil sump capacity (L) 16

Fuel System

Injection pump type/Standard configuration Mechanical pump

Electrical system

Starting system voltage 24V DC

Cooling System

Total Coolant capacity (L)20
Recommended coolant specification premix with 50% Glycol

Dimensions and Weight

Length (mm) 1366
Width (mm) 904
Height (mm) 1061

FAQ- ENGINE

Weichai is your all-around engine solution for commercial purposes. It will offer a quick understanding of the brand, product, and industry.

Q. What is a marine propulsion engine?

A marine propulsion engine is the main power source that drives a ship or boat through the water. It converts fuel into mechanical power to rotate the propeller and move the vessel forward.

Q. Are Weichai marine propulsion engines fuel-efficient?

Yes, Weichai propulsion engines are engineered for high thermal efficiency, low fuel consumption, and long sailing hours, helping reduce operational cost for fishing, cargo, and passenger vessels.

Q. Can these engines handle long voyages?

Yes, they are built for continuous and reliable operation during long-distance sailing. Their robust design ensures stability even under heavy load and challenging sea routes.

Q. Do marine propulsion engines support harsh marine environments?

Absolutely. These engines are designed to resist corrosion, humidity, and temperature fluctuations, ensuring safe performance in coastal and deep-sea environments.

Q. What types of vessels can use these engines?

Weichai propulsion engines are widely used in fishing boats, cargo ships, patrol boats, ferries, workboats, and offshore support vessels.
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