Doosan 4V158TIH MARINE ENGINE

The Doosan 4V158TIH is a powerful, turbocharged industrial diesel engine designed for demanding applications that require robust performance, high efficiency, and long-term reliability. With a rated output of 390 kW (530 PS), this 4-cylinder inline engine belongs to Doosan heavy-duty 158 series and is engineered for a wide range of uses including marine propulsion, power generation, industrial equipment, and auxiliary power systems.

Built with a rugged cast-iron block and reinforced internal components, the 4V158TIH delivers outstanding durability even under continuous heavy loads. Its advanced turbocharger with air-to-air aftercooling optimizes air intake and combustion efficiency, resulting in improved power delivery, reduced fuel consumption, and lower exhaust temperatures. The engine’s fuel system is engineered for stable and precise fuel injection, enhancing combustion stability and responsiveness across varying operating conditions.

Designed for both stationary and mobile applications, the 4V158TIH offers excellent torque characteristics at low to mid-range speeds, making it suitable for propulsion systems, generator sets, and heavy machinery. The efficient cooling and lubrication systems ensure stable thermal management and extended service life, while easy-to-access service points facilitate routine maintenance and reduce downtime.

Whether deployed in commercial vessels, industrial plants, or heavy-equipment applications, the Doosan 4V158TIH combines high performance, fuel efficiency, and resilient construction — making it a reliable choice for operators seeking a balance of power and durability in tough environments. Its versatile design and broad support network ensure dependable operation and simplified support across global markets.

Technical Specifications

General Engine Data

• Engine Model: Doosan 4V158TIH

• Type: 4-stroke, water-cooled diesel engine

• Cylinders: 4 in-line

• Aspiration: Turbocharged with air-to-air aftercooler

• Bore × Stroke: 158 mm × 180 mm

• Displacement: ~11.22 liters

• Compression Ratio: Approx. 15.0 : 1

• Rated Speed: Typically ~1800–2000 RPM (varies by version)

• Fuel System: Direct fuel injection

• Rotation: Counter-clockwise (viewed from flywheel)

• Governor: Mechanical or electronic (depending on configuration)

Performance

• Rated Power: 390 kW (530 PS)

• Rated RPM: Around ~1800–2000 rpm (varies by specific rating)

• Torque: High torque across mid-range RPM for strong load handling

• Designed for continuous duty applications

Cooling & Lubrication

• Cooling System: Water-cooled jacket & aftercooler circuits

• Charge-Air Cooling: Air-to-air aftercooler for improved combustion efficiency

• Lubrication: Pressurized lubrication with full-flow filter

Physical Data

• Weight (Approx): ~1,000–1,300 kg (engine only, dry)

• Dimensions: Approx. 1,500 mm (L) × 900 mm (W) × 1,200 mm (H) (varies with accessories)

Systems & Features

• Turbocharging: Single turbocharger

• Fuel Delivery: High–pressure direct injection for stable combustion

• Cooling: Effective heat rejection designed for continuous operation

• Serviceability: Accessible service points for routine maintenance

• Mounting: Flexible mounting points for marine or industrial installation

Applications

• Marine propulsion (workboats, patrol boats, barges)

• Generator sets (Gensets) for standby/prime power

• Industrial drives (compressors, pumps, heavy machinery)

• Auxiliary power systems on vehicles and vessels