The Weichai Baudouin WP6CD90E200NG is a high-reliability, marine-certified inline-6 natural gas diesel engine designed for auxiliary generator drive and light propulsion in commercial vessels, fishing boats, workboats, yachts, and coastal craft. This 6-cylinder, 4-stroke, turbocharged and aftercooled engine with dual-fuel (natural gas/diesel) capability, direct injection, and electronic governor produces 90 kW at 1,500 RPM (50 Hz), delivering up to 550 Nm torque in a lightweight 6.75 L displacement package, ensuring dependable, low-emission performance in extreme marine conditions up to 1,000 m altitude.
Fuel Efficiency and Operational Economy: Rated at a minimum fuel consumption of 210 g/kWh on natural gas (approx. 15 L/hour equivalent at full load, with diesel pilot for ignition), it achieves 20% better partial-load efficiency than traditional diesel engines, supporting longer runtime, reduced refueling stops, and significantly lower emissions for cost savings in fuel-intensive operations while qualifying for green incentives.
Consistent Power and Durability: Features wet cylinder liners, a 15:1 compression ratio, and bore/stroke of 105 × 130 mm for smooth torque delivery with ≤5% frequency stability. Handles 110% overload for 1 hour, protecting generators, navigation, and onboard electronics from surges, backed by a 30,000+ hour TBO for extended service life in dual-fuel mode.
Marine-Engineered Toughness: Compact design at ~650 kg dry weight and 1,500 × 900 × 1,200 mm, compliant with IMO Tier II, SOLAS, and classification standards (ABS, DNV, CCS) for shock, vibration, and corrosion resistance. Idle speed of 650 ±30 r/min ensures quiet operation at ≤98 dB(A), prioritizing crew comfort in confined spaces.
Reduced Maintenance Focus: 500-hour service intervals, 18 L oil capacity, and ≤0.2 g/kWh oil consumption minimize downtime by 30%; durable dry filters and ergonomic layout enable swift onboard servicing. The 24V DC starting system guarantees starts to -20°C (heater optional), supported by Weichai’s global network for 24-48 hour parts availability, with simplified dual-fuel system reducing complexity.
Effortless Connectivity: Electronic governor integrates with optional LCD digital panel for real-time monitoring, automatic fuel switching, and CAN-bus diagnostics. Compatible with hybrid systems and paralleling for multi-engine scalability and seamless vessel integration.
Eco-Compliant Versatility: Meets IMO Tier II / EPA Tier 3 emissions with 50-70% NOx reduction on natural gas, optimized for 45°C ambient via seawater cooling with ≤10 kPa exhaust back pressure—ideal for humid, saline environments, streamlining certifications and enhancing long-term sustainability for green shipping mandates.