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QSB7
Cummins
The Cummins QSB7 is a versatile and technologically advanced 6.7-liter diesel engine designed for demanding applications in the marine and power generation sectors. It delivers a powerful combination of high performance, superior fuel efficiency, and exceptional reliability.
Core Technical Specifications
The QSB7 engine is engineered for two primary markets:
Marine Applications: It serves as a premier choice for both recreational and commercial vessels.
Propulsion Engine: Powers yachts, sport cruisers, and commercial workboats, available in a wide range from 230 to 550 HP.
Auxiliary/Genset Engine: Provides reliable onboard electrical power for vessels of all sizes.
Power Generation: As a robust G-Drive engine, the QSB7 is the core of dependable generator sets.
High-Pressure Common Rail Fuel System: The Bosch HPCR system ensures ultra-precise fuel injection, leading to excellent fuel economy, remarkably quiet operation (with up to 80% noise reduction at idle), and virtually smoke-free exhaust.
Advanced 24-Valve Engine Design: This design, paired with a perfectly matched turbocharger, delivers industry-leading power density and performance for its compact size.
Intelligent Electronics: The engine features a sophisticated 24V Quantum System Electronic Control Module (ECM) for comprehensive monitoring, diagnostics, and complete engine protection. It seamlessly integrates with SmartCraft® digital vessel systems for enhanced control and data access in marine applications.
Durable & Service-Friendly Design: Built with durability in mind, features include a cast water-cooled exhaust manifold for safety and a front-mounted lubrication system that extends oil service intervals to 500 hours when using ULSD fuel. For stationary power, the generator sets are designed for easy maintenance and fast serviceability.