HM618C Marine Engine Series

The HM618C Marine Engine Series is designed to deliver reliable power and consistent performance for marine propulsion applications. Featuring a six-cylinder, inline, water-cooled, four-stroke, direct-injection diesel configuration, the engine combines robust construction with a turbocharged and intercooled intake system to support efficient combustion and dependable operation in demanding marine environments.

With an 11.596-litre displacement and rated power options of 240 kW, 258 kW, and 294 kW, the HM618C series accommodates different marine power requirements at rated speeds of 1,500, 1,800, and 2,150 rpm, respectively. Its two-valve-per-cylinder design, dry cylinder liners, and 17:1 compression ratio support reliable engine operation, while the electric starting system provides convenient starting and the 27–28-litre oil sump capacity supports practical maintenance.

Designed for dependable power delivery, the HM618C features a firing order of 1-5-3-6-2-4 and an idle speed of 650 ± 30 rpm. With an SAE 1 flywheel specification, IMO Tier II emissions classification, and a net weight of approximately 1,100 kg, the HM618C Marine Engine Series is a practical solution for vessels requiring reliable diesel propulsion and consistent performance.

Key Features

• Six-cylinder, inline diesel engine

• Water-cooled, four-stroke, direct-injection design

• Turbocharged and intercooled intake system

• Two valves per cylinder

• 11.596-litre total displacement

• Rated power options of 240 kW, 258 kW, and 294 kW

• Rated speeds of 1,500, 1,800, and 2,150 rpm

• Electric starting system

• Dry cylinder liners

• IMO Tier II emissions classification

• SAE 1 flywheel specification

Technical Specifications

• Engine model: HM618C

• Engine type: Marine diesel engine

• Number of cylinders: 6

• Bore × stroke: 126 × 155 mm

• Total displacement: 11.596 L

• Rated power: 240 kW / 258 kW / 294 kW

• Rated speed: 1,500 / 1,800 / 2,150 rpm

• Intake type: Turbocharged and intercooled

• Compression ratio: 17:1

• Valve configuration: 2 valves per cylinder

• Fuel consumption rate: Not specified in the supplied data

• Oil/fuel consumption ratio: 0.5% (as specified)

• Idle speed: 650 ± 30 rpm

• Firing order: 1-5-3-6-2-4

• Starting method: Electric start

• Smoke intensity: ≤1.0 Rb

• Noise limit: 108 dB

• Emissions classification: IMO Tier II

• Flywheel specification: SAE 1

• Oil sump capacity: 27–28 L

• Net weight: 1,100 kg

• Dimensions (L × W × H): 1,534 × 807 × 1,512 mm