G Series Marine Engine

G Series Marine Engine
G Series Marine Engine
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Description
The G series marine engine is a fourth-generation product which features a modular design on the basis of 3128 Xinlong marine engine designed by SDEC together with AVL. Most parts are shared with the previous generation product. The stroke of the high power SC15G engine is extended to 165mm, providing high reliability, high torque and good efficiency.

This series marine diesel engine has earned good reputation among users due to its high reliability, high torque at low speed, long maintenance interval and low use cost, etc. And it is praised as the perfect combination of power and efficiency. It is widely applicable to various inland transport ships, fishing boats, towboats, working ships and other boats, as well as marine generator sets of 120-300KW.

Outline dimensional drawing
G128 L: 1458mm W: 823mm H: 1028mm
SC15G L: 1680mm W: 884mm H: 1550mm
Technical parameters
Model Aspiration method Continuous power/speed kW/r/min Overload power/speed kW/r/min Unlimited Navigation Areas rated power/speed kW/r/min Unlimited Navigation Areas overload power/speed kW/r/min Min.fuel consumption g/kW.h Oil consumption g/kW.h Weight kg Notes
G128ZCa T 162/1500 178.2/1545 155.5/1500 171.5/1545 215 ≤0.4 1315 Main engine
G128ZCa1 T 162/1800 178.2/1854 155.5/1800 171.5/1854 215 ≤0.4 1315 Main engine
G128ZLCa TA 187/1500 206/1545 180/1500 198/1545 195 ≤0.4 1350 Main engine
G128ZLCa1 TA 200.5/1500 220.5/1545 193/1500 212.3/1545 195 ≤0.4 1350 Main engine
G128ZLCa2 TA 236/1500 260/1545 227/1500 250/1545 195 ≤0.4 1350 Main engine
G128ZLCa5 TA 267/1500 284/1545 254.9/1500 280.3/1545 195 ≤0.4 1350 Main engine
G128ZLCa3 TA 187/1800 206/1854 180/1800 198/1854 195 ≤0.4 1350 Main engine
G128ZLCa12 TA 236/1800 260/1854 227/1800 250/1854 195 ≤0.4 1350 Main engine
G128ZLCa15 TA 267/1800 294/1854 254.9/1800 280.3/1854 195 ≤0.4 1350 Main engine
SC15G400CA2 TA 267/1500 294/1545 254.9/1500 280.3/1545 195 ≤0.4 1350 Main engine
SC15G420CA2 TA 280/1500 308/1545 272/1500 300/1545 195 ≤0.4 1350 Main engine
SC15G460CA2 TA 308/1500 338/1545 300/1500 330/1545 195 ≤0.4 1350 Main engine
SC15G500CA2 TA 330/1500 363/1545 320/1500 352/1545 195 ≤0.4 1350 Main engine
SC15G420.1CA2 TA 280/1800 308/1854 272/1800 300/1854 195 ≤0.4 1350 Main engine
SC15G500.1CA2 TA 330/1800 363/1854 320/1800 352/1854 195 ≤0.4 1350 Main engine
Bore × stroke (mm) Displacement (L) Type Aspiration Steady speed governing rate (%) Idling (r/min) Exhaust temperature (℃) Compression ratio Oil capacity (L)
G128 135x150 SC15G 135x165 12.8 14.2 In-line, 6-valve T-Turbocharged TA-Turbocharged and intercooler 0%-5% 680 ≤550 15.75:1 15.55:1 32.5
Note
  • Flywheel house and flywheel are SAE1# and SAE14#.
  • There are single-layer and two-layer high pressure oil pipes optional.
Features
  • Through FEA modal analysis and coupling strength calculation, we improved designs like body strengthening and the installation of an integral cylinder head.
  • 15G adopts integral non-quenched and tempered steel crankshaft to make the fatigue resistance and service life of the engine improved by 30%.
  • The combustion system is optimized. After CFD analysis, the large flow cooling pump and oil pump and new type high-efficiency pressurizer are adopted to have a minimum fuel consumption of 198g/kW.h and a maximum torque of 2300N.m. This realizes the requirements for marine engine of low oil consumption and good acceleration property.
  • After improved designs like flange fuel injection pump drive, added new type oil-gas separation device, optimized thermostat and fuel pipeline, integral heat exchanger and expansion bank and new type sealing gasket, the product quality of this G series product is improved and the visual layout is also more reasonable.
  • This G series engine adopts cracking connecting rod and core-pulling water-air intercooler. The spare parts universality with previous generation product is high, reducing operation cost with convenient maintenance.

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diesel engine, SDEC engine, commercial engine, industrial engine

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