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Zibo Chai N350/S dual-fuel engine is a medium-speed inline four-stroke high-power LNG/diesel dual-fuel engine; with the increasing strictness of emission regulations and the increasing shortage of oil and energy, energy conservation and low carbon have become the dominant direction of the development of internal combustion engine technology. Liquefied natural gas (LNG) has the characteristics of high energy density and low emissions (which can effectively reduce NOx emissions), which is of great practical significance to promoting my country's industrial transformation and upgrading and national energy structure adjustment.
Based on the N350 diesel engine, the N350/S dual-fuel engine has added a natural gas intake system and control system, mainly including natural gas intake pipes, electronic control units (ECUs), sensors, etc. ·N350/S dual-fuel engine does not change the various systems that the N350 diesel engine has, and is highly reliable.
The control logic of N350/S dual fuel engine mainly includes natural gas injection control, load control, speed regulation control, security control, etc. The N350/S dual-fuel engine forms a MAP diagram covering the entire engine operating conditions through control programming and data collection of crankshaft speed sensor, cam speed sensor, oil pressure, fuel temperature, charge air temperature, gas temperature, gas pressure, speed controller actuator throttle position and other data collection, thereby achieving free switching between dual-fuel modes and fuel modes and stable operation of dual-fuel engines.
The gas intake pipeline to the gas injection valve adopts a double-walled pipe structure. ·Using reasonable control logic, automatic conversion of dual-fuel engine mode can be realized to ensure full load operation in pure diesel mode in the absence of gas. The explosion-proof door is installed on the intercooling pipe, facing the charging air pressure stabilization chamber. It can quickly release the gas backfire and explosion energy, thereby protecting the engine air intake system from damage.
6N350ZLC/S series dual fuel engine technical specifications and parameters table
| Serial number No | name Name | Unit | Technical Specifications Technical specifications | |||||
| 1 | Type Type | / | Inline, four strokes, direct injection, turbocharged, irreversible In-line, four strokes, direct injection, turbocharger, irreversible | |||||
| 2 | model Model | / | 6N350ZLC/S-3 | 6N350ZLC/S-4 | 6N350ZLC/S-5 | 6N350ZLC/S-6 | 6N350ZLC/S-7 | 6N350ZLC/S-8 |
| 3 | Continuous power Rated power | kW/PS | 3032/4125 | 2942/4000 | 2756/3750 | 2574/3500 | 2426/3300 | 2207/3000 |
| 4 | Continuous speed Rated speed | r/min | 600 | |||||
| 5 | Cylinder diameter Cylinder bore | mm | 350 | |||||
| 6 | Piston stroke Piston stroke | mm | 450 | |||||
| 7 | Compression ratio Compression ratio | / | 6 | |||||
| 8 | Number of cylinders No. of cylinders | / | 259.77 | |||||
| 9 | Total displacement Total displacement | L | 14 | |||||
| 10 | Working stable speed Minimum stable speed | r/min | 240 | |||||
| 11 | Average piston speed Mean piston speed | m/s | 9 | |||||
| 12 | Average effective pressure Mean effective pressure | MPa | 2.3344 | 2.2651 | 2.1219 | 1.98 | 1.8678 | 1.6992 |
| 13 | Supercharge pressure Supercharged pressure | MPa | 0.43±0.01 | 0.42±0.01 | 0.40±0.01 | 0.38±0.01 | 0.36±0.01 | 0.34±0.01 |
| 14 | Explosion pressure Maximum exploration pressure | MPa | ≤ 17.0 | |||||
| 15 | Exhaust temperature of each cylinder Each cylinder exhaust temperature | ℃ | ≤450 | |||||
| 16 | Turbine front row temperature Exhaust temperature before turbocharger | ℃ | ≤600 | |||||
| 17 | Fuel consumption rate Fuel oil consumption | g/kw. h | 190+5% | |||||
| 18 | Oil consumption rate Lubrication oil consumption | g/kw. h | 1.0 | |||||
| 19 | Crank arrangement Crank arrangement | / | 1.6 2.5 3.4 | |||||
| 20 | Fire order Fire order | / | 1-2-4-6-5-3 | |||||
| 21 | Starting method Starting method | / | Compressed air start Compressed air starting motor | |||||
| 22 | Oil supply timing Fuel injection timing | ℃ A | 10 to 13.5 | |||||
| 23 | Starting air pressure | MPa | Starting pressure Max. starting pressure: 2.94MPa, starting pressure Min. starting air: 1.1MPa | |||||
| 24 | Natural gas working pressure | MPa | 0.51 | 0.5 | 0.48 | 0.46 | 0.44 | 0.42 |
| 25 | Substitution rate Maximum substitution rate | % | 90 | |||||
| 26 | Dimensions (L×W×H) | mm | 5598.7×1848.5×3624 | |||||
| 27 | Piston lift height The lifting height of pinston | mm | 3323 | |||||
| 28 | Cylinder lifting height The lifting height of cylinder liner | mm | 3798 | |||||
| 29 | The quality of the whole machine Weight | kg | About 37500 | |||||
8N350ZLC/S series dual fuel engine technical specifications and parameters table
| Serial number No | name Name | Unit | Technical Specifications Technical specifications | |||||
| 1 | Type Type | / | Inline, four strokes, direct injection, turbocharged, irreversible In-line, four strokes, direct injection, turbocharger, irreversible | |||||
| 2 | model Model | / | 8N350ZLC/S-4 | 8N350ZLC/S-5 | 8N350ZLC/S-6 | 8N350ZLC/S-7 | 8N350ZLC/S-8 | 8N350ZLC/S-9 |
| 3 | Continuous power Rated power | kW/PS | 4043/5500 | 3822/5200 | 3675/5000 | 3455/4700 | 3310/4500 | 2942/4000 |
| 4 | Continuous speed Rated speed | r/min | 600 | |||||
| 5 | Cylinder diameter Cylinder bore | mm | 350 | |||||
| 6 | Piston stroke Piston stroke | mm | 450 | |||||
| 7 | Compression ratio Compression ratio | / | 6 | |||||
| 8 | Number of cylinders No. of cylinders | / | 346.36 | |||||
| 9 | Total displacement Total displacement | L | 14 | |||||
| 10 | Working stable speed Minimum stable speed | r/min | 240 | |||||
| 11 | Average piston speed Mean piston speed | m/s | 9 | |||||
| 12 | Average effective pressure Mean effective pressure | MPa | 2.3344 | 2.2651 | 2.1219 | 1.98 | 1.8678 | 1.6992 |
| 13 | Supercharge pressure Supercharged pressure | MPa | 0.43±0.01 | 0.42±0.01 | 0.40±0.01 | 0.38±0.01 | 0.36±0.01 | 0.34±0.01 |
| 14 | Explosion pressure Maximum exploration pressure | MPa | ≤17.0 | |||||
| 15 | Exhaust temperature of each cylinder Each cylinder exhaust temperature | ℃ | ≤450 | |||||
| 16 | Turbine front row temperature Exhaust temperature before turbocharger | ℃ | ≤600 | |||||
| 17 | Fuel consumption rate Fuel oil consumption | g/kw. h | 190+5% | |||||
| 18 | Oil consumption rate Lubrication oil consumption | g/kw. h | 1.0 | |||||
| 19 | Crank arrangement Crank arrangement | / | 1.8 4.5 + 3.6 2.7 | |||||
| 20 | Fire order Fire order | / | 1-4-7-6-8-5-2-3 | |||||
| 21 | Starting method Starting method | / | Compressed air start Compressed air starting motor | |||||
| 22 | Oil supply timing Fuel injection timing | ℃ A | 10~13.5 | |||||
| 23 | Starting air pressure | MPa | Starting pressure Max. starting pressure: 2.94MPa, starting pressure Min. starting air: 1.1MPa | |||||
| 24 | Natural gas working pressure | MPa | 0.51 | 0.5 | 0.48 | 0.46 | 0.440.42 | |
| 25 | Substitution rate Maximum substitution rate | % | 90 | |||||
| 26 | Dimensions (L×W×H) | mm | 6598.7×2655×4141 | |||||
| 27 | Piston lift height The lifting height of pinston | mm | 3323 | |||||
| 28 | Cylinder lifting height The lifting height of cylinder liner | mm | 3798 | |||||
| 29 | The quality of the whole machine Weight | kg | About 47000 | |||||
Zibo Chai N350/S dual-fuel engine is a medium-speed inline four-stroke high-power LNG/diesel dual-fuel engine; with the increasing strictness of emission regulations and the increasing shortage of oil and energy, energy conservation and low carbon have become the dominant direction of the development of internal combustion engine technology. Liquefied natural gas (LNG) has the characteristics of high energy density and low emissions (which can effectively reduce NOx emissions), which is of great practical significance to promoting my country's industrial transformation and upgrading and national energy structure adjustment.
Based on the N350 diesel engine, the N350/S dual-fuel engine has added a natural gas intake system and control system, mainly including natural gas intake pipes, electronic control units (ECUs), sensors, etc. ·N350/S dual-fuel engine does not change the various systems that the N350 diesel engine has, and is highly reliable.
The control logic of N350/S dual fuel engine mainly includes natural gas injection control, load control, speed regulation control, security control, etc. The N350/S dual-fuel engine forms a MAP diagram covering the entire engine operating conditions through control programming and data collection of crankshaft speed sensor, cam speed sensor, oil pressure, fuel temperature, charge air temperature, gas temperature, gas pressure, speed controller actuator throttle position and other data collection, thereby achieving free switching between dual-fuel modes and fuel modes and stable operation of dual-fuel engines.
The gas intake pipeline to the gas injection valve adopts a double-walled pipe structure. ·Using reasonable control logic, automatic conversion of dual-fuel engine mode can be realized to ensure full load operation in pure diesel mode in the absence of gas. The explosion-proof door is installed on the intercooling pipe, facing the charging air pressure stabilization chamber. It can quickly release the gas backfire and explosion energy, thereby protecting the engine air intake system from damage.
6N350ZLC/S series dual fuel engine technical specifications and parameters table
| Serial number No | name Name | Unit | Technical Specifications Technical specifications | |||||
| 1 | Type Type | / | Inline, four strokes, direct injection, turbocharged, irreversible In-line, four strokes, direct injection, turbocharger, irreversible | |||||
| 2 | model Model | / | 6N350ZLC/S-3 | 6N350ZLC/S-4 | 6N350ZLC/S-5 | 6N350ZLC/S-6 | 6N350ZLC/S-7 | 6N350ZLC/S-8 |
| 3 | Continuous power Rated power | kW/PS | 3032/4125 | 2942/4000 | 2756/3750 | 2574/3500 | 2426/3300 | 2207/3000 |
| 4 | Continuous speed Rated speed | r/min | 600 | |||||
| 5 | Cylinder diameter Cylinder bore | mm | 350 | |||||
| 6 | Piston stroke Piston stroke | mm | 450 | |||||
| 7 | Compression ratio Compression ratio | / | 6 | |||||
| 8 | Number of cylinders No. of cylinders | / | 259.77 | |||||
| 9 | Total displacement Total displacement | L | 14 | |||||
| 10 | Working stable speed Minimum stable speed | r/min | 240 | |||||
| 11 | Average piston speed Mean piston speed | m/s | 9 | |||||
| 12 | Average effective pressure Mean effective pressure | MPa | 2.3344 | 2.2651 | 2.1219 | 1.98 | 1.8678 | 1.6992 |
| 13 | Supercharge pressure Supercharged pressure | MPa | 0.43±0.01 | 0.42±0.01 | 0.40±0.01 | 0.38±0.01 | 0.36±0.01 | 0.34±0.01 |
| 14 | Explosion pressure Maximum exploration pressure | MPa | ≤ 17.0 | |||||
| 15 | Exhaust temperature of each cylinder Each cylinder exhaust temperature | ℃ | ≤450 | |||||
| 16 | Turbine front row temperature Exhaust temperature before turbocharger | ℃ | ≤600 | |||||
| 17 | Fuel consumption rate Fuel oil consumption | g/kw. h | 190+5% | |||||
| 18 | Oil consumption rate Lubrication oil consumption | g/kw. h | 1.0 | |||||
| 19 | Crank arrangement Crank arrangement | / | 1.6 2.5 3.4 | |||||
| 20 | Fire order Fire order | / | 1-2-4-6-5-3 | |||||
| 21 | Starting method Starting method | / | Compressed air start Compressed air starting motor | |||||
| 22 | Oil supply timing Fuel injection timing | ℃ A | 10 to 13.5 | |||||
| 23 | Starting air pressure | MPa | Starting pressure Max. starting pressure: 2.94MPa, starting pressure Min. starting air: 1.1MPa | |||||
| 24 | Natural gas working pressure | MPa | 0.51 | 0.5 | 0.48 | 0.46 | 0.44 | 0.42 |
| 25 | Substitution rate Maximum substitution rate | % | 90 | |||||
| 26 | Dimensions (L×W×H) | mm | 5598.7×1848.5×3624 | |||||
| 27 | Piston lift height The lifting height of pinston | mm | 3323 | |||||
| 28 | Cylinder lifting height The lifting height of cylinder liner | mm | 3798 | |||||
| 29 | The quality of the whole machine Weight | kg | About 37500 | |||||
8N350ZLC/S series dual fuel engine technical specifications and parameters table
| Serial number No | name Name | Unit | Technical Specifications Technical specifications | |||||
| 1 | Type Type | / | Inline, four strokes, direct injection, turbocharged, irreversible In-line, four strokes, direct injection, turbocharger, irreversible | |||||
| 2 | model Model | / | 8N350ZLC/S-4 | 8N350ZLC/S-5 | 8N350ZLC/S-6 | 8N350ZLC/S-7 | 8N350ZLC/S-8 | 8N350ZLC/S-9 |
| 3 | Continuous power Rated power | kW/PS | 4043/5500 | 3822/5200 | 3675/5000 | 3455/4700 | 3310/4500 | 2942/4000 |
| 4 | Continuous speed Rated speed | r/min | 600 | |||||
| 5 | Cylinder diameter Cylinder bore | mm | 350 | |||||
| 6 | Piston stroke Piston stroke | mm | 450 | |||||
| 7 | Compression ratio Compression ratio | / | 6 | |||||
| 8 | Number of cylinders No. of cylinders | / | 346.36 | |||||
| 9 | Total displacement Total displacement | L | 14 | |||||
| 10 | Working stable speed Minimum stable speed | r/min | 240 | |||||
| 11 | Average piston speed Mean piston speed | m/s | 9 | |||||
| 12 | Average effective pressure Mean effective pressure | MPa | 2.3344 | 2.2651 | 2.1219 | 1.98 | 1.8678 | 1.6992 |
| 13 | Supercharge pressure Supercharged pressure | MPa | 0.43±0.01 | 0.42±0.01 | 0.40±0.01 | 0.38±0.01 | 0.36±0.01 | 0.34±0.01 |
| 14 | Explosion pressure Maximum exploration pressure | MPa | ≤17.0 | |||||
| 15 | Exhaust temperature of each cylinder Each cylinder exhaust temperature | ℃ | ≤450 | |||||
| 16 | Turbine front row temperature Exhaust temperature before turbocharger | ℃ | ≤600 | |||||
| 17 | Fuel consumption rate Fuel oil consumption | g/kw. h | 190+5% | |||||
| 18 | Oil consumption rate Lubrication oil consumption | g/kw. h | 1.0 | |||||
| 19 | Crank arrangement Crank arrangement | / | 1.8 4.5 + 3.6 2.7 | |||||
| 20 | Fire order Fire order | / | 1-4-7-6-8-5-2-3 | |||||
| 21 | Starting method Starting method | / | Compressed air start Compressed air starting motor | |||||
| 22 | Oil supply timing Fuel injection timing | ℃ A | 10~13.5 | |||||
| 23 | Starting air pressure | MPa | Starting pressure Max. starting pressure: 2.94MPa, starting pressure Min. starting air: 1.1MPa | |||||
| 24 | Natural gas working pressure | MPa | 0.51 | 0.5 | 0.48 | 0.46 | 0.440.42 | |
| 25 | Substitution rate Maximum substitution rate | % | 90 | |||||
| 26 | Dimensions (L×W×H) | mm | 6598.7×2655×4141 | |||||
| 27 | Piston lift height The lifting height of pinston | mm | 3323 | |||||
| 28 | Cylinder lifting height The lifting height of cylinder liner | mm | 3798 | |||||
| 29 | The quality of the whole machine Weight | kg | About 47000 | |||||
