M33NG Series · 19.6 L · China marine Stage II emissionIMOTierⅡ
M33NG Series Marine Gas Engine
Models: 6M33C612-18E221NG · 6M33C550-18E221NG · 6M33C500-18E221NG · 6M33C571-15E220NG · 6M33C500-15E220NG · 6M33C450-15E220NG
Fuel type: LNG
330-450
Power range (kW)
1500-1800
Speed range (r/min)
Product Advantages
- Safe and reliable. Inherently-safe design concept, double-wall piping structure design.
- 1000h endurance test assessment.
- Strong power. 20% torque reserve.
- Maximum torque output maintained at 70%-100% of rated speed, wide high-torque speed range.
- Economical and eco-friendly. Optimized design of dedicated parts, simulation-optimized intake port and combustion chamber shape, uniform intake air control, optimized turbocharger matching.
- Mature control system, lean-burn, closed-loop oxygen control.
- Highly practical. Mature structure, high maintainability.
- Small maintenance workload, short time spent.
- Intelligent instruments, online monitoring.
Specifications
| Engine type | four-stroke, water-cooled, inline, turbocharged and intercooled |
| Bore / stroke (mm) | 150×185 |
| Number of cylinders | 6 |
| Displacement (L) | 19.6 |
| Torque reserve (%) | |
| Oil consumption rate (g/kW·h) | ≤0.5 |
| Minimum fuel consumption rate (g/kW·h) | 194 |
| Idle speed (r/min) | 650±30 |
| Noise (dB(A)) | ≤116 |
| Crankshaft rotation direction | counter-clockwise (viewed from the free end) |
| Overall dimensions (L×W×H) (mm) | 1915×1140×1550 |
| Net weight (kg) | 2390 |
Note: product parameters and images are for reference only and are subject to change without notice.
Model Line-up
| Series | Model | Power (kW / Ps) | Speed (rpm) | Technology route | Emission level | Power rating |
|---|---|---|---|---|---|---|
| M33NG | 6M33C612-18E221NG | 450/612 | 1800 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
| M33NG | 6M33C550-18E221NG | 405/550 | 1800 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
| M33NG | 6M33C500-18E221NG | 368/500 | 1800 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
| M33NG | 6M33C571-15E220NG | 420/571 | 1500 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
| M33NG | 6M33C500-15E220NG | 368/500 | 1500 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
| M33NG | 6M33C450-15E220NG | 330/450 | 1500 | single-point injection, spark ignition | China marine Stage II emissionIMOTierⅡ | P1 |
Request a Quote
Send the model designation (for example 6M33C612-18E221NG), the required quantity and your destination port.
At a glance
As an original Weichai diesel engine supplier, we supply the M33NG Marine Gas built as a four-stroke, water-cooled, inline, turbocharged and intercooled unit, with 19.6 L displacement. Rated output spans 330–450 kW. It is supplied to meet China marine Stage II emissionIMOTierⅡ emission requirements.
Technical details
The Weichai M33NG Marine Gas is built on a four-stroke, water-cooled, inline, turbocharged and intercooled configuration with 6 cylinders architecture. Displacement is 19.6 L. It is offered for 194 operation. For installation planning, the unit has a dry weight of 2390 kg and an idle speed of 650±30 r/min.
Typical applications
The Weichai M33NG Marine Gas is specified for duty. Confirmed applications include the following, and we can advise on suitability for your machine:
- Fuel type: LNG
M33NG Marine Gas frequently asked questions
What is the power range of the Weichai M33NG Marine Gas?
The M33NG Marine Gas covers 330–450 kW. Confirm the exact sub-model code before ordering, because output varies across the model line-up.
Which emission standard does the M33NG Marine Gas meet?
This unit is offered to China marine Stage II emissionIMOTierⅡ. Tell us your destination market and we will confirm the certification route before shipment.
Is the M33NG Marine Gas a genuine Weichai engine?
Yes. Units are sourced through controlled supply channels to original factory specification and are supplied with export packing and documentation.
How is the M33NG Marine Gas shipped and how long does delivery take?
Engines are crated for export and consolidated at the port. Send your model designation, quantity and destination port for a firm quotation and lead time.
What is the configuration of the M33NG Marine Gas?
The M33NG Marine Gas is built on a four-stroke, water-cooled, inline, turbocharged and intercooled, 6 cylinders, 19.6 L of displacement layout. Send us your machine model if you need confirmation that this layout fits your installation.