Weichai marine engine WP12 series famous as its smaller size and fuel-saving design, it can up to 191g.kw/h, displacement can be 11.59L, oil consumption is ≤0.5g/kW.h, and this series engine can be divided into two kinds of engines: mechanical type and common rail type：
Weichai marine engine WP12 series mechanical injection pump:
With power 350hp@1500rpm, 400hp@1800rpm, 450hp@2100rpm
The mechanical type size is a little larger than the common rail type volume, emission is IMOII.
Weichai marine engine WP12 series common rail injection pump:
With power 350hp@2100rpm, 400hp@2100rpm, 450hp@2100rpm, 500hp@2100rpm, 550hp@2100rpm
The common rail type size is a little smaller than the mechanical type volume, emission is also IMOII.
So now the question is coming?
Which is better for the mechanical and common rail marine engine? Please stay with us for the next blog topic”Mechanical marine engine is better or common rail marine engine is better? ”
The details parameters as:
| NO | Project | Parameters |
| 1 | Model | Weichai WP12 series marine engine |
| 2 | Order number | --- |
| 3 | Cylinder type | in line,turbocharged and Intercooled, high pressure common rail |
| 4 | Cylinder diameter (mm) | 126 |
| 5 | Piston stroke (mm) | 155 |
| 6 | Number of cylinders | 6 |
| 7 | Displacement (L) | 11.6 |
| 8 | Firing sequence | 1-5-3-6-2-4 |
| 9 | Rotation direction (facing flywheel) | counterclockwise |
| 10 | Rated power / speed (kW / R / min) |
368/2100 |
| 11 | Overload power / speed (kW / R / min) | 405/2167 |
| 12 | Minimum no-load stable speed (R / min) | 650 |
| 13 | Rated fuel consumption rate (g / (kW. H)) | 215 |
| 14 | Oil consumption rate under rated condition (g / (kW. H)) | ≤0.66 |
| 15 | Diesel engine net weight (kg) | 1200 |
| 16 | Overall dimension (L × w × h) mm | 1695×840×1280mm |
| 17 | Flywheel 14# | Flywheel coupling ring (thickness) 46.7 |
| Connection stop size mm φ466.72 | ||
| Connecting bolt hole distribution circle dimension mm φ438.15 | ||
| Distance from stop to front of flywheel housing mm 25.4 | ||
| Flywheel SAE 1 | SAE1 Flywheel Housing Connecting Ring (Thickness)------ | |
| Connection stop size mm φ511.18 | ||
| Connecting bolt hole distribution circle dimension mm φ530.22 | ||
| 18 | Pulley | Number of grooves/groove type 5B |
| Diameter of groove pitch circle （mm）φ200 | ||
| Remarks： 1)The power tolerance under rated working condition is 2%; 2)The low calorific value of fuel is 42700kj / kg, and the allowable deviation of fuel consumption rate is + 5%; 3)The allowable deviation of oil consumption rate is + 20%. |
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High press common rail type engine.
Landking compact size.
double layer high press explosion proof oil pipe.
Water cooled exhaust.
Non-stop exchange fuel filter and oil filter.
heat exchanger inside materials is bronze ERCuNi.
| Free wheel | Standard No. | 14# | Flywheel coupling ring (thickness) | 46.7 |
| Connection stop size mm | φ466.72 | |||
| Connecting bolt hole distribution circle dimension mm | φ438.15 | |||
| Distance from stop to front of flywheel housing mm | 25.4 | |||
| —— | Flywheel coupling ring (thickness) | —— | ||
| Connection stop size mm | —— | |||
| Distance from stop to front of flywheel housing mm | —— | |||
| Connecting bolt hole distribution circle dimension mm | —— | |||
| Flywheel ring gear | Number of teeth | 136 | ||
| Output connection mode | High elasticity | —— | ||
| Flywheel housing | Standard number | SAE1# | SAE1 Flywheel Housing Connecting Ring (Thickness) | —— |
| Connection stop size mm | φ511.18 | |||
| Connecting bolt hole distribution circle dimension mm | φ530.22 | |||
| Pulley | Number of grooves/groove type | 5B | ||
| Diameter of groove pitch circle （mm） | φ200 | |||
| Alternator | Type | —— | With | ||
| Electric starter | Type | Pre-engagement | With | ||
| Air starter | Type | —— | Without | ||
| Air bottle | Capacity（m3） | —— | Without | ||
| Minimum Number of Starting Motors | —— | ||||
| Working Pressure（MPa） | —— | ||||
| Number | —— | ||||
| Parking device | Parking solenoid | Without | |||
| Oil shutdown solenoid valve | Without | ||||
| Side Instruments | Display type | digital display | With | ||
| Rated voltage | 24V（<18V or >32V alarm） | ||||
| function | Display parameters: oil pressure, oil temperature, water temperature, speed, voltage; Alarm parameters: low oil pressure, high oil temperature, high water temperature and high speed; Stop parameters: low oil pressure and high speed; |
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| Alarm Limits | Alarm when outlet water temperature | ≥97℃ alarm | |||
| Speed | ≥115% alarm ≥120% parking |
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| Oil temperature | ≥105℃ alarm | ||||
| Oil press | ≤120KPa alarm ≤80KPa parking |
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