By Alice | 12 February 2022 | 0 Comments

Weichai marine engine WP12 with power 350-550hp


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 [email protected], [email protected], [email protected]
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  [email protected], [email protected], [email protected], [email protected], [email protected]
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 topicMechanical 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  mmφ200
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%.
 

  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.

1, Power Output System

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

2, Electrical system

Alternator Type —— With
Electric starter Type Pre-engagement With
Air starter Type —— Without
Air bottle Capacitym3 —— Without
Minimum Number of Starting Motors ——
Working PressureMPa ——
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;
Alarm Limits Alarm when outlet water temperature ≥97℃  alarm
Speed ≥115%  alarm
≥120%  parking
Oil temperature ≥105℃  alarm
Oil press ≤120KPa  alarm
≤80KPa  parking

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