SECTION 1 : EXECUTIVE SUMMARY

 

This proposal describes the supply of 2 off MAN B&W Diesel Ltd, 18VP185 industrial generator drive engines for FG Wilsons, BBC Phase 2 Project

 

The 18VP185 is the most recent development of the VP185 engine range and incorporates state of the art technology with proven reliability.  There are over 295 VP185 engines in service or on order, examples having run 24,000 hours of operation to major overhaul.  The VP185 has amassed over 1,000,000 hours experience, including a high proportion of operational hours at low power and/or idling and offers the following major benefits :-

 

High availability (typically in excess of 95%).

Low fuel consumption.

High output power at 1500 and 1800 rpm.

Highly competitive through life costs.

 

Customer support is a major concern for engine operators and the VP185 package is supported by a comprehensive worldwide service network.  This enables MAN B&W Diesel Ltd to provide our customers with support 24 hours, 365 days a year in many regions of the world.

 

In addition to representing excellent capital value, the VP185 offers competitive fuel consumption and through life costing.  If required this can be supplied based upon the engines expected operating profile.

 

SECTION 2 : PERFORMANCE SPECIFICATION

 

Engine Data

 

MAN B&W Diesel Ltd 18VP185:

 

No. of Cylinders	18
Configuration	90° Vee
Operating Cycle	4 Stroke
Bore	185 mm
Stroke	196 mm
Swept Volume per cylinder	5.27 litres
Compression Ratio	13.1:1
Combustion System	Direct Injection
Charge Air System	2 stage intercooled and aftercooled
Rotation (looking on flywheel)	Anti-clockwise
Thread System	SI Metric and BSP
Approximate Engine Dimensions :
Length	3,999 mm
Width	1,490 mm
Height	2,245 mm
Dry Weight	10,210 kg
Sump Capacity Min/Max	328/388 litres
Primary Coolant Capacity	300 litres
Secondary Coolant Capacity	125 litres

 

 

This offer is for a 18VP185 running at a constant speed of 1500rpm, at site conditions of :

 

Air Intake temperature               Max      40 ºC

Altitude                                                Sea Level

Secondary water return temperature      60 ºC

Voltage for Auxiliaries                          380 / 440 Volts, 3 phase at 50 / 60 Hz.

 

 

SITE POWER OUTPUT

 

Based on the above site conditions the rating for the engines offered would be:

 

Continous Power Output (COP):          3250 kWb + 10% Overload for 1 hour in 12

 

 

 

 

NOISE SPECIFICATION

 

A typical noise spectrum for the basic engine can be provided if required.

 

 

STARTING TIMES & LOAD ACCEPTANCE

 

Start times and load acceptance capabilities are dependent on the inertia of the alternator.

Typically based on an alternator inertia of 140 kgm², the engine would be firing and accelerating after 5 seconds and at rated speed after 12 – 15 seconds.

 

Note: this is based on the assumption that engine is conditioned i.e. engine jacket water heaters are on and up to temperature (45°) and oil is primed.

 

Once the engine has reached synchronous speed the engine can be loaded in stages.

 

Based on a typical alternator inertia of 140 kgm², the engine will accept a 40% load step (from zero).

 

 

SECTION 3 : PRICE SCHEDULE

 

PROJECT PRICE SCHEDULE AND OPTIONS (Per Engine)

 

18VP185 Industrial diesel engine                                                                                            

• Triplex Lub Oil Filter

• Crankcase breather stub pipe without flexible pipe
• Simplex fuel oil filter (standard)
• Electrically operated shutdown flaps (standard)
• Standard crankcase doors

• Electric LO priming pump

 

 

The following additional options are included in the total contract price:

• Air Driven starter motor with regulating valves                                                                   
• Additional air start motor (fitted) with regulating valve                                                        
• Primary water heater module                                                                                            
• Air valve lubricating oil system (AVLOS)                                                               
• Set of exhaust flexible bellows and joints                                                             
• 3 into 1 exhaust adaptor                                                                                      
• Standard aluminium panel type air filter                                                                 
• Woodward with load share in lieu of standard Woodward system                                      
• Set of temperature/pressure transducers                                                               
• Single exhaust thermocouple                                                                                           
• Flexible coupling                                                                                                 

Manual barring gear                                                                                                   

 

SECTION 4 : 18VP185 SCOPE OF SUPPLY

 

ITEM 4.1          INDUSTRIAL 18VP185 ENGINE EQUIPMENT

 

Note:  Unless otherwise stated, items are to standard MAN B&W Diesel Ltd specifications.

 

All auxiliary items are rated at 380 / 440 Volts, 3 phase at 50 / 60 Hz.

 

 

4.1.1     BASE ENGINE

 

Flywheel

 

Engine flywheel SAE21 with starter ring.

Engine flywheel housing SAE “00”.

Barring gear to manually turn the engine to facilitate maintenance.

 

Engine Mounting

 

One set of engine feet.

 

Torsional Vibration

 

Torsional vibration damper fitted at the crankshaft free end.

 

 

4.1.2     STARTING SYSTEM

 

Pneumatic Starting Systems

 

Two turbine type Air start motor 1 x 10 bar with governor boost unit (Duty & Standby).

Air pressure reducing valves supplied loose allowing the stored air pressure (max 40 Bar) to be reduced to the correct working level.  Complete with safety and shut off valves.

 

STARTING AIDS

 

Primary Water Pre Heating

 

Primary water heater unit rated at 9 kWe.  Includes heating elements and circulating pump mounted on frame and wired.

 

Lub Oil Pre Heating

 

Lub Oil preheating not included.

 

 

4.1.3     COOLING SYSTEM

 

PRIMARY CIRCUIT (FRESH WATER)

 

Fresh water coolant is circulated through the crankcase jacket, cylinder heads, turbocharger and exhaust housings and the high pressure charge air aftercooler by a free end mounted gear driven circulating pump.  The system is fitted with a thermostatic valve for temperature control.  Primary circuit coolant header tank by others.

 

 

 

 

SECONDARY CIRCUIT

 

Secondary water is circulated through an engine mounted plate type lubricating oil cooler, high pressure charge air aftercooler and the three low pressure charge air intercoolers by a gear driven pump mounted at the free end of the engine.  Thermostatic valve.  Secondary circuit coolant header tank by others.

 

 

4.1.4     LUB OIL SYSTEM

 

Wet sump

Externally mounted gear type pump

Pressure relief valve

Lubricating oil thermostatic bypass control valve

Plate type lubricating oil cooler (secondary water cooled)

Filler and strainer

Dipstick

Triplex lub oil filter mounted on engine.

Crankcase breather stub pipe.

Air Valve Lubricating Oil System (AVLOS).

 

Mechanically driven lubrication pump to provide lubrication to valve rockers.  Fitted to engine.  Required for continuous operating power applications running for 1000 hours or more per year.

 

PRIMING PUMP & PIPING

 

Electric motor driven lub oil priming pump, off engine unwired suitable for continuous or intermittent priming.

Rated at 2.2 kW, complete with starter.  Flexible connections not included.

 

Pump control to be via start sequence logic in engine control panel.

 

 

4.1.5     FUEL OIL SYSTEM

 

Combined fuel pumps and injectors

Fuel reservoir

Fuel oil cut-off valve

Feed pump - suction lift 2000 mm from crankshaft centre line

Simplex Fuel Oil Filter.

 

 

4.1.6     EXHAUST SYSTEM

 

The exhaust system is of pulsed design, feeding a 2-stage turbocharging system with three exhaust outlets.  The exhaust system is enclosed in fresh water-cooled, gas tight casings.

 

Set of Flexible bellows and joints for connection between engine and exhaust ducting.

A “three into one” adapter for combining the three exhaust outlets into a single duct, complete with joints.