Paxman VP185High Speed Engine Paxman or a viscous the fuel injection equipment. second ring groove. the engine’s components to nitrided for maximum Camshaft & Valve Train provide a self contained strength and long wear life. the cylinder head at the liner flange. Each liner has a camfollower. In the lower portion rods are fully machined to graphite iron and have an light weight and compact of the crankcase the give strength and weight internal configuration that design to meet the needs underslung crankshaft is consistency between ensures maximum flame of marine. need to remove the engine the efficiency of cylinder where weight and space Generously sized crankcase from its mounts. They are world-wide. After face stiffness and high and off-road applications caps which are double cross machining they are ferritic cooling efficiency. are at a premium and high doors are provided to give Each cylinder head carries power output is essential. In end is obliquely split to allow can be removed for The top of the range addition the vertical main the rod to pass through the maintenance without 18VP185 produces powers bearing studs are liner for assembly and disturbing adjacent heads. The 90° vee high reliability and the design manufactured from generous overlap between engine configuration allows customer has a package spheroidal graphite iron. so eliminating the need marine propulsion. push rod and top flange which sits on the rocker lever feature flat top deck of the maximised stiffness crankcase. routine service and supports the remainder of machined steel forging. bolted to the deep side nitro-carburised. long periods Piston & Liner every throw to reduce the provides the actuation for all between overhauls. and a centrally for ease of maintenance situ servicing. fitted to Large base circle cams feed is via accurately aligned the free end and totally coupled to high rates of lift standing jets mounted in the enclosed within the free end give the essential crankcase. This permits rod The air and exhaust ports at a speed of 1950 r/min. crankpin and main bearing the camshaft gear to mesh ideal for all aspects of Piston cooling is achieved journal provides a high directly with the crankshaft power generation and using a lubricating oil cooled degree of stiffness. valves. characteristics for good in wet liners made of combustion and low centrifugally cast high grade emission levels.Paxman VP185 General Description Crankcase Connecting Rods Cylinder Heads The VP185 range of 12 and This is cast in high strength Side by side connecting The cylinder heads are 18 cylinder high speed spheroidal graphite iron. The oil damper (12VP185). low out of balance caused by valves and unit pump exhaust emissions and The piston is a monoblock the connecting rods. up to 4000 kWb (5365 bhp) hydraulically tensioned and overhaul. the entire arrangement and piston removal from the have been optimised The 18VP185 is perfectly provides a strong and stiff top of the engine without the aerodynamically to maximise suited for installations core for the engine. Add to this the low fuel power unit. Counterbalance weights are A single camshaft located in and lubricating oil bolted to the crankshaft on the centre of the engine vee consumption. The injectors. and rods are made from high. damping is by means of for an idler gear and behind the compression ring either a tuned damper providing a very stiff drive to groove and much of the (18VP185). Torsional gear. The liner is held consistent with minimised between the crankcase and associated mass. charging and scavenging. gallery under the crown. access to the connecting Crankshaft two inlet and two exhaust The simple design allows rods and crankshaft for in. industrial. The lower support for the liner is arranged to be high in the crankcase and incorporates two ‘O’ ring seals and a large ‘wedge’ ring. The strength compacted high power output with a design. manufactured from high diesel engines combine is a robust and light weight strength forged steel. The crankcase The crankshaft is a fully located unit pump injector. gas inspection. . The large mounted individually and faces of the casting. The cast iron. rail supported by main bearing individual rods. The pistons run casing. For the 12 VP185 customer’s special compressors and is relayed twin element filters are requirements. The standard for marine two-stage turbocharging air is then taken to the high applications. The turbochargers are of cartridge type and may be readily replaced when required. The total sump design with a gear flexibility in system design is through. the oil pump. The VP185 has a passive to the air intercooler(s). turbochargers and all Lubricating Oil System power unit and avoiding the exhaust ductwork are use of connections to off The fuel lift pump is contained within the water The engine is of the wet engine equipment. The oil feed and drain lie within the turbocharger housing. construction to the heat The crankshaft gear cooled gas tight casings. and for the turbine side of the providing a complete engine governor actuator. a thermostat. The industrial Gear Train system with intercooling and pressure compressors.Exhaust System & Incoming charge air passes driven externally accessible however available to suit Turbocharging through the low pressure oil pump. . an important safety feature. On the 18VP185 a ground gears located in a the engine’s central theme of split circuit construction. casing at the free end of manifold temperature at part The oil is cooled by a plate the engine. is designed to maintain air standard on all applications. Some mounted on. The turbochargers are arranged in groups of three comprising one high pressure and two low pressure machines. The arranged if required. mounted on engine pumps. Exhaust gas from the engine is relayed to the high pressure turbines. the temperature meshes directly with the The turbochargers are Air filter panels are on-engine being controlled by a bypass camshaft gear. turbochargers and housings gives the engine a gas tight system with cool exposed surfaces. Additional mounted directly into the mounted. All of the exhaust manifolds load and prevent ignition type oil cooler similar in are contained in water delay. and triple element filter is fitted as lightweight cast aluminium simplicity and reliability. Alternatively. For most drives are arranged for the side wall of water cooled ducted air intake may be applications the oil cooler is gear driven oil and coolant turbocharger housings. exchanger. arrangement of manifolds. avoiding the need for external pipework. and driven cooled housing. The off-engine mounted Duplex carburise hardened and needed thereby maintaining air aftercooler is of passive system. No valves or through the air aftercooler either a Simplex filter or an The gear train comprises electronic controls are and on to the engine. The exhaust from each high pressure turbine splits and drives two low pressure turbines before passing to the engine exhaust outlet. engine may be offered with aftercooling. 20 tonnes (dry) 14 Power 12VP185 up to 2610 kWb (@1950 r/min) 18VP185 up to 4000 kWb Dimensions 12VP185 2175/2971/1660mm (H/L/W) 18VP185 2178/3798/1450mm .Paxman VP185 Key to Main Components 1 Oil Filter(s) 2 High Pressure Turbochargers 3 Low Pressure Turbochargers 4 Aftercooler 5 Overspeed Air Shutdown Valve 2 6 Exhaust Manifold 7 Charge Air Inlet Manifold 8 Cylinder Head 9 Crankcase Pressure Relief Valve 10 Access Doors 11 Camshaft 12 Intercoolers (x3) 1 13 Coolant Pump 14 Lub Oil Pump and Fuel Lift Pump 15 Oil Cooler/Heat Exchanger 12 11 15 13 Key Data Weight 12VP185 7.87 tonnes (dry) 18VP185 10. 4 3 3 2 5 6 8 7 Design Features 9 ■ Simple. compact and robust ■ All major ancillaries engine-mounted ■ Low radiant heat ■ High power to weight ratio ■ 2-stage turbocharging ■ Automotive-type turbochargers Environmental ■ Low Nox emissions ■ Low lub oil consumption ■ Unit injectors improve combustion In Service ■ Over 360.000* operational hours ■ Long service intervals ■ Short service down times: – Individually mounted cylinder heads – Pistons removable through liners ■ Comprehensive service and spares support *At July 2000 . uncomplicated and user- 10 friendly: low component count ■ Lightweight. on the application. coupled with a mounted gear driven are fitted as standard with Alarm and shutdown high injection rate gives centrifugal pumps. All system can be supplied injector avoids the use of specialised arrangements governing systems can be which is capable of any exposed high pressure can be tailored to suit the integrated into larger communicating with any pipes and joints. which cut A combined fuel pump and the key to achieving a control of the engine off the charge air supply to injector. As functions can be tailored to good combustion two basic cooling an option industrial engines suit individual requirements. fitted on marine applications. In general the option of load share. This system pump injector offers a and inlet air temperature in other control functions. system as desired. the fuel racks. The industrial applications and applications where the with an associated high rate primary and secondary marine generators the charge air contains of pressure rise. The unit injectors Heat Exchanger located in the centre of the details can be supplied on are rack controlled via a vee at the free end of the request. known as a unit sufficiently low lubricating oil coupled with a range of the cylinders. but also by alteration without notice. The unit industrial. specifications via the fuel filters to the unit 2231 actuator with the effected not only by closing and performance data are subject to injectors from a gear driven option of ball head back-up. and this is a particular requirements of distributed control schemes. DCS or central distinct safety feature the application. linkage operated by the A single plate type oil engine. As the inherent in the VP185 The governor actuator is range is so vast further design. Low Viking 2200 governor and We reserve the right to make any pressure fuel oil is delivered the Regulateurs Europa Shutdown on overspeed is changes in design considered necessary and therefore dimensions. and provides hot water to keep the engine warm which helps to maintain steady combustion. although Heinzmann governors. The actuator is controlled by Fuel Filters Its close proximity to the the off engine electronic respective pumps minimises control system. can alternatively be fitted A comprehensive data emissions and low fuel designated marine and with Regulateurs Europa or collection and monitoring consumption. form part of any contractual commitment. For will protect the engine in minimum trapped volume hot environments. 2178mm The primary circuit runs at relatively high temperatures and is based on the engine housing water circuit. duplex fuel filters in a The engine is fitted with position which affords easy Governing alarm and shutdown access for maintenance switches which operate in staff. Cooling Circuit The cooling system is divided into two circuits designated primary and secondary. In standard form the marine pipe runs and allows the propulsion and auxiliary engine to be supplied as a Engine Protection engines are fitted with finished power unit. ship control. The industrial engine The standard marine engine the event of low lubricating has an option of either is supplied with the oil pressure and engine The information contained in this publication is typical only and does not simplex or duplex depending Regulateurs Europa digital overspeed. characteristics with low arrangements are offered. The coolant is circulated around Woodward UG8 actuator combustible gasses. and is gear driven engine mounted actuator. maximum injection pressure the engine by engine and 2301A speed controller of 1400 bar. cooler/heat exchanger unit is via the engine camshaft.Paxman VP185 Fuel Injection System The secondary circuit runs at The system offers a high governor independent air a lower temperature and is response rate and close shutdown valves. 3798mm . fuel lift pump. hk Modi Mirrlees Blackstone E-73.ca MAN B&W Diesel (Houston) Inc 10801 Kempwood Drive. Texas 77043 USA Telephone: +1 713 939 0073 Fax: +1 713 939 0105 E-mail: [email protected] MAN B&W Diesel S. Paxman Hythe Hill.com.E. Hong Kong Telephone: +852 2529 3696 Fax: +852 2865 2838 E-mail: diesel@manbw. Suite One. Oakville. NSW 2073 Australia Telephone: +61 29 488 4912 Fax: +61 29 488 4920 E-mail: info@manbw. Essex.au MAN B&W Diesel Canada Ltd 355 Wyecroft Road.com. Asia Pte Ltd 140 Gul Circle.singnet.com Paxman . Pymble. Ontario.com. Houston. Hopewell Centre. Wanchai. L6K 2H2 Canada Telephone: +1 905 842 2020 Toll free: 1 877 905 2020 Fax: +1 905 842 2025 E-mail: info@manbw. 183 Queen’s Road East.Paxman VP185 High Speed Engine Mk1 09/2000 MAN B&W Diesel Ltd.com MAN B&W Diesel Australia Pty Ltd 3. Colchester. Aurangabad 431 136 India Tel: +91 240 554 463 Fax: +91 240 554 621 www.manbwltd.sg MAN B&W Ltd. Hong Kong Room 3303-04. Jurong. Midc Waluj. CO1 2HW England Telephone: +44 1206 795 151 Fax: +44 1206 797 869 E-mail: paxman@manbwltd. Bridge Street. 629601 Singapore Telephone: +65 861 1580 Fax: +65 862 4427 E-mail: manbwsea@mbox3.