Table of Contents 2007 Engine Introduction Subject Page New 6-Cylinder Engines for 2007.3 New Engine Designations .4 N54 Overview.6 Technical Data N54 .8 PowerOutput Comparison (N52 to N54) .9 N52KP Overview.10 Technical Data (N52B30M1) .12 N51 Overview.13 Initial Print Date: 09/06 Revision Date: 2007 Engine Introduction Model: All with 6-Cylinderfor2007 Production: from 9/2006 ■MICTIWIS After completion of this module you will be able to • Describe the additions to the NG6 engine family • Understand the new engine designations 2 2007 Engine Introduction New 6-Cylinder Engines for 2007 Previously in 2005, BMW introduced the beginning of a new generation of six cylinder engines with the N52. Now, forthe 2007 model year, BMW has 3 new variations of the NG6 engine family. The first of the new engines is the N54, which will debut in the new 3-series coupe in September2006. The N54 is turbocharged and uses the second generation of direct injection (Dl 2). This engine will powerthe new 335i coupe in the fall of 2006. The N52 will eventually be replaced by the new N52KP. The N52 KP engine is an improved and cost optimized version of the N52. The N52 KP will be available in the 328i and xi coupe from September and will replace the N52 in various models. Finally, the N51 which is a SULEV II compatible engine, will be phased into selected production models from 9/06. The N51 features many of the same features of the previous SULEV engine (M56) including a "Zero Evap" system. 3 2007 Engine Introduction New Engine Designations A new engine numbering system has been introduced to to enable fast and distinct identification. The "TU" designation has been dropped together with the associated version numberwhich is now replaced by a simple count number at the end of the engine designation. The codes T through K are also new forthe various power stages instead of the previ¬ ous "OL" or "UL” designations. For example, the new N52KP engine which is a variant of the original N52 engine will now be known as the N52B30O1. This would be instead of the traditional "TU" suffix as in - N52B30TU. The block stamping (above) is located in the same place as the previous N52 engine. The chart on the opposing page shows the breakdown of the new engine designations. N52B30O1 7 6 5 4 3 2 1 4 2007 Engine Introduction Description BMW Engines up to 2001 BMW Engines from 2001 (New Generation) BMW M GmbH External Engines (i.e.Tritec MINI) 4-cylinder in-line engine 6-cylinder in-line engine 8-cylinder "V" engine 12-cylinder "V" engine 10-cylinder "V" engine Basic engine SULEV or PZEV Valve tronic Gasoline direct injection Gasoline direct injection with turbocharger Double VANOS with Valvetronic Diesel direct injection with turbocharger Gasoline Gas (natural) Hydrogen 2.5 liter (example) Upper output class (standard) Medium output class Lower output class Lowest output class New development Redesign/facelift version (TU etc.) 5 2007 Engine Introduction N54 Overview The first new member of the NG6 family is the N54 which will be initially available in the new 335i coupe (E92). The N54 continues the tradition of "efficient dynamics" by meet¬ ing the customer demand for high performance and the necessary requirements of low fuel consumption and emissions. The N54 is available as a 3.0 liter engine and features the following: • Exhaust driven turbocharger (Bi-turbo) • Airto air Intercooler • 2nd Generation Direct Injection (HPI) with piezo injectors • New engine management (MSD80) • Bi-VAN OS • All aluminum crankcase with iron cylinder liners (similar dimensions to N52) • External oil cooler • New high output electric water pump (400 W) • Aluminum cylinder head with plastic valve cover • Steel crankshaft 6 2007 Engine Introduction As perthe new engine designations, the N54 will be officially referred to as the N54B3000. The "0" designates the "upper" output range and the "O' indicates the first generation in this series. The N 54 features the new HPI injection system which is capable of pressures of to 200 bar. This system features the new "piezo" injectortechnology with "outward" opening injectors. Also, the N54 benefits from parallel bi-turbocharging with airto air intercoolers. Overall, the N54 provides the driver with uncompromising response and high torque output in a package that is up to 150 pounds lighterthan a V-8 engine. The new technology used in the N54, allows for maximum efficiency and the required low tailpipe emission figures to meet ULEV II guidelines. 7 2007 Engine Introduction Technical Data N54 Description Value Engine type Inline 6 cylinder Displacement (cm^) 2979 Stroke/bore (mm) 84/89.6 Cylinderspacing (mm) 91 Crankshaft main bearing diameter (mm) 65 Crankshaft rod journal diameter (mm) 50 Firing order 1-5-3-6-2-4 Power output(kw/bhp) @ RPM 225/300 @ 5800 RPM Torque (Nm) @RPM 400 @ 1300 - 5000 Maximum engine speed 7000 Power to weight ratio (kg/kW) 0.83 Power output per liter (kW/l) 75.5 Compression ratio 10.2 Valves/cyl 4 Inlet valve diameter (mm) 31.44 Exhaust valve diameter (mm) 28 Engine weight (kg) 187 Knock control Yes Engine management MSD80 Emission compliancy (US) ULEV2 Injection system type HPI (D1 2) 8 2007 Engine Introduction PowerOutputComparison (N52 to N54) Nm kW 240 220 200 180 160 140 120 100 80 60 40 20 0 1/min N54B3000 N52B3000 9 2007 Engine Introduction N52KP Overview The enhanced and improved version of the original N52 is referred to as the N52KP or more accurately the N52B30O1. This engine includes cost saving measures as well as various technical improvements. The N52KP will eventually replace the N52 in all vehicle applications. One of the first vehicles to use the N52KP will be the 328i coupe (E92) in September. The technical highlights of the N52KP include: • New engine management (MSV80) • New HFM (digital) • New throttle - EGAS8 with magnetoresistive position feedback • Plastic valve cover with integrated crankcase vent valve and oil separation • Stronger connecting rods • Exhaust valve stem increased to 6mm • New electric water pump (2nd generation) • Lightweight camshafts (hydroformed) 10 2007 Engine Introduction The N52KP will be available in three versions as follows: • N52B30O1 - High Output version with 260hp • N52B30M1 - M edium Output version with 230hp • N52B30U1 - Possible future application with 215hp Each of the above engines will have a different specific output for installation into various models. Forexample, the new E83 LCI (X3 3.Osi) will receive the "0" version which has a power output of 260 horsepower at 6600 RPM. 11 2007 Engine Introduction Technical Data (N52B30M1) Description Value Engine type Inline 6 cylinder Displacement (cm^) 2996 Stroke/bore (mm) 88/85 Cylinder spacing (mm) 91 Firing order 1-5-3-6-2-4 Power output(kw/bhp) @ RPM 172/230 @ 6250 RPM Torque (Nm) @RPM 270 @ 3000 Maximum engine speed 7000 Compression ratio 10.7 Valves/cyl 4 Knock control Yes Engine management MSV80 Emission compliancy (US) ULEV2 Injection system type M anifold injection 12 2007 Engine Introduction N51 Overview In orderto comply with SULEV requirements, the N51 is another variant of the N52 engine. There are various measures to meet the E PA/C ARB standards, some of which are familiarfrom the previous SULEV (M 56) engine. Some of the SULEV measures forthe N51 include: • Near engine catalyst with additional underbody catalyst • Secondary air system • Optimized combustion chamber geometry in cylinder head • M odified piston crown for lower compression • Plastic valve cover with integrated crankcase vent valve and separator (from N52KP) • Stainless steel fuel lines with threaded connections • Radiatorwith "Prem-air" coating • Throttle system - EGAS08 carried overfrom N52KP • Airboxwith Activated carbon filter for EVAP control • Purge system pipes are made from "optimized" plastic 13 2007 Engine Introduction 14 2007 Engine Introduction 15 2007 Engine Introduction