宝马3系N45_46发动机培训课件 Participants Manual The information contained in this participants manual is intended solely for participants of the Aftersales Training Refer to the latest relevant "Technical Service" information for any changes supplements to the Technical Data conceptinfobmwde 2004 BMW Group München Germany Reprints of this manual or its parts require the written approval of BMW Group München VS-12 Aftersales Training Participants Manual E46 - Drive train N45 Engine N46 Engine Contents Models 1 Introduction 3 System components 9 Models N45N46 Engine Engine variants The following variants of the N45 and N46 engine will be installed in the N46 model series Model Model series Engine variant Phase-in date 316i E4625 N45B16AA 0304 316ti E465 N46B18AA 0304 316i E4643 N46B18AA 0304 318i E46234C N46B20AA 0304 The N45 engine will be used only for Greece and Portugal 1 2 Introduction N45N46 Engine New engine generation NG4 The N40 and N42 engines have been re- The performance data of the new engines engineered Under the new designation N45 remain unchanged As the N40 its successor and N46 respectively they carry on the line of the N45 will also only be used for the 4-cylinder engines countries Greece and Portugal Component differences N45 and N46 Component N45 N46 Differentiated intake system DISA No Yes Valvetronic No Yes Mechanical vacuum pump No Yes Electrically controlled suction jet pump Yes No Digital motor electronics DME ME 92 MEV 92 Changes Compared to the N40 and N42 engines the – Vacuum pump N46 only following components of the N45 and N46 – Roller-type cam follower engines have been changed – Counterbalance shafts – Cylinder head cover – Introduction of DME Bosch MEV 92 with – Crankshaft this change was already integrated Valvetronic control unit N46 implemented in the N40N42 only – Connecting rods – Spark plugs 3 Technical data Description N45B16 N46B18 N46B20 Engine type 4-cyl in-line 4-cyl in-line 4-cyl in-line 3 Displacement cm 1796 1796 1995 Borestroke mm 8481 8481 8490 Cylinder spacing mm 91 91 91 Crankshaft main bearing mm 4 x 56 4 x 56 4 x 56 1 x 65 1 x 65 1 x 65 Crankshaft big-end bearing mm 50 50 50 Power output kW 85 85 105 at engine speed rpm 6100 5500 6000 Torque Nm 150 175 200 at engine speed rpm 3900 3750 3750 。