The BMW N45 is a naturally aspirated four-cylinder petrol engine which replaced the BMW N40 and was produced from 2004-2011.[1] It was produced alongside the BMW N46 engine and only sold in several countries, where vehicle taxes favoured small-displacement engines.
The N45 is based on the N46, however it does not have balance shafts or Valvetronic (variable valve lift).[2] As per the N42 and N46, the N45 has double-VANOS (variable valve timing).[1] In 2007, the N45 was updated, which was called the N45N.
In 2007, the N45's successor - the BMW N43 - was introduced. However, the direct-injected N43 was not sold in countries with high-sulfur fuel, so the N45 continued to be produced alongside the N43. The N45 was phased out as new generation vehicles were released with the turbocharged BMW N13 four-cylinder engine.
The N45 was enlarged to 1,997 cc (121.9 cu in), to homologate the E90 320si for the World Touring Car Championship.[3] The N45 was chosen over the N46, because its lack of variable valve lift allows higher engine speeds. Instead, the engine used dual overhead camshafts and 16 valves. The main visual difference is the carbon fiber valve cover.
^ ab"Engine specifications for N45 engines". www.bmwheaven.com. Retrieved 3 June 2012.
^"BMW 116i now powered by 2.0L N46 Valvetronic". www.paultan.org. Retrieved 3 June 2012.
^"BMW 320si – A real driver's car". www.bmwblog.com. Retrieved 14 April 2017.
October 30, 2023
naturally, aspirated, four, cylinder, petrol, engine, which, replaced, produced, from, 2004, 2011, produced, alongside, engine, only, sold, several, countries, where, vehicle, taxes, favoured, small, displacement, engines, engineoverviewproduction2004, 2011lay. The BMW N45 is a naturally aspirated four cylinder petrol engine which replaced the BMW N40 and was produced from 2004 2011 1 It was produced alongside the BMW N46 engine and only sold in several countries where vehicle taxes favoured small displacement engines BMW N45 engineOverviewProduction2004 2011LayoutConfigurationInline 4Displacement1 6 L 1 596 cc 2 0 L 1 997 cc Cylinder bore84 mm 3 31 in 85 mm 3 35 in Piston stroke72 mm 2 83 in 88 mm 3 46 in Cylinder block materialAluminiumCylinder head materialAluminiumValvetrainDOHC with VVTCombustionFuel typePetrolChronologyPredecessorBMW N40SuccessorBMW N43The N45 is based on the N46 however it does not have balance shafts or Valvetronic variable valve lift 2 As per the N42 and N46 the N45 has double VANOS variable valve timing 1 In 2007 the N45 was updated which was called the N45N In 2007 the N45 s successor the BMW N43 was introduced However the direct injected N43 was not sold in countries with high sulfur fuel so the N45 continued to be produced alongside the N43 The N45 was phased out as new generation vehicles were released with the turbocharged BMW N13 four cylinder engine Contents 1 Models 1 1 N45B16 1 2 N45B20S 2 See also 3 ReferencesModels EditEngine Displacement Power Torque YearsN45B16 1 596 cc 97 4 cu in 85 kW 114 bhp at 6 000 rpm 150 N m 111 lb ft at 4 300 rpm 2004 2011N45B20S 1 997 cc 121 9 cu in 130 kW 174 bhp at 7 000 rpm 210 N m 155 lb ft at 4 250 rpm 2006N45B16 Edit Applications 2004 2011 E81 E87 116i 2006 2011 E90 E91 316iN45B20S Edit The N45 was enlarged to 1 997 cc 121 9 cu in to homologate the E90 320si for the World Touring Car Championship 3 The N45 was chosen over the N46 because its lack of variable valve lift allows higher engine speeds Instead the engine used dual overhead camshafts and 16 valves The main visual difference is the carbon fiber valve cover Applications 2006 E90 320si Limited production model See also EditBMW List of BMW engines BMW N43 BMW N46References Edit a b Engine specifications for N45 engines www bmwheaven com Retrieved 3 June 2012 BMW 116i now powered by 2 0L N46 Valvetronic www paultan org Retrieved 3 June 2012 BMW 320si A real driver s car www bmwblog com Retrieved 14 April 2017 Retrieved from https en wikipedia org w index php title BMW N45 amp oldid 1121093440, wikipedia, wiki, book, books, library,
