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 some countries, where vehicle taxes favoured small-displacement engines.

2023年6月7日 · 该引擎由PSA（标致雪铁龙集团）和宝马共同研发，采用全铝机身、缸内直喷、双涡管涡轮增压、可变气门正时以及可变气门升程的设计，主要运用在宝马、迷你、标致、雪铁龙、DS等车型上，且在不同的车型上该发动机代号也不一样，并演变出很多分支，如N12/N14/N16/N18、EP3/EP6、THP150/THP175/THP163等。 到2015年后，宝马内部的N13发动机逐步被B38所取代。 在2011-2017年之间，宝马还推出了代号为N20的四缸涡轮增压发动 …

bmw n45是一种自然吸气的四缸汽油发动机，取代了bmw n40 ，并于2004 - 2011年生产。它是与宝马n46发动机一起生产的，仅在几个国家 /地区出售，那里的车辆税有利于小置换发动机。 n45基于n46，但是它没有平衡轴或阀门（可变阀升）。

2025年1月10日 · The BMW N45 engine is a part of the BMW’s modular engine family, introduced in the early 2000s. Designed primarily for the compact and mid-size vehicles in the BMW lineup, the N45 is a 1.6-liter inline-four engine that utilizes a …

2024年12月13日 · In a nutshell, the N45 is a relatively simple in-line atmospheric “four”. Without Valvetronic system and with “usual” distributed injection. We will tell about its features and problems on the example of its 1.6-liter version, taken from BMW 116i of 2007 release with a mileage of 160 000 km.

The BMW N45 is a straight-4 DOHC piston engine which replaced the N40 and was produced from 2004-2011. It was produced alongside the N46 and only sold in several countries, where vehicle taxes favoured small displacement engines.

The small 1.6-liter BMW N45B16 engine was developed in 2004 based on the predecessor N42B18. The new engine has a different crankshaft with a shorter piston stroke (it was 81, now 72 mm), different connecting rods and a modified piston.

2015年4月11日 · BMW N45B20S engine reliability, problems and repair. N45B20 engine was produced in 2006 in a limited amount. This motor was designed for BMW 320si E90 and replaced N42B20. In some case N45B20S can be considered to be a heritage of M44. It is also used in BMW si models.

2015年4月11日 · BMW N45B16 engine reliability, problems and repair. New 4-cylinder inline N45B16 engine was produced in 2004 on base of N42B18. This motor had new crankshaft with lower stroke, new pistons and modified connecting rods. At the same time Valvetronic system was removed from this version of engine.

2024年10月24日 · The N45B20S engine from BMW, produced at the Hams Hall plant between 2006 and 2007, is a highly advanced and powerful powertrain. This engine was designed to be fitted to the BMW 320si E90 sports model, emphasizing its …