PSA(标致雪铁龙)与BMW联合研发了两种VTi（Variable Valve Lift and Timing injection可变气门升程和可变正时）发动机，1.6L（120马力）和1.4L（95马力）。

率先安装在标致207上的1.6L VTi  120马力发动机是一台非直接喷射的自然吸气发动机，它在6000转时的最大功率是88kW（120马力），在4250转时的最大扭矩是160Nm，它的输出扭矩曲线非常均匀，甚至在低至2000转的转速下，就可以发出最大扭矩的88%约140Nm，提供了在很宽的转速范围内的平坦的扭矩曲线。尽管VTi发动机和1.6 THP的发动机的很多零部件是共用的，但它们的技术是完全不同的，VTi发动机的性能大大优于同样排量的发动机。 对于吸气和排气凸轮轴，除了可变正时以外，进气阀上的可变气门升程系统可以随着加速（油门）踏板的踏下位置，逐步达到其最大开度。

从BMW集团的ValveTronic概念开发出来的，将两种VVT（可变气门正时或连续可变正时）技术和可变进气门升程技术结合起来，就可以提高发动机的热效率。这样就显著降低了燃油的消耗（尤其是在某些负载条件下），并且降低了二氧化碳排放，同时还改善了发动机的响应和灵活性。

以308为例，其百公里（高速和城市的综合路况）的综合油耗是6.7L，但其动态性能仍比307（装备老的1.6L 110马力发动机）提高了10%。

VTi 发动机系列

1.6L VTi 120马力，装备207 和308,

1.4L VTi 95 马力，装备207 和308,

THP系列高增压发动机系列

这种1.6L THP（150马力）16气门发动机（缘起207）形成了一个新的汽油发动机系列，是PSA集团与BMW集团的另一个合作成果。

这个合作团队的目标是开发出一款具有创新技术的汽油发动机系列，它是一款低油耗的，并且满足一定成本约束条件的高性能的发动机，使其能够应用于低端与中低端汽车市场需求的汽油发动机。

合作双方都投入了他们最好的技术和专长，无论是在发动机的设计方面还是制造工艺方面。

该引擎在PSA集团位于法国Douvrin的工厂生产。

1.6L THP引擎具有16个气门，DOHC双顶置凸轮轴，四缸，排量1598cc。它在5800转时能产生110kW的最大功率输出（150匹马力）。

之所以选择4缸1.6L引擎，是因为在同样的油耗条件下，和较大排量的自然吸气发动机相比，带涡轮增压的发动机尺寸比较小而且输出功率高，优势明显。这种降低尺寸的设计策略与标致的Hdi系列柴油机的设计策略是一致的

这种新的汽油机使用了非常先进的技术，完全能够满足207，事实上，有一个马力大点的发动机，车开起来那才叫爽！

它在路上的表现就是性能的体现，起步到1000米仅需29.4秒，从80km/h用5档加速到120km/h仅需8.2秒（比较下，206 S16，虽然重量较轻，但它要10.1秒）。在5档的最大速度能达到210km/h。创新技术的使用，使得该发动机在低转速时也能获得很高的扭矩输出，并有助于降低油耗至7.0L（百公里综合油耗，相比而言206 S16需要7.7L），而且使降低二氧化碳的排放成为可能，207的二氧化碳排放是166g/km，206 S16的二氧化碳排放是185 g/km。

THP 发动机系列:

1.6l THP 150 马力，装备 207 和 308,

1.6l THP 175 马力，装备 207RC

1.6l THP 140 马力，装备 308 自动档（Tiptronic ，AT）

参考文献: 307车友"老朽307"的帖子:

原文:

Both VTi engines, the 1.6l (120 bhp) and the 1.4l (95 bhp), are the result of the co-operation between the PSA Peugeot Citroën and BMW Group as well.

 The 1.6l VTi 120 bhp (Variable Valve Lift and Timing injection), launched on the 207, is an indirect injection naturally aspirated engine developing a maximum power of 88 kW (≈ 120 bhp) at 6000 rpm and a maximum torque of 160 Nm at 4250 rpm. This torque is available very uniformly, since even at low engine speeds (2,000 rpm), it attains 140 Nm, or 88 % of its maximum capacity, thereby ensuring a wide operating range. This engine’s technology, very different from that of the 1.6 THP despite the large number of common components, is a genuine first at this level of engine capacity. In addition to its variable timing system for the inlet and exhaust camshafts, a variable lift system on the inlet valves allows their maximum stroke to be adjusted gradually according to the position of the accelerator pedal.

The use of these two VVT systems (Variable Valve Timing or continuously variable timing) combined with the variable inlet valve lift system makes it possible, to improve the thermodynamic efficiency of the engine (developed from the BMW Group’s VALVETRONIC concept). This then significantly reduce the fuel consumption (particularly in partial load conditions), and therefore CO2 emissions, but also improves engine response and flexibility.

This engine thus provides the 308 for instance with good level of dynamic performance while reducing fuel consumption to only 6.7 litres per 100 km in the combined cycle (i.e. a gain of more than 10 % compared to a 307 equipped with the old 1.6 litre 110 bhp engine).

VTi range:

1.6l VTi 120 bhp available on 207 and on 308,

1.4l VTi 95 bhp available on 207 and on 308.

THP engine

The 1.6 litre THP 150 bhp (Turbo High Pressure) 16v engine (launched on 207) launched a new family of petrol engines, the result of the co-operation between the PSA Peugeot Citroën and BMW Group.

The aim of this partnership is to develop petrol engines which are equipped with innovative technologies that offer high levels of performance - with low fuel consumption - at the same time as meeting the cost constraints imposed in the lower and lower-medium vehicle market segments.

Each partner has contributed the best of their skill and expertise, whether it be in engine design or in manufacturing processes.

The engine is produced at the PSA Peugeot Citroën factory in Douvrin, France.

Each partner has contributed the best of their skill and expertise, whether it be in engine design or in manufacturing processes.

The engine is produced at the PSA Peugeot Citroën factory in Douvrin, France.

The 1.6 litre THP engine has a sixteen valve cylinder head with two overhead camshafts and 4 cylinders displacing 1598 cc. It produces a maximum power output of 110 kW (150 bhp) at 5800 rpm.

The choice of a 4-cylinder 1.6 litre engine was made because small turbocharged engines with a high specific power output, offer a significant advantage in terms of fuel consumption over normally aspirated engines with a larger displacement. This downsizing strategy is also in line with Peugeot's HDi diesel engine strategy.

This new petrol engine uses very innovative technology and is capable of making the 207, for instance, as dynamic and enjoyable to drive as a car with a larger engine.

Its performance is evidence of this as with just the driver on board, it only takes 29.4s to cover the standing start 1,000 m and accelerates from 80 to 120 km/h in 5th gear takes only 8.2 s (in comparison, the 206 S16, despite a weight advantage, took 10.1 s). The maximum speed of 210 km/h is reached in 5th gear. The innovative technology used in this engine and the high torque output available at low engine speeds, helps reduce the fuel consumption to (7.0 l /100 km in the combined cycle compared with 7.7 l /100 km for the 206 S16) and makes it possible to reduce the CO2 emissions (166 g/km compared with 185 g/km for the 206 S16).

The THP range:

1.6l THP 150 bhp available on 207 and 308,

1.6l THP 175 bhp available on 207 RC,

1.6l THP 140 bhp with « Tiptronic System Porsche » automatic gearbox available on 308.