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2007 Peugeot 207 6 l THP 16v

As soon as it was launched, the 207 has proved to be a worthy heir to the ’20’ series dynasty. With its feline and dynamic styling, wide ranging standard specification levels, suspension developed using Peugeot’s renowned expertise and comprehensive safety equipment it meets the requirements of many different customers. The 207 was first launched in April 2006.

With 110,000 cars already produced, the 207 is undeniably successful with buyers, attracted by a stylish vehicle that offers both value and versatility. To meet the requirements of a wide range of customers the 207 is available with a choice
of engines:

In Petrol:

  • 1.4 l 54 kW ( 75 bhp) - to be launched during September 2006
  • 1.4 l 65 kW 16v ( 90 bhp)
  • 1.6 l 80 kW 16v ( 110 bhp)

In Diesel:

  • 1.4 l HDi 50 kW ( 70 bhp)
  • 1.6 l HDi 66 kW ( 90 bhp)
  • 1.6 l HDi 80 kW ( 110 bhp)
Peugeot 207 1.6 l THP 16v

The 207 range now sees the introduction of a new top of the range petrol engine which produces 110 kW ( 150 bhp).

As a result of the co-operation between PSA Peugeot Citroën and the BMW Group this new-generation engine includes a number of technically advanced features. This helps to increase the engine’s performance and torque output over a very wide
operating range, while at the same time help reduce both fuel consumption and exhaust emissions.

The engine know as the EP6DT is the first of a new family of direct injection, high pressure turbo charged petrol engines, which will be known generically as THP (Turbo High Pressure). In the 207 range the 1.6 litre THP 16v engine will be available, exclusively at launch, in the new Griffe level, firstly in the three door version and then in the five door
version before the end of the year.

Engine


The EP6DT 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.

From design onwards, the specification of the engine was aimed at meeting many requirements:

  • Ensure adequate power directly comparable with that obtained with a normally
  • aspirated 2.0 litre engine,
  • Provide great driveability, in particular through a high torque output at low engine
  • speeds,
  • Reduce fuel consumption and emissions,
  • Ensure the engine is compact and light weight, so that it is easier to fit into small
  • vehicles.
Peugeot 207 1.6 l THP 16v

The aim is therefore to increase the pleasure and driveability experienced by 207 customers but, at the same time reduce running costs to a minimum. On this engine, a lot of attention has been paid to the torque output and reducing possible turbo lag. Due to this the engine produces 156 Nm of torque from 1000 rpm. The engines maximum torque output of 240 Nm is reached at only 1400 rpm and remains unchanged up to 3500 rpm. In addition, it offers a wide usable engine speed range, as the torque is still 208 Nm at 5000 rpm.In terms of maximum power the 1.6 litre THP 16v engine produces 110 kW ( 150 bhp) at 5800 rpm.

Several technological innovations have made it possible to meet these technical challenges,
in particular:

  • Direct fuel injection,
  • Twin-Scroll turbocharger,
  • Continuously variable valve timing (VVT) on the inlet camshaft,
  • Flow controlled oil pump,
  • Innovative crankcase design.


Direct Fuel Injection – Increases Performance


The use of direct injection makes it possible to combine a high specific power output with low fuel consumption. It also gives excellent results in terms of emissions. A mechanically driven two-piston high pressure fuel pump is fitted on the end of the inlet camshaft and feeds the fuel injectors through a stainless steel fuel distribution rail.The highpressure injectors spray the fuel directly and laterally into the combustion chamber at a maximum pressure of 120 bar.As this distributes the mixture evenly inside the combustion chamber, combustion is improved and the overall power output of the engine is increased.

In addition, direct injection contributes to reducing the quantity of fuel that is incompletely burnt by reducing the proportion of fuel in contact with the cylinder walls. It should, however, be noted that this turbocharged petrol engine also has a comparatively high compression ratio of 10.5:1.

Design


The construction of the aluminium crankcase in two parts, cylinder block and main bearing housing guarantees:

  • Extreme rigidity thanks to the stiffening ribs,
  • Excellent noise suppression, similar to those of a thicker (and therefore much heavier) cast iron cylinder block.
Peugeot 207 1.6 l THP 16v

The aluminium cylinder block has cast-iron liners inserted in to it during the production process in the foundry. A separate main bearing housing is bolted directly to the base of the cylinder block, securely locating the crankshaft. As a result of the considerable physical stresses created by the increased torque generated by the use of a turbocharger, sintered steel inserts are inserted around the location points of the crankshaft main bearings.

Considerable effort has also been made to reduce friction losses from the crankshaft assembly, and the crankcase has been designed to minimise the pumping losses created by the movement of the connecting rods and crankshaft.

Performance


This new petrol engine uses very innovative technology and is capable of making the 207 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).



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