INNOVATION
Engines
VTI engine
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.