The new generation of 3 -cylinder engines arrives in Peugeot, which is a true revolution in terms of consumption and CO2 emissions, maintaining a high level of benefits.
Released by 208, these engines, known with the internal EB code, have been fully developed by the PSA group. They are born as a result of an ambitious specifications launched in 2008, which set as objectives the reduction of CO2 emissions and consumption, compactness and weight optimization, as well as a good level of benefits guaranteed by a specific power of no less than 50 kW/liter. Therefore, in relation to a 4 equivalent power cylinders, the weight of the new 3 cylinders 1.2 liters VTI has been reduced by 21 kilos, while its consumption and its CO2 emissions have decreased by 25%.
Efficient technologies
friction losses represent about a fifth of the power consumed by an engine and, consequently, suppose a very important development axis. Thus, in the new EB blocks, 30% have been reduced thanks to the use of different technologies:
- Diamond Like Carbon coating on the axes of the pistons, segments and pushers
- Wet distribution strap integrated into a crankcase, which improves the silence of operation and whose useful life is equivalent to that of the car itself
- Decentralized pistons
As if all of the above were not enough, combustion has been optimized by improving the aerodynamics of the cameras (admission ducts, piston heads) and adapting the ignition to a operation with a strong percentage of waste gases (IGR).
The cylinder head, made in aluminum alloy, is equipped with 4 valves per cylinder, incorporating multi -multi indirect injection and continuous variable distribution both in admission and exhaust (VVT). In addition, this butt is manufactured according to the PMP process-in lost mold carried out at the Charleville factory-, which is one of the few in the world capable of carrying out such sophisticated construction system. This industrial process reduces the number of pieces and the volume of the set; In EB engines, the exhaust collector, the cooling output module and engine supports are integrated into the cylinder head.
The new 3 -cylinder engines have a variable flow oil pump, electronically controlled to constantly work at optimal pressure. On the other hand, for the engine to take temperature, the CO2 emissions are thus previously reduced, the cooling cooling type is. In this way, in the start -up, the cylinder head and the cylinder block work with different cooling circuits, so that the latter wins temperature more quickly. In addition, the 1.2 L VTI is equipped with a counter-re-balancing tree that improves acoustic comfort and vibrations.
The combination of architectural re-generation and this new generation of 3-cylinder engines allows 208 to offer a range of gasoline engines that start in the 99 g/km of CO2 and 4.3 l/100 km in a mixed cycle, which is a reduction of 46 gy 2 l/100 km in the case of the access to the range. These indirect injection atmospheric engines develop, respectively in the cases of 1.0 L vti and 1.2 L VTI, a maximum power of 50 and 60 kW (68 and 82 hp) at 6,000 rpm and a maximum torque of 95 Nm to 3,000 rpm and 118 Nm to 2,750 rpm.
The folder with the 52 patents registered in this new family of engines makes clear industrial and technological competences used. Of the aforementioned patents, 23 refer to the motor architecture and its peripherals, 20 to the control of the motor and the remaining 9 to the specific manufacturing processes and tools.
About 3 cylinders that anticipate future regulations
Throughout 2013, the 208 range will also be completed with the arrival of a version equipped with Stop & Start of the 1.2 L VTI engine that, equipped with a piloted gearbox, will reduce its CO2 emissions to 95 g/km.
Subsequently, and following a constant evolution, other developments such as supercharging and direct injection will arrive. Indeed, since the beginning of their development, these engines were thought to comply with future regulations, in particular, Euro 6.
