Lancia Delta 1.8 Di TurboJet

The Lancia Delta features a new turbo engine with gasoline direct injection: the 1.8 Di Turbojet with 200 HP (meets the Euro 5 emissions standard). That engine is associated with a 6-speed automatic gearbox.

The fastest of the entire range
This engine delivers a maximum power of 200 hp at 5,000 rpm and maximum torque of 320 Nm at 1,400 rpm. Combined with an automatic / sequential 6 speed, the new 1.8 Di Turbojet with 200 HP offers a maximum speed of 230 km / h, get an acceleration from 0 to 100 km / h in 7.4 seconds, consumes 7 8 l/100km on the combined cycle and achieves CO2 emissions of 185 g / km.

The 6-speed automatic transmission is distinguished by being compact and light change, besides having been designed with a focus on limiting consumption: first, the use of a low friction oil resulted in increased efficiency and, by Moreover, the sixth gear was placed to be especially helpful when driving on the highway. The specific management software can recognize the different road conditions and adjust driving through the following functions: braking assist, recognition of the slope, curve, desire for sport or comfort driving. It offers the possibility to select three different programs: "Winter" (for low-grip conditions), "Norm" (a mode for driving in normal conditions) and "Sport" (whichever sport that allows for faster gear changes both to raise as to lower relations). Logically also has an automatic mode. With the manual mode (TIP) change can be operated from the shift lever or with few controls on the steering wheel.

The 1.8 Di Turbojet with 200 HP is a new direct-injection turbocharged engine that gradually incorporate various models of the Fiat Group. This engine stands out mainly for its high performance, low consumption and CO2 emissions adjusted.

More precisely
This engine incorporates technology "Scavenging" means a solution obtained by controlling and optimizing at all times the engine parameters as the strength, the position of the two-phase inverters, the advance of start-up and commissioning phase of injection; practically be defined accurately and time of crossing angle of the valves in order to generate a flow of direct air intake manifold to discharge in a short time to drive the supercharger. This allows better use of overfeeding on conventional turbocharged gasoline engines. The system is managed using a new engine control switchboard, which has been implemented a new software that controls all parameters. The result obtained is as follows: The maximum torque at 1500 revs increased 70% compared to traditional turbo engine and response times are reduced, approaching that of a naturally aspirated engine.

Direct injection reduces the temperature in the combustion chamber by evaporating gasoline strongly decreasing the sensitivity to detonation. This achieves better performance even in the presence of a high compression ratio quietly (equivalent to 9.5) and ensures content with consumption regime "biased". Thanks to the double injection reduces consumption and emissions. And thanks to the direct control of the fuel, it manages to avoid that, during production of the Scavenging, part of the gas directly at the discharge end with harmful effects on the functioning of the catalyst. Finally, the injection system has a new second-generation high-pressure pump (capable of running a gas pressure of 150 bar) and new injectors with 7 holes to ensure a better vaporization at all engine operating conditions.

Dual variable valve timing
The two-phase continuous variable camshafts on the intake and discharge phases to optimize any scheme, engine load, while minimizing the consumption and emissions. Moreover, combining the two drives the turbocharger, is achieved by managing the strategy of "Scavenging" defined the right junction during transients. After a couple unexpected request by the driver can expedite the best possible engine response and at very low revs.

The engine has a new generation turbocharger attached to an innovative discharge collector type "Pulse Converter that takes full advantage of the discharge pressure waves to increase the torque at low engine speeds. Both the manifold and the turbine are made of steel Microfund to reach very high operating temperatures (up to 1020 º C), very important to reduce consumption during operation on highways at speeds medium / high.

Suctions are designed and optimized by using mono and computing technologies have enabled three-dimensional reach the correct level and high turbulence. That is possible right mix between air and gasoline (besides the combustion is accelerated and stabilized properly even from low engine speeds). Also the combustion chamber has been optimized for this engine turbo taking large areas of "squish" and minimizing the relationship between surface and volume with beneficial effects on combustion efficiency. Finally, the discharge chutes are designed to work in harmony with the discharge collector and to maximize their effect "pulse converter.

Low friction
The 1.8 TBi 200 hp has been designed with the objective of minimizing friction losses. The pistons have elastic bands reduced tangential load and used art materials to minimize wear. He has also designed a head cylinder in which roller rockers were introduced that reduced contact losses by 65% at 2000 revs over these in the cylinder heads Twin Spark engine. The mechanical optimization with very long rod, combined with a moderately short run, has ensured lower maximum vibration typical of four-cylinder engines during operation at high regimes. This has allowed not to use balance shafts contrarrotantes subsequently improving propellant consumption.

The specific torque (185 Nm / l) is very high and is among the highest for engines currently available. In addition, you can also say that the value of maximum torque (320 Nm) is reached at 1,400 rpm. The power output of 115 hp / l is reached at a relatively low regime of 4,750 rpm, remaining constant up to 5500 rpm.

Thanks to the double injection the value is very low emissions to meet the Euro 5 limit with a relatively small catalyst, which has positive effects on performance.