Chief Engineer Fiat-Chrysler Explains New Turbo Engines 1.0 and 1.3

The restyling of the Jeep Renegade in Europe debuted on the new turbocharged engines of Fiat-Chrysler: a three-cylinder of 1.0 and a four-cylinder of 1.3. The team of Motor1.com Italy took the first test drive to speak with the engineers responsible for the development of the new propellers.

More efficiency and less turbo lag

The basic design starts from Brazilian Firefly engines, with an aluminum block and 333cc cylinders each (three in 1.0 and up). four in 1.3). But the changes go beyond the installation of the turbo. The head has four valves per cylinder (against two in the Brazilian engine), the injection is direct (against the injection into the manifold) and there is also the MultiAir system that handles better the opening and closing the inlet valve. All this to achieve one goal: improve performance and reduce consumption by reducing the compression ratio.

They also moved into the admission ducts, with a new design. The combustion chamber has become more compact and has a higher thermodynamic efficiency. Minimizing the effect of the turbocharger, ie the response time that appears on all turbocharged engines, was one of the most affected points by engineers. They have been solved through the use of an electronically controlled exhaust valve, a cooling system that uses water to reduce the temperature of the turbine gases and a collector integrated exhaust in the cylinder head.

power and 19.3 kgfm of torque, in the 1.0, and 150 hp or 180 hp in the 1.3 (depending on the version), with a torque of 27.5 kgfm in both.

Emissions and Homologation

The new FCA 1.0 and 1.3 are homologated to meet the Euro 6D standards, then have a particle filter and have been approved according to the new tests of & nbsp; WLTP broadcasts, which carries out long-term exams at a higher speed and with standard equipment.

Awaiting Electrification

Great work has been done so that these engines can operate with different types of transmissions and traction. The 1.0 is offered with a manual transmission, while the 1.3 has a dual-clutch gearbox or a 9-speed automatic in 4×4 versions. "This is the first step in launching this line (engine), designed for the future and evolving to be electrified, whether with light hybrid or purely electric systems." The Jeep has said in its plans for the next 5 years that it intends to launch hybrid variants of all its models. Although the brand is already talking about the end of diesel in Europe, they do not stop at the engines MultiJet 1.6 and 2.0, with powers between 120 hp and 170 hp, both with new turbines that improve the response in low rotation. Brazil?

As we said in the evaluation of the European Renegade 2019, the restyled version in Brazil will not, of course, bring any turbo engines. FCA is still developing turbo versions of Firefly here, where they will maintain the flex injection and should produce respectively 120 hp and 160 hp, in 1.0 and 1.3. According to sources related to the brand, the debut here should only occur in 2020, not a Jeep. The trend is to 1.3 to appear first on the Argo / Cronos line, replacing the current 1.8 EtorQ, before reaching Renegade – not to mention the unpublished upcoming models. The turbocharged 1.0 may be an attraction in the upcoming change of Uno, predicted for line 2021.