[volkman10]

To debut in Brazil, but will also come on the European model of Fiat Chrysler Group 3-cylinder and 4-cylinder - 1.0 and 1.3.

Fiat Chrysler unveils new aspirated engines, called FireFly 1.0 three-cylinder and four-cylinder 1.3. After its debut in Brazil, where they are produced, they will also come to Europe.

Here it can be assumed they will replace the current 1.2 and 1.4 (69 and 95 hp respectively). The new 1.0 has 72 hp while the 1.3 comes to 101 hp: both will be mounted on the renewed Fiat Uno for the Brazilian market

The FireFly engines have a modular architecture that provides for both of the same unit displacement, the block is made ​​of aluminum and are created to both improve the performance of the cars that will be installed as fuel consumption and pollutant emissions.
The smallest 1000 the maximum torque is 102 Nm at 3,250 rpm; on 1300, the values ​​increase to 134 Nm at 3,500 rpm. The couple, according to the FCA said, already is well distributed at low engine speeds, thus ensuring a pleasant drive to lower fuel consumption.

Both the FCA FireFly engines have two valves per cylinder with variable valve timing. They are matched inevitable Stop & Start system and a "smart" alternator, which recharges the battery during deceleration preferably (when energy is free, thanks to the inertia of the car). Meet Euro 6 legislation and are designed to last for 240,000 kilometers.

Both are made ​​of aluminum and share the same bore and stroke, the difference is that the 1.3 has a cylinder more. The compression ratio comes to 13.2: 1, which assists in yield. The use of two valves favored the turbulence of the mixture inside the cylinder, and allows a single command, with phase change in opening and closing. Thanks to this control, it is possible to hold the closing of the discharge valve and recirculated gas to the Miller cycle way. Aside from that, there is no more timing belt, the command is triggered by a silent double current, valid for more than 240,000 km.

Source

[amit_purohit20]

Aside from that, there is no more timing belt, the command is triggered by a silent double current,

How come the engine has no timing belt. How are the valves opened and closed by solenoids? Doing away with camshaft and other paraphernalia?

We all know injectors work by solenoids, but valves being operated purely by solenoids seems new to me.

[volkman10]

Originally Posted by amit_purohit20

How come the engine has no timing belt. How are the valves opened and closed by solenoids? Doing away with camshaft and other paraphernalia?

We all know injectors work by solenoids, but valves being operated purely by solenoids seems new to me.

Not necessarily it has to be a belt/chain drive,

Most modern production automobile engines use a timing belt or chain to synchronize crankshaft and camshaft rotation; some engines instead use gears to directly drive the camshafts

Link

[varunswnt]

Why don't we Indians get the multijet 2 and multiair engines? I can understand FCA doesn't have sufficient sales to justify for investing in these engines, but Maruti who sells so many of 1.3 multijet even hasn't bothered to provide us with multijet 2. What I can gather is that, our slow progress to move to Euro 6. In fact we aren't even yet fully euro 4 is the deal breaker for latest tech in engines. I don't hold any hopes of us getting any of these soon.

[volkman10]

Stellantis starts national production of the 180 hp turbo engines that will equip the new Jeep Compass and other products.

Production ceremony of the new 1.0 and 1.3 of the Firefly family done.

More powerful, strong and technological than Volkswagen's famous TSI

The thrusters will be offered in the 1.0 12V versions of three cylinders and 1.3 16V, the latter being the great star of the brand

The company revealed that the most powerful engine, internally called T4, will reach 180 hp and 27.5 kgfm in the gasoline version, for export. Sources within the company, however, ensure that the flex variant of the engine, which will equip the new Jeep Compass and Fiat Toro, will be even more powerful

There are still few technical details about the set, but it can be noted that the Firefly Turbo follow the same solutions as VW's EA211, with direct injection, turbo equipped with electric wastegate and air-water intercooler, more efficient for low displacement engines. The big surprise was the company's choice to use the MultiAir head, which allows greater control of intake valves.

The engine assembly line is attached to the Fiat plant and 350 people, with installed capacity to produce 700,000 engines and 500,000 gearboxes per year. On site are produced fire 1.0 and 1.4 and Firefly 1.0 and 1.3 (PR) u

Link

[kronos596]

Hi volkman10!

Is there any info on the 1.4 MultiAir engine being RDE and E20 compliant? This engine globally has been replaced by the 1.3 Firefly engine in Compass and Renegade. With the ongoing discounts and launch of Club edition of Compass in petrol DCT, what's to say that Jeep is clearing inventory of 1.4 engine and the 1.3 may finally be coming.

Another interesting point I noted in Team-Bhp's Compass Petrol AT review is that the 1.4 unit was an imported one (Link) from FCA China, which has since shut down in 2022. With competition in C2 segment(Creta/Seltos) set to get 160bhp,260Nm turbo engines, would love to see Compass move up to the 180bhp,270Nm 1.3 Firefly engine, which also supports Flex Fuel in Brazil.

PS: Mods, please delete/move to appropriate thread if found irrelevant.