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Old 17th September 2016, 12:39   #1
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Default Fiat-Chrysler announce new 1.0 & 1.3 engines

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.

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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
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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.
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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.
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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.



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Last edited by GTO : 19th September 2016 at 10:30. Reason: Typo in the quoted post. Thanks for sharing!
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Old 17th September 2016, 13:38   #2
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Default re: Fiat-Chrysler announce new 1.0 & 1.3 engines

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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.
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Old 17th September 2016, 14:09   #3
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Default re: Fiat-Chrysler announce new 1.0 & 1.3 engines

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Originally Posted by amit_purohit20 View Post
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,

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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
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Old 17th September 2016, 20:52   #4
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Default re: Fiat-Chrysler announce new 1.0 & 1.3 engines

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.

Last edited by GTO : 19th September 2016 at 13:33. Reason: Typos
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