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The first Jeep to have FCA’s brand-new Global Small Engine (GSE) series will, unsurprisingly, be the Renegade — which was, after all, based on Fiat dimensions, heavily reworked for “trail readiness.”



The current model has a long-in-the-tooth 1.4 turbo, criticized by some for its responsiveness, and a 2.4 liter Tiger Shark option; outside the US, it also has a Fiat diesel.

Both gasoline engines could easily be replaced by the new GSE series. The 1.0 liter version is a yawner with just 120 horsepower and 140 pound-feet of torque; it does, at least, reach peak torque at 1,750 rpm.

The 1.3-liter GSE T4 is much more exciting, with 150 and 180 horsepower versions, reaching 199 pound-feet of torque at 1,850 rpm. That 180/199 version easily beats the current 1.4 turbo and the 2.4 as well — while getting 20% better gas mileage.



The 1.3 liter engine, again, outperforms the current 2.4 by a good margin. Both may be sold in North America for the time being; the company has not released USA powertrain information yet.

The new engines are, in keeping with Chrysler tradition, aluminum-block designs with 1.8-mm thick iron linings bonded to the block. The engines have bedplates to cut noise and vibration, and use a 70-mm bore with a stroke-to-bore ratio of 1.24 and a 10mm crank offset. The 1.0 liter engine is a three-cylinder, while the 1.3 is a four-cylinder; they share a common combustion-chamber design, four valves per cylinder, and a single cam.



Other features of the new engines include a high-tumble air intake, direct fuel injection, a low-intertia turbocharger with an electrically controlled wastegate actuator, and a water-cooled supercharger in the intake manifold for faster responses.

The new gasoline engines have MultiAir III; it continues independent valve opening and closing for each cylinder, but adds the ability to open the intake valves in advance for low-load efficiency, or to delay the intake valve closing for higher peak output.

An Allpar source wrote that the mild-hybrid version would have 48-volt engine electricals, but will not have the new belt-starter-generator system, which is apparently not worth the added cost.

For the moment, buyers outside North America can also get a choice of Fiat diesels, one with just 120 horsepower, another with 140 or 170 horsepower.

See more on the origin and insides of the GSE engines

Read the whole post here.
 
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