Archive for June 22nd, 2018|Daily archive page

Renegade’s new engines: more power, torque

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.”2019 jeep renegade

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.

2019 renegade tail

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.

Read more at: https://www.allpar.com/news/2018/06/renegades-new-engines-more-power-torque-41101