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FCA's Pentastar V6 gets more power, efficiency for 2016

Already a vital member of FCA's powertrain lineup, the 3.6-liter Pentastar V6 is receiving major efficiency improvements for 2016. Thanks to a massive amount of new tech attached to the mill, fuel economy is up six percent, and torque below 3,000 rpm jumps nearly 15 percent. The updates arrive first in the 2016 Jeep Grand Cherokee, but they should proliferate to other models eventually. At least in the Grand Cherokee, the tweaks push power up five horsepower to 295 ponies. FCA's engineers went through the Pentastar from top to bottom to eke out as much efficiency as possible. For example, there's now a two-speed variable-valve lift system that can run in low- or high-lift modes. This upgrade is responsible for 2.7-percent better economy, the company claims. A new intake manifold with longer runners and updated variable-valve times also helps boost the torque output. Further improvements come from pushing the compression ratio to 11.3:1, from 10.2:1 before. Perhaps most impressive is that despite all of the innovations, the latest Pentastar actually weighs four pounds less than the current version. Beyond the Pentastar improvements, all of the FCA US gasoline engines, except for the Viper's 8.4-liter V10, will be E15-compatible for 2016. The company says that it wants to be ready for the higher ethanol content fuel's greater use in the near future.

Carmakers ask Trump to revisit fuel efficiency rules

Car companies operating in the US are required to meet stringent fuel efficiency standards (a fleet average of 54.5MPG) through 2025, but they're hoping to loosen things now that President Trump is in town. Leaders from Fiat Chrysler, Ford, GM, Honda, Hyundai, Nissan, Toyota and VW have sent a letter to Trump asking him to rethink the Obama administration's choice to lock in efficiency guidelines for the next several years. The car makers want to revisit the midterm review for the 2025 commitment in hopes of loosening the demands. They claim that the tougher requirements raise costs, don't match public buying habits and will supposedly put "as many a million" jobs up in the air. The Trump administration hasn't specifically responded to the letter, although Environmental Protection Agency nominee Scott Pruitt had said he would return to the Obama-era decision. The automakers' argument doesn't entirely hold up. While the EPA did estimate that the US would fall short of efficiency goals due to a shift toward SUVs and trucks, the job claims are questionable. Why would making more fuel efficient vehicles necessarily cost jobs instead of pushing companies to do better? As it is, even a successful attempt to loosen guidelines may only have a limited effect. All of the brands mentioned here are pushing for greater mainstream adoption of electric vehicles within the next few years -- they may meet the Obama administration's expectations just by shifting more drivers away from gas power. This article by Jon Fingas originally appeared on Engadget, your guide to this connected life. Related Video: News Source: ReutersImage Credit: Daniel Acker/Bloomberg via Getty Images Government/Legal Green Chrysler Fiat GM Honda Hyundai Nissan Toyota Volkswagen Fuel Efficiency CAFE standards Trump

Fiat Chrysler patent shows a turbocharged inline-six engine

The rumor that Fiat Chrysler is developing an inline six-cylinder surfaced on Allpar more than a year ago. In a follow-up report in December last year, Allpar tapped its sources to add more information, like the codename "Tornado" and the plan for the turbocharged motor to replace the 5.7-liter Hemi V8. Even so, it only made sense to speak of the engine as a rumor at the time. Now we have our first bit of circumstantial evidence, Mopar Insiders having found a patent issued to FCA that uses drawings of an inline-six to describe a system for tracking elements in exhaust gases in a turbocharged inline-six. FCA applied for the patent on November 1, 2017, the U.S. Patent and Trademark Office granted it April 2, 2019. As with everything else in a patent application, the drawing cannot be an accident. The U.S. PTO granted two other engine-related patents to FCA on March 19 and April 2 this year, and FCA used drawings of a V6 in both of those applications. The December Allpar report presumed one version of the Tornado engine would get a single, twin-scroll turbo and slot into service with Chrysler, Dodge, Jeep, and Ram. Another version with twin turbos, and perhaps revised heads, could do time with Alfa Romeo, Maserati, and perhaps SRT. Mopar Insiders doesn't break down turbo count, but cites its sources as revealing an output range of 360 horsepower up to 525 horsepower. FCA's E-Booster technology, originally mentioned as a way to help a revived Alfa Romeo 8C get 700 hp, will enable larger turbos on performance versions of the Tornado I-6. E-Booster electrifies some aspect of the turbocharger — FCA hasn't got into the details yet — to eliminate lag while providing 25 percent more power. Mopar Insiders' output figures would give the engine long enough legs to replace the 3.2-liter and 3.6-liter Pentastar V6s, as well as the 5.7-liter Hemi V8. The site said the Tornado will also replace the canceled 7.0-liter Banshee V8. The 3.0-liter Tornado Global Medium Engine Turbocharged 6 (GME T-6), based on the Hurricane 2.0-liter GME four-cylinder (GME I-4), is expected to go into FCA products around the world. We'll wait to see how the PSA merger might affect allocation. Displacement will come in a hair below three liters so as to avoid tax thresholds in certain countries, and it was said engineers were trying to keep the inline-six no more than three inches longer than the 2.4-liter Tigershark four-cylinder.