Chrysler Group LLC Transforms Powertrain Strategy

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Chrysler Group LLC Transforms Powertrain Strategy

AUBURN HILLS, Mich., Jan. 7, 2010 Chrysler Group LLC is revamping its powertrain lineup with technology that will contribute to an overall fuel-efficiency improvement of more than 25 percent during the 2010-2014 period.

As a result of the new alliance with Fiat, the company's five-year business plan has an uncompromising powertrain offensive, including a progressive vehicle electrification strategy.

"Chrysler Group will attain leadership by rapidly applying Fiat Powertrain technologies, such as Multiair, direct injection, turbocharging and transmission systems to its powertrain portfolio," said Paolo Ferrero, Senior Vice President, Chrysler Powertrain. "By 2014 calendar year, more than 80 percent of Chrysler Group's current powertrain lineup will undergo a complete makeover."

In order to combine complementary strengths, Fiat Powertrain is the global center of expertise for diesel technology and small displacement gas engines (less than or equal to 1.8 liters). Chrysler Powertrain is the global center of expertise for large displacement gasoline engines and vehicle electrification technology. The primary goal is leveraging combined powertrain and vehicle knowledge to achieve best-in-class fuel economy for both companies.

New Four-cylinder Engines

Four-cylinder engine options are being expanded at Chrysler Group with the introduction of Fiat Powertrain's 1.4-liter, in-line four-cylinder Fully Integrated Robotized Engine (FIRE) featuring Multiair. In the early 1970s, the use of robotics in assembly plants was not common. The term "FIRE" came into existence when Fiat integrated the use of robotics in the production process of manufacturing plants. Although mechanized assembly is common today, the brand name FIRE has remained with Fiat's powertrain lineup.

Two variations of the engine will be available, naturally aspirated and turbo. Both versions of the 1.4-liter FIRE feature four valves per cylinder and incorporate state-of-the-art technology for Fully Variable-valve Actuation (FVVA), also known as Multiair. Fiat's Multiair technology significantly reduces emissions, while improving fuel economy and power. This sophisticated electro-hydraulic variable-valve actuation technology delivers an increase in power up to 10 percent, an improvement in low rpm torque up to 15 percent and a reduction in fuel consumption and emissions up to 10 percent when compared with similar engines without the technology. The Multiair system is based on a series of Fiat Powertrain patents related to hardware, combustion strategies and controls that allow for full control of the lift and timing of engine valves, independently on each cylinder and during each single engine stroke. Well suited for a small car application, the first North American vehicle to feature the 1.4-liter FIRE with Multiair is the Fiat 500.

Specifications

1.4-liter I-4 FIRE with Multiair

100 horsepower (75 kW) at 6,750 rpm

95 lb.-ft. (129 N*m) of torque at 4,250 rpm

1.4-liter I-4 FIRE Turbo with Multiair

170 horsepower (128 kW) at 6,750 rpm

170 lb.-ft. (231 N*m) of torque at 3,000 rpm

Another addition to the Chrysler Powertrain lineup is the new 2.4-liter, in-line four-cylinder World Gas Engine (WGE) with Multiair. This new engine stands as an example of Chrysler Powertrain's rapid integration of Fiat technology. Chrysler Powertrain's 2.4-liter WGE features Fiat's Multiair technology that will improve fuel economy and specific-power output. In comparison with its predecessor, the 2.4-liter with Multiair delivers an increase in power, an improvement in low rpm torque and a reduction in fuel consumption and emissions output. A turbo version of the 2.4-liter WGE also is under development for future applications.

Specifications

2.4-liter I-4 World Gas Engine with Multiair

190 horsepower (142 kW) at 6,000 rpm (estimated)

175 lb.-ft. (237 N*m) of torque at 4,200 rpm (estimated)

All-new V-6 Pentastar Engine

Chrysler Powertrain will streamline its V-6 gas engine offerings from six options to the new fuel-efficient, state-of-the-art 3.6-liter V-6 Pentastar engine. The first application of this engine will be in the all-new 2011 Jeep® Grand Cherokee, due out in the second quarter this year. Chrysler Group's all-new Pentastar V-6 is the most advanced six-cylinder engine in the history of Chrysler, with an optimized integration of select technologies that deliver refinement, fuel efficiency and performance. The Pentastar delivers a fuel efficiency improvement of up to 8 percent on average when compared with previous Chrysler Group V-6 engines and delivers 90 percent of its available torque from 1800-6400 rpm. In the all-new 2011 Jeep® Grand Cherokee, the 3.6-liter Pentastar V-6 engine offers an increase of 33 percent in horsepower and an 11 percent improvement in torque over its predecessor. The Pentastar V-6 is designed to use technologies such as Multiair, direct-injection and turbocharging for future applications.

Specifications

3.6-liter V-6 Pentastar

280 horsepower (209 kW) at 6,400 rpm

260 lb.-ft. (353 N*m) of torque at 4,400 rpm

New Transmission Technology

Beginning with mid-size D-segment cars in 2010, Chrysler Powertrain will migrate Fiat's six-speed Dual Dry Clutch Transmission (DDCT) to Chrysler Group vehicles. The DDCT delivers a 10 percent improvement in fuel efficiency while enhancing performance. It transitions seamlessly from economy to sport mode when desired and can handle up to 260 lb.-ft of torque (350 N*m). The DDCT uses the best characteristics from both a manual transmission and an automatic transmission. This combination delivers the efficient performance of a locked gear mechanical path, but maintains the drivability and comfort of an automatic transmission.

Vehicle Electrification

In November 2009, Chrysler Group revealed a new engineering organization model showing the company as the center of competence for vehicle electrification efforts for Chrysler Group and Fiat Group. The resources previously spread in different electrification development groups have been assigned to the powertrain and vehicle engineering mainstream--a clear sign of how the Chrysler Group intends to move from research and development to vehicle production.

As part of its five-year plan, Chrysler Group currently is developing a Ram 1500 with traditional hybrid capability for 2010. The company also continues its plan with the Department of Energy to build a small test fleet of plug-in hybrid Ram 1500 pickup trucks and minivans. Because pure electric vehicles lend themselves to commercial applications, Chrysler Group is considering a small electric delivery van application for 2011-2012 with an appropriate business case.

The company has a significant amount of resources allocated toward vehicle electrification and affirms a commitment by continuing to add talent in this leading-edge technology arena.



SOURCE Chrysler Group LLC

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Chrysler's New Four- and Six-Cylinder Engines

Jan 8th, 2010

If Chrysler is looking to gain any one thing from its new parents at Fiat, it's engine technology. Specifically, the Pentastar will be enlisting its Italian overlords to supply direct injection systems, turbocharging, and Fiat's Multiair variable valve technology, along with new dual-clutch transmissions. Chrysler claims all of this technology is going to boost the overall fuel-efficiency of its vehicles by 25 percent between now and 2014, with over 80 percent of Chrysler, Dodge and Jeep vehicles getting new mills in the process.

To that end, Chrysler has finally announced the details of its new powertrain lineup, including two small-displacement four-cylinders and a new V6.

On the four-pot front, Chrysler will begin fitting one of two new 1.4-liter four-cylinder engines on future models: a naturally aspirated version kicking out 100 horsepower (at 6,750 rpm) and 95 pound-feet of torque (at 4,250 rpm), as well as a turbocharged variant that churns out 170 hp (at 6,750 rpm) and 170 lb-ft of twist (at 3,000 rpm). In keeping with its Italian ancestry, Chrysler has dubbed these new mills "Fully Integrated Robotized Engines" and each features Fully Variable-valve Actuation (FVVA) – what we've come to know as Multiair across the Atlantic. Chrysler maintains that both engines offer a 10 percent reduction in emissions and fuel consumption while putting out between 10- to 15-percent more power than its outgoing mills.

A larger displacement, 2.4-liter inline four with Multiair will also come to market, putting out 190 hp (at 6,000 rpm) and 175 lb.-ft of torque (at 4,200 rpm), and along with the new trio of four-cylinders, Chrysler announced specs on the new Pentastar V6. Displacing 3.6 liters and putting out 280 hp (at 6,400 rpm) and 260 lb-ft of torque (at 4,400 rpm), the new six will see similar fuel consumption and emissions reductions and will be fitted to the all-new 2011 Jeep Grand Cherokee later this year.

In 2010, Chrysler says that it will begin to equip its mid-size vehicles (D-segment) with a new six-speed Dual Dry Clutch Transmission (DDCT), that improves fuel economy and can handle up to 260 lb-ft of torque. Expect to see the new tranny making its way into the next-generation Sebring and Chrysler's new crossovers.

And if all that wasn't enough, Chrysler announced its intentions to bring a hybrid Ram 1500 market this year, along with working with the Department of Energy to build a small test fleet of plug-in Rams and minivans, including an electric delivery van for fleet use in 2011 or 2012.

LINK w/pictures:
Chrysler releases details on Fiat-infused fours, new V6 — Autoblog