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. (Earlier post.)

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 technology for Fully Variable-valve Actuation (FVVA), also known as Multiair. This electro-hydraulic variable-valve actuation technology delivers an increase in power up to 10%, an improvement in low rpm torque up to 15% and a reduction in fuel consumption and emissions up to 10% 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.

The 1.4-liter I-4 FIRE with Multiair will deliver 100 hp (75 kW) at 6,750 rpm , with 95 lb-ft (129 N•m) of torque at 4,250 rpm. The 1.4-liter I-4 FIRE Turbo with Multiair will deliver 170 hp (128 kW) at 6,750 rpm , with 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.

The 2.4-liter I-4 World Gas Engine with Multiair will deliver 190 hp (142 kW) at 6,000 rpm (estimated), with 175 lb-ft (237 N•m) of torque at 4,200 rpm (estimated).

Chrysler Group Pentastar V-6 with VVT. Click to enlarge.

All-new V-6 Pentastar Engine . Chrysler Powertrain will streamline its V-6 gasoline engine offerings from six options to the new fuel-efficient, state-of-the-art 3.6-liter V-6 Pentastar engine. (Earlier post.) 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 its most advanced six-cylinder engine, 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% on average when compared with previous Chrysler Group V-6 engines and delivers 90% 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% in horsepower and an 11% 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.

The 3.6-liter V-6 Pentastar will deliver 280 hp (209 kW) at 6,400 rpm and 260 lb-ft (353 N•m) of torque at 4,400 rpm.

Fiat Powertrain Technologies Dual Dry Clutch Transmission (DDCT). Click to enlarge.

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% 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 says that it has a “significant” amount of resources allocated toward vehicle electrification and affirms a commitment by continuing to add talent in this arena.