All-new Pentastar V-6 Engine from Chrysler Group LLC
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Chrysler's new V6 Pentastar engine
2011 Jeep Grand Cherokee
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Chrysler Group
22nd March, 2010
- The all-new flex-fuel Pentastar V6 engine is the most advanced six-cylinder engine in the history of Chrysler Group Powertrain
- Future applications of Pentastar V6 will incorporate Multiair, direct-injection and turbo charging
- 2011 Jeep® Grand Cherokee is the first vehicle to offer Pentastar
Chrysler Group LLC introduces the most advanced V6 engine in the company’s history — the Pentastar V6. This new line of V6
engines will contribute to an overall fuel-efficiency improvement across the Chrysler, Jeep and Dodge product line-up. More
refined and fuel-efficient, the Pentastar engine will ultimately replace seven current Chrysler Group V6 engines and utilise
advanced technologies from the Fiat alliance such as Multiair, direct-injection and turbocharging.
“First offered in the all-new 2011 Jeep Grand Cherokee, launching this year in the United States, our all-new Pentastar
V6 engine allows increased flexibility to apply new technologies and enables significant cost savings for the company by
substituting previous generation V6 engines,” said Paolo Ferrero, Senior Vice President—Powertrain, Chrysler Group LLC.
“By 2014, the new V6 will account for more than a third of our total engine output and contribute to an overall fuel economy
improvement of more than 25 per cent.”
In the all-new 2011 Jeep Grand Cherokee, the all-new 3.6 litre Pentastar V6 engine will deliver 216 kW at 6,350 rpm and 353 Nm
of torque at 4,300 rpm — an increase of 38 per cent in horsepower and 11 per cent in torque over its predecessor—while providing
an 11 per cent fuel economy improvement.
Customers Benefit: Fuel Efficiency, Refinement, Quality, Low Cost of Ownership
Chrysler Group Powertrain engineers benchmarked the industry’s leading engines to set functional targets. The result is an
all-new engine with an ideal integration of select technologies that deliver exceptional refinement, fuel efficiency and
performance.
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Chrysler Group’s all-new 3.6 litre Pentastar V6 engine offers double-overhead camshafts (DOHC) and a high-pressure die-cast
aluminium cylinder block in a 60-degree configuration. Additional features include a narrow-included valve angle, cylinder head
and high-flow intake and exhaust ports. This design, combined with dual-independent-cam phasing, allows optimum volumetric and
combustion efficiency over the full speed and load range, resulting in an exceptionally flat torque curve along with high
specific power — the engine’s torque exceeds 90 per cent of its peak value from 1,800 to 6,350 rpm, providing customers with
outstanding driveability and responsiveness, without the need for premium fuel.
“Our engineers synthesised the best combination of design features and technologies to create a V-6 engine that will
exceed customer needs,” said Bob Lee, Vice President — Engine and Electrified Propulsion Systems Engineering, Chrysler
Group LLC. “The elegantly simple design maximises functionality and provides class-leading levels of refinement,
fuel-efficiency, performance and cost of ownership.”
The advanced oil-filter system eliminates oil spills and contains an incinerable filter element for more efficient disposal
than typical oil filters. The use of long-life spark plugs and a high-energy coil-on-plug ignition system also helps to reduce
maintenance costs.
The Pentastar V6 is designed to run on regular petrol, offering a 10 per cent reduction in fuel cost compared with premium
fuelled engines. The engine also is flex-fuel capable, offering consumers the choice of regular petrol or E85 fuel.
Chrysler 3.6 litre, DOHC, 24-valve Pentastar V6 Technical Specifications
Displacement: 3.6 litres
Bore x stroke: 96 x 83 mm
Valve train system: Double-overhead cam with roller finger followers and hydraulic lash adjusters. Dual independent
cam-torque actuated phasers
Fuel injection: Multi-point port fuel injection
Construction: High-pressure die-cast aluminium cylinder block and semi-permanent mould aluminium cylinder head
Maximum engine speed: 7,200 rpm
Fuel requirement: E85 (Ethanol) or unleaded regular, 87 octane (R+M)/2
Emission capability: PZEV
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