Pentastar engine
Overview
ManufacturerStellantis North America
Production2010 (2010)–present
Layout
Configuration60° V6
Displacement3.0 L; 182.9 cu in (2,997 cc)
3.2 L; 197.7 cu in (3,239 cc)
3.6 L; 219.9 cu in (3,604 cc)
Cylinder bore91 mm (3.58 in) (3.2L)
96 mm (3.78 in) (3.6L)
Piston stroke76 mm (2.99 in) (3.0L)
83 mm (3.27 in) (3.2L & 3.6L)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC 4 valves per cyl. (24 total)
Valvetrain drive systemTiming chain
Compression ratio10.7:1 (3.2L)
10.2:1 (3.6L)
11.3:1 (Upgrade)
Combustion
Fuel systemSequential MPFI
Fuel typeGasoline
E85
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output230 hp (172 kW) (3.0L)
271 hp (202 kW) (3.2L)
275–305 hp (205–227 kW) (3.6L)
Torque output210 lb⋅ft (285 N⋅m) at 4400 rpm (3.0L)
239 lb⋅ft (324 N⋅m) at 4400 rpm (3.2L)
251–269 lb⋅ft (340–365 N⋅m) (3.6L)
Dimensions
Length503 mm (19.8 in)
Chronology
PredecessorChrysler SOHC V6
Chrysler 3.3 & 3.8 engine
Chrysler LH engine
Chrysler Powertech V6

The Chrysler Pentastar engine family is a series of aluminium (die-cast cylinder block) dual overhead cam 24-valve gasoline V6 engines introduced for the 2011 model year in Chrysler, Dodge, and Jeep vehicles. The engine was initially named "Phoenix," but the name was changed before the official launch due to a trademark conflict; the Pentastar name is derived from the trademark of the former Chrysler Corporation, which dates back to 1963.

Production

The Pentastar engines are made in three different factories: Dundee Engine Plant, Trenton Engine Plant and Saltillo South Engine Plant.[1]

The Pentastar engine was introduced at the 2009 New York Auto Show.[2][3] The engine design allows the use of E85 or 87 octane fuel and features dual variable valve timing. Forced induction, and cylinder deactivation options were engineered into the engine design, but have not been implemented from the factory, remaining "on the shelf" as of 2016.[4]

Insiders initially reported that the engine would come in four basic sizes (3.0, 3.3, 3.6, and 4.0 L), each offered in various states of tune. The 4.0 L has been dropped from the list and a 3.2 L added, while Fiat's investor website, as of December 2011, specifies the 3.0 L with Fiat's MultiAir technology.[5] The 3.6 L engine itself has different horsepower ratings in different vehicles, and has higher output 305 hp (227 kW; 309 PS) and 268 pound force-feet (363 N⋅m) of torque when applied in the Dodge Challenger.[6]

Single and Twin-turbocharged variants had been planned for 2015. These engines were projected to produce around 420 and 370 hp (313 and 276 kW; 426 and 375 PS), respectively. Direct injection was also planned.[7]

Due to the new ownership structure, Fiat has obtained the right to use these engines, and had adopted them in the larger models of Lancia and Fiat brands.

First generation

Applications

3.0 L

3.2 L

3.6 L

Versions

Code Displacement Bore Stroke Years Power SAE Torque SAE
3.0 L; 182.9 cu in (2,997 cc) 91 mm (3.58 in) 76 mm (2.99 in) 2013– 172 kW (234 PS) at 6350 rpm 285 N⋅m (210 lb⋅ft) at 4400 rpm
S 3.2 L; 197.7 cu in (3,239 cc) 83 mm (3.27 in) 2014– 271 bhp (202 kW; 275 PS) at 6750 rpm (Cherokee) 239 lb⋅ft (324 N⋅m) at 4400 rpm
G 3.6 L; 219.9 cu in (3,604 cc)[9][10] 96 mm (3.78 in)[9] 83 mm (3.27 in)[9] 2010– 283 bhp (211 kW; 287 PS) at 6400 rpm (Avenger, Grand Caravan, Journey, Town & Country, 200, Routan) 260 lb⋅ft (353 N⋅m) at 4800 rpm
290 bhp (216 kW; 294 PS) at 6350 rpm (Grand Cherokee, Durango)
292 bhp (218 kW; 296 PS) at 6350 rpm (Charger, 300)[11]
305 bhp (227 kW; 309 PS) at 6350 rpm (Challenger) 268 lb⋅ft (363 N⋅m) at 4800 rpm
2012– 285 bhp (213 kW; 289 PS) at 6400 rpm (Wrangler) 260 lb⋅ft (353 N⋅m) at 4800 rpm
2013– 300 bhp (224 kW; 304 PS) at 6350 rpm (Charger Rallye Group, 300S) 264 lb⋅ft (358 N⋅m) at 4800 rpm
305 bhp (227 kW; 309 PS) at 6400 rpm (RAM 1500)[11] 269 lb⋅ft (365 N⋅m) at 4175 rpm
2015– 2016 295 bhp (220 kW; 299 PS) at 6350 rpm (Chrysler 200) 262 lb⋅ft (355 N⋅m) at 4250 rpm
2012- 280 PS (206 kW) at 6350 rpm (Fiat Freemont) 342 N⋅m (252 lb⋅ft) at 4350 rpm
283 PS (208 kW) at 6600 rpm (Lancia Voyager) 344 N⋅m (254 lb⋅ft) at 4000 rpm
286 PS (210 kW) at 6350 rpm (Lancia Thema) 340 N⋅m (251 lb⋅ft) at 4650 rpm

Pentastar upgrade

For 2016, FCA released an updated version of the 3.6 L engine. This engine features upgrades to the variable valve timing (VVT) system, two-stage variable valve lift (VVL), a new intake manifold, new valve springs, new piston rings, new fuel injectors, new ignition coils, a cooled EGR, lower internal friction and lower weight. It also features a higher compression ratio, increased from 10.2:1 to 11.3:1. These improvements increase power as well as efficiency.[12] The new version no longer supports flex-fuel capability.

Code Displacement Bore Stroke Power SAE Torque SAE
G 3.6 L; 219.9 cu in (3,604 cc) 96 mm (3.78 in) 83 mm (3.27 in) 305 hp (227 kW; 309 PS) 269 lb⋅ft (365 N⋅m)
3.6 L VVT in a 2018 Dodge Grand Caravan

Applications

See also

References

  1. ^ "FCA US LLC Manufacturing Operations". media.chrysler.com (Press release). Retrieved May 11, 2015.
  2. ^ Joseph, Noah (April 13, 2009). "Chrysler's flexible new Pentastar V6". Autoblog.com. Retrieved September 29, 2010.
  3. ^ "NY Show: Chrysler LLC Introduces All-new Pentastar V-6 Engine". Redletterdodge.com. Archived from the original on April 16, 2009. Retrieved September 29, 2010.
  4. ^ "2016 Pentastar V6 adds new VVT, cooled EGR". Archived from the original on November 5, 2015.
  5. ^ "2011 Fiat Investor Site" (PDF). Fiatspa.com. Retrieved December 7, 2011.
  6. ^ "2011 Dodge Challenger cars". allpar.com. Retrieved October 26, 2010.
  7. ^ "Chrysler Pentastar V6 Engines for 2010 and Beyond". allpar.com. November 16, 2020. Retrieved January 13, 2023.
  8. ^ "Chrysler Brand Releases Information Regarding New 2011 Mid-sized Sedan, the Chrysler 200". media.chrysler.com. 2010. Retrieved September 29, 2010.
  9. ^ a b c "All-new 3.6-litre V-6 Technical Specifications". Chrysler LLC. June 20, 2010. Retrieved August 29, 2010.
  10. ^ "3.6-litre V-6 General Specifications" (PDF). Chrysler LLC. February 15, 2011. Archived from the original on July 8, 2011. Retrieved February 15, 2011.
  11. ^ a b "Pentastar V-6 Set to Roll Out Across Broad Range of New Chrysler..." Prnewswire.com (Press release). Michigan. Retrieved May 13, 2011.
  12. ^ Bruce, Chris (September 2, 2015). "FCA's Pentastar V6 gets more power, efficiency for 2016". Autoblog. Archived from the original on May 10, 2017.

External links

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