Chrysler Pentastar engine explained

Pentastar engine
Manufacturer:Stellantis North America
Production:–present
Predecessor:Chrysler SOHC V6
Chrysler 3.3 & 3.8 engine
Chrysler LH engine
Chrysler Powertech V6
Configuration:60° V6
Displacement:2997cc
3239cc
3604cc
Bore:912NaN2 (3.2L)
962NaN2 (3.6L)
Stroke:762NaN2 (3.0L)
832NaN2 (3.2L & 3.6L)
Block:Aluminium
Head:Aluminium
Valvetrain:DOHC 4 valves per cyl. (24 total)
Timing:Timing chain
Compression:10.7:1 (3.2L)
10.2:1 (3.6L)
11.3:1 (Upgrade)
Fuelsystem:Sequential MPFI
Fueltype:Gasoline
E85
Oilsystem:Wet sump
Coolingsystem:Water-cooled
Power:2300NaN0 (3.0L)
2710NaN0 (3.2L)
275- (3.6L)
Torque:2100NaN0 at 4400 rpm (3.0L)
2390NaN0 at 4400 rpm (3.2L)
251- (3.6L)
Length:503mm

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 power ratings in different vehicles, and has higher output 3050NaN0 and 268lb·ft 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 420and, 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
2997cc912NaN2762NaN22013– 1720NaN0 at 6350 rpm2850NaN0 at 4400 rpm
S3239cc832NaN22014– 2710NaN0 at 6750 rpm (Cherokee)2390NaN0 at 4400 rpm
G 3604cc[9] [10] 962NaN2832NaN2 2010– 2830NaN0 at 6400 rpm (Avenger, Grand Caravan, Journey, Town & Country, 200, Routan)2600NaN0 at 4800 rpm
2900NaN0 at 6350 rpm (Grand Cherokee, Durango)
2920NaN0 at 6350 rpm (Charger, 300)[11]
3050NaN0 at 6350 rpm (Challenger) 2680NaN0 at 4800 rpm
2012– 2850NaN0 at 6400 rpm (Wrangler)2600NaN0 at 4800 rpm
2013– 3000NaN0 at 6350 rpm (Charger Rallye Group, 300S) 2640NaN0 at 4800 rpm
3050NaN0 at 6400 rpm (RAM 1500)2690NaN0 at 4175 rpm
2015– 2016 2950NaN0 at 6350 rpm (Chrysler 200)2620NaN0 at 4250 rpm
2012- 2800NaN0 at 6350 rpm (Fiat Freemont)3420NaN0 at 4350 rpm
2830NaN0 at 6600 rpm (Lancia Voyager)3440NaN0 at 4000 rpm
2860NaN0 at 6350 rpm (Lancia Thema)3400NaN0 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.

Applications

See also

External links

Notes and References

  1. FCA US LLC Manufacturing Operations . media.chrysler.com . 11 May 2015.
  2. Web site: Joseph . Noah . Chrysler's flexible new Pentastar V6 . Autoblog.com . April 13, 2009 . 2010-09-29.
  3. Web site: NY Show: Chrysler LLC Introduces All-new Pentastar V-6 Engine . Redletterdodge.com . 2010-09-29 . https://web.archive.org/web/20090416211715/http://www.redletterdodge.com/2009/04/08/ny-show-chrysler-llc-introduces-all-new-pentastar-v-6-engine/ . April 16, 2009 . dead .
  4. Web site: 2016 Pentastar V6 adds new VVT, cooled EGR. https://web.archive.org/web/20151105035742/http://articles.sae.org/14322/ . 2015-11-05. dead .
  5. Web site: 2011 Fiat Investor Site . Fiatspa.com . 2011-12-07.
  6. Web site: 2011 Dodge Challenger cars . allpar.com . 2010-10-26.
  7. Web site: Chrysler Pentastar V6 Engines for 2010 and Beyond . allpar.com . November 16, 2020 . January 13, 2023.
  8. Web site: Chrysler Brand Releases Information Regarding New 2011 Mid-sized Sedan, the Chrysler 200 . 2010-09-29 . 2010 . media.chrysler.com.
  9. Web site: All-new 3.6-litre V-6 Technical Specifications . August 29, 2010 . June 20, 2010 . Chrysler LLC.
  10. Web site: 3.6-litre V-6 General Specifications . February 15, 2011 . February 15, 2011 . Chrysler LLC . https://web.archive.org/web/20110708152126/http://www.media.chrysler.com/dcxms/assets/specs/Pentastar_engine_spec.pdf . July 8, 2011 . dead .
  11. Pentastar V-6 Set to Roll Out Across Broad Range of New Chrysler... . Michigan . Prnewswire.com . 2011-05-13.
  12. Web site: FCA's Pentastar V6 gets more power, efficiency for 2016 . 2015-09-02 . Autoblog . Bruce . Chris . 2017-05-10 . https://web.archive.org/web/20170510165537/https://www.autoblog.com/2015/09/02/fca-pentastar-v6-2016-upgrades/ .

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