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Reciprocating internal combustion engine From Wikipedia, the free encyclopedia
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.
| Pentastar engine | |
|---|---|
| |
| Overview | |
| Manufacturer | Stellantis North America |
| Production | 2010–present |
| Layout | |
| Configuration | 60° V6 |
| Displacement | 3.0 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 bore | 91 mm (3.58 in) (3.2L) 96 mm (3.78 in) (3.6L) |
| Piston stroke | 76 mm (2.99 in) (3.0L) 83 mm (3.27 in) (3.2L & 3.6L) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves per cyl. (24 total) |
| Valvetrain drive system | Timing chain |
| Compression ratio | 10.7:1 (3.2L) 10.2:1 (3.6L) 11.3:1 (Upgrade) |
| Combustion | |
| Fuel system | Sequential MPFI |
| Fuel type | Gasoline E85 |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 230 hp (172 kW) (3.0L) 271 hp (202 kW) (3.2L) 275–305 hp (205–227 kW) (3.6L) |
| Torque output | 210 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 | |
| Length | 503 mm (19.8 in) |
| Chronology | |
| Predecessor | Chrysler SOHC V6 Chrysler 3.3 & 3.8 engine Chrysler LH engine Chrysler Powertech V6 |
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 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.
| 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 |
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) |
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