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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 ...
1993–97 3.5 L engines are a non-interference design, in which the valves will not collide with the pistons in the event of a timing belt failure. The 1998–2001 3.2 L, the 1998–2010 3.5 L, and the 2007–2011 4.0 L engines are interference designs.
The 3.3 has a timing chain, and is an interference engine meaning that the valves will collide with the pistons in the event of a timing chain failure. Vehicles using the 3.3 include: 1990–1993 Dodge Dynasty, Chrysler New Yorker, Chrysler Imperial, (replaced the 3.0 L Mitsubishi 6G72 engine) 1990–2010 Chrysler minivans
The new 3.6 L Pentastar V6 engine replaced the 2.7 L V6 engine as well as the 3.5 L High Output V6 engine. The 3.6 L Pentastar has variable valve timing and uses a timing chain instead of a belt. The exhaust manifold is cast directly into the cylinder head. [25]
Variable exhaust valve timing (the LW2 engine only had variable intake valve timing) Specially-developed fuel injectors. New pistons with pentroof-style centre-domes and valve eyelets for a higher compression ratio of 12.2:1 (compared to 10.2:1 for the dual fuel engine). A new fuel rail and a new LPG fuel filter. Applications:
However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR). Cooled EGR components are exposed to repeated, rapid changes in temperatures, which can cause coolant leak and catastrophic engine failure. [9] [10] Unlike spark-ignition engines, diesel engines are not limited by the need for a contiguous ...
While all models include a 3.6 L Pentastar V6 gasoline engine producing 290 hp (294 PS; 216 kW) and 257 lb⋅ft (348 N⋅m; 36 kg⋅m) (now assisted by the eTorque Mild Hybrid system), Overland and Summit models will also offer the 5.7 L Hemi V8 gasoline engine with Multi Displacement System (MDS) rated at 357 hp (362 PS; 266 kW) and 390 lb⋅ ...
The High Value engine family from General Motors is a group of cam-in-block or overhead valve V6 engines.These engines feature cast iron blocks and aluminum heads, and use the same 60° vee bank as the 60° V6 family they are based on, but the new 99 mm (3.90 in) bore required offsetting the bores by 1.5 mm (0.059 in) away from the engine center line.