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For 2015, Chrysler introduced an all-new high performance supercharged variant of the Hemi engine, called the Hellcat (named after the Grumman F6F Hellcat). [26] It features the same 4.09 in (103.9 mm) bore as the 6.4 L Hemi and the same 3.578 in (90.9 mm) stroke as the 5.7 L, giving it a total displacement of 6,166 cc (6.2 L; 376.3 cu in). [ 26 ]
Chrysler's Multi-Displacement System (MDS) is an automobile engine variable displacement technology. It debuted in 2005 on the 5.7 L modern Hemi V8.Like Mercedes-Benz's Active Cylinder Control, General Motors' Active Fuel Management, and Honda's Variable Cylinder Management, it deactivates four of the V8's cylinders when the throttle is closed or at steady speeds.
2003–present: Hemi. 5.7L Hemi - The smallest modern Hemi engine, called the Eagle, introduced in 2002. 6.1L Hemi - A larger modern Hemi, 2004–2010. 6.4L Hemi - A larger bore modern Hemi engine, called the Apache, introduced in 2011. 6.2L Hemi - A supercharged Hemi engine, called the Hellcat, introduced in 2014.
The 5.7-liter Hemi VVT V8 returned with 360 hp (268 kW; 365 PS) and 390 lb⋅ft (529 N⋅m; 54 kg⋅m) of torque, which features the 545RFE five-speed automatic. The Hemi V8 also comes with a "fuel-saver" (cylinder deactivation) mode. This feature is primarily used when the vehicle is cruising at constant speeds on level ground.
A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...
Both performance coupes have a great price and a peppy naturally aspirated 2.4-liter flat-four engine with 228 horsepower and 184 pound-feet of torque. But Car and Driver narrowly picked the BRZ ...
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