Stellantis Media Site Engines/Powertrain                                                Contact:                                                                                                                                                Engines/Powertrain                                                                                      While Chrysler engineers develop a new generation of clean, efficient, powerful engines for today's vehicles, researchers are working on technology for the next generation of vehicles.   In 2002, the company revisited a famous engine from its past, the HEMI, developing a modern, high-performance, clean and efficient engine, the 5.7 liter HEMI Magnum V-8.   The company continues to work on advanced transmissions, such as the EMAT, which combines 10 percent better fuel efficiency with the performance of an automatic.