HEMI refers Hemisphericalcombustionchambers, showing the top of the combustion chamber is hemispherical. This form of engine can effectively improve intake efficiency. In the mid-1930s, Chrysler’s engineers began developing “FirePower” V8 engine, at the time, this design applies only to foreign-made cars. But Chrysler’s engineers was to achieve the application of this technology in volume production car.
As a result of hemispherical combustion chamber design, so that the valve can be disposed in the cylinder head, the valve and the area has been increased. To be better able to exert a high intake efficiency brought advantages, the use of two spark plugs per cylinder to ensure sufficient ignition energy.
the HEMI engine production has also been engaged in self-improvement in the global car companies are in the promotion of energy-saving environmental protection today, Chrysler also joined MDS as this engine (variable row amount) system, which can shut down four cylinders when cruising, while ensuring the performance of a good solution to fuel economy issues. Mounted on the Grand Cherokee HEMIV85.7L engine maximum power of 259kW (352Ps), the maximum torque of 520Nm. High-performance Grand Cherokee SRT8 HEMIV86.4L mounted engine, the maximum power is reached 344kW (468Nm), maximum torque of 624Nm.
As a former world top ten engines, the pride of Chrysler, HEMI engine is used Chrysler’s multiple models, including the Chrysler 300C, Grand Cherokee, Dodge Charger and so on.
