Caution! Abyssmal mind!: HEMI

The HEMI engine as the name indicates has a hemispherical Combustion chamber which provides an excellent way of better induction of the air-fuel mixture from the inlet and to provide larger valves. HEMI engines are provided in the popularly known American Muscle cars which follows a tradition of Big , Loud and Powerful! The first HEMI engine ways back to 1951 which was produced Chrysler it was a v8 producing 180 bhp at 2500 rpm. In the initial stages it was marketed as Fire Power untill when it it was revived in the year 1964 when it was designated as HEMI. The present day HEMI how ever does not hav a hemispherical combestion chamber it is relatively flatter and used an advanced technology such as coil over plug distributorless ignition system, dual Spark plug per cylinder, Variable valve timing technology and Variable displacement technology. The distributorless ignition system was used to achieve a better spark tining capability replacing the conventional distributor and contact breaker arrangement. The dual spark plug was introduces to hav a consistent flame growth and ensure complete combustion. Variable valve time timing ensured that a proper combination of the inlet and outlet timing according to the various driving styles to provide maximum efficiency and reduce emissions. in the Earlier models all the 8 cylinders would remain active at all conditions leading to loss of efficiency and fuel economy, but in the modern HEMI it features Multiple Displacement System(MDS) or Variable Displacement Technology which activates the required number of cylinders out of the 8 according to power requirements this lead to and increase in efficiency by 4% and greatly reducing emissions. The present HEMI engines are available as 6.1L, 425hp and 6.4L. these engines are featured in select models.

Dodge Challenger SRT-8: