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:



Crysler 300c SRT-8:



Jeep Grand Cherokee SRT-8:



6.4L HEMI in Grand Cherokee:



Dodge Charger SRT-8:



Dodge Magnum SRT-8:



HEMI engines are Adored for their growl which is one of its kind!!

Early Impact from Automobiles

At the age of 4, "The School Van" is the earliest of the automobile that i can hunt down in my memory. It was a boxy van called as Standard(An early Indian company which no longer exists) which seats 15 but the one i went to School carried about 40. It had a diesel engine which sounded as if a cow or a horse was tortured brutally and and gave out so much of smoke as if a forest had been burnt down to ashes. And in same era, the common Autorickshaws powered by a two stroke engine. Had fun traveling in it except while cornering which gave me a feeling that it would topple since it has only three wheels. And then a steep transition after about two years at the age of 6(In Oman)... Glittering cars... Air Conditioned interiors.. cruising speeds of about 100 to 120Km/hr... exhaust pipes with visually no smoke from it.. I wondered if i was a dream! But I realised it was Quality. Twelve years of exotic cars, buses and trucks. Then voila! I was back to Chennai, the Detroit of India! Amazed at the cars. The quality was instilled in them which lacked at the earlier stages. During the young years of my life, curiosity about the World of Automobile Engineering continuously urged me to focus my career in that field... how does the engine roar?? How does the wheel turn when the steering is rotated?? What is the long shaft spinning under the truck??.... and yes i did with a big smile and a high enthusiasm Venture to do Bachelor's in Automotive Engineering. To learn the evolution and wonders and the depth of the Ocean of this Wonderful Machine on Earth!