SUV Mahindra Scorpio's fuel efficient and quieter mHAWK Common Rail Diesel Engine

Published: 24th July 2009
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Check out the powerhouse SUV with Common Rail Diesel Engine - Mahindra Scorpio

Mahindra Scorpio, the SUV model from the leaders in Utility Vehicles in India Mahindra & Mahindra, features the 2.2 litre, 4-cylinder mHAWK diesel engine. It is this mHAWK engine that makes the Scorpio the powerhouse that it is. It propels the Scorpio from 0 to 60 in 5.7 seconds producing a whopping 120 bhp of power. The mHAWK engine of Scorpio is a common Rail Diesel Engine (CRDe).

The Common Rail Diesel Engine works on the 'Common Rail Direct Fuel Injection' technology. It consists of a high-pressure fuel rail feeding individual solenoid valves. The more recent Third Generation common rail diesels feature piezoelectric injectors for increased precision, with fuel pressures up to 1,800 bars or 26,000 psi.

The Common Rail Diesel engine has two main advantages over the conventional diesel engine. It helps in lowering down exhaust emissions to a great extent and it also lowers down engine noise.

A fuel rail is essentially a pipe (resembling a rail) to which the fuel is delivered and maintained at a very high pressure of about 1800 bar. This fuel is then delivered to individual fuel injectors on internal combustion engine. During the firing sequence of a particular cylinder, the high pressure, electronically operated injector will be opened and fuel with a pressure of about 1800 bar is injected in to the cylinder. This leads to improved atomization of the fuel in the cylinders. This high pressure fuel cloud leads to complete combustion of the fuel, thus avoiding emission.

The rapid speed at which the injectors can switch makes it possible to reduce the intervals between injections and split the quantity of fuel delivered into a large number of separate injections for each combustion stroke. Diesel engines become even quieter, more fuel efficient, cleaner and more powerful.

Check out the powerhouse SUV with Common Rail Diesel Engine - Mahindra Scorpio

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