Commmon Rail Direct Injection System

Fuel Injection system- Focus on CRDi System

Basics of Common Rail System

What is Common Rail?– Common Rail is a– Electronic Controlled– Diesel Fuel Injection System

Special Characteristics :• Injection Pressure is produced and governed relatively

independent of the Engine Speed and can be selected freely within a wide range.

• Injection begin and Injection Quantity can be freely selected (EDC function)

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Fuel Injection System Technology Drivers05/03/23

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Market Driver- Engine power & Speed05/03/23

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Emission reduction strategies

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Technology demands on FIE

• High pressure potential (> 2000 bars)• Realization of the “ideal” rate of injection via pressure modulation alone• Capability of realizing staged (boot) as well as pilot injection where pilot

is separated from the main injection• Flexibility of selecting start of injection as well as end of injection• Moderate initial rise of main injection• Sharp cut off of the injection end• Flexibility of selecting peak injection pressure• Provide option to automatically change rate shape according to engine speed and load

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Engine with CRS05/03/23

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Combustion Phenomenon

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Cam Driven FIE

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System architecture of CRS

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Injector Construction

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Injector operating cycle

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Components of High Pressure Rail

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CRS- Key Differentiators

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Common Rail – FIE with a new concept

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Possibility of Multiple Injections05/03/23

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CDRI Indian Applications

• Mahindra XUV 5OO CRDe• Tata Safari DICOR• Hyundai Verna CRDI• VW Polo TDI• FIAT Quadrajet 1.3 L• Renault 1.5L K9K Duster• Maruti 1.3L Multijet

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Thank You !

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