advances in ic engines

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [1] ENGG PAPER PRESENTATION ON By Sathish reddy ADVANCES IN IC ENGINES

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [2] INTRODUCTION :- MECH Carbondioxide emissions are directly proportional to fuel consumption New technology in various IC engine systems, such as the fuel system, ignition system, designs of crankshafts, valves, pistons etc.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [3] LATEST TECHNOLOGIES IN INTERNAL COMBUSTION ENGINES:- MECH Variable Valve Timing :- The camshafts on some Ferrari engines are cut with a three-dimensional profile that varies along the length of the cam lobe. The shaft spins just like a regular camshaft -- but by gradually sliding the camshaft laterally as the engine speed and load increase, the valve timing can be optimized.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [4] VALVE TRONIC ENGINES: MECH The Valvetronic engine is the world's first engine without a throttle butterfly. Valvetronic varies with the timing and the lift of the intake valves. This valvetronic engines allows the engine to breathe more freely, fuel consumption is reduced by 10%. Valvetronic reduces maintanance costs, improves cold start behavior, lowers exhaust emissions, and provides a  smoother running engine.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [5] NEW TEFLON PADS PISTONS:- MECH Teflon pad Teflon padded pistons will eliminate cylinder liner water jacket cavitation corrosion and increase cylinder liner life and hence engine life. The Cummins V28 engines have used a new technology for their pistons- they have two teflon pads and the pistons also incorporate a cutback headland. Improved oil consumption Increased piston and cylinder liner life

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [6] VARIABLE COMPRESSION RATIO: MECH The Saab Variable Compression : Eccentric crankshaft engine: optimum compression ratio of 14:1 The compression ratio can be lowered to 8:1 at high load. The motor provides adjustment in 0.1s for decreasing compression ratio and 0.5s for increasing ratio.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [7] FAST SOLENOID COMMON RAIL:- MECH which enabl multiple injection events, increased injection pressure capability and a new closed loop control system known as Accelerometer Pilot Control (APC). and the system is correctly calibrated.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [8] VARIABLE MOTION ENGINE TECHNOLOY: MECH These images show the engine technology that uses a pivoted lever arm between the connecting rod and crankshaft.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [9] CASE STUDY: MECH The case study was carried out at Cummins India Ltd. Pune. 1. Thermography applied to I.C. Engine Uses of Thermography: Abnormal temperature rise at various points in the engine can be detected Various leakages can be detected Further enhancements to the engine can be decided based on the results.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [10] CUMMINGS Big cam engine: MECH Fuel consumption in a Big cam engine is comparatively less as compared to the small cam engine. Exhaust emissions are lower. Power derived from big cam engine is more as compared to the small cam engine due to better combustion and higher thermal efficiency. Lower weight to power -ratio. Big camshaft diameter leads to lesser contact stresses due to larger contact radius .

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [11] COST REDUCTION OF DISEL ENGINE EXHAUST EMISSIONS: MECH Fuel injection system performance also has a significant impact on emission formation. Fuel injection timing, injection duration, system geometry, and nozzle configuration are all factors that contribute to emission formation. . Piston crown shape and the rate of heat transfer greatly affect emission formation. Flat-top pistons may be replaced with "dish" or "bowl" pistons.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [12] CONCLUSION :- MECH This technology makes use of the fact that change in the compression ratio in the cylinder improves its performance . The maintenance and cost of investment also decreases.

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [13] MECH QUIRE’S …. ? ? ?

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SRI VENKATESWARA ENGG. COLLEGE ENGG ENGG ENGG PRESENTED BY - SATHISH REDDY TECHNICAL PAPER PRESENTATION- 2011 [14] THANK U… MECH