By IMechE

ISBN-10: 0081000332

ISBN-13: 9780081000335

The destiny industry forces and environmental issues within the passenger vehicle and advertisement motor vehicle quarter suggest extra stringent engine downsizing is way extra usual. hence, novel platforms are required to supply boosting ideas together with hybrid, electric-motor and exhaust waste strength restoration structures for prime potency, reaction, reliability, toughness and compactness.

The present emission legislation and environmental traits for lowering CO2 and gasoline intake are the main industry forces within the land and marine delivery industries. the interior combustion engine is the most important product and downsizing, potency and economic climate are the riding forces for improvement for either spark ignition (SI) and compression ignition (CI) engines in either markets. destiny industry forces and environmental concerns for transportation, in particular within the passenger vehicle, advertisement motor vehicle and the marine sectors suggest extra stringent engine downsizing.

This overseas convention is the most recent within the hugely winning and prestigious sequence held on a regular basis given that 1978. those complaints from the Institution's hugely winning and prestigious sequence handle present and novel elements of turbocharging platforms layout, boosting suggestions for engine downsizing and enhancements in potency, and current the most recent study and improvement during this growing to be and cutting edge zone.

  • Focuses on boosting suggestions together with hybrid, electric-motor and exhaust waste strength restoration systems
  • Explores the present desire for top potency, reliability, toughness and compactness in restoration systems
  • Examines what new platforms advancements are underway

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Additional resources for 11th International Conference on Turbochargers and Turbocharging: 13-14 May 2014

Example text

Therefore turbochargers can reduce weight and friction loss of the engines, resulting in improvement of fuel efficiency and reduction of CO2. In particular European automotive manufacturers have been increasingly employing smaller engines for improvement of fuel efficiency. Therefore use of turbochargers has been growing, which results in growth of the turbocharger market. An automotive turbocharger uses exhaust gas to rotate the turbine, and then the compressor bladed wheel, the shaft of which is connected directly with the shaft of the turbine, is driven.

In this study, Numerical fluid simulations of twin-entry-scroll with whole turbine blade were conducted to investigate the flow phenomena under engine exhaust gas pulsation. Two features of flow phenomena generating loss were confirmed. Exhaust gas is induced into the front and rear scrolls alternately and leakage inflow from one side to no-entry side is occurred. Flow separation at blade hub side is occurred by the distorted inflow from the scroll at the partial admission of rear side. New scroll was designed to reduce alternating leakage inflow and flow separation at blade hub.

The additional energy consumed by the AC compressor offsets any gains from earlier ignition timing. Only at top speed operation does low temperature intercooling show promising results. Here, the engine is operating in enriched mode with regular intercooling to thermally protect the turbocharger turbine. With cooler intake air, the mixture can be leaned out, which overcompensates the power needed to operate the modified AC system. An improvement in BSFC of approx. 5% was achieved. For the delivery vehicle, improvements in BSFC can be achieved at vehicle speeds of 160km/h upwards.

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11th International Conference on Turbochargers and Turbocharging: 13-14 May 2014 by IMechE


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