IGTC-116 Recent Advancements and Problems in Turbochargers for Passenger Cars(Organized Session VI AUTOMOTIVE TURBOCHARGERS)

概要

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Turbochargers for passenger cars have been developed mainly for the purpose of improving vehicle transient response. Today, turbocharged automotive engines are required to provide good fuel economy as well as low emission characteristics. One advantage of turbocharged engines over naturally aspirated engines of equivalent power output is excellent fuel economy under a light load condition such as the Japanese 10-mode or LA4 mode operation. However, under high load and high engine speed conditions, a turbocharged engine requires a leaner mixture in order to reduce the specific fuel consumption. To meet this requirement, it is necessary to improve the heat resistance of turbochargers and the anti-knock characteristics of turbocharged engines. Further, to achieve low emission levels under a cold start condition, the thermal capacity of the turbocharger should be reduced and a heat-insulated exhaust manifold system should also be developed.
公益社団法人日本ガスタービン学会の論文