Development of high efficiency ball-bearing turbocharger

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6373997

Miyashita, K; Kurasawa, M; Matsuoka, H; Ikeya, N

Turbochargers have become very popular on passenger cars since the first mass-produced turbocharged passenger cars were put on market in Japan in 1979. Turbo lag is one of the most serious problem since the first mass-production started. Several new technologies such as a variable geometry turbocharger, ceramic turbocharger, etc. have been introduced to improve acceleration performance. A variable geometry turbocharger changes the area of gas flow passage and increases exhaust gas speed at low engine speed. A ceramic turbocharger reduces inertia moment of a turbine wheel and shaft. Turbocharger mechanical efficiency has equal importance as compressor efficiency and turbine efficiency. This paper describes the test results of ball bearing turbochargers.

• Research Organization: Ishikawajima-Harima Heavy Industries Co. Ltd.
• OSTI ID: 6373997
• Report Number(s): CONF-870204-
• Resource Relation: Conference: Society of Automotive Engineers international congress and expo, Detroit, MI, USA, 23 Feb 1987; Other Information: 870354
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
TURBOCHARGERS
DESIGN
ENERGY EFFICIENCY
MECHANICAL EFFICIENCY
AUTOMOBILES
CERAMICS
COMPRESSORS
EVALUATION
GAS FLOW
GEOMETRY
MOMENT OF INERTIA
PERFORMANCE
TURBINES
VELOCITY
EFFICIENCY
ENGINES
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
MATHEMATICS
SUPERCHARGERS
TURBOMACHINERY
VEHICLES
330101* - Internal Combustion Engines- Spark-Ignition