Development of High Efficiency Ball-Bearing Turbocharger

Kazuya Miyashita; Minoru Kurasawa; Hideaki Matsuoka; Nobuyuki Ikeya; Fusayoshi Nakamura

doi:10.4271/870354

1987-02-01

Development of High Efficiency Ball-Bearing Turbocharger 870354

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 developed at our company.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Development of High Efficiency Ball-Bearing Turbocharger 870354

SAE MOBILUS