High Efficiency Supercharger Increases Engine Output, Reduces Fuel Consumption Through Computer Control Toyota Motor Corporation

Format:

Conference/Event

Author/Creator:

Kato, Shinichi, author.

Conference Name:

Passenger Car Meeting and Exposition (1986-09-22 : Dearborn, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

Efficiency of a supercharger mainly depends on the clearances between the rotors and the housing, but it has hitherto proved impossible to reduce the clearances without a strong possibility of seizure. A two lobe Roots type supercharger has been developed which overcomes this problem by means of a special resin coating on the rotors. As a result, an increase of 18% in volumetric efficiency of the supercharger is achieved. Engine torque is increased by 30%.Drive power loss resulting from the operation of a supercharger at partial load when boost was not required caused fuel consumption to increase by about 10%. An electro magnetic clutch and an air by-pass valve controlled by the onboard computer were used in the new supercharger to eliminate this fuel economy loss.A passenger car equipped with the new supercharged 2-liter engine demonstrated about the same acceleration performance as a 3-liter class car without sacrificing fuel economy

Notes:

Vendor supplied data

Publisher Number:

861392

Access Restriction:

Restricted for use by site license