公开(公告)号：US20170102068A1

公开(公告)日：2017-04-13

申请号：US15207237

申请日：2016-07-11

Applicant: TUSKEGEE UNIVERSITY

Inventor： ShaoWei GONG

IPC: F16H61/02 ,  F16H3/089 ,  B60R16/023

CPC classification number: F16H3/089 ,  F16D11/14 ,  F16D23/04 ,  F16D23/06 ,  F16D27/02 ,  F16D27/118 ,  F16D41/088 ,  F16D2023/0643 ,  F16D2023/0687 ,  F16H3/10 ,  F16H2063/3093

Abstract: A case-emphasized propulsion method improves vehicle fuel efficiency. The ratio of the most-used speed to the most-desired speed of an IC engine is employed to control the engine to always run at its optimal working state with an efficient single-stage gear transmission. The propulsion method used with different brands of IC engines demonstrates a reduction in fuel consumption between 5 and 39%. An n-ratio automatic single-stage gear transmission implements the propulsion method. The transmission design executes the proposed propulsion method as well a continuous transmission, but it can also increase the propulsion efficiency about 8 to 18% when applied to replace traditional automatic transmissions or continuously variable transmissions in vehicle drivetrains.