Abstract: A electro-mechanical transmission includes an electrical section and a mechanical transmission to provide an infinitely adjustable power flow through the transmission. The mechanical transmission includes a planetary gearing mechanism having three planetary gear sets and five members which interact with the electrical section and a gear change mechanism to infinitely adjust output speed.
Type:
Grant
Filed:
August 4, 1997
Date of Patent:
June 29, 1999
Assignee:
Caterpillar Inc.
Inventors:
Alan R. Coutant, Stephen C. Garnett, Eric D. Stemler