Invention Grant
- Patent Title: Methods for regulating the gear ratio of an automatic power-branched transmission, and automatic power-branched transmission
- Patent Title (中): 用于调节自动分支变速器的变速比的方法和自动动力分配变速器
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Application No.: US10503170Application Date: 2003-01-27
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Publication No.: US07493203B2Publication Date: 2009-02-17
- Inventor: Franz Bitzer , Christian Lauinger , Michael Reuschel , Martin Vornehm , André Teubert , Manfred Homm , Eric Müller , Reinhard Stehr , Bernhard Walter
- Applicant: Franz Bitzer , Christian Lauinger , Michael Reuschel , Martin Vornehm , André Teubert , Manfred Homm , Eric Müller , Reinhard Stehr , Bernhard Walter
- Applicant Address: DE Bühl
- Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
- Current Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
- Current Assignee Address: DE Bühl
- Agent Alfred J. Mangels
- Priority: DE10205059 20020207
- International Application: PCT/DE03/00203 WO 20030127
- International Announcement: WO03/067127 WO 20030814
- Main IPC: B60K23/00
- IPC: B60K23/00

Abstract:
A method for regulating or controlling the transmission ratio of an automatic power-branched transmission. Power is transmitted through a shaft driven by an engine, a variable speed drive, a gear transmission, a driven shaft, and at least two control clutches. The variable speed drive and the gear transmission are connected to each other in such a way that the regulating range of the variable speed drive is traversed in one direction within a first range of transmission ratios, and is traversed in the opposite direction within a second range of transmission ratios during traversing of the entire range of transmission ratios. The shifting strategies result in reduced wear of the endless belt device and allow for comfortable changing between the transmission ratio ranges.
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