Powershiftable multistage transmission

Details Powershiftable multistage transmission Powershiftable multistage transmission

2009-09-23

2010-10-26

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S284000

Reexamination Certificate

active

07819772

ABSTRACT:
A powershiftable multistage transmission (LMG) between an input shaft (an), which can be connected to a first transmission shaft (1), and an output shaft (ab=2) as a second transmission shaft, comprising two shaft-lines (WS1and WS2) which are arranged in parallel in a transmission housing (0), three transfer gears (SG) between these shaft-lines, three planetary gears (PG) each with a sun gear (So), a ring gear (Ho) and a planet-carrier (Pt) with single planets, and a plurality, preferably five, shifting elements (SE). With only five shifting elements eight forward gears and one reverse gear can be switched. The six gear elements have ratios which can be designed easily even if the total ratio range is somewhere between 7<φges<9. Due to the distribution of the gear elements on two shaft-lines, the transmission gearbox has a short length and is suitable for front-cross-applications as well as inline-applications. All shifting elements can be easily fed with oil to control them. With only four shifting elements the transmission still has five well stepped forward gears and one reverse gear. The gear-trains47and58are very suitable gear elements to link to an electric motor to obtain an advantageous hybrid driveline.

REFERENCES:
patent: 5167592 (1992-12-01), Sakamoto
patent: 2003/0100395 (2003-05-01), Haraiwi
patent: 2006/0142111 (2006-06-01), Park
patent: 2006/0266144 (2006-11-01), Schafer et al.
patent: 2009/0082167 (2009-03-01), Wittkopp et al.
patent: 10 2004 001278 (2005-08-01), None
patent: 10 2005 018 804 (2006-07-01), None
patent: 10 2005 002 337 (2006-08-01), None
patent: 0 094 464 (1983-11-01), None
patent: 2000-304110 (2000-11-01), None
patent: 2000-310301 (2000-11-01), None
patent: WO 2005/050060 (2005-06-01), None
patent: WO 2006/074707 (2006-07-01), None
International Search Report dated Aug. 1, 2008 with English translation of relevant portion.
Written Opinion of the International Searching Authority, Form PCT/ISA/237 mailed Aug. 1, 2008.

Affiliated with

Also associated with

Rating

Powershiftable multistage transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Powershiftable multistage transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powershiftable multistage transmission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4167501