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Class 477/67 - Fill and empty-type fluid units


Subclass of Class 477 - Interrelated power delivery controls, including engine control
Definition: Subject matter wherein the fluid torque transmitting means may be emptied
No. of patents: 6
Last issue date: 10/30/2007


NumberTitleIssue Date
7288046Torque converter slip control for multi-displacement engine
Prior to transitioning a multiple-displacement engine from a full-displacement engine operating mode to a partial-displacement engine operating mode, a base slip rate of a torque converter coupled to the engine engine is increased by a predetermined slip rate offset...
10/30/2007
7182708Final drive for electric motor to wheel
A final drive assembly for transmitting torque between an input and an output includes a compound gear assembly. The compound gear assembly includes at least three planetary gear trains and is in driving engagement with the input. Each planetary gear train of the at...
02/27/2007
6842673Engine engagement control for a hybrid electric vehicle
A control system is disclosed for minimizing the driveline vibrations in a hybrid electric vehicle during engine engagement. The control system involves determining the speed of the electric motor and taking the derivative of the speed to determine the acceleration....
01/11/2005
6812828Method and device for the automated actuation of a clutch
The invention relates to a motor vehicle comprising a drive motor and a gearbox with a device for automatically actuating a clutch in the drivetrain, and to a control method. According to said method, if the gear ratio is less than a threshold value and the actuatio...
11/02/2004
4641549Multiple stage gearbox shiftable under load
A change spur gear of reducer unit design features two paths of force. The first path of force comprises a unit which provides gearing to high speed, a hydrodynamic torque converter and, following it, a multiple shift gear. The second path of force compri...
02/10/1987
4347918Drive device for a vehicle
Particularly in the case of electric motor vehicle drives using an hydrodynamic torque converter or appropriate coupling there is present the problem of proper and reliable operation of the vehicle condition control through the use of comparatively modest...
09/07/1982
 
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