| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 477118000 | Engine (coast) braking | 6 |
| 20090105044 | METHOD AND AN APPARATUS FOR CONTROLLING SHIFTING OF AN AUTOMATIC TRANSMISSION - A method of controlling an automatic transmission includes determining whether a coast-down control condition is met, and performing coast-down control if the condition is met. The coast-down control includes selectively downshifting, such that engine speed is maintained above a fuel-cut threshold speed. The coast-down control condition may include a throttle opening being below a threshold opening, a shift-speed being higher than or equal to a threshold shift-speed, and a road slope being smaller than a predetermined slope. The method may also include determining whether a deceleration lock-up control condition is met, and performing deceleration lock-up control, including engaging a lock-up clutch, if the condition is met. The deceleration lock-up control condition may include a throttle opening being below a threshold opening, a shift-speed being below a threshold shift-speed, a brake not being operated, and a difference between an engine speed and a turbine speed being smaller than a reference value. | 04-23-2009 |
| 20090118095 | CONTROLLER OF POWER TRANSMISSION - To provide a control system for a power transmission system capable of speed change control in conformity of a deceleration demand. | 05-07-2009 |
| 20100137102 | Retarding control for a machine - The present disclosure is directed toward a method for dissipating power through a machine. The method may include directing power into a power system of the machine. The method may further include controlling a parasitic load of the power system to increase dissipation of the power system, the controlling of the parasitic load being a function of a power dissipation limit of the power system. | 06-03-2010 |
| 20100216596 | METHOD FOR OPERATING A DRIVE TRAIN OF A VEHICLE DURING TRAILING THROTTLE OPERATION - A method for operating a vehicle drive train during a coasting operation. The drive train has an internal combustion engine, an electric machine, a transmission, and a shift element, with a variable transmission capacity, located between the electric machine and a drive wheels. The electric machine is located in the flow of power between the combustion engine and the transmission. The output torque to be delivered to the wheel is a function of the delivery capacity of the shift element which is adjusted in a controlled manner. During the process of shutting down the combustion engine, the speed of the electric machine is adjusted while maintaining at least a partial engagement of the shift element and the speed of the combustion engine is reduced to zero with the electric machine. | 08-26-2010 |
| 20100248896 | SHIFT TO DIRECT DRIVE DURING COAST CONDITIONS - A method and system for automated manual transmission shift methodologies for coasting conditions are disclosed. A coast condition is detected in a vehicle having a transmission that couples prime mover power from a transmission input to a transmission output at a plurality of different gear ratios. A target gear ratio is selected based on the power loss attributes associated with each gear ratio. Each gear ratio is associated with a power loss attribute indicative of a power loss between the transmission input and transmission output when prime mover power is coupled from the transmission input to the transmission output using that gear ratio. The transmission is shifted from a current gear ratio to the target gear ratio if the target and current gear ratios differ. By selecting the target gear ratio, vehicle fuel efficiency is improved, while keeping the vehicle under constant prime mover braking or continuous prime mover control. | 09-30-2010 |
| 20120184407 | METHOD AND MEANS FOR CONTROLLING THE DOWNSHIFTING - A method is provided for controlling a downshifting of a transmission of a motor vehicle in coasting mode from a staring gear into a target gear. The method includes, but is not limited to estimating an output torque exerted by the engine with starting gear engaged, calculating a set point torque by means of the output torque and the transmission ratios of starting and target gear, and activating the engine with engaged target gear subject to the presetting of the calculated set point torque. | 07-19-2012 |
