A perfect shifting process has no power disturbances, and the transmission energy transfers smoothly between the on-coming clutch and the off-going clutch15,16. The research and test show that the input torque, speed, oil temperature and some factors that affect the characteristics of the hydrauli...
SHIFTING APPARATUS FOR A CHANGE SPEED GEAR TRANSMISSIONCHARLES M. PERKINSTHOMAS V. MCNAMARA
In a certain speed stage shifting of an automatic transmission of a vehicle including a speed change gear mechanism including rotary members such as gears and gear carriers and hydraulically operated friction engaging brakes and clutches adapted to provide various speed stages according to selective enga...
A system and method of dithering speed and/or torque for shifting a transmission of a vehicle having an engine, a reversible, variable displacement hydraulic motor/pump which can be driven by the engine, a hydraulic accumulator supplied by said motor/pump, and at least one reversible hydraulic ...
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For a high overall efficiency, the basic transmission structure is of great importance. In [6], [7], [8], [9], it is demonstrated that multi-speed transmissions in electric vehicle powertrains will improve the corresponding efficiency and provide a wide range of traction torque. Among all ...
Controlling phase-shift on a transmission system affects primarily flow of active power. Although the phase-shifting transformer does not provide as much flexibility and speed as power-electronics based FACTS, it can be considered as a basic power flow controller. This is why it h...
1. A shifting apparatus for a transmission having a plurality of rotational shafts, a plurality of sets of speed change gears mounted on the rotational shafts, a shift fork movable in parallel with the rotational shafts, a sleeve arranged between the adjacent sets of speed change gears and oper...
A method of controlling hydraulic shift clutch actuators in an automatic speed change power transmission of the type having an electronic controller (TCU) for energizing a solenoid operated valve to control each hydraulic clutch actuator. A pressure sensor is disposed to sense the hydraulic pressure ...
A method of controlling hydraulic shift clutch actuators in an automatic speed change power transmission of the type having an electronic controller (TCU) for energizing a solenoid operated valve to control each hydraulic clutch actuator. A pressure sensor is disposed to sense the hydraulic pressure ...