Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F16Engineering elements F16HGEARING

F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing

F16H61/0003Arrangement or mounting of elements of the control apparatus F16H61/0006Special features of electronic control units F16H61/0009Special features of hydraulic control units F16H61/0021Generation or control of line pressure F16H61/0025Supply of control fluid; Pumps therefore F16H61/0028using a single pump driven by different power sources F16H61/0031using auxiliary pumps F16H61/0059Braking of gear output shaft using simultaneous engagement of friction devices applied for different gear ratios F16H61/02characterised by the signals used F16H61/0202the signals being electric F16H61/0204for gearshift control F16H61/0206Layout of electro-hydraulic control circuits F16H61/0211characterised by low integration or small number of valves F16H61/0213characterised by the method for generating shift signals F16H61/0246characterised by initiating reverse gearshift F16H61/0248Control units where shifting is directly initiated by the driver F16H61/0251Elements specially adapted for electric control units F16H61/0262the signals being hydraulic F16H61/0265for gearshift control F16H61/0267Layout of hydraulic control circuits F16H61/0269characterised by low integration or small number of valves F16H61/0272characterised by initiating reverse gearshift F16H61/0274Control units where shifting is directly initiated by the driver F16H61/0276Elements specially adapted for hydraulic control units F16H61/0283Governor valves F16H61/0286Manual valves F16H61/029Throttle valves F16H61/0293the signals being purely mechanical F16H61/0295Automatic gear shift control F16H61/0297Gear shift control where shifting is directly initiated by the driver F16H61/04Smoothing ratio shift F16H61/0403Synchronisation before shifting F16H61/0437by using electrical signals F16H61/06by controlling rate of change of fluid pressure F16H61/061using electric control means F16H61/065using fluid control means F16H61/067using an accumulator F16H61/068using an orifice control valve F16H61/08Timing control F16H61/10Regulating shift hysteresis F16H61/12Detecting malfunction or potential malfunction F16H61/14Control of torque converter lock-up clutches F16H61/141using means only actuated by centrifugal force F16H61/142the means being hydraulic valves F16H61/143using electric control means F16H61/148using mechanical control means F16H61/16Inhibiting or initiating shift during unfavourable conditions F16H61/18Preventing unintentional or unsafe shift F16H61/20Preventing gear creeping; Transmission control during standstill F16H61/21Providing engine brake control F16H61/22Locking of the control input devices F16H61/24Providing feel F16H61/26Generation or transmission of movements for final actuating mechanisms F16H61/28with at least one movement of the final actuating mechanism being caused by a non-mechanical force F16H61/2807using electric control signals F16H61/2815with a control using only relays and switches F16H61/30Hydraulic or pneumatic motors or related fluid control means therefor F16H61/32Electric motors actuators or related electrical control means therefor F16H61/34comprising two mechanisms, one for the preselection movement, and one for the shifting movement F16H61/36with at least one movement being transmitted by a cable F16H61/38Control of exclusively fluid gearing F16H61/40hydrostatic F16H61/4008Control of circuit pressure F16H61/4017Control of high pressure F16H61/4026Control of low pressure F16H61/4035Control of circuit flow F16H61/4043Control of a bypass valve F16H61/4052by using a variable restriction F16H61/4061Control related to directional control valves F16H61/4069Valves related to the control of neutral F16H61/4078Fluid exchange between hydrostatic circuits and external sources or consumers F16H61/4096with pressure accumulators F16H61/4104Flushing F16H61/4131Fluid exchange by aspiration from reservoirs F16H61/4139Replenishing or scavenging pumps F16H61/4148Open loop circuits F16H61/4157Control of braking F16H61/4165Control of cooling or lubricating F16H61/4174Control of venting F16H61/4183Preventing or reducing vibrations or noise F16H61/4192Detecting malfunction or potential malfunction F16H61/42involving adjustment of a pump or motor with adjustable output or capacity F16H61/421Motor capacity control by electro-hydraulic control means F16H61/423Motor capacity control by fluid pressure control means F16H61/425Motor capacity control by electric actuators F16H61/427Motor capacity control by mechanical control means F16H61/431Pump capacity control by electro-hydraulic control means F16H61/433Pump capacity control by fluid pressure control means F16H61/435Pump capacity control by electric actuators F16H61/437Pump capacity control by mechanical control means F16H61/438Control of forward-reverse switching F16H61/439Control of the neutral position F16H61/44with more than one pump or motor in operation F16H61/444by changing the number of pump or motor units in operation F16H61/448Control circuits for tandem pumps or motors F16H61/452Selectively controlling multiple pumps or motors F16H61/456Control of the balance of torque or speed between pumps or motors F16H61/46Automatic regulation in accordance with output requirements F16H61/461not involving a variation of the output capacity of the main pumps or motors F16H61/462for achieving a target speed ratio F16H61/465for achieving a target input speed F16H61/468for achieving a target input torque F16H61/47for achieving a target output speed F16H61/472for achieving a target output torque F16H61/475for achieving a target power F16H61/478for preventing overload F16H61/48hydrodynamic F16H61/50controlled by changing the flow, force, or reaction of the liquid in the working circuit, while maintaining a completely filled working circuit F16H61/52by altering the position of blades F16H61/54by means of axially-shiftable blade runners F16H61/56to change the blade angle F16H61/58by change of the mechanical connection of, or between, the runners F16H61/60exclusively by the use of freewheel clutches F16H61/62involving use of a speed-changing gearing or of a clutch in the connection between runners F16H61/64controlled by changing the amount of liquid in the working circuit F16H61/66specially adapted for continuously variable gearings F16H61/662with endless flexible means F16H61/66227controlling shifting exclusively as a function of speed and torque F16H61/66231controlling shifting exclusively as a function of speed F16H61/66236using electrical or electronical sensing or control means F16H61/6624using only hydraulical and mechanical sensing or control means F16H61/66245using purely mechanical sensing or control means F16H61/6625controlling shifting exclusively as a function of torque F16H61/66254controlling of shifting being influenced by a signal derived from the engine and the main coupling F16H61/66259using electrical or electronical sensing or control means F16H61/66263using only hydraulical and mechanical sensing or control means F16H61/66268using purely mechanical sensing or control means F16H61/66272characterised by means for controlling the torque transmitting capability of the gearing F16H61/664Friction gearings F16H61/6645controlling shifting exclusively as a function of speed and torque F16H61/6646controlling shifting exclusively as a function of speed F16H61/6647controlling shifting exclusively as a function of torque F16H61/6648controlling of shifting being influenced by a signal derived from the engine and the main coupling F16H61/6649characterised by the means for controlling the torque transmitting capability of the gearing F16H61/68specially adapted for stepped gearings F16H61/682with interruption of drive F16H61/684without interruption of drive F16H61/686with orbital gears F16H61/688with two inputs F16H61/70specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series F16H61/702using electric or electrohydraulic control means F16H61/705using hydraulic and mechanical control means F16H61/707using only mechanical control means