METHOD OF DETERMINING REDUCED MOMENT OF INERTIA OF PRE-TRANSFORMER ZONE OF HYDROMECHANICAL TRANSMISSION OF VEHICLE Russian patent published in 2016 - IPC G01M1/10 

FIELD: machine building.

SUBSTANCE: method of determining reduced moment of inertia of pre-transformer zone of hydromechanical transmission transport machine lies in its calculation for dependence connecting angular accelerations acting torques and moments of inertia of motor, pump and turbine wheel of torque converter and hydrodynamic linkage between them. Novelty of method lies in that said relationships are established experimentally with dynamic properties of fuel system and inertia of thermodynamic processes in engine, inertia of devices, which drive of impeller, its hydrodynamic interaction with turbine wheel. Shaft connecting engine to impeller of hydro-transformer of test transmission sample installed in transport vehicle, is fitted with sensors for torque and angular velocity of shaft, connected to a recording device. Method includes sharp acceleration of motor shaft by transmission in neutral and unlocked hydro-transformer, recording time functions of dynamic torque and angular velocity of motor shaft. Obtained data are used to determine time increment and angular velocity during acceleration. Numerical value of reduced moment of inertia of pre-transformer zone is determined by quotient of product of increment of moment and duration of acceleration and increment of angular velocity. Efficiency of disclosed method is to improve accuracy of determining reduced moment of inertia of pre-transformer zone of hydromechanical transmission. Results of determining reduced moment of inertia of pre-transformer zone in accordance with method differ from those used in calculation two times.

EFFECT: method enables to more accurately determine natural frequency of system, synthesise effective vibration dampers, excluding resonant modes.

1 cl, 1 dwg