ADJUSTABLE CROSS-AXLE DIFFERENTIAL MECHANISM (CADM) FOR CARS (4K2) Russian patent published in 2024 - IPC F16H48/27 F16H48/32 B60K17/348 

FIELD: transport machine building.

SUBSTANCE: invention relates to design of rear and front drive axles for cars. Cross-axle differential mechanism (CADM) comprises two single-row planetary gears. Driven links—carriers are connected with half-axles of driving wheels. Drive links—crown gears are fixed on central located tubular shaft, which is driven by gear cylindrical pair from driven shaft of main gear. Control links—sun gears are kinematically connected to the shaft of the reversible and reversible volumetric hydraulic machine by means of two cylindrical and two bevel gear pairs with a common drive bevel gear. Hydraulic machine is connected to hydraulic system with automatically recharged hydraulic accumulator and electrically controlled two three-position slide valves, reducing and bypass valves. ACS performs automatic control of pressure difference between its working cavities regardless of its operating mode and direction of its rotation and corresponding difference in torque of driving wheels. ACS in automatic control mode maintains specified dimensionless value k_s=0.9 of vehicle static steering index, current values of which are determined by angular speed of vehicle turning, transverse acceleration of center of mass, turning angle of controlled wheels, as well as length of its wheelbase. With the vehicle rectilinear movement, the directional stability increase is provided by the CADM locking mode by means of the hydraulic machine inlet and outlet cavities overlapping, which, when the car enters the turn, automatically switches to either the above controlled mode or to the unlocking mode.

EFFECT: higher directional stability of the car.

4 cl, 10 dwg