ELECTRICALLY CONTROLLED HYDRAULIC SYSTEM FOR VEHICLE TRANSMISSION AND SYSTEM CONTROL METHOD Russian patent published in 2022 - IPC B60W10/10 F16H61/02 F15B1/00 

FIELD: car industry.

SUBSTANCE: invention relates to vehicle transmissions. An electrically controlled hydraulic system for a vehicle transmission contains an injection pump system and a subsystem containing an electrically operated module of hydraulic pressure control. The subsystem has the first cutoff frequency, and the electrically controlled module has the second cutoff frequency exceeding the first frequency. A driver circuit contains a bridge circuit with the first and the second power supply branches between the first and the second terminals of a power source. Power supply branches contain controlled conductive channels of switching elements and unidirectional conductive elements. An electromagnetically controlled working element is made in the form of a load between the first and the second connection nodes. A control signal of a control circuit has a working cycle corresponding to a perturbed input value. A perturbance value varies in accordance with a periodical function with a perturbance frequency in the range determined by the first and the second frequencies.

EFFECT: accuracy of control is increased.

8 cl, 5 dwg