Apparatus for controlling electric oil pump of automatic transmission and method thereof

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The electric oil pump control device addresses foreign matter blockage in automatic transmissions by repeatedly turning the pump on and off, effectively removing obstructions to improve starting performance and reduce failure rates.

KR103001004B1Active Publication Date: 2026-08-05HYUNDAI TRANSYS INC

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Patent Information

Application Number: KR1020230146679
Authority / Receiving Office: KR · KR
Patent Type: Patents
Current Assignee / Owner
Filing Date: 2023-10-30
Publication Date: 2026-08-05
Estimated Expiration: 2043-10-30

Application Information

Patent Timeline

30 Oct 2023

Application

KR1020230146679

05 Aug 2026

Publication

KR103001004B1

IPC: F16H61/431; F16H57/04; F16H61/12

CPC: F16H61/431; F16H57/0436; F16H57/0446; F16H2061/1228

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Application Domain

Gear lubrication/cooling Gearing control

Technology Topics

Motor speed Driving current

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AI Technical Summary

Technical Problem

Existing electric oil pumps in automatic transmissions can fail due to foreign matter blockage, leading to lubrication and control pressure failures, rendering vehicle operation impossible.

Method used

An electric oil pump control device that repeatedly turns the pump on and off based on changes in driving current to remove foreign matter, utilizing a processor to manage motor operation and feedback mechanisms.

Benefits of technology

The solution effectively removes foreign matter, restoring the oil pump to a normal state, enhancing starting performance and reducing failure rates.

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Abstract

The present invention discloses an electric oil pump control device for an automatic transmission and a method thereof. The electric oil pump control device for an automatic transmission according to the present invention comprises: a drive motor for driving an oil pump; a current sensing module for detecting a drive current applied to the drive motor; a rotational speed sensing module for detecting the rotational speed of the drive motor; a memory; and a processor operatively coupled to the drive motor, the current sensing module, the rotational speed sensing module, and the memory; wherein the processor applies a drive current to the drive motor according to a target rotational speed input from an upper control unit to operate the drive motor and feeds back the rotational speed detected through the rotational speed sensing module, and when the drive current detected through the current sensing module exceeds a set current, the drive motor is stopped and operated repeatedly.

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