Control method and apparatus
US12038082B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2023 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Jun 22, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/02043
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control method and apparatus may be applied to an electric drive system. The electric drive system includes an oil pump, a motor, a reducer, and a housing, the motor and the reducer are disposed in the housing, lubricating oil is stored in the housing, and the oil pump is configured to pump the lubricating oil. The method includes: obtaining a first rotational speed of the motor, a second rotational speed of the oil pump, and a temperature of the lubricating oil in the housing; and controlling a rotational speed of the oil pump to be a third rotational speed based on the first rotational speed, the second rotational speed, and the temperature. In this way, the rotational speed of the oil pump can be adjusted to change liquid levels of the lubricating oil in a cavity and oil pump power at different rotational speeds of the oil pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.