Steering assist system
US11008038B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Nov 8, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle steering assist system, including an engine pump, a flow-rate restricting mechanism, a motor pump, a motor-pump controller, and a steering-force assist device, wherein the steering assist system is configured to restrict an engine-pump ejection flow rate to be lower than a required receiving flow rate to be received by the assist device when the engine pump is operated by being driven by an engine rotating at an idling speed, the engine-pump ejection flow rate being a flow rate of a working fluid ejected from the engine pump to the assist device via the restricting mechanism, and wherein the motor-pump controller is configured to control a motor-pump ejection flow rate such that an insufficient flow rate of the working fluid is covered by the motor-pump ejection flow rate, the insufficient flow rate being a shortage in the required receiving flow rate not covered by the engine-pump ejection flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.