Method of and system for controlling hydraulic power system
US4606313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1982 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Jun 9, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/42
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of and system for controlling a hydraulic power system comprising an internal combustion engine receiving a supply of fuel from a fuel injection pump, and at least one variable displacement hydraulic pump driven by the internal combustion engine. An engine speed deviation is obtained from the difference between a target speed set by an accelerator operation of the internal combustion engine and an output speed thereof. Then a fuel injection target value in predetermined functional relation to the engine speed deviation, is obtained based on at least the engine speed deviation, and a fuel injection rate of the fuel injection pump is controlled based on the fuel injection target value. At the same time, a displacement volume target value of the hydraulic pump is determined based on at least the engine speed deviation and an actual discharge pressure of the hydraulic pump in such a manner that as the engine speed deviation increases an input torque of the hydraulic pump decreases, and the displacement volume of the hydraulic pump is controlled based on the displacement volume target value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.