Engine control strategy as a function of gear selector mechanism
US5836851A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Jul 22, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/502
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system is provided with two sets of gain factors for use in conjunction with a PID control system. When a gear selection mechanism is in a steady state, a first set of gain factors is used so that the engine control system is less responsive and the engine operates more smoothly. When the gear selection mechanism is being moved from a neutral position to either forward or reverse gear or vice versa, a second set of gain factors are substituted for the first set so that the engine control system will be more responsive and the sudden change in the load on the engine will not cause a stall condition or a sudden increase in the RPM. This technique can typically be employed in a proportional, integral, and differential (PID) control system, but alternative control systems can also benefit from its use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.