System for controlling operation of an internal combustion engine
US6135918A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | May 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/84
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for controlling operation of an internal combustion engine includes a control computer responsive to a number of engine/vehicle operating conditions to control engine operation to thereby control engine speed and engine or vehicle acceleration. In one embodiment, the control computer is configured to determine an engine or vehicle acceleration limit value based on current engine or vehicle speed, and an engine speed limit value based on current engine load, and to control engine fueling and/or speed to thereby limit engine speed to the engine speed limit value and/or engine/vehicle acceleration to the engine/vehicle acceleration limit value. In another embodiment, the control computer is configured to determine a pseudo-load value, which is preferably a vehicle mass value and/or road grade value estimated from current vehicle acceleration and engine fueling conditions, determine an engine speed limit value based on the pseudo-load value and current vehicle speed, and control engine speed and/or fueling to thereby limit engine speed to the pseudo-load-based engine speed limit value. In either case, the concepts of the present invention provide for increased fuel economy by …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.