Dual radius geometry accelerator control system
US5542313A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Apr 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20564
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A Dual Radius Geometry Accelerator Control System is provided in which the throttle valve is made to open slowly during the off-idle range of operation then progressively faster during the mid-range operation until a maximum system actuation rate is reached. The throttle valve is then made to open at a gradually decreasing actuation rate until a local minimum actuation rate is reached at the point during the full throttle range of operation that downshifting occurs. Thereafter, the throttle valve is made to open at a substantially linear actuation rate as the control system approaches wide-open throttle. This unique throttle valve actuation scheme is achieved through an inventive control member with a dual radius design for opening the throttle valve at a non-linear actuation rate in response to the linear travel of the accelerator cable and a guide connected to the control member for contacting the accelerator cable such that, in a first range of accelerator pedal actuation, the accelerator cable contacts the guide at an engagement point to open the throttle valve at a first continuously changing actuation rate that reaches a maximum system value at a cross-over point, and in a se…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.