Automotive type throttle body
US4796579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An automotive type internal combustion engine has an air throttle body for providing air to the engine for combination with fuel injected to define a fuel air charge; the air throttle body having primary and secondary air passages controlled by throttling valves, the primary passage being a drive-by-wire electrical system in which the throttle valve is moved electrically in response to movement of the vehicle accelerator pedal, the secondary passage being controlled by a throttle valve that has a direct mechanical connection to the vehicle accelerator pedal to be operative at wide open or near wide open throttle positions of the accelerator pedal to not only supply additional air for wide open throttle operation, but also to supply sufficient air to sustain engine operation in the event of inoperativeness of the electrical system or the actuator/motor affecting movement of the primary throttle valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.