Dual throttle control to a single throttle input
US6065448A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D11/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dual throttle system for an internal combustion engine includes first foot pedal throttle and a second hand controller throttle. The system includes a throttle position signal generator that produces a throttle position signal at an input to an electronic engine control module (ECM). The engine control module uses the throttle position signal input to determine an engine speed and issues appropriate commands to a fuel system controller. The throttle position generator includes a first potentiometer having its wiper mechanically connected to the first throttle and its output electrically connected to the throttle position signal input of the ECM. The first potentiometer is connected in series between a voltage source in the ECM and the wiper of a second variable resistance component driven by the second throttle. The output of the second component is connected to ground to complete the series circuit. The voltage seen at the throttle signal input of the ECM is a function of the combined series resistances of the potentiometer and the second variable resistance component based upon the positions of the respective throttles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.