Emergency control device for fuel-dosing systems
US4528952A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1983 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Oct 14, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an emergency control device for fuel dosing systems of IC engines, particularly for fuel injection devices of a diesel engine. A conventional regulating path for the fuel pump, includes a series connection of a set of data sensors, a signal processing circuit for computing a regular control signal, and a fuel regulating device connected to the fuel pump and provided with a manually or automatically controlled switching device. An emergency control branch is connected between the switching device and the sensor to function in parallel with the regular regulating device. The emergency control branch includes a nominal value generator of a signal corresponding to a maximum manifold pressure and a manifold pressure regulator controlled by output from the nominal value transmitter, to apply, via the switching device, to the fuel pump a dosing signal which causes the manifold pressure not to exceed the preset maximum value. In a further elaboration the emergency control branch includes a minimum value selector cooperating, in addition to the manifold pressure regulator, with a current control unit indicative of the gas pedal position and with an overspeed safety circuit coop…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.