Warming-up system of a car engine
US4644919A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 19, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Dec 19, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A warming-up system of an engine for an automobile according to the present invention is provided with main and auxiliary nozzles in an air intake passage of a carburetor. The auxiliary nozzle is connected to an electromagnetically-operated fuel resupply pump. The warming-up system is further provided with a position detector for determining whether or not a throttle valve is in an open position, a rotation detector for detecting the rotational frequency of the engine, and a control circuit for controlling the drive of the pump in accordance with signals from the detectors. Based on the rotational frequency of the engine detected by the rotation detector, the control circuit determines whether the engine is in a cranking state or in a complete detonation state. When the engine is in the complete detonation state, the control circuit drives the pump to supply a predetermined quantity of auxiliary fuel to the intake passage through the auxiliary nozzle. When the engine is in the complete detonation state and if the throttle valve is determined to be open, the control circuit drives the pump to supply a larger quantity of auxiliary fuel than that supplied from the pump in the complete…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.