Patent · US Expired

Method and circuit arrangement for controlling an injection valve

US4770178A · kind A · utility

7Cited by

7References

2Claims

0Family size

Assignee

VDO Adolf Schindling AG · DE

Inventors

Andreas Sausner · Frankfurt am Main, DE
Heinz Hohne · Wiesbaden, DE

Key dates

Filing date	Apr 28, 1987
Grant date	Sep 13, 1988
Priority date	—
Expiry date	Apr 28, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH01H47/325
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for controlling an injection valve for an internal combustion engine in which the magnet coil of the injection valve is connected to pulsate current by means of a semiconductor switch to an operating voltage in such a way that, during a first time interval, a current which is sufficient to open the injection valve flows and that, following same, there is possibly a second time interval which is dependent on the intended injection time and has a current sufficient for holding the valve open. The first time interval is terminated by disconnection when the current has reached a peak valve which is dependent in accordance with a predetermined function on the operating voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.