Patent · US Expired

Safety circuit for a high-voltage generator of an electrostatic filter

US5053914A · kind A · utility

8Cited by

7References

15Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolf Wessel · Oberriexingen, DE
Werner Fischer · Heimsheim, DE
Rolf Leonhard · Schwieberdingen, DE
Wilhelm Polach · Asperg, DE
Bernhard Lucas · Alagón, ES
Wilhelm Stahl · Laichingen, DE

Key dates

Filing date	Dec 8, 1989
Grant date	Oct 1, 1991
Priority date	—
Expiry date	Dec 8, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A safety circuit arrangement for the high-voltage generator of an electrostatic filter, in particular of an electrostatic soot trap for diesel internal-combustion engines including a grounded filter housing and a filter electrode, has a power supply (15) which is connected to the high voltage generator (20) via controllable switching means (34). A and a shielded high-voltage cable (17), the high-voltage line (18) of which connects an output (24) of the high-voltage generator (20) to the filter electrode (14). To eliminate the risk to people caused by components carrying high voltage, the shield (19) of the high-voltage cable (17) is connected at one end to the filter housing (11), and at the other end to a control device (25) in such a way that an interruption of the shield (19) leads to the generation of a control signal for the switching means.

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