Patent · US Active

Method for regulating a quantity control solenoid valve in an internal combustion engine

US8833342B2 · kind B2 · utility

1Cited by

6References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Uwe Richter · Jena, DE
Peter Roth · Immenstadt im Allgäu, DE
Joerg Kuempel · Stuttgart, DE
Matthias Maess · Eppelheim, DE

Key dates

Filing date	Dec 3, 2009
Grant date	Sep 16, 2014
Priority date	—
Expiry date	Dec 29, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/31
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for regulating a fuel injection system of an internal combustion engine, wherein the fuel injection system includes a high-pressure pump which is associated with a quantity control valve having a solenoid valve electromagnetically operable by a coil for supplying fuel, the quantity control valve regulating the fuel quantity pumped by the high pressure pump and the coil of the solenoid valve being energized according to a setpoint current value in order to close the valve for supplying fuel to the high-pressure pump; when the solenoid valve closes, the setpoint current value is reduced from a first current setpoint value to a second current setpoint value so that an emission of audible noise generated when the solenoid valve closes during operation of the internal combustion engine is at least partially reduced.

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