Patent · US Active

Glow plug system, controlling device and method for controlling the power of a glow plug

US8017888B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

BERN UNLIMITED INC. · US

Inventors

Martin Blanc · Knittlingen, DE
Peter Schafer · Pfungstadt, DE
Gerd Bräuchle · Gundelsheim, DE

Key dates

Filing date	Jun 20, 2008
Grant date	Sep 13, 2011
Priority date	—
Expiry date	Jun 25, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P19/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The description discloses a glow plug system for a Diesel engine of a motor vehicle having a glow plug (RG1, RG2) which comprises a positive terminal for connecting a supply voltage (U1) and a ground terminal for connecting to a ground potential (GND), a controlling device (1) for controlling the electric power supplied to the glow plug (RG1, RG2) in operation, whereby the controlling device (1) comprises a measurement input (ADC1) and a ground input (ADC2) in order to determine, in operation, a measured value of the supply voltage (U1) in relation to a reference potential (GND′) applied to the ground input (ADC2). The controlling device (1) has a test input (ADC3) which, in operation, is connected to a test voltage source via a first resistor (R1) and to the positive terminal of the glow plug (RG1, RG2) via a second resistor (R2), whereby the controlling device (1), in operation, determines a difference of the electric potential of the test input (ADC3) and the electric potential (GND′) of the ground input (ADC2), determines a deviation of the difference of these potentials from a reference value and, if this deviation is unequal to zero, uses the deviation to correct the measured…

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