Patent · US Active

Method for determining quantities of fuel during a direct injection of a motor vehicle

US9945339B2 · kind B2 · utility

0Cited by

0References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Bollinger · Marbach am Neckar, DE
Joachim Palmer · Ditzingen, DE
Andreas Gessler · Haar, DE

Key dates

Filing date	Feb 5, 2015
Grant date	Apr 17, 2018
Priority date	—
Expiry date	Aug 11, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/101
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In the method provided herein, quantities of fuel are determined during a direct injection of a motor vehicle. In this connection, within one work cycle, test injections are carried out in two cylinders of an internal combustion engine of the motor vehicle during overrun phases, speed oscillations of moved masses of the cylinders are measured and a relative difference in quantity of the fuel quantity of the test injections within one work cycle is determined from the speed oscillations. By evaluating a relative signal between the test injections within one work cycle in the two cylinders, an intrinsic dependence of the drive train of the quantity of fuel signal is compensated.

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